{\n url = '/search-ws/api/v1/everything/_complete';\n\n init() {\n this.withFilter(SearchFilterName.source, SearchDocumentType.KNOWLEDGE);\n }\n}\n","import { Injectable } from '@angular/core';\nimport { PageMetaService } from '@forgerock/backstage-ui-core';\nimport { LibraryService } from './library.service';\nimport { KnowledgeDocument } from './model/knowledge-document';\nimport { TaxonomyService } from './taxonomy.service';\n\n@Injectable({\n providedIn: 'root'\n})\nexport class KnowledgeMetaService {\n\n constructor(private pageMetaService: PageMetaService,\n private taxonomyService: TaxonomyService,\n private libraryService: LibraryService) { }\n\n /**\n * Adds metdata tags to the page so that Coveo can scrape article and book data more easily.\n *\n * Example: \n *\n * @param doc - article or book\n */\n async setTags(doc: KnowledgeDocument): Promise {\n const { title, productVersionPaths, publicationType, documentType } = doc;\n const library = await this.libraryService.getLibrary(doc.library);\n const taxonTitles = await this.toTaxonTitles(doc.library, doc.taxa);\n\n this.pageMetaService.setTags({\n title,\n products: productVersionPaths,\n tags: taxonTitles,\n category: publicationType,\n type: documentType,\n library: library.displayName\n }, true);\n }\n\n private async toTaxonTitles(library: string, taxonIds: string[]): Promise {\n if (!taxonIds?.length) {\n return [];\n }\n\n const taxa = await this.taxonomyService.getTaxa(library, taxonIds);\n\n return taxa.map(taxon => taxon.title);\n }\n\n}\n","import { Injectable } from '@angular/core';\nimport { Params } from '@angular/router';\nimport {\n AbstractSearchService,\n BackendService,\n ProductTreePath,\n SearchFilter,\n SearchFilterName,\n SearchFilterOperator\n} from '@forgerock/backstage-ui-core';\n\nimport { KnowledgeDocument } from './model/knowledge-document';\n\n@Injectable({ providedIn: 'root' })\nexport class KnowledgeSearchService extends AbstractSearchService {\n url = '/search-ws/api/v1/everything/_search';\n\n constructor(backend: BackendService) {\n super(backend);\n }\n\n init() {\n this.params.filters = this.defaultFilters();\n }\n\n defaultFilters(): SearchFilter[] {\n return [\n new SearchFilter(SearchFilterName.publicationType, [ `Publisher's notes` ], SearchFilterOperator.ne)\n ];\n }\n\n filtersToParams(filters: SearchFilter[]): Params {\n return filters.reduce((params, searchFilter) => {\n if (searchFilter.name === SearchFilterName.taxa || searchFilter.name === SearchFilterName.ancestorTaxa) {\n params.taxon = [ ...(params.taxon || []), ...searchFilter.values ];\n }\n\n if (searchFilter.name === SearchFilterName.taxa) {\n params.scope = 'one';\n }\n\n // articleType eq filters get turned into type params. Any other operators are ignored since they're default\n // filters (namely articleType:ne:Publisher's notes)\n if (searchFilter.name === SearchFilterName.publicationType && searchFilter.operator !== SearchFilterOperator.ne) {\n params.type = [ ...(params.type || []), ...searchFilter.values ];\n }\n\n if (searchFilter.name === SearchFilterName.productVersionPaths) {\n const path = ProductTreePath.parse(searchFilter.values[ 0 ]).toMap();\n\n params = { ...params, ...path };\n }\n\n return params;\n }, {} as Params);\n }\n}\n","import { DatePipe } from '@angular/common';\nimport { Component, Input } from '@angular/core';\n\nimport { KnowledgeDocument } from '../model/knowledge-document';\n\n@Component({\n selector: 'app-last-updated',\n templateUrl: './last-updated.component.html',\n standalone: true,\n imports: [ DatePipe ]\n})\nexport class LastUpdatedComponent {\n @Input() doc: KnowledgeDocument;\n}\n","import { Component, Input, OnChanges } from '@angular/core';\nimport { RouterLink } from '@angular/router';\n\n@Component({\n selector: 'app-legal',\n templateUrl: './legal.component.html',\n styleUrls: [ './legal.component.scss' ],\n standalone: true,\n imports: [ RouterLink ]\n})\nexport class LegalComponent implements OnChanges {\n\n @Input() year: number;\n @Input() oldestYear?: number;\n display: string;\n\n ngOnChanges() {\n if (!this.oldestYear || this.oldestYear === this.year) {\n this.display = `${this.year}`;\n } else {\n this.display = `${this.oldestYear} - ${this.year}`;\n }\n }\n}\n","import { Injectable } from '@angular/core';\nimport { BackendService, comparator } from '@forgerock/backstage-ui-core';\nimport { map } from 'rxjs/operators';\nimport { Library } from './model/library';\n\n@Injectable({ providedIn: 'root' })\nexport class LibraryService {\n url = '/knowledge-ws/api/v1/library';\n private libraries: Promise>;\n\n constructor(private backend: BackendService) {\n }\n\n getLibraries() {\n if (!this.libraries) {\n this.libraries = this.backend\n .get(this.url)\n .pipe(\n map((libraries: Array) => this.filterAndSortLibraries(libraries))\n )\n .toPromise();\n }\n\n return this.libraries;\n }\n\n async getLibrary(id: string): Promise {\n const libraries = await this.getLibraries();\n return libraries.find(library => library.id === id);\n }\n\n private filterAndSortLibraries(libraries: Array): Array {\n return libraries\n .filter(library => !library.abandoned)\n .sort(comparator('displayName', true));\n }\n\n}\n","import { Component, Input } from '@angular/core';\nimport { RouterLink, RouterLinkActive } from '@angular/router';\nimport { SidenavFoldableItemComponent, SidenavFoldableSubItemComponent } from '@forgerock/backstage-ui-components';\nimport { Book } from '../model/book';\nimport { BookContent, isChapterGroup, isSavedSearchChapter } from '../model/chapter';\nimport { isBook } from '../model/knowledge-document';\nimport { LibraryNamePipe } from '../pipe/library-name.pipe';\n\n@Component({\n selector: 'app-main-nav-tree-node',\n standalone: true,\n imports: [\n SidenavFoldableItemComponent,\n SidenavFoldableSubItemComponent,\n LibraryNamePipe,\n RouterLink,\n RouterLinkActive\n ],\n templateUrl: './main-nav-tree-node.component.html',\n styleUrl: './main-nav-tree-node.component.scss'\n})\nexport class MainNavTreeNodeComponent {\n @Input() data: Book | BookContent\n @Input() open: boolean;\n protected readonly isChapterGroup = isChapterGroup;\n protected readonly isBook = isBook;\n protected readonly isSavedSearchChapter = isSavedSearchChapter;\n}\n","import { CommonModule } from '@angular/common';\nimport { Component, inject, OnInit } from '@angular/core';\nimport { RouterLink, RouterLinkActive } from '@angular/router';\nimport {\n IconComponent,\n SidenavComponent,\n SidenavFoldableItemComponent,\n SidenavFoldableSubItemComponent\n} from '@forgerock/backstage-ui-components';\nimport { SearchFilterName } from '@forgerock/backstage-ui-core';\nimport { firstValueFrom } from 'rxjs';\nimport { BookService } from '../book.service';\nimport { DASHBOARD_ID } from '../dashboard-id';\nimport { LibraryService } from '../library.service';\nimport { MainNavTreeNodeComponent } from '../main-nav-tree-node/main-nav-tree-node.component';\nimport { Book } from '../model/book';\nimport { isChapterGroup } from '../model/chapter';\nimport { isBook } from '../model/knowledge-document';\nimport { PublicationExpansion } from '../model/publication-expansion';\nimport { PublishedState } from '../model/published-state';\nimport { PublicationSearchService } from '../publication-search.service';\n\n@Component({\n selector: 'app-main-nav',\n standalone: true,\n imports: [ CommonModule, RouterLinkActive, RouterLink, SidenavComponent, SidenavFoldableItemComponent, IconComponent,\n SidenavFoldableSubItemComponent, MainNavTreeNodeComponent ],\n templateUrl: './main-nav.component.html',\n styleUrl: './main-nav.component.scss',\n})\nexport class MainNavComponent implements OnInit {\n nav: Book[] = [];\n firstLibrary = 'kb';\n\n private libraryService = inject(LibraryService);\n private publicationSearchService = inject(PublicationSearchService);\n private bookService = inject(BookService);\n private dashboardId = inject(DASHBOARD_ID);\n protected readonly isBook = isBook;\n protected readonly isChapterGroup = isChapterGroup;\n\n async ngOnInit(): Promise {\n const libraries = await this.libraryService.getLibraries()\n\n const res = await firstValueFrom(\n this.publicationSearchService\n .withFilter(SearchFilterName.publishedState, PublishedState.published)\n .withFilter(SearchFilterName.slug, libraries.map(it => `b-${it.id}-${this.dashboardId}`), 'in')\n .withFilter(SearchFilterName.noSearch, true)\n .withExpansion(PublicationExpansion.header)\n .withSort(SearchFilterName.library)\n .search()\n );\n\n this.nav = res.results\n .sort(({ library: a }, { library: b }) => a === this.firstLibrary ? -1 : b === this.firstLibrary ? 1 : 0)\n .map(result => this.bookService.removeEmptyContents(result as Book))\n }\n}\n","import { Article } from './article';\nimport { SavedSearch } from './saved-search';\n\nexport enum ChapterDocumentType {\n ARTICLE = 'article',\n SAVED_SEARCH = 'saved-search'\n}\n\nexport interface ArticleChapter {\n id: string;\n documentType: ChapterDocumentType;\n doc?: Article;\n}\n\nexport interface SavedSearchChapter {\n id: string;\n documentType: ChapterDocumentType;\n doc?: SavedSearch;\n}\n\nexport type Chapter = ArticleChapter | SavedSearchChapter;\n\nexport interface ChapterGroup {\n id: string;\n title: string;\n synopsis?: string;\n contents: Array;\n searchFilters?: string[];\n}\n\nexport type BookContent = Chapter | ChapterGroup;\n\nexport function isChapterGroup(content: any): content is ChapterGroup {\n return content && !!(content as ChapterGroup).contents;\n}\n\nexport function isChapter(content: any): content is Chapter {\n return content && !!(content as Chapter).doc;\n}\n\nexport function isSavedSearchChapter(content: Chapter): content is SavedSearchChapter {\n return content && content.documentType === ChapterDocumentType.SAVED_SEARCH;\n}\n\nexport function isArticleChapter(content: Chapter): content is ArticleChapter {\n return content && content.documentType === ChapterDocumentType.ARTICLE;\n}\n","export enum KnowledgeDocumentType {\n article = 'article',\n book = 'book'\n}\n","import {Article} from './article';\nimport {Book} from './book';\nimport {RssEntry} from './rss-entry';\nimport {KnowledgeDocumentType} from './knowledge-document-type';\nimport {PublishedState} from './published-state';\nimport {SearchMediaType} from \"./search-media-type\";\n\nexport const PUBLISHED_REV = '_published';\n\nexport interface KnowledgeDocument {\n classNames: string[];\n documentType: KnowledgeDocumentType;\n featured: boolean;\n firstDraftBy: string;\n firstDraftTimestamp: string;\n library: string;\n mediaType?: SearchMediaType;\n noSearch: boolean;\n productVersionPaths: string[];\n publicPublishComment: string;\n publishedState: PublishedState;\n publicationType: string;\n readPermissions: string[];\n revisionId: string;\n revisionNumber: string;\n slug: string;\n snippet?: string;\n synopsis: string;\n taxa: string[];\n title: string;\n updateTimestamp: string;\n url?: string;\n}\n\nexport interface SearchKnowledgeDocument extends KnowledgeDocument {\n articleType: string;\n creationTimestamp: string;\n}\n\nexport function isArticle(doc: any): doc is Article {\n return doc?.documentType === KnowledgeDocumentType.article;\n}\n\nexport function isBook(doc: any): doc is Book {\n return doc?.documentType === KnowledgeDocumentType.book;\n}\n\nexport function isRssEntry(doc: any): doc is RssEntry {\n return doc?.mediaType === SearchMediaType.RSS;\n}\n","export interface ProductPath {\n familyId: string;\n productId: string;\n minorVersion: string;\n version: string;\n}\n\nexport const FAMILY_ID = 'familyId';\nexport const PRODUCT_ID = 'productId';\nexport const LATEST = 'latest';\n","export enum PublicationExpansion {\n none = 'none',\n header = 'header',\n full = 'full'\n}\n","import { SearchParams } from '@forgerock/backstage-ui-core';\nimport { PublicationExpansion } from './publication-expansion';\n\nexport class PublicationSearchParams extends SearchParams {\n expand: PublicationExpansion = PublicationExpansion.none;\n\n toHttpParams() {\n return super.toHttpParams().set('expand', this.expand);\n }\n}\n","export enum PublishedState {\n archived = 'archived',\n published = 'published',\n unpublished = 'unpublished'\n}\n","import { HttpParams } from '@angular/common/http';\n\nimport { KnowledgeDocument } from './knowledge-document';\nimport { SavedSearch } from './saved-search';\n\nexport class SavedSearchParams {\n constructor(public count = 10, public offset = 0) {\n }\n\n toHttpParams(): HttpParams {\n return new HttpParams()\n .set('offset', this.offset.toString())\n .set('count', this.count.toString());\n }\n}\n\nexport class SavedSearchResultData {\n results: Array = [];\n total = 0;\n}\n\nexport class SavedSearchResults {\n readonly params = new SavedSearchParams();\n data = new SavedSearchResultData();\n loading = false;\n\n static deserialize(serialized: any): SavedSearchResults {\n const results = new SavedSearchResults(serialized.savedSearch);\n const params = new SavedSearchParams(serialized.params.count, serialized.params.offset);\n return { ...results, data: serialized.data, params };\n }\n\n constructor(readonly savedSearch: SavedSearch) {\n }\n}\n","export enum SearchFilterName {\n articleType = 'articleType',\n library = 'library',\n taxa = 'taxa',\n ancestorTaxa = 'ancestorTaxa',\n documentType = 'documentType',\n source = 'source'\n}\n","export enum SearchMediaType {\n /** Some kind of playable video file */\n VIDEO = 'VIDEO',\n\n /** HTML content viewable in the browser */\n HTML = 'HTML',\n\n /** An ebook that will require some kind of app or reader to view */\n EBOOK = 'EBOOK',\n\n /** AN RSS feed that aggregates other content */\n RSS = 'RSS',\n\n /** Interactive learning content */\n SCORM = 'SCORM'\n\n // TBA other types to be added as migrations require them\n}\n","import { Component } from '@angular/core';\n\n@Component({\n selector: 'app-not-found',\n templateUrl: './not-found.component.html',\n styleUrls: [ './not-found.component.scss' ],\n standalone: true\n})\nexport class NotFoundComponent {}\n","import { NgForOf, NgIf, NgOptimizedImage, SlicePipe } from '@angular/common';\nimport { Component, inject, OnInit } from '@angular/core';\nimport { RouterLink } from '@angular/router';\nimport { SpinnerComponent } from '@forgerock/backstage-ui-components';\nimport { AlertService, EnvService, TryCatcher } from '@forgerock/backstage-ui-core';\nimport { KnowledgeEnv } from '../model/knowledge-env';\nimport { SavedSearchResults } from '../model/saved-search-results';\nimport { SavedSearchRoutePipe } from '../pipe/saved-search-route.pipe';\nimport { SavedSearchService } from '../saved-search.service';\nimport { SearchBarComponent } from '../search-bar/search-bar.component';\n\n@Component({\n selector: 'app-overview',\n standalone: true,\n imports: [\n SearchBarComponent,\n NgOptimizedImage,\n NgForOf,\n SlicePipe,\n NgIf,\n RouterLink,\n SavedSearchRoutePipe,\n SpinnerComponent\n ],\n templateUrl: './overview.component.html',\n styleUrl: './overview.component.scss'\n})\nexport class OverviewComponent extends TryCatcher implements OnInit {\n\n private savedSearchService = inject(SavedSearchService);\n private envService = inject(EnvService);\n protected alertService: AlertService;\n\n topRatedSavedSearchResults: SavedSearchResults;\n mostRecentSavedSearchResults: SavedSearchResults;\n\n async ngOnInit(): Promise {\n return this.tryCatch(async () => {\n const { topRatedFeedId, mostRecentFeedId } = await this.envService.get();\n const [ topRatedFeed, mostRecentFeed ] = await Promise.all([\n this.savedSearchService.getSavedSearch(topRatedFeedId),\n this.savedSearchService.getSavedSearch(mostRecentFeedId)\n ]);\n\n const [ topRatedSavedSearchResults, mostRecentSavedSearchResults ] = await Promise.all([\n this.savedSearchService.getResults(topRatedFeed),\n this.savedSearchService.getResults(mostRecentFeed)\n ]);\n\n this.topRatedSavedSearchResults = topRatedSavedSearchResults;\n this.mostRecentSavedSearchResults = mostRecentSavedSearchResults;\n }, null, 'Unable to load feeds');\n }\n\n\n}\n","import { DOCUMENT, Location, PlatformLocation } from '@angular/common';\nimport { Inject, Injectable, Optional } from '@angular/core';\nimport { Meta, Title } from '@angular/platform-browser';\n\nimport { APP_ORIGIN } from '@forgerock/backstage-ui-core';\n\n@Injectable({ providedIn: 'root' })\nexport class PageHeadService {\n\n baseTitle = 'ForgeRock Backstage';\n\n constructor(@Inject(DOCUMENT) private document: Document,\n private platformLocation: PlatformLocation,\n @Optional() @Inject(APP_ORIGIN) private origin: string,\n private location: Location,\n private title: Title,\n private meta: Meta) {\n }\n\n setTitle(title) {\n title = title ? `${title} | ${this.baseTitle}` : this.baseTitle;\n this.title.setTitle(title);\n }\n\n setDescription(description: string): void {\n this.meta.addTag({ name: 'description', content: description });\n }\n\n unsetDescription(): void {\n this.meta.removeTag('name=\"description\"');\n }\n\n setCanonical(path: string): void {\n const link = this.getCanonicalLink() || this.createCanonicalLink();\n const origin = this.origin || '';\n const href = this.location.prepareExternalUrl(path);\n link.setAttribute('href', origin + href);\n }\n\n unsetCanonical(): void {\n this.document.head.removeChild(this.getCanonicalLink());\n }\n\n private getCanonicalLink(): HTMLLinkElement {\n return this.document.querySelector('link[rel=\"canonical\"]');\n }\n\n private createCanonicalLink(): HTMLLinkElement {\n const link = this.document.createElement<'link'>('link');\n link.setAttribute('rel', 'canonical');\n this.document.head.appendChild(link);\n return link;\n }\n\n}\n","import { Component, Input, OnChanges } from '@angular/core';\nimport { PageHeadService } from '../page-head.service';\n\n@Component({\n selector: 'app-page',\n template: '',\n standalone: true\n})\nexport class PageComponent implements OnChanges {\n @Input() title: string;\n\n constructor(private titleService: PageHeadService) {\n }\n\n ngOnChanges(): void {\n this.titleService.setTitle(this.title);\n }\n\n}\n","import { Pipe, PipeTransform } from '@angular/core';\nimport { SearchFilter } from '@forgerock/backstage-ui-core';\nimport { KnowledgeSearchService } from '../knowledge-search.service';\nimport { SearchFilterName } from '../model/search-filter-name';\n\n@Pipe({\n name: 'filteredSearch',\n standalone: true\n})\nexport class FilteredSearchPipe implements PipeTransform {\n private defaultFilters: SearchFilter[];\n\n constructor(knowledgeSearchService: KnowledgeSearchService) {\n this.defaultFilters = knowledgeSearchService.defaultFilters();\n }\n\n transform(filters: SearchFilter[]): boolean {\n return Array.isArray(filters) && filters\n .filter(filter =>\n filter &&\n filter.hasValue() &&\n filter.name !== SearchFilterName.library &&\n filter.name !== SearchFilterName.documentType &&\n !this.defaultFilters.some(defaultFilter => filter.equals(defaultFilter)))\n .length > 0;\n }\n\n}\n","import { inject, Pipe, PipeTransform } from '@angular/core';\nimport { LibraryService } from '../library.service';\n\n@Pipe({\n name: 'libraryName',\n standalone: true,\n pure: false\n})\nexport class LibraryNamePipe implements PipeTransform {\n libraryId = null;\n libraryName = '';\n private libraryService = inject(LibraryService);\n\n transform(libraryId: string): string {\n if (this.libraryId !== libraryId) {\n this.libraryId = libraryId;\n this.libraryName = libraryId;\n this.libraryService.getLibrary(libraryId).then(library => {\n this.libraryName = library?.displayName ?? libraryId;\n });\n }\n return this.libraryName;\n }\n\n}\n","import { Pipe, PipeTransform } from '@angular/core';\nimport {isArticle, isBook, isRssEntry, KnowledgeDocument} from '../model/knowledge-document';\n\n@Pipe({\n name: 'savedSearchRoute',\n standalone: true\n})\nexport class SavedSearchRoutePipe implements PipeTransform {\n\n transform(doc: KnowledgeDocument): string {\n if (isArticle(doc)) {\n return [ doc.library, 'article', doc.slug ].join('/');\n }\n\n if (isBook(doc)) {\n return [ doc.library, 'book', doc.slug, 'cover' ].join('/');\n }\n\n if(isRssEntry(doc)) {\n return doc.url\n }\n\n return '';\n }\n\n}\n","import { Component, Inject } from '@angular/core';\nimport { WINDOW } from '@forgerock/backstage-ui-core';\n\n@Component({\n selector: 'app-print',\n templateUrl: './print.component.html',\n styleUrls: [ './print.component.scss' ],\n standalone: true\n})\nexport class PrintComponent {\n constructor(@Inject(WINDOW) private window: Window) {\n }\n\n print() {\n this.window.print();\n }\n\n}\n","import { Injectable } from '@angular/core';\nimport { AbstractSearchService } from '@forgerock/backstage-ui-core';\nimport { KnowledgeDocument } from './model/knowledge-document';\nimport { PublicationExpansion } from './model/publication-expansion';\nimport { PublicationSearchParams } from './model/publication-search-params';\n\n@Injectable({\n providedIn: 'root'\n})\nexport class PublicationSearchService extends AbstractSearchService {\n url = '/knowledge-ws/api/v1/_search'\n params: PublicationSearchParams;\n\n init(): void {\n this.params = new PublicationSearchParams();\n }\n\n withExpansion(expansion: PublicationExpansion): this {\n this.params.expand = expansion;\n return this;\n }\n}\n","import { Injectable } from '@angular/core';\nimport { BackendService } from '@forgerock/backstage-ui-core';\nimport { firstValueFrom } from 'rxjs';\nimport { KnowledgeDocument } from './model/knowledge-document';\nimport { Ratings } from './model/ratings';\n\n@Injectable({ providedIn: 'root' })\nexport class RatingService {\n url = '/knowledge-ws/api/v1/library';\n ratingsCache = new Map>();\n\n constructor(private backend: BackendService) {\n }\n\n submitRating(doc: KnowledgeDocument, rating: boolean): Promise {\n return firstValueFrom(\n this.backend.post(`${this.url}/${doc.library}/${doc.documentType}/${doc.slug}/ratings?thumbsup=${rating}`, null)\n );\n }\n\n getRatings(doc: KnowledgeDocument): Promise {\n if (!this.ratingsCache.has(doc.slug)) {\n this.ratingsCache.set(doc.slug, firstValueFrom(\n this.backend.get(`${this.url}/${doc.library}/${doc.documentType}/${doc.slug}/ratings`)\n ));\n }\n\n return this.ratingsCache.get(doc.slug);\n }\n\n}\n","import { Injectable } from '@angular/core';\nimport { BackendService } from '@forgerock/backstage-ui-core';\nimport { firstValueFrom } from 'rxjs';\n\nimport { SavedSearch } from './model/saved-search';\nimport { SavedSearchResults } from './model/saved-search-results';\n\n@Injectable({ providedIn: 'root' })\nexport class SavedSearchService {\n private url = '/search-ws/api/v1/savedsearch';\n private savedSearchCache = new Map>();\n private resultCache = new Map();\n\n constructor(private backend: BackendService) {\n }\n\n /**\n * Gets a single savedSearch by its ID from the cache\n *\n * @param id - SavedSearch id\n * @return\n */\n getSavedSearch(id: string): Promise {\n let savedSearch = this.savedSearchCache.get(id);\n\n if (!savedSearch) {\n savedSearch = firstValueFrom(this.backend.get(`${this.url}/${id}`));\n this.savedSearchCache.set(id, savedSearch);\n }\n\n return savedSearch;\n }\n\n /**\n * Gets the results of a savedSearch from the cache\n *\n * @param savedSearch - SavedSearch to extract from the cache.\n */\n async getResults(savedSearch: SavedSearch): Promise {\n let results = this.resultCache.get(savedSearch.id);\n\n if (!results) {\n results = new SavedSearchResults(savedSearch);\n }\n\n if (!results.data.results.length) {\n this.resultCache.set(savedSearch.id, results);\n await this.getResultPage(results, 0);\n }\n\n return results;\n }\n\n /**\n * Gets a specific result page for a saved search\n *\n * @param results - The saved search to extract results from\n * @param page - Which page of results do we want.\n */\n async getResultPage(results: SavedSearchResults, page: number) {\n results.loading = true;\n results.params.offset = page * results.params.count;\n\n try {\n const res = await firstValueFrom(\n this.backend.get(`${this.url}/${results.savedSearch.id}/_evaluate`, results.params.toHttpParams())\n );\n\n Object.assign(results.data, res.results);\n\n return results.data;\n } finally {\n results.loading = false;\n }\n }\n\n}\n","import { NgFor, NgIf, NgOptimizedImage } from '@angular/common';\nimport { Component, OnInit } from '@angular/core';\nimport { ActivatedRoute, Router, RouterLink } from '@angular/router';\nimport { SpinnerComponent } from '@forgerock/backstage-ui-components';\nimport { MAX_RESULTS } from '@forgerock/backstage-ui-core';\nimport { NgbPagination } from '@ng-bootstrap/ng-bootstrap';\nimport { BreadcrumbsComponent } from '../breadcrumbs/breadcrumbs.component';\nimport { DigestComponent } from '../digest/digest.component';\nimport { LibraryService } from '../library.service';\nimport { Library } from '../model/library';\nimport { SavedSearchResults } from '../model/saved-search-results';\nimport { PageComponent } from '../page/page.component';\nimport { SavedSearchRoutePipe } from '../pipe/saved-search-route.pipe';\nimport { SavedSearchService } from '../saved-search.service';\nimport { ScrollService } from '../scroll.service';\nimport { SearchBarComponent } from '../search-bar/search-bar.component';\n\n@Component({\n selector: 'app-saved-search',\n templateUrl: './saved-search.component.html',\n styleUrls: [ './saved-search.component.scss' ],\n standalone: true,\n imports: [ NgIf, PageComponent, BreadcrumbsComponent, SearchBarComponent, NgFor, NgbPagination, RouterLink,\n DigestComponent, SavedSearchRoutePipe, NgOptimizedImage, SpinnerComponent ]\n})\nexport class SavedSearchComponent implements OnInit {\n library: Library = {} as Library;\n results: SavedSearchResults;\n loading = false;\n page = 1;\n\n constructor(private libraryService: LibraryService,\n private savedSearchService: SavedSearchService,\n private scrollService: ScrollService,\n private route: ActivatedRoute,\n private router: Router) {\n }\n\n async ngOnInit() {\n this.route.params.subscribe(async params => {\n this.loading = true;\n const { libraryId, savedSearchId } = params;\n try {\n const [ library, savedSearch ] = await Promise.all([\n this.libraryService.getLibrary(libraryId),\n this.savedSearchService.getSavedSearch(savedSearchId)\n ]);\n this.library = library;\n this.results = await this.savedSearchService.getResults(savedSearch);\n this.scrollService.scrollToTop();\n this.loading = false;\n } catch {\n await this.router.navigate([ 'not-found' ]);\n }\n });\n }\n\n /**\n * Gets the correct search result page from the backend\n */\n async search() {\n this.loading = true;\n\n try {\n await this.savedSearchService.getResultPage(this.results, this.page - 1);\n } catch {\n // ignore\n }\n\n this.loading = false;\n }\n\n /**\n * Returns the result limit if the result size exceeds it, otherwise the actual result size.\n * This is needed because results beyond the max size cannot be reached via the search endpoint\n *\n * @return\n */\n getMaxSize() {\n return Math.min(this.results.data.total, MAX_RESULTS);\n }\n\n}\n","import { Directive, EventEmitter, HostListener, Input, Output } from '@angular/core';\n\n\n@Directive({\n selector: '[appScrollSpy]',\n standalone: true\n})\nexport class ScrollSpyDirective {\n @Input() appScrollSpy: Element[];\n @Input() offsetTop: number;\n @Output() activeChange = new EventEmitter();\n\n checkSpy(offset: number) {\n if (!this.appScrollSpy) {\n return;\n }\n\n const buffer = 1;\n let current = this.appScrollSpy.at(0);\n\n // Iterate through all the headings to find the one with the smallest negative top position\n this.appScrollSpy.forEach(element => {\n const heading = element.getBoundingClientRect();\n const viewportTop = offset + buffer;\n\n if (heading.top <= viewportTop && (heading.top - viewportTop) >= current.getBoundingClientRect().top - viewportTop) {\n current = element;\n }\n });\n\n this.activeChange.emit(current.id);\n }\n\n @HostListener('window:scroll')\n onScroll() {\n if (this.appScrollSpy) {\n this.checkSpy(this.offsetTop);\n }\n }\n}\n","import { Inject, Injectable } from '@angular/core';\nimport { WINDOW } from '@forgerock/backstage-ui-core';\n\n@Injectable({ providedIn: 'root' })\nexport class ScrollService {\n\n constructor(@Inject(WINDOW) private window: Window) {}\n\n scrollTo(offsetTop: number) {\n setTimeout(() => this.window.scrollTo(0, offsetTop));\n }\n\n scrollToTop(): void {\n this.scrollTo(0);\n }\n\n scrollToElement(id: string, offset = 0) {\n const element = this.getElement(id);\n\n if (element) {\n this.scrollTo(this.getOffsetTop(element) - offset);\n }\n }\n\n /**\n * Returns the first element with a matching ID attribute or an anchor element with a matching name attribute\n *\n * @param id Element ID or anchor name\n * @returns\n */\n getElement(id: string): HTMLElement {\n const element = this.window.document.getElementById(id);\n\n return element ?? this.window.document.querySelector(`a[name=\"${id}\"]`);\n }\n\n /**\n * Gets the vertical scroll offset of the window\n *\n * @return\n */\n getY(): number {\n return this.window.scrollY;\n }\n\n getOffsetTop(element: HTMLElement) {\n let offsetTop = 0;\n\n while (element) {\n if (!isNaN(element.offsetTop)) {\n offsetTop += element.offsetTop;\n element = element.offsetParent as HTMLElement;\n }\n }\n\n return offsetTop;\n }\n\n}\n","import { JsonPipe, NgIf } from '@angular/common';\nimport { AfterViewInit, Component, ElementRef, Inject, Input, OnInit, ViewChild } from '@angular/core';\nimport { FormsModule } from '@angular/forms';\nimport { ActivatedRoute, Params } from '@angular/router';\nimport { SearchFilter, toHttpParams, WINDOW } from '@forgerock/backstage-ui-core';\nimport { NgbTypeahead, NgbTypeaheadSelectItemEvent } from '@ng-bootstrap/ng-bootstrap';\nimport json from 'highlight.js/lib/languages/json';\nimport { OperatorFunction, Subscription } from 'rxjs';\nimport { filter, map } from 'rxjs/operators';\nimport { KnowledgeInstantSearchService } from '../knowledge-instant-search.service';\nimport { KnowledgeSearchService } from '../knowledge-search.service';\nimport { Article } from '../model/article';\nimport { LibraryId } from '../model/library';\nimport { FilteredSearchPipe } from '../pipe/filtered-search.pipe';\n\n@Component({\n selector: 'app-search-bar',\n templateUrl: './search-bar.component.html',\n styleUrls: [ './search-bar.component.scss' ],\n standalone: true,\n imports: [ FormsModule, NgbTypeahead, NgIf, FilteredSearchPipe, JsonPipe ]\n})\nexport class SearchBarComponent implements OnInit, AfterViewInit {\n @ViewChild(NgbTypeahead) typeahead: NgbTypeahead;\n @Input() placeholder: string;\n @Input() libraryId: LibraryId;\n @Input() filters: SearchFilter[] = [];\n @Input() query: string;\n routeSub: Subscription;\n\n @ViewChild(\"input\") inputElement: ElementRef;\n\n constructor(private route: ActivatedRoute,\n private instantSearchService: KnowledgeInstantSearchService,\n private knowledgeSearchService: KnowledgeSearchService,\n @Inject(WINDOW) private window: any) {\n }\n\n ngOnInit() {\n this.routeSub = this.route.queryParams.subscribe(params => {\n const query = params[ 'q' ];\n if (!this.query && !!query) {\n this.query = query;\n }\n });\n }\n\n ngAfterViewInit() {\n this.inputElement.nativeElement.focus();\n }\n\n search(query?) {\n const queryParams = toHttpParams({\n ...this.filtersToParams(),\n t: 'all',\n q: query,\n source: 'knowledge'\n });\n this.window.location.assign(`/search?${queryParams}`);\n }\n\n filtersToParams(): Params {\n return this.knowledgeSearchService.filtersToParams(this.filters || []);\n }\n\n autoCompleteSearch: OperatorFunction = input =>\n this.instantSearchService\n .search(input.pipe(filter(text => text?.length > 2)))\n .pipe(map(results => this.query ? [ { query: this.query }, ...results ] : []));\n\n onSelectResult(event: NgbTypeaheadSelectItemEvent) {\n const article: Article = event.item;\n event.preventDefault();\n window.location.assign(article.url);\n }\n\n protected readonly json = json;\n}\n\ntype SuggestionResult = Article | { query: string } | undefined;\n","import { NgFor } from '@angular/common';\nimport { Component, Input, OnChanges, SimpleChanges } from '@angular/core';\nimport { Taxon } from '../model/taxon';\nimport { StyledTaxonComponent } from '../styled-taxon/styled-taxon.component';\nimport { TaxonomyService } from '../taxonomy.service';\n\n@Component({\n selector: 'app-styled-taxon-list',\n templateUrl: './styled-taxon-list.component.html',\n styleUrls: [ './styled-taxon-list.component.scss' ],\n standalone: true,\n imports: [ NgFor, StyledTaxonComponent ]\n})\nexport class StyledTaxonListComponent implements OnChanges {\n @Input() taxonIds: string[];\n @Input() libraryId: string;\n taxa: Taxon[] = [];\n\n constructor(private taxonomyService: TaxonomyService) {}\n\n async ngOnChanges({ taxonIds, libraryId }: SimpleChanges): Promise {\n if (libraryId && taxonIds) {\n const taxa= await this.taxonomyService.getTaxa(libraryId.currentValue, taxonIds.currentValue);\n this.taxa = taxa.filter(taxon => taxon.emphasis && taxon.style);\n }\n }\n}\n","import { NgIf } from '@angular/common';\nimport { Component, Input, OnInit } from '@angular/core';\nimport { TaxonomyStyle } from '../model/taxonomy-config';\nimport { TaxonomyConfigService } from '../taxonomy-config.service';\n\n@Component({\n selector: 'app-styled-taxon',\n templateUrl: './styled-taxon.component.html',\n styleUrls: [ './styled-taxon.component.scss' ],\n standalone: true,\n imports: [ NgIf ]\n})\nexport class StyledTaxonComponent implements OnInit {\n @Input() styleId: string;\n @Input() libraryId: string;\n style: TaxonomyStyle;\n\n constructor(private taxonomyConfigService: TaxonomyConfigService) {\n }\n\n async ngOnInit(): Promise {\n this.style = await this.taxonomyConfigService.getStyle(this.libraryId, this.styleId);\n }\n\n}\n","import { Injectable } from '@angular/core';\nimport { TableOfContentsChapter } from '@forgerock/backstage-ui-components';\nimport { BookContent, isArticleChapter, isChapterGroup } from './model/chapter';\n\n@Injectable({\n providedIn: 'root'\n})\nexport class TableOfContentsService {\n\n /**\n * Takes a list of header elements and arranges them into a table of contents tree. The tree structure mirrors the\n * hierarchy that exists between heading elements. E.g. h1 will be a parent of h2, h2 will be a parent of h3, and so\n * on.\n *\n * @param headings\n */\n toArticleTableOfContents(headings: Element[]): TableOfContentsChapter[] {\n const nodes = headings.map(heading => {\n return {\n id: heading.id,\n tagName: heading.tagName,\n textContent: heading.textContent,\n contents: []\n };\n });\n const stack = [ { tagName: \"\", textContent: \"\", contents: [] } ];\n\n nodes.forEach(node => {\n let top = stack.at(-1);\n\n while (top.tagName >= node.tagName) {\n stack.pop();\n top = stack.at(-1);\n }\n\n top.contents.push({ id: node.id, title: node.textContent, contents: node.contents });\n stack.push(node);\n });\n\n return stack[ 0 ].contents;\n }\n\n toBookTableOfContents(contents: BookContent[]): TableOfContentsChapter[] {\n return contents.map(content => {\n if (isChapterGroup(content)) {\n return {\n id: content.id,\n title: content.title,\n heading: true,\n contents: this.toBookTableOfContents(content.contents)\n }\n } else if (isArticleChapter(content)) {\n return {\n id: content.id,\n title: content.doc.title,\n contents: []\n }\n } else {\n throw new Error('Unknown content type');\n }\n });\n }\n}\n","import { NgFor } from '@angular/common';\nimport { Component, Input, OnChanges, SimpleChanges } from '@angular/core';\nimport { EllipsisComponent } from '@forgerock/backstage-ui-components';\nimport { ProductTreePath, ProductTreeService } from '@forgerock/backstage-ui-core';\nimport { LibraryId } from '../model/library';\nimport { FAMILY_ID, LATEST, PRODUCT_ID, ProductPath } from '../model/product-path';\nimport { TaxonomyService } from '../taxonomy.service';\n\n@Component({\n selector: 'app-tags',\n templateUrl: './tags.component.html',\n styleUrls: [ './tags.component.scss' ],\n standalone: true,\n imports: [ NgFor, EllipsisComponent ]\n})\nexport class TagsComponent implements OnChanges {\n @Input() library: LibraryId;\n @Input() taxonIds: string[];\n @Input() paths: string[];\n\n tags: string[];\n private productDisplayValues: { [ key: string ]: string } = {};\n\n constructor(private productTreeService: ProductTreeService,\n private taxonomyService: TaxonomyService) {}\n\n async ngOnChanges({ paths, taxonIds }: SimpleChanges): Promise {\n const [ productVersionPaths, taxa ] = await Promise.all([\n paths?.currentValue ? this.getPathDisplayValues(paths?.currentValue) : Promise.resolve([]),\n taxonIds?.currentValue ? this.taxonomyService.getTaxa(this.library, taxonIds?.currentValue) : Promise.resolve([])\n ]);\n\n const taxaLabels = taxa.filter(taxon => !taxon.emphasis && !taxon.style)\n .map(taxon => taxon.title);\n this.tags = [ ...productVersionPaths, ...taxaLabels ].sort();\n }\n\n /**\n * Takes the given product version paths, groups versions by product and then converts each group into the following\n * format: product [ list of versions ]. E.g. IDM 7.1, 7,2, 7\n *\n * @param paths - a list of product version paths e.g. /familyId:am/productId:openam/version:7\n * @private\n */\n private async getPathDisplayValues(paths: string[]): Promise {\n const segments: Partial[] = paths.map((path: string) => ProductTreePath.parse(path).toMap());\n\n for (const { familyId, productId } of segments) {\n this.productDisplayValues[ productId ] = await this.getDisplayValue({ familyId, productId });\n }\n\n return this.groupByProduct(segments).map((path: [ string, Partial[] ]) => this.toLabel(path))\n .filter(it => !!it);\n }\n\n private groupByProduct(segments: Partial[]): [ string, Partial[] ][] {\n const productToProductPaths = segments.reduce(\n (accumulator: { [ key: string ]: Partial[] }, path: Partial) => {\n accumulator[ path.productId ] = [ ...(accumulator[ path.productId ] ?? []), path ];\n\n return accumulator;\n }, {}\n );\n\n return Object.entries(productToProductPaths);\n }\n\n private toLabel(productIdToSegments: [ string, Partial[] ]): string {\n const [ productId, paths ] = productIdToSegments;\n\n if (!productId) {\n return '';\n }\n\n const product = this.productDisplayValues[ productId ];\n\n const versions = paths.map(({ minorVersion, version }) => version ?? minorVersion)\n .filter(version => version && version !== LATEST)\n .sort()\n .reverse()\n .join(', ');\n\n return versions ? `${product} ${versions}` : product;\n }\n\n private async getDisplayValue({ familyId, productId }: Partial): Promise {\n const subPath = new ProductTreePath([ [ FAMILY_ID, familyId ], [ PRODUCT_ID, productId ] ]).toString();\n\n try {\n const node = await this.productTreeService.getNodeAtPath(subPath);\n\n return node.shortDisplayValue ?? node.displayValue;\n } catch {\n return '';\n }\n }\n}\n","import { Injectable } from '@angular/core';\nimport { BackendService } from '@forgerock/backstage-ui-core';\nimport { LibraryId } from './model/library';\nimport { TaxonomyConfig, TaxonomyStyle } from './model/taxonomy-config';\n\n@Injectable({\n providedIn: 'root'\n})\nexport class TaxonomyConfigService {\n private config: Map> = new Map();\n url = libraryId => `/knowledge-ws/api/v1/library/${libraryId}/config/taxonomy`;\n\n constructor(private backend: BackendService) {\n }\n\n getConfig(libraryId: LibraryId): Promise {\n if (!this.config.has(libraryId)) {\n const promise = this.backend.get(this.url(libraryId)).toPromise();\n this.config.set(libraryId, promise);\n }\n return this.config.get(libraryId);\n }\n\n async getStyle(libraryId: LibraryId, styleId: string): Promise {\n const config = await this.getConfig(libraryId);\n return config.styles.find(style => style.id === styleId);\n }\n}\n","import { Injectable } from '@angular/core';\nimport { BackendService } from '@forgerock/backstage-ui-core';\n\nimport { LibraryId } from './model/library';\nimport { Taxon } from './model/taxon';\nimport { Taxonomy } from './model/taxonomy';\n\n@Injectable({ providedIn: 'root' })\nexport class TaxonomyService {\n private cache = new Map>();\n\n constructor(private backend: BackendService) {\n }\n\n /**\n * Gets a cached taxa structure for a library\n *\n * @param libraryId - id of the library to retrieve from the cache\n * @return\n */\n getTaxonomy(libraryId: LibraryId): Promise {\n let taxonomy$ = this.cache.get(libraryId);\n\n if (!taxonomy$) {\n taxonomy$ = this.backend.get(`${this.url(libraryId)}`).toPromise();\n this.cache.set(libraryId, taxonomy$);\n }\n\n return taxonomy$;\n }\n\n url(libraryId: LibraryId): string {\n return `/knowledge-ws/api/v1/library/${libraryId}/taxonomy/_newest?count=true`;\n }\n\n /**\n * Creates an empty Taxon and mixes in the details once the taxa\n * has arrived from the backend\n *\n * @param libraryId - Library to find the taxa of.\n * @param taxonId - the id of the taxon to retrieve.\n * @return\n */\n async getTaxon(libraryId: LibraryId, taxonId: string): Promise {\n const taxonomy = await this.getTaxonomy(libraryId);\n return this.getTaxonSync(taxonomy, taxonId);\n }\n\n async getTaxa(libraryId: LibraryId, taxonIds: string[]): Promise {\n const taxonomy = await this.getTaxonomy(libraryId);\n\n return taxonIds.map(id => this.getTaxonSync(taxonomy, id))\n .filter(taxon => !taxon.deleted);\n }\n\n getTaxonSync(taxonomy: Taxonomy, taxonId: string): Taxon {\n const taxon: Taxon = {\n id: taxonId,\n title: null,\n path: '',\n deleted: true\n };\n\n this.searchTree(taxon, { title: '', items: taxonomy.data } as Taxon);\n\n return taxon;\n }\n\n private searchTree(taxon: Taxon, parent: Taxon) {\n for (const item of parent.items) {\n item.parent = parent;\n if (item.id === taxon.id) {\n taxon.title = item.title;\n taxon.deleted = item.deleted;\n taxon.emphasis = item.emphasis;\n taxon.hidden = item.hidden;\n taxon.style = item.style;\n this.findAndSetParent(taxon, item);\n break;\n }\n this.searchTree(taxon, item);\n }\n }\n\n private findAndSetParent(taxon: Taxon, node: Taxon) {\n if (node && node.parent) {\n taxon.path = `${node.parent.title}/${taxon.path}`;\n this.findAndSetParent(taxon, node.parent);\n }\n }\n\n}\n","import { NgIf } from '@angular/common';\nimport { Component, OnInit } from '@angular/core';\nimport { ActivatedRoute } from '@angular/router';\nimport { SpinnerComponent } from '@forgerock/backstage-ui-components';\nimport { BreadcrumbsComponent } from '../breadcrumbs/breadcrumbs.component';\n\nimport { DigestService } from '../digest.service';\n\n@Component({\n selector: 'app-unsubscribe',\n templateUrl: './unsubscribe.component.html',\n styleUrls: [ './unsubscribe.component.css' ],\n standalone: true,\n imports: [ BreadcrumbsComponent, NgIf, SpinnerComponent ]\n})\nexport class UnsubscribeComponent implements OnInit {\n spinning = false;\n success = false;\n error: string;\n title: string;\n\n constructor(private digestService: DigestService,\n private route: ActivatedRoute) {\n }\n\n async ngOnInit() {\n const { key, name } = this.route.snapshot.queryParams;\n\n this.title = name;\n\n this.spinning = true;\n\n try {\n await this.digestService.unsubscribeWithKey(key);\n this.success = true;\n } catch (err) {\n this.error = err.message;\n } finally {\n this.spinning = false;\n }\n }\n\n}\n","// The file contents for the current environment will overwrite these during build.\n// The build system defaults to the dev environment which uses `environment.ts`, but if you do\n// `ng build --env=prod` then `environment.prod.ts` will be used instead.\n// The list of which env maps to which file can be found in `.angular-cli.json`.\n\nexport const environment = {\n production: false\n};\n","/// \n\nimport { enableProdMode } from '@angular/core';\nimport { bootstrapApplication } from '@angular/platform-browser';\nimport { AppComponent } from './app/app.component';\nimport { appConfig } from './app/app.config';\n\n\nimport { environment } from './environments/environment';\n\nif (environment.production) {\n enableProdMode();\n}\n\ndocument.addEventListener('DOMContentLoaded', () => {\n bootstrapApplication(AppComponent, appConfig)\n .catch(err => {\n document.getElementById('app-error').style.display = 'block';\n console.error(err);\n });\n});\n","import getCompositeRect from \"./dom-utils/getCompositeRect.js\";\nimport getLayoutRect from \"./dom-utils/getLayoutRect.js\";\nimport listScrollParents from \"./dom-utils/listScrollParents.js\";\nimport getOffsetParent from \"./dom-utils/getOffsetParent.js\";\nimport orderModifiers from \"./utils/orderModifiers.js\";\nimport debounce from \"./utils/debounce.js\";\nimport mergeByName from \"./utils/mergeByName.js\";\nimport detectOverflow from \"./utils/detectOverflow.js\";\nimport { isElement } from \"./dom-utils/instanceOf.js\";\nvar DEFAULT_OPTIONS = {\n placement: 'bottom',\n modifiers: [],\n strategy: 'absolute'\n};\n\nfunction areValidElements() {\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n return !args.some(function (element) {\n return !(element && typeof element.getBoundingClientRect === 'function');\n });\n}\n\nexport function popperGenerator(generatorOptions) {\n if (generatorOptions === void 0) {\n generatorOptions = {};\n }\n\n var _generatorOptions = generatorOptions,\n _generatorOptions$def = _generatorOptions.defaultModifiers,\n defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,\n _generatorOptions$def2 = _generatorOptions.defaultOptions,\n defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;\n return function createPopper(reference, popper, options) {\n if (options === void 0) {\n options = defaultOptions;\n }\n\n var state = {\n placement: 'bottom',\n orderedModifiers: [],\n options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),\n modifiersData: {},\n elements: {\n reference: reference,\n popper: popper\n },\n attributes: {},\n styles: {}\n };\n var effectCleanupFns = [];\n var isDestroyed = false;\n var instance = {\n state: state,\n setOptions: function setOptions(setOptionsAction) {\n var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;\n cleanupModifierEffects();\n state.options = Object.assign({}, defaultOptions, state.options, options);\n state.scrollParents = {\n reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],\n popper: listScrollParents(popper)\n }; // Orders the modifiers based on their dependencies and `phase`\n // properties\n\n var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers\n\n state.orderedModifiers = orderedModifiers.filter(function (m) {\n return m.enabled;\n });\n runModifierEffects();\n return instance.update();\n },\n // Sync update â€“ it will always be executed, even if not necessary. This\n // is useful for low frequency updates where sync behavior simplifies the\n // logic.\n // For high frequency updates (e.g. `resize` and `scroll` events), always\n // prefer the async Popper#update method\n forceUpdate: function forceUpdate() {\n if (isDestroyed) {\n return;\n }\n\n var _state$elements = state.elements,\n reference = _state$elements.reference,\n popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements\n // anymore\n\n if (!areValidElements(reference, popper)) {\n return;\n } // Store the reference and popper rects to be read by modifiers\n\n\n state.rects = {\n reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),\n popper: getLayoutRect(popper)\n }; // Modifiers have the ability to reset the current update cycle. The\n // most common use case for this is the `flip` modifier changing the\n // placement, which then needs to re-run all the modifiers, because the\n // logic was previously ran for the previous placement and is therefore\n // stale/incorrect\n\n state.reset = false;\n state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier\n // is filled with the initial data specified by the modifier. This means\n // it doesn't persist and is fresh on each update.\n // To ensure persistent data, use `${name}#persistent`\n\n state.orderedModifiers.forEach(function (modifier) {\n return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);\n });\n\n for (var index = 0; index < state.orderedModifiers.length; index++) {\n if (state.reset === true) {\n state.reset = false;\n index = -1;\n continue;\n }\n\n var _state$orderedModifie = state.orderedModifiers[index],\n fn = _state$orderedModifie.fn,\n _state$orderedModifie2 = _state$orderedModifie.options,\n _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,\n name = _state$orderedModifie.name;\n\n if (typeof fn === 'function') {\n state = fn({\n state: state,\n options: _options,\n name: name,\n instance: instance\n }) || state;\n }\n }\n },\n // Async and optimistically optimized update â€“ it will not be executed if\n // not necessary (debounced to run at most once-per-tick)\n update: debounce(function () {\n return new Promise(function (resolve) {\n instance.forceUpdate();\n resolve(state);\n });\n }),\n destroy: function destroy() {\n cleanupModifierEffects();\n isDestroyed = true;\n }\n };\n\n if (!areValidElements(reference, popper)) {\n return instance;\n }\n\n instance.setOptions(options).then(function (state) {\n if (!isDestroyed && options.onFirstUpdate) {\n options.onFirstUpdate(state);\n }\n }); // Modifiers have the ability to execute arbitrary code before the first\n // update cycle runs. They will be executed in the same order as the update\n // cycle. This is useful when a modifier adds some persistent data that\n // other modifiers need to use, but the modifier is run after the dependent\n // one.\n\n function runModifierEffects() {\n state.orderedModifiers.forEach(function (_ref) {\n var name = _ref.name,\n _ref$options = _ref.options,\n options = _ref$options === void 0 ? {} : _ref$options,\n effect = _ref.effect;\n\n if (typeof effect === 'function') {\n var cleanupFn = effect({\n state: state,\n name: name,\n instance: instance,\n options: options\n });\n\n var noopFn = function noopFn() {};\n\n effectCleanupFns.push(cleanupFn || noopFn);\n }\n });\n }\n\n function cleanupModifierEffects() {\n effectCleanupFns.forEach(function (fn) {\n return fn();\n });\n effectCleanupFns = [];\n }\n\n return instance;\n };\n}\nexport var createPopper = /*#__PURE__*/popperGenerator(); // eslint-disable-next-line import/no-unused-modules\n\nexport { detectOverflow };","import { isShadowRoot } from \"./instanceOf.js\";\nexport default function contains(parent, child) {\n var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method\n\n if (parent.contains(child)) {\n return true;\n } // then fallback to custom implementation with Shadow DOM support\n else if (rootNode && isShadowRoot(rootNode)) {\n var next = child;\n\n do {\n if (next && parent.isSameNode(next)) {\n return true;\n } // $FlowFixMe[prop-missing]: need a better way to handle this...\n\n\n next = next.parentNode || next.host;\n } while (next);\n } // Give up, the result is false\n\n\n return false;\n}","import { isElement, isHTMLElement } from \"./instanceOf.js\";\nimport { round } from \"../utils/math.js\";\nimport getWindow from \"./getWindow.js\";\nimport isLayoutViewport from \"./isLayoutViewport.js\";\nexport default function getBoundingClientRect(element, includeScale, isFixedStrategy) {\n if (includeScale === void 0) {\n includeScale = false;\n }\n\n if (isFixedStrategy === void 0) {\n isFixedStrategy = false;\n }\n\n var clientRect = element.getBoundingClientRect();\n var scaleX = 1;\n var scaleY = 1;\n\n if (includeScale && isHTMLElement(element)) {\n scaleX = element.offsetWidth > 0 ? round(clientRect.width) / element.offsetWidth || 1 : 1;\n scaleY = element.offsetHeight > 0 ? round(clientRect.height) / element.offsetHeight || 1 : 1;\n }\n\n var _ref = isElement(element) ? getWindow(element) : window,\n visualViewport = _ref.visualViewport;\n\n var addVisualOffsets = !isLayoutViewport() && isFixedStrategy;\n var x = (clientRect.left + (addVisualOffsets && visualViewport ? visualViewport.offsetLeft : 0)) / scaleX;\n var y = (clientRect.top + (addVisualOffsets && visualViewport ? visualViewport.offsetTop : 0)) / scaleY;\n var width = clientRect.width / scaleX;\n var height = clientRect.height / scaleY;\n return {\n width: width,\n height: height,\n top: y,\n right: x + width,\n bottom: y + height,\n left: x,\n x: x,\n y: y\n };\n}","import { viewport } from \"../enums.js\";\nimport getViewportRect from \"./getViewportRect.js\";\nimport getDocumentRect from \"./getDocumentRect.js\";\nimport listScrollParents from \"./listScrollParents.js\";\nimport getOffsetParent from \"./getOffsetParent.js\";\nimport getDocumentElement from \"./getDocumentElement.js\";\nimport getComputedStyle from \"./getComputedStyle.js\";\nimport { isElement, isHTMLElement } from \"./instanceOf.js\";\nimport getBoundingClientRect from \"./getBoundingClientRect.js\";\nimport getParentNode from \"./getParentNode.js\";\nimport contains from \"./contains.js\";\nimport getNodeName from \"./getNodeName.js\";\nimport rectToClientRect from \"../utils/rectToClientRect.js\";\nimport { max, min } from \"../utils/math.js\";\n\nfunction getInnerBoundingClientRect(element, strategy) {\n var rect = getBoundingClientRect(element, false, strategy === 'fixed');\n rect.top = rect.top + element.clientTop;\n rect.left = rect.left + element.clientLeft;\n rect.bottom = rect.top + element.clientHeight;\n rect.right = rect.left + element.clientWidth;\n rect.width = element.clientWidth;\n rect.height = element.clientHeight;\n rect.x = rect.left;\n rect.y = rect.top;\n return rect;\n}\n\nfunction getClientRectFromMixedType(element, clippingParent, strategy) {\n return clippingParent === viewport ? rectToClientRect(getViewportRect(element, strategy)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent, strategy) : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n} // A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\n\n\nfunction getClippingParents(element) {\n var clippingParents = listScrollParents(getParentNode(element));\n var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;\n\n if (!isElement(clipperElement)) {\n return [];\n } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n\n\n return clippingParents.filter(function (clippingParent) {\n return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body';\n });\n} // Gets the maximum area that the element is visible in due to any number of\n// clipping parents\n\n\nexport default function getClippingRect(element, boundary, rootBoundary, strategy) {\n var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);\n var clippingParents = [].concat(mainClippingParents, [rootBoundary]);\n var firstClippingParent = clippingParents[0];\n var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {\n var rect = getClientRectFromMixedType(element, clippingParent, strategy);\n accRect.top = max(rect.top, accRect.top);\n accRect.right = min(rect.right, accRect.right);\n accRect.bottom = min(rect.bottom, accRect.bottom);\n accRect.left = max(rect.left, accRect.left);\n return accRect;\n }, getClientRectFromMixedType(element, firstClippingParent, strategy));\n clippingRect.width = clippingRect.right - clippingRect.left;\n clippingRect.height = clippingRect.bottom - clippingRect.top;\n clippingRect.x = clippingRect.left;\n clippingRect.y = clippingRect.top;\n return clippingRect;\n}","import getBoundingClientRect from \"./getBoundingClientRect.js\";\nimport getNodeScroll from \"./getNodeScroll.js\";\nimport getNodeName from \"./getNodeName.js\";\nimport { isHTMLElement } from \"./instanceOf.js\";\nimport getWindowScrollBarX from \"./getWindowScrollBarX.js\";\nimport getDocumentElement from \"./getDocumentElement.js\";\nimport isScrollParent from \"./isScrollParent.js\";\nimport { round } from \"../utils/math.js\";\n\nfunction isElementScaled(element) {\n var rect = element.getBoundingClientRect();\n var scaleX = round(rect.width) / element.offsetWidth || 1;\n var scaleY = round(rect.height) / element.offsetHeight || 1;\n return scaleX !== 1 || scaleY !== 1;\n} // Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\n\n\nexport default function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {\n if (isFixed === void 0) {\n isFixed = false;\n }\n\n var isOffsetParentAnElement = isHTMLElement(offsetParent);\n var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n var documentElement = getDocumentElement(offsetParent);\n var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled, isFixed);\n var scroll = {\n scrollLeft: 0,\n scrollTop: 0\n };\n var offsets = {\n x: 0,\n y: 0\n };\n\n if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {\n if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078\n isScrollParent(documentElement)) {\n scroll = getNodeScroll(offsetParent);\n }\n\n if (isHTMLElement(offsetParent)) {\n offsets = getBoundingClientRect(offsetParent, true);\n offsets.x += offsetParent.clientLeft;\n offsets.y += offsetParent.clientTop;\n } else if (documentElement) {\n offsets.x = getWindowScrollBarX(documentElement);\n }\n }\n\n return {\n x: rect.left + scroll.scrollLeft - offsets.x,\n y: rect.top + scroll.scrollTop - offsets.y,\n width: rect.width,\n height: rect.height\n };\n}","import getWindow from \"./getWindow.js\";\nexport default function getComputedStyle(element) {\n return getWindow(element).getComputedStyle(element);\n}","import { isElement } from \"./instanceOf.js\";\nexport default function getDocumentElement(element) {\n // $FlowFixMe[incompatible-return]: assume body is always available\n return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]\n element.document) || window.document).documentElement;\n}","import getDocumentElement from \"./getDocumentElement.js\";\nimport getComputedStyle from \"./getComputedStyle.js\";\nimport getWindowScrollBarX from \"./getWindowScrollBarX.js\";\nimport getWindowScroll from \"./getWindowScroll.js\";\nimport { max } from \"../utils/math.js\"; // Gets the entire size of the scrollable document area, even extending outside\n// of the `` and `` rect bounds if horizontally scrollable\n\nexport default function getDocumentRect(element) {\n var _element$ownerDocumen;\n\n var html = getDocumentElement(element);\n var winScroll = getWindowScroll(element);\n var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;\n var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);\n var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);\n var x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n var y = -winScroll.scrollTop;\n\n if (getComputedStyle(body || html).direction === 'rtl') {\n x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n }\n\n return {\n width: width,\n height: height,\n x: x,\n y: y\n };\n}","export default function getHTMLElementScroll(element) {\n return {\n scrollLeft: element.scrollLeft,\n scrollTop: element.scrollTop\n };\n}","import getBoundingClientRect from \"./getBoundingClientRect.js\"; // Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\n\nexport default function getLayoutRect(element) {\n var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.\n // Fixes https://github.com/popperjs/popper-core/issues/1223\n\n var width = element.offsetWidth;\n var height = element.offsetHeight;\n\n if (Math.abs(clientRect.width - width) <= 1) {\n width = clientRect.width;\n }\n\n if (Math.abs(clientRect.height - height) <= 1) {\n height = clientRect.height;\n }\n\n return {\n x: element.offsetLeft,\n y: element.offsetTop,\n width: width,\n height: height\n };\n}","export default function getNodeName(element) {\n return element ? (element.nodeName || '').toLowerCase() : null;\n}","import getWindowScroll from \"./getWindowScroll.js\";\nimport getWindow from \"./getWindow.js\";\nimport { isHTMLElement } from \"./instanceOf.js\";\nimport getHTMLElementScroll from \"./getHTMLElementScroll.js\";\nexport default function getNodeScroll(node) {\n if (node === getWindow(node) || !isHTMLElement(node)) {\n return getWindowScroll(node);\n } else {\n return getHTMLElementScroll(node);\n }\n}","import getWindow from \"./getWindow.js\";\nimport getNodeName from \"./getNodeName.js\";\nimport getComputedStyle from \"./getComputedStyle.js\";\nimport { isHTMLElement, isShadowRoot } from \"./instanceOf.js\";\nimport isTableElement from \"./isTableElement.js\";\nimport getParentNode from \"./getParentNode.js\";\nimport getUAString from \"../utils/userAgent.js\";\n\nfunction getTrueOffsetParent(element) {\n if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837\n getComputedStyle(element).position === 'fixed') {\n return null;\n }\n\n return element.offsetParent;\n} // `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\n\n\nfunction getContainingBlock(element) {\n var isFirefox = /firefox/i.test(getUAString());\n var isIE = /Trident/i.test(getUAString());\n\n if (isIE && isHTMLElement(element)) {\n // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n var elementCss = getComputedStyle(element);\n\n if (elementCss.position === 'fixed') {\n return null;\n }\n }\n\n var currentNode = getParentNode(element);\n\n if (isShadowRoot(currentNode)) {\n currentNode = currentNode.host;\n }\n\n while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {\n var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that\n // create a containing block.\n // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n\n if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {\n return currentNode;\n } else {\n currentNode = currentNode.parentNode;\n }\n }\n\n return null;\n} // Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\n\n\nexport default function getOffsetParent(element) {\n var window = getWindow(element);\n var offsetParent = getTrueOffsetParent(element);\n\n while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {\n offsetParent = getTrueOffsetParent(offsetParent);\n }\n\n if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {\n return window;\n }\n\n return offsetParent || getContainingBlock(element) || window;\n}","import getNodeName from \"./getNodeName.js\";\nimport getDocumentElement from \"./getDocumentElement.js\";\nimport { isShadowRoot } from \"./instanceOf.js\";\nexport default function getParentNode(element) {\n if (getNodeName(element) === 'html') {\n return element;\n }\n\n return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle\n // $FlowFixMe[incompatible-return]\n // $FlowFixMe[prop-missing]\n element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n element.parentNode || ( // DOM Element detected\n isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n getDocumentElement(element) // fallback\n\n );\n}","import getParentNode from \"./getParentNode.js\";\nimport isScrollParent from \"./isScrollParent.js\";\nimport getNodeName from \"./getNodeName.js\";\nimport { isHTMLElement } from \"./instanceOf.js\";\nexport default function getScrollParent(node) {\n if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n // $FlowFixMe[incompatible-return]: assume body is always available\n return node.ownerDocument.body;\n }\n\n if (isHTMLElement(node) && isScrollParent(node)) {\n return node;\n }\n\n return getScrollParent(getParentNode(node));\n}","import getWindow from \"./getWindow.js\";\nimport getDocumentElement from \"./getDocumentElement.js\";\nimport getWindowScrollBarX from \"./getWindowScrollBarX.js\";\nimport isLayoutViewport from \"./isLayoutViewport.js\";\nexport default function getViewportRect(element, strategy) {\n var win = getWindow(element);\n var html = getDocumentElement(element);\n var visualViewport = win.visualViewport;\n var width = html.clientWidth;\n var height = html.clientHeight;\n var x = 0;\n var y = 0;\n\n if (visualViewport) {\n width = visualViewport.width;\n height = visualViewport.height;\n var layoutViewport = isLayoutViewport();\n\n if (layoutViewport || !layoutViewport && strategy === 'fixed') {\n x = visualViewport.offsetLeft;\n y = visualViewport.offsetTop;\n }\n }\n\n return {\n width: width,\n height: height,\n x: x + getWindowScrollBarX(element),\n y: y\n };\n}","export default function getWindow(node) {\n if (node == null) {\n return window;\n }\n\n if (node.toString() !== '[object Window]') {\n var ownerDocument = node.ownerDocument;\n return ownerDocument ? ownerDocument.defaultView || window : window;\n }\n\n return node;\n}","import getWindow from \"./getWindow.js\";\nexport default function getWindowScroll(node) {\n var win = getWindow(node);\n var scrollLeft = win.pageXOffset;\n var scrollTop = win.pageYOffset;\n return {\n scrollLeft: scrollLeft,\n scrollTop: scrollTop\n };\n}","import getBoundingClientRect from \"./getBoundingClientRect.js\";\nimport getDocumentElement from \"./getDocumentElement.js\";\nimport getWindowScroll from \"./getWindowScroll.js\";\nexport default function getWindowScrollBarX(element) {\n // If has a CSS width greater than the viewport, then this will be\n // incorrect for RTL.\n // Popper 1 is broken in this case and never had a bug report so let's assume\n // it's not an issue. I don't think anyone ever specifies width on \n // anyway.\n // Browsers where the left scrollbar doesn't cause an issue report `0` for\n // this (e.g. Edge 2019, IE11, Safari)\n return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;\n}","import getWindow from \"./getWindow.js\";\n\nfunction isElement(node) {\n var OwnElement = getWindow(node).Element;\n return node instanceof OwnElement || node instanceof Element;\n}\n\nfunction isHTMLElement(node) {\n var OwnElement = getWindow(node).HTMLElement;\n return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\nfunction isShadowRoot(node) {\n // IE 11 has no ShadowRoot\n if (typeof ShadowRoot === 'undefined') {\n return false;\n }\n\n var OwnElement = getWindow(node).ShadowRoot;\n return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };","import getUAString from \"../utils/userAgent.js\";\nexport default function isLayoutViewport() {\n return !/^((?!chrome|android).)*safari/i.test(getUAString());\n}","import getComputedStyle from \"./getComputedStyle.js\";\nexport default function isScrollParent(element) {\n // Firefox wants us to check `-x` and `-y` variations as well\n var _getComputedStyle = getComputedStyle(element),\n overflow = _getComputedStyle.overflow,\n overflowX = _getComputedStyle.overflowX,\n overflowY = _getComputedStyle.overflowY;\n\n return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}","import getNodeName from \"./getNodeName.js\";\nexport default function isTableElement(element) {\n return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}","import getScrollParent from \"./getScrollParent.js\";\nimport getParentNode from \"./getParentNode.js\";\nimport getWindow from \"./getWindow.js\";\nimport isScrollParent from \"./isScrollParent.js\";\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\n\nexport default function listScrollParents(element, list) {\n var _element$ownerDocumen;\n\n if (list === void 0) {\n list = [];\n }\n\n var scrollParent = getScrollParent(element);\n var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);\n var win = getWindow(scrollParent);\n var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;\n var updatedList = list.concat(target);\n return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n updatedList.concat(listScrollParents(getParentNode(target)));\n}","export var top = 'top';\nexport var bottom = 'bottom';\nexport var right = 'right';\nexport var left = 'left';\nexport var auto = 'auto';\nexport var basePlacements = [top, bottom, right, left];\nexport var start = 'start';\nexport var end = 'end';\nexport var clippingParents = 'clippingParents';\nexport var viewport = 'viewport';\nexport var popper = 'popper';\nexport var reference = 'reference';\nexport var variationPlacements = /*#__PURE__*/basePlacements.reduce(function (acc, placement) {\n return acc.concat([placement + \"-\" + start, placement + \"-\" + end]);\n}, []);\nexport var placements = /*#__PURE__*/[].concat(basePlacements, [auto]).reduce(function (acc, placement) {\n return acc.concat([placement, placement + \"-\" + start, placement + \"-\" + end]);\n}, []); // modifiers that need to read the DOM\n\nexport var beforeRead = 'beforeRead';\nexport var read = 'read';\nexport var afterRead = 'afterRead'; // pure-logic modifiers\n\nexport var beforeMain = 'beforeMain';\nexport var main = 'main';\nexport var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)\n\nexport var beforeWrite = 'beforeWrite';\nexport var write = 'write';\nexport var afterWrite = 'afterWrite';\nexport var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];","import getNodeName from \"../dom-utils/getNodeName.js\";\nimport { isHTMLElement } from \"../dom-utils/instanceOf.js\"; // This modifier takes the styles prepared by the `computeStyles` modifier\n// and applies them to the HTMLElements such as popper and arrow\n\nfunction applyStyles(_ref) {\n var state = _ref.state;\n Object.keys(state.elements).forEach(function (name) {\n var style = state.styles[name] || {};\n var attributes = state.attributes[name] || {};\n var element = state.elements[name]; // arrow is optional + virtual elements\n\n if (!isHTMLElement(element) || !getNodeName(element)) {\n return;\n } // Flow doesn't support to extend this property, but it's the most\n // effective way to apply styles to an HTMLElement\n // $FlowFixMe[cannot-write]\n\n\n Object.assign(element.style, style);\n Object.keys(attributes).forEach(function (name) {\n var value = attributes[name];\n\n if (value === false) {\n element.removeAttribute(name);\n } else {\n element.setAttribute(name, value === true ? '' : value);\n }\n });\n });\n}\n\nfunction effect(_ref2) {\n var state = _ref2.state;\n var initialStyles = {\n popper: {\n position: state.options.strategy,\n left: '0',\n top: '0',\n margin: '0'\n },\n arrow: {\n position: 'absolute'\n },\n reference: {}\n };\n Object.assign(state.elements.popper.style, initialStyles.popper);\n state.styles = initialStyles;\n\n if (state.elements.arrow) {\n Object.assign(state.elements.arrow.style, initialStyles.arrow);\n }\n\n return function () {\n Object.keys(state.elements).forEach(function (name) {\n var element = state.elements[name];\n var attributes = state.attributes[name] || {};\n var styleProperties = Object.keys(state.styles.hasOwnProperty(name) ? state.styles[name] : initialStyles[name]); // Set all values to an empty string to unset them\n\n var style = styleProperties.reduce(function (style, property) {\n style[property] = '';\n return style;\n }, {}); // arrow is optional + virtual elements\n\n if (!isHTMLElement(element) || !getNodeName(element)) {\n return;\n }\n\n Object.assign(element.style, style);\n Object.keys(attributes).forEach(function (attribute) {\n element.removeAttribute(attribute);\n });\n });\n };\n} // eslint-disable-next-line import/no-unused-modules\n\n\nexport default {\n name: 'applyStyles',\n enabled: true,\n phase: 'write',\n fn: applyStyles,\n effect: effect,\n requires: ['computeStyles']\n};","import getBasePlacement from \"../utils/getBasePlacement.js\";\nimport getLayoutRect from \"../dom-utils/getLayoutRect.js\";\nimport contains from \"../dom-utils/contains.js\";\nimport getOffsetParent from \"../dom-utils/getOffsetParent.js\";\nimport getMainAxisFromPlacement from \"../utils/getMainAxisFromPlacement.js\";\nimport { within } from \"../utils/within.js\";\nimport mergePaddingObject from \"../utils/mergePaddingObject.js\";\nimport expandToHashMap from \"../utils/expandToHashMap.js\";\nimport { left, right, basePlacements, top, bottom } from \"../enums.js\"; // eslint-disable-next-line import/no-unused-modules\n\nvar toPaddingObject = function toPaddingObject(padding, state) {\n padding = typeof padding === 'function' ? padding(Object.assign({}, state.rects, {\n placement: state.placement\n })) : padding;\n return mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));\n};\n\nfunction arrow(_ref) {\n var _state$modifiersData$;\n\n var state = _ref.state,\n name = _ref.name,\n options = _ref.options;\n var arrowElement = state.elements.arrow;\n var popperOffsets = state.modifiersData.popperOffsets;\n var basePlacement = getBasePlacement(state.placement);\n var axis = getMainAxisFromPlacement(basePlacement);\n var isVertical = [left, right].indexOf(basePlacement) >= 0;\n var len = isVertical ? 'height' : 'width';\n\n if (!arrowElement || !popperOffsets) {\n return;\n }\n\n var paddingObject = toPaddingObject(options.padding, state);\n var arrowRect = getLayoutRect(arrowElement);\n var minProp = axis === 'y' ? top : left;\n var maxProp = axis === 'y' ? bottom : right;\n var endDiff = state.rects.reference[len] + state.rects.reference[axis] - popperOffsets[axis] - state.rects.popper[len];\n var startDiff = popperOffsets[axis] - state.rects.reference[axis];\n var arrowOffsetParent = getOffsetParent(arrowElement);\n var clientSize = arrowOffsetParent ? axis === 'y' ? arrowOffsetParent.clientHeight || 0 : arrowOffsetParent.clientWidth || 0 : 0;\n var centerToReference = endDiff / 2 - startDiff / 2; // Make sure the arrow doesn't overflow the popper if the center point is\n // outside of the popper bounds\n\n var min = paddingObject[minProp];\n var max = clientSize - arrowRect[len] - paddingObject[maxProp];\n var center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;\n var offset = within(min, center, max); // Prevents breaking syntax highlighting...\n\n var axisProp = axis;\n state.modifiersData[name] = (_state$modifiersData$ = {}, _state$modifiersData$[axisProp] = offset, _state$modifiersData$.centerOffset = offset - center, _state$modifiersData$);\n}\n\nfunction effect(_ref2) {\n var state = _ref2.state,\n options = _ref2.options;\n var _options$element = options.element,\n arrowElement = _options$element === void 0 ? '[data-popper-arrow]' : _options$element;\n\n if (arrowElement == null) {\n return;\n } // CSS selector\n\n\n if (typeof arrowElement === 'string') {\n arrowElement = state.elements.popper.querySelector(arrowElement);\n\n if (!arrowElement) {\n return;\n }\n }\n\n if (!contains(state.elements.popper, arrowElement)) {\n return;\n }\n\n state.elements.arrow = arrowElement;\n} // eslint-disable-next-line import/no-unused-modules\n\n\nexport default {\n name: 'arrow',\n enabled: true,\n phase: 'main',\n fn: arrow,\n effect: effect,\n requires: ['popperOffsets'],\n requiresIfExists: ['preventOverflow']\n};","import { top, left, right, bottom, end } from \"../enums.js\";\nimport getOffsetParent from \"../dom-utils/getOffsetParent.js\";\nimport getWindow from \"../dom-utils/getWindow.js\";\nimport getDocumentElement from \"../dom-utils/getDocumentElement.js\";\nimport getComputedStyle from \"../dom-utils/getComputedStyle.js\";\nimport getBasePlacement from \"../utils/getBasePlacement.js\";\nimport getVariation from \"../utils/getVariation.js\";\nimport { round } from \"../utils/math.js\"; // eslint-disable-next-line import/no-unused-modules\n\nvar unsetSides = {\n top: 'auto',\n right: 'auto',\n bottom: 'auto',\n left: 'auto'\n}; // Round the offsets to the nearest suitable subpixel based on the DPR.\n// Zooming can change the DPR, but it seems to report a value that will\n// cleanly divide the values into the appropriate subpixels.\n\nfunction roundOffsetsByDPR(_ref, win) {\n var x = _ref.x,\n y = _ref.y;\n var dpr = win.devicePixelRatio || 1;\n return {\n x: round(x * dpr) / dpr || 0,\n y: round(y * dpr) / dpr || 0\n };\n}\n\nexport function mapToStyles(_ref2) {\n var _Object$assign2;\n\n var popper = _ref2.popper,\n popperRect = _ref2.popperRect,\n placement = _ref2.placement,\n variation = _ref2.variation,\n offsets = _ref2.offsets,\n position = _ref2.position,\n gpuAcceleration = _ref2.gpuAcceleration,\n adaptive = _ref2.adaptive,\n roundOffsets = _ref2.roundOffsets,\n isFixed = _ref2.isFixed;\n var _offsets$x = offsets.x,\n x = _offsets$x === void 0 ? 0 : _offsets$x,\n _offsets$y = offsets.y,\n y = _offsets$y === void 0 ? 0 : _offsets$y;\n\n var _ref3 = typeof roundOffsets === 'function' ? roundOffsets({\n x: x,\n y: y\n }) : {\n x: x,\n y: y\n };\n\n x = _ref3.x;\n y = _ref3.y;\n var hasX = offsets.hasOwnProperty('x');\n var hasY = offsets.hasOwnProperty('y');\n var sideX = left;\n var sideY = top;\n var win = window;\n\n if (adaptive) {\n var offsetParent = getOffsetParent(popper);\n var heightProp = 'clientHeight';\n var widthProp = 'clientWidth';\n\n if (offsetParent === getWindow(popper)) {\n offsetParent = getDocumentElement(popper);\n\n if (getComputedStyle(offsetParent).position !== 'static' && position === 'absolute') {\n heightProp = 'scrollHeight';\n widthProp = 'scrollWidth';\n }\n } // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it\n\n\n offsetParent = offsetParent;\n\n if (placement === top || (placement === left || placement === right) && variation === end) {\n sideY = bottom;\n var offsetY = isFixed && offsetParent === win && win.visualViewport ? win.visualViewport.height : // $FlowFixMe[prop-missing]\n offsetParent[heightProp];\n y -= offsetY - popperRect.height;\n y *= gpuAcceleration ? 1 : -1;\n }\n\n if (placement === left || (placement === top || placement === bottom) && variation === end) {\n sideX = right;\n var offsetX = isFixed && offsetParent === win && win.visualViewport ? win.visualViewport.width : // $FlowFixMe[prop-missing]\n offsetParent[widthProp];\n x -= offsetX - popperRect.width;\n x *= gpuAcceleration ? 1 : -1;\n }\n }\n\n var commonStyles = Object.assign({\n position: position\n }, adaptive && unsetSides);\n\n var _ref4 = roundOffsets === true ? roundOffsetsByDPR({\n x: x,\n y: y\n }, getWindow(popper)) : {\n x: x,\n y: y\n };\n\n x = _ref4.x;\n y = _ref4.y;\n\n if (gpuAcceleration) {\n var _Object$assign;\n\n return Object.assign({}, commonStyles, (_Object$assign = {}, _Object$assign[sideY] = hasY ? '0' : '', _Object$assign[sideX] = hasX ? '0' : '', _Object$assign.transform = (win.devicePixelRatio || 1) <= 1 ? \"translate(\" + x + \"px, \" + y + \"px)\" : \"translate3d(\" + x + \"px, \" + y + \"px, 0)\", _Object$assign));\n }\n\n return Object.assign({}, commonStyles, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + \"px\" : '', _Object$assign2[sideX] = hasX ? x + \"px\" : '', _Object$assign2.transform = '', _Object$assign2));\n}\n\nfunction computeStyles(_ref5) {\n var state = _ref5.state,\n options = _ref5.options;\n var _options$gpuAccelerat = options.gpuAcceleration,\n gpuAcceleration = _options$gpuAccelerat === void 0 ? true : _options$gpuAccelerat,\n _options$adaptive = options.adaptive,\n adaptive = _options$adaptive === void 0 ? true : _options$adaptive,\n _options$roundOffsets = options.roundOffsets,\n roundOffsets = _options$roundOffsets === void 0 ? true : _options$roundOffsets;\n var commonStyles = {\n placement: getBasePlacement(state.placement),\n variation: getVariation(state.placement),\n popper: state.elements.popper,\n popperRect: state.rects.popper,\n gpuAcceleration: gpuAcceleration,\n isFixed: state.options.strategy === 'fixed'\n };\n\n if (state.modifiersData.popperOffsets != null) {\n state.styles.popper = Object.assign({}, state.styles.popper, mapToStyles(Object.assign({}, commonStyles, {\n offsets: state.modifiersData.popperOffsets,\n position: state.options.strategy,\n adaptive: adaptive,\n roundOffsets: roundOffsets\n })));\n }\n\n if (state.modifiersData.arrow != null) {\n state.styles.arrow = Object.assign({}, state.styles.arrow, mapToStyles(Object.assign({}, commonStyles, {\n offsets: state.modifiersData.arrow,\n position: 'absolute',\n adaptive: false,\n roundOffsets: roundOffsets\n })));\n }\n\n state.attributes.popper = Object.assign({}, state.attributes.popper, {\n 'data-popper-placement': state.placement\n });\n} // eslint-disable-next-line import/no-unused-modules\n\n\nexport default {\n name: 'computeStyles',\n enabled: true,\n phase: 'beforeWrite',\n fn: computeStyles,\n data: {}\n};","import getWindow from \"../dom-utils/getWindow.js\"; // eslint-disable-next-line import/no-unused-modules\n\nvar passive = {\n passive: true\n};\n\nfunction effect(_ref) {\n var state = _ref.state,\n instance = _ref.instance,\n options = _ref.options;\n var _options$scroll = options.scroll,\n scroll = _options$scroll === void 0 ? true : _options$scroll,\n _options$resize = options.resize,\n resize = _options$resize === void 0 ? true : _options$resize;\n var window = getWindow(state.elements.popper);\n var scrollParents = [].concat(state.scrollParents.reference, state.scrollParents.popper);\n\n if (scroll) {\n scrollParents.forEach(function (scrollParent) {\n scrollParent.addEventListener('scroll', instance.update, passive);\n });\n }\n\n if (resize) {\n window.addEventListener('resize', instance.update, passive);\n }\n\n return function () {\n if (scroll) {\n scrollParents.forEach(function (scrollParent) {\n scrollParent.removeEventListener('scroll', instance.update, passive);\n });\n }\n\n if (resize) {\n window.removeEventListener('resize', instance.update, passive);\n }\n };\n} // eslint-disable-next-line import/no-unused-modules\n\n\nexport default {\n name: 'eventListeners',\n enabled: true,\n phase: 'write',\n fn: function fn() {},\n effect: effect,\n data: {}\n};","import getOppositePlacement from \"../utils/getOppositePlacement.js\";\nimport getBasePlacement from \"../utils/getBasePlacement.js\";\nimport getOppositeVariationPlacement from \"../utils/getOppositeVariationPlacement.js\";\nimport detectOverflow from \"../utils/detectOverflow.js\";\nimport computeAutoPlacement from \"../utils/computeAutoPlacement.js\";\nimport { bottom, top, start, right, left, auto } from \"../enums.js\";\nimport getVariation from \"../utils/getVariation.js\"; // eslint-disable-next-line import/no-unused-modules\n\nfunction getExpandedFallbackPlacements(placement) {\n if (getBasePlacement(placement) === auto) {\n return [];\n }\n\n var oppositePlacement = getOppositePlacement(placement);\n return [getOppositeVariationPlacement(placement), oppositePlacement, getOppositeVariationPlacement(oppositePlacement)];\n}\n\nfunction flip(_ref) {\n var state = _ref.state,\n options = _ref.options,\n name = _ref.name;\n\n if (state.modifiersData[name]._skip) {\n return;\n }\n\n var _options$mainAxis = options.mainAxis,\n checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,\n _options$altAxis = options.altAxis,\n checkAltAxis = _options$altAxis === void 0 ? true : _options$altAxis,\n specifiedFallbackPlacements = options.fallbackPlacements,\n padding = options.padding,\n boundary = options.boundary,\n rootBoundary = options.rootBoundary,\n altBoundary = options.altBoundary,\n _options$flipVariatio = options.flipVariations,\n flipVariations = _options$flipVariatio === void 0 ? true : _options$flipVariatio,\n allowedAutoPlacements = options.allowedAutoPlacements;\n var preferredPlacement = state.options.placement;\n var basePlacement = getBasePlacement(preferredPlacement);\n var isBasePlacement = basePlacement === preferredPlacement;\n var fallbackPlacements = specifiedFallbackPlacements || (isBasePlacement || !flipVariations ? [getOppositePlacement(preferredPlacement)] : getExpandedFallbackPlacements(preferredPlacement));\n var placements = [preferredPlacement].concat(fallbackPlacements).reduce(function (acc, placement) {\n return acc.concat(getBasePlacement(placement) === auto ? computeAutoPlacement(state, {\n placement: placement,\n boundary: boundary,\n rootBoundary: rootBoundary,\n padding: padding,\n flipVariations: flipVariations,\n allowedAutoPlacements: allowedAutoPlacements\n }) : placement);\n }, []);\n var referenceRect = state.rects.reference;\n var popperRect = state.rects.popper;\n var checksMap = new Map();\n var makeFallbackChecks = true;\n var firstFittingPlacement = placements[0];\n\n for (var i = 0; i < placements.length; i++) {\n var placement = placements[i];\n\n var _basePlacement = getBasePlacement(placement);\n\n var isStartVariation = getVariation(placement) === start;\n var isVertical = [top, bottom].indexOf(_basePlacement) >= 0;\n var len = isVertical ? 'width' : 'height';\n var overflow = detectOverflow(state, {\n placement: placement,\n boundary: boundary,\n rootBoundary: rootBoundary,\n altBoundary: altBoundary,\n padding: padding\n });\n var mainVariationSide = isVertical ? isStartVariation ? right : left : isStartVariation ? bottom : top;\n\n if (referenceRect[len] > popperRect[len]) {\n mainVariationSide = getOppositePlacement(mainVariationSide);\n }\n\n var altVariationSide = getOppositePlacement(mainVariationSide);\n var checks = [];\n\n if (checkMainAxis) {\n checks.push(overflow[_basePlacement] <= 0);\n }\n\n if (checkAltAxis) {\n checks.push(overflow[mainVariationSide] <= 0, overflow[altVariationSide] <= 0);\n }\n\n if (checks.every(function (check) {\n return check;\n })) {\n firstFittingPlacement = placement;\n makeFallbackChecks = false;\n break;\n }\n\n checksMap.set(placement, checks);\n }\n\n if (makeFallbackChecks) {\n // `2` may be desired in some cases â€“ research later\n var numberOfChecks = flipVariations ? 3 : 1;\n\n var _loop = function _loop(_i) {\n var fittingPlacement = placements.find(function (placement) {\n var checks = checksMap.get(placement);\n\n if (checks) {\n return checks.slice(0, _i).every(function (check) {\n return check;\n });\n }\n });\n\n if (fittingPlacement) {\n firstFittingPlacement = fittingPlacement;\n return \"break\";\n }\n };\n\n for (var _i = numberOfChecks; _i > 0; _i--) {\n var _ret = _loop(_i);\n\n if (_ret === \"break\") break;\n }\n }\n\n if (state.placement !== firstFittingPlacement) {\n state.modifiersData[name]._skip = true;\n state.placement = firstFittingPlacement;\n state.reset = true;\n }\n} // eslint-disable-next-line import/no-unused-modules\n\n\nexport default {\n name: 'flip',\n enabled: true,\n phase: 'main',\n fn: flip,\n requiresIfExists: ['offset'],\n data: {\n _skip: false\n }\n};","import getBasePlacement from \"../utils/getBasePlacement.js\";\nimport { top, left, right, placements } from \"../enums.js\"; // eslint-disable-next-line import/no-unused-modules\n\nexport function distanceAndSkiddingToXY(placement, rects, offset) {\n var basePlacement = getBasePlacement(placement);\n var invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;\n\n var _ref = typeof offset === 'function' ? offset(Object.assign({}, rects, {\n placement: placement\n })) : offset,\n skidding = _ref[0],\n distance = _ref[1];\n\n skidding = skidding || 0;\n distance = (distance || 0) * invertDistance;\n return [left, right].indexOf(basePlacement) >= 0 ? {\n x: distance,\n y: skidding\n } : {\n x: skidding,\n y: distance\n };\n}\n\nfunction offset(_ref2) {\n var state = _ref2.state,\n options = _ref2.options,\n name = _ref2.name;\n var _options$offset = options.offset,\n offset = _options$offset === void 0 ? [0, 0] : _options$offset;\n var data = placements.reduce(function (acc, placement) {\n acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);\n return acc;\n }, {});\n var _data$state$placement = data[state.placement],\n x = _data$state$placement.x,\n y = _data$state$placement.y;\n\n if (state.modifiersData.popperOffsets != null) {\n state.modifiersData.popperOffsets.x += x;\n state.modifiersData.popperOffsets.y += y;\n }\n\n state.modifiersData[name] = data;\n} // eslint-disable-next-line import/no-unused-modules\n\n\nexport default {\n name: 'offset',\n enabled: true,\n phase: 'main',\n requires: ['popperOffsets'],\n fn: offset\n};","import computeOffsets from \"../utils/computeOffsets.js\";\n\nfunction popperOffsets(_ref) {\n var state = _ref.state,\n name = _ref.name;\n // Offsets are the actual position the popper needs to have to be\n // properly positioned near its reference element\n // This is the most basic placement, and will be adjusted by\n // the modifiers in the next step\n state.modifiersData[name] = computeOffsets({\n reference: state.rects.reference,\n element: state.rects.popper,\n strategy: 'absolute',\n placement: state.placement\n });\n} // eslint-disable-next-line import/no-unused-modules\n\n\nexport default {\n name: 'popperOffsets',\n enabled: true,\n phase: 'read',\n fn: popperOffsets,\n data: {}\n};","import { top, left, right, bottom, start } from \"../enums.js\";\nimport getBasePlacement from \"../utils/getBasePlacement.js\";\nimport getMainAxisFromPlacement from \"../utils/getMainAxisFromPlacement.js\";\nimport getAltAxis from \"../utils/getAltAxis.js\";\nimport { within, withinMaxClamp } from \"../utils/within.js\";\nimport getLayoutRect from \"../dom-utils/getLayoutRect.js\";\nimport getOffsetParent from \"../dom-utils/getOffsetParent.js\";\nimport detectOverflow from \"../utils/detectOverflow.js\";\nimport getVariation from \"../utils/getVariation.js\";\nimport getFreshSideObject from \"../utils/getFreshSideObject.js\";\nimport { min as mathMin, max as mathMax } from \"../utils/math.js\";\n\nfunction preventOverflow(_ref) {\n var state = _ref.state,\n options = _ref.options,\n name = _ref.name;\n var _options$mainAxis = options.mainAxis,\n checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,\n _options$altAxis = options.altAxis,\n checkAltAxis = _options$altAxis === void 0 ? false : _options$altAxis,\n boundary = options.boundary,\n rootBoundary = options.rootBoundary,\n altBoundary = options.altBoundary,\n padding = options.padding,\n _options$tether = options.tether,\n tether = _options$tether === void 0 ? true : _options$tether,\n _options$tetherOffset = options.tetherOffset,\n tetherOffset = _options$tetherOffset === void 0 ? 0 : _options$tetherOffset;\n var overflow = detectOverflow(state, {\n boundary: boundary,\n rootBoundary: rootBoundary,\n padding: padding,\n altBoundary: altBoundary\n });\n var basePlacement = getBasePlacement(state.placement);\n var variation = getVariation(state.placement);\n var isBasePlacement = !variation;\n var mainAxis = getMainAxisFromPlacement(basePlacement);\n var altAxis = getAltAxis(mainAxis);\n var popperOffsets = state.modifiersData.popperOffsets;\n var referenceRect = state.rects.reference;\n var popperRect = state.rects.popper;\n var tetherOffsetValue = typeof tetherOffset === 'function' ? tetherOffset(Object.assign({}, state.rects, {\n placement: state.placement\n })) : tetherOffset;\n var normalizedTetherOffsetValue = typeof tetherOffsetValue === 'number' ? {\n mainAxis: tetherOffsetValue,\n altAxis: tetherOffsetValue\n } : Object.assign({\n mainAxis: 0,\n altAxis: 0\n }, tetherOffsetValue);\n var offsetModifierState = state.modifiersData.offset ? state.modifiersData.offset[state.placement] : null;\n var data = {\n x: 0,\n y: 0\n };\n\n if (!popperOffsets) {\n return;\n }\n\n if (checkMainAxis) {\n var _offsetModifierState$;\n\n var mainSide = mainAxis === 'y' ? top : left;\n var altSide = mainAxis === 'y' ? bottom : right;\n var len = mainAxis === 'y' ? 'height' : 'width';\n var offset = popperOffsets[mainAxis];\n var min = offset + overflow[mainSide];\n var max = offset - overflow[altSide];\n var additive = tether ? -popperRect[len] / 2 : 0;\n var minLen = variation === start ? referenceRect[len] : popperRect[len];\n var maxLen = variation === start ? -popperRect[len] : -referenceRect[len]; // We need to include the arrow in the calculation so the arrow doesn't go\n // outside the reference bounds\n\n var arrowElement = state.elements.arrow;\n var arrowRect = tether && arrowElement ? getLayoutRect(arrowElement) : {\n width: 0,\n height: 0\n };\n var arrowPaddingObject = state.modifiersData['arrow#persistent'] ? state.modifiersData['arrow#persistent'].padding : getFreshSideObject();\n var arrowPaddingMin = arrowPaddingObject[mainSide];\n var arrowPaddingMax = arrowPaddingObject[altSide]; // If the reference length is smaller than the arrow length, we don't want\n // to include its full size in the calculation. If the reference is small\n // and near the edge of a boundary, the popper can overflow even if the\n // reference is not overflowing as well (e.g. virtual elements with no\n // width or height)\n\n var arrowLen = within(0, referenceRect[len], arrowRect[len]);\n var minOffset = isBasePlacement ? referenceRect[len] / 2 - additive - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis : minLen - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis;\n var maxOffset = isBasePlacement ? -referenceRect[len] / 2 + additive + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis : maxLen + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis;\n var arrowOffsetParent = state.elements.arrow && getOffsetParent(state.elements.arrow);\n var clientOffset = arrowOffsetParent ? mainAxis === 'y' ? arrowOffsetParent.clientTop || 0 : arrowOffsetParent.clientLeft || 0 : 0;\n var offsetModifierValue = (_offsetModifierState$ = offsetModifierState == null ? void 0 : offsetModifierState[mainAxis]) != null ? _offsetModifierState$ : 0;\n var tetherMin = offset + minOffset - offsetModifierValue - clientOffset;\n var tetherMax = offset + maxOffset - offsetModifierValue;\n var preventedOffset = within(tether ? mathMin(min, tetherMin) : min, offset, tether ? mathMax(max, tetherMax) : max);\n popperOffsets[mainAxis] = preventedOffset;\n data[mainAxis] = preventedOffset - offset;\n }\n\n if (checkAltAxis) {\n var _offsetModifierState$2;\n\n var _mainSide = mainAxis === 'x' ? top : left;\n\n var _altSide = mainAxis === 'x' ? bottom : right;\n\n var _offset = popperOffsets[altAxis];\n\n var _len = altAxis === 'y' ? 'height' : 'width';\n\n var _min = _offset + overflow[_mainSide];\n\n var _max = _offset - overflow[_altSide];\n\n var isOriginSide = [top, left].indexOf(basePlacement) !== -1;\n\n var _offsetModifierValue = (_offsetModifierState$2 = offsetModifierState == null ? void 0 : offsetModifierState[altAxis]) != null ? _offsetModifierState$2 : 0;\n\n var _tetherMin = isOriginSide ? _min : _offset - referenceRect[_len] - popperRect[_len] - _offsetModifierValue + normalizedTetherOffsetValue.altAxis;\n\n var _tetherMax = isOriginSide ? _offset + referenceRect[_len] + popperRect[_len] - _offsetModifierValue - normalizedTetherOffsetValue.altAxis : _max;\n\n var _preventedOffset = tether && isOriginSide ? withinMaxClamp(_tetherMin, _offset, _tetherMax) : within(tether ? _tetherMin : _min, _offset, tether ? _tetherMax : _max);\n\n popperOffsets[altAxis] = _preventedOffset;\n data[altAxis] = _preventedOffset - _offset;\n }\n\n state.modifiersData[name] = data;\n} // eslint-disable-next-line import/no-unused-modules\n\n\nexport default {\n name: 'preventOverflow',\n enabled: true,\n phase: 'main',\n fn: preventOverflow,\n requiresIfExists: ['offset']\n};","import { popperGenerator, detectOverflow } from \"./createPopper.js\";\nimport eventListeners from \"./modifiers/eventListeners.js\";\nimport popperOffsets from \"./modifiers/popperOffsets.js\";\nimport computeStyles from \"./modifiers/computeStyles.js\";\nimport applyStyles from \"./modifiers/applyStyles.js\";\nvar defaultModifiers = [eventListeners, popperOffsets, computeStyles, applyStyles];\nvar createPopper = /*#__PURE__*/popperGenerator({\n defaultModifiers: defaultModifiers\n}); // eslint-disable-next-line import/no-unused-modules\n\nexport { createPopper, popperGenerator, defaultModifiers, detectOverflow };","import getVariation from \"./getVariation.js\";\nimport { variationPlacements, basePlacements, placements as allPlacements } from \"../enums.js\";\nimport detectOverflow from \"./detectOverflow.js\";\nimport getBasePlacement from \"./getBasePlacement.js\";\nexport default function computeAutoPlacement(state, options) {\n if (options === void 0) {\n options = {};\n }\n\n var _options = options,\n placement = _options.placement,\n boundary = _options.boundary,\n rootBoundary = _options.rootBoundary,\n padding = _options.padding,\n flipVariations = _options.flipVariations,\n _options$allowedAutoP = _options.allowedAutoPlacements,\n allowedAutoPlacements = _options$allowedAutoP === void 0 ? allPlacements : _options$allowedAutoP;\n var variation = getVariation(placement);\n var placements = variation ? flipVariations ? variationPlacements : variationPlacements.filter(function (placement) {\n return getVariation(placement) === variation;\n }) : basePlacements;\n var allowedPlacements = placements.filter(function (placement) {\n return allowedAutoPlacements.indexOf(placement) >= 0;\n });\n\n if (allowedPlacements.length === 0) {\n allowedPlacements = placements;\n } // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...\n\n\n var overflows = allowedPlacements.reduce(function (acc, placement) {\n acc[placement] = detectOverflow(state, {\n placement: placement,\n boundary: boundary,\n rootBoundary: rootBoundary,\n padding: padding\n })[getBasePlacement(placement)];\n return acc;\n }, {});\n return Object.keys(overflows).sort(function (a, b) {\n return overflows[a] - overflows[b];\n });\n}","import getBasePlacement from \"./getBasePlacement.js\";\nimport getVariation from \"./getVariation.js\";\nimport getMainAxisFromPlacement from \"./getMainAxisFromPlacement.js\";\nimport { top, right, bottom, left, start, end } from \"../enums.js\";\nexport default function computeOffsets(_ref) {\n var reference = _ref.reference,\n element = _ref.element,\n placement = _ref.placement;\n var basePlacement = placement ? getBasePlacement(placement) : null;\n var variation = placement ? getVariation(placement) : null;\n var commonX = reference.x + reference.width / 2 - element.width / 2;\n var commonY = reference.y + reference.height / 2 - element.height / 2;\n var offsets;\n\n switch (basePlacement) {\n case top:\n offsets = {\n x: commonX,\n y: reference.y - element.height\n };\n break;\n\n case bottom:\n offsets = {\n x: commonX,\n y: reference.y + reference.height\n };\n break;\n\n case right:\n offsets = {\n x: reference.x + reference.width,\n y: commonY\n };\n break;\n\n case left:\n offsets = {\n x: reference.x - element.width,\n y: commonY\n };\n break;\n\n default:\n offsets = {\n x: reference.x,\n y: reference.y\n };\n }\n\n var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;\n\n if (mainAxis != null) {\n var len = mainAxis === 'y' ? 'height' : 'width';\n\n switch (variation) {\n case start:\n offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);\n break;\n\n case end:\n offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);\n break;\n\n default:\n }\n }\n\n return offsets;\n}","export default function debounce(fn) {\n var pending;\n return function () {\n if (!pending) {\n pending = new Promise(function (resolve) {\n Promise.resolve().then(function () {\n pending = undefined;\n resolve(fn());\n });\n });\n }\n\n return pending;\n };\n}","import getClippingRect from \"../dom-utils/getClippingRect.js\";\nimport getDocumentElement from \"../dom-utils/getDocumentElement.js\";\nimport getBoundingClientRect from \"../dom-utils/getBoundingClientRect.js\";\nimport computeOffsets from \"./computeOffsets.js\";\nimport rectToClientRect from \"./rectToClientRect.js\";\nimport { clippingParents, reference, popper, bottom, top, right, basePlacements, viewport } from \"../enums.js\";\nimport { isElement } from \"../dom-utils/instanceOf.js\";\nimport mergePaddingObject from \"./mergePaddingObject.js\";\nimport expandToHashMap from \"./expandToHashMap.js\"; // eslint-disable-next-line import/no-unused-modules\n\nexport default function detectOverflow(state, options) {\n if (options === void 0) {\n options = {};\n }\n\n var _options = options,\n _options$placement = _options.placement,\n placement = _options$placement === void 0 ? state.placement : _options$placement,\n _options$strategy = _options.strategy,\n strategy = _options$strategy === void 0 ? state.strategy : _options$strategy,\n _options$boundary = _options.boundary,\n boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,\n _options$rootBoundary = _options.rootBoundary,\n rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,\n _options$elementConte = _options.elementContext,\n elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,\n _options$altBoundary = _options.altBoundary,\n altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,\n _options$padding = _options.padding,\n padding = _options$padding === void 0 ? 0 : _options$padding;\n var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));\n var altContext = elementContext === popper ? reference : popper;\n var popperRect = state.rects.popper;\n var element = state.elements[altBoundary ? altContext : elementContext];\n var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary, strategy);\n var referenceClientRect = getBoundingClientRect(state.elements.reference);\n var popperOffsets = computeOffsets({\n reference: referenceClientRect,\n element: popperRect,\n strategy: 'absolute',\n placement: placement\n });\n var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));\n var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect\n // 0 or negative = within the clipping rect\n\n var overflowOffsets = {\n top: clippingClientRect.top - elementClientRect.top + paddingObject.top,\n bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,\n left: clippingClientRect.left - elementClientRect.left + paddingObject.left,\n right: elementClientRect.right - clippingClientRect.right + paddingObject.right\n };\n var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element\n\n if (elementContext === popper && offsetData) {\n var offset = offsetData[placement];\n Object.keys(overflowOffsets).forEach(function (key) {\n var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;\n var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';\n overflowOffsets[key] += offset[axis] * multiply;\n });\n }\n\n return overflowOffsets;\n}","export default function expandToHashMap(value, keys) {\n return keys.reduce(function (hashMap, key) {\n hashMap[key] = value;\n return hashMap;\n }, {});\n}","export default function getAltAxis(axis) {\n return axis === 'x' ? 'y' : 'x';\n}","import { auto } from \"../enums.js\";\nexport default function getBasePlacement(placement) {\n return placement.split('-')[0];\n}","export default function getFreshSideObject() {\n return {\n top: 0,\n right: 0,\n bottom: 0,\n left: 0\n };\n}","export default function getMainAxisFromPlacement(placement) {\n return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';\n}","var hash = {\n left: 'right',\n right: 'left',\n bottom: 'top',\n top: 'bottom'\n};\nexport default function getOppositePlacement(placement) {\n return placement.replace(/left|right|bottom|top/g, function (matched) {\n return hash[matched];\n });\n}","var hash = {\n start: 'end',\n end: 'start'\n};\nexport default function getOppositeVariationPlacement(placement) {\n return placement.replace(/start|end/g, function (matched) {\n return hash[matched];\n });\n}","export default function getVariation(placement) {\n return placement.split('-')[1];\n}","export var max = Math.max;\nexport var min = Math.min;\nexport var round = Math.round;","export default function mergeByName(modifiers) {\n var merged = modifiers.reduce(function (merged, current) {\n var existing = merged[current.name];\n merged[current.name] = existing ? Object.assign({}, existing, current, {\n options: Object.assign({}, existing.options, current.options),\n data: Object.assign({}, existing.data, current.data)\n }) : current;\n return merged;\n }, {}); // IE11 does not support Object.values\n\n return Object.keys(merged).map(function (key) {\n return merged[key];\n });\n}","import getFreshSideObject from \"./getFreshSideObject.js\";\nexport default function mergePaddingObject(paddingObject) {\n return Object.assign({}, getFreshSideObject(), paddingObject);\n}","import { modifierPhases } from \"../enums.js\"; // source: https://stackoverflow.com/questions/49875255\n\nfunction order(modifiers) {\n var map = new Map();\n var visited = new Set();\n var result = [];\n modifiers.forEach(function (modifier) {\n map.set(modifier.name, modifier);\n }); // On visiting object, check for its dependencies and visit them recursively\n\n function sort(modifier) {\n visited.add(modifier.name);\n var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);\n requires.forEach(function (dep) {\n if (!visited.has(dep)) {\n var depModifier = map.get(dep);\n\n if (depModifier) {\n sort(depModifier);\n }\n }\n });\n result.push(modifier);\n }\n\n modifiers.forEach(function (modifier) {\n if (!visited.has(modifier.name)) {\n // check for visited object\n sort(modifier);\n }\n });\n return result;\n}\n\nexport default function orderModifiers(modifiers) {\n // order based on dependencies\n var orderedModifiers = order(modifiers); // order based on phase\n\n return modifierPhases.reduce(function (acc, phase) {\n return acc.concat(orderedModifiers.filter(function (modifier) {\n return modifier.phase === phase;\n }));\n }, []);\n}","export default function rectToClientRect(rect) {\n return Object.assign({}, rect, {\n left: rect.x,\n top: rect.y,\n right: rect.x + rect.width,\n bottom: rect.y + rect.height\n });\n}","export default function getUAString() {\n var uaData = navigator.userAgentData;\n\n if (uaData != null && uaData.brands && Array.isArray(uaData.brands)) {\n return uaData.brands.map(function (item) {\n return item.brand + \"/\" + item.version;\n }).join(' ');\n }\n\n return navigator.userAgent;\n}","import { max as mathMax, min as mathMin } from \"./math.js\";\nexport function within(min, value, max) {\n return mathMax(min, mathMin(value, max));\n}\nexport function withinMaxClamp(min, value, max) {\n var v = within(min, value, max);\n return v > max ? max : v;\n}","\"use strict\";\n\n/*\n MIT License http://www.opensource.org/licenses/mit-license.php\n Author Tobias Koppers @sokra\n*/\nmodule.exports = function (cssWithMappingToString) {\n var list = [];\n\n // return the list of modules as css string\n list.toString = function toString() {\n return this.map(function (item) {\n var content = \"\";\n var needLayer = typeof item[5] !== \"undefined\";\n if (item[4]) {\n content += \"@supports (\".concat(item[4], \") {\");\n }\n if (item[2]) {\n content += \"@media \".concat(item[2], \" {\");\n }\n if (needLayer) {\n content += \"@layer\".concat(item[5].length > 0 ? \" \".concat(item[5]) : \"\", \" {\");\n }\n content += cssWithMappingToString(item);\n if (needLayer) {\n content += \"}\";\n }\n if (item[2]) {\n content += \"}\";\n }\n if (item[4]) {\n content += \"}\";\n }\n return content;\n }).join(\"\");\n };\n\n // import a list of modules into the list\n list.i = function i(modules, media, dedupe, supports, layer) {\n if (typeof modules === \"string\") {\n modules = [[null, modules, undefined]];\n }\n var alreadyImportedModules = {};\n if (dedupe) {\n for (var k = 0; k < this.length; k++) {\n var id = this[k][0];\n if (id != null) {\n alreadyImportedModules[id] = true;\n }\n }\n }\n for (var _k = 0; _k < modules.length; _k++) {\n var item = [].concat(modules[_k]);\n if (dedupe && alreadyImportedModules[item[0]]) {\n continue;\n }\n if (typeof layer !== \"undefined\") {\n if (typeof item[5] === \"undefined\") {\n item[5] = layer;\n } else {\n item[1] = \"@layer\".concat(item[5].length > 0 ? \" \".concat(item[5]) : \"\", \" {\").concat(item[1], \"}\");\n item[5] = layer;\n }\n }\n if (media) {\n if (!item[2]) {\n item[2] = media;\n } else {\n item[1] = \"@media \".concat(item[2], \" {\").concat(item[1], \"}\");\n item[2] = media;\n }\n }\n if (supports) {\n if (!item[4]) {\n item[4] = \"\".concat(supports);\n } else {\n item[1] = \"@supports (\".concat(item[4], \") {\").concat(item[1], \"}\");\n item[4] = supports;\n }\n }\n list.push(item);\n }\n };\n return list;\n};","\"use strict\";\n\nmodule.exports = function (item) {\n var content = item[1];\n var cssMapping = item[3];\n if (!cssMapping) {\n return content;\n }\n if (typeof btoa === \"function\") {\n var base64 = btoa(unescape(encodeURIComponent(JSON.stringify(cssMapping))));\n var data = \"sourceMappingURL=data:application/json;charset=utf-8;base64,\".concat(base64);\n var sourceMapping = \"/*# \".concat(data, \" */\");\n return [content].concat([sourceMapping]).join(\"\\n\");\n }\n return [content].join(\"\\n\");\n};","if (typeof Object.create === 'function') {\n // implementation from standard node.js 'util' module\n module.exports = function inherits(ctor, superCtor) {\n if (superCtor) {\n ctor.super_ = superCtor\n ctor.prototype = Object.create(superCtor.prototype, {\n constructor: {\n value: ctor,\n enumerable: false,\n writable: true,\n configurable: true\n }\n })\n }\n };\n} else {\n // old school shim for old browsers\n module.exports = function inherits(ctor, superCtor) {\n if (superCtor) {\n ctor.super_ = superCtor\n var TempCtor = function () {}\n TempCtor.prototype = superCtor.prototype\n ctor.prototype = new TempCtor()\n ctor.prototype.constructor = ctor\n }\n }\n}\n","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar w = d * 7;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n * - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} [options]\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function(val, options) {\n options = options || {};\n var type = typeof val;\n if (type === 'string' && val.length > 0) {\n return parse(val);\n } else if (type === 'number' && isFinite(val)) {\n return options.long ? fmtLong(val) : fmtShort(val);\n }\n throw new Error(\n 'val is not a non-empty string or a valid number. val=' +\n JSON.stringify(val)\n );\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n str = String(str);\n if (str.length > 100) {\n return;\n }\n var match = /^(-?(?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(\n str\n );\n if (!match) {\n return;\n }\n var n = parseFloat(match[1]);\n var type = (match[2] || 'ms').toLowerCase();\n switch (type) {\n case 'years':\n case 'year':\n case 'yrs':\n case 'yr':\n case 'y':\n return n * y;\n case 'weeks':\n case 'week':\n case 'w':\n return n * w;\n case 'days':\n case 'day':\n case 'd':\n return n * d;\n case 'hours':\n case 'hour':\n case 'hrs':\n case 'hr':\n case 'h':\n return n * h;\n case 'minutes':\n case 'minute':\n case 'mins':\n case 'min':\n case 'm':\n return n * m;\n case 'seconds':\n case 'second':\n case 'secs':\n case 'sec':\n case 's':\n return n * s;\n case 'milliseconds':\n case 'millisecond':\n case 'msecs':\n case 'msec':\n case 'ms':\n return n;\n default:\n return undefined;\n }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n var msAbs = Math.abs(ms);\n if (msAbs >= d) {\n return Math.round(ms / d) + 'd';\n }\n if (msAbs >= h) {\n return Math.round(ms / h) + 'h';\n }\n if (msAbs >= m) {\n return Math.round(ms / m) + 'm';\n }\n if (msAbs >= s) {\n return Math.round(ms / s) + 's';\n }\n return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n var msAbs = Math.abs(ms);\n if (msAbs >= d) {\n return plural(ms, msAbs, d, 'day');\n }\n if (msAbs >= h) {\n return plural(ms, msAbs, h, 'hour');\n }\n if (msAbs >= m) {\n return plural(ms, msAbs, m, 'minute');\n }\n if (msAbs >= s) {\n return plural(ms, msAbs, s, 'second');\n }\n return ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, msAbs, n, name) {\n var isPlural = msAbs >= n * 1.5;\n return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');\n}\n","'use strict';\n\nvar has = Object.prototype.hasOwnProperty\n , undef;\n\n/**\n * Decode a URI encoded string.\n *\n * @param {String} input The URI encoded string.\n * @returns {String|Null} The decoded string.\n * @api private\n */\nfunction decode(input) {\n try {\n return decodeURIComponent(input.replace(/\\+/g, ' '));\n } catch (e) {\n return null;\n }\n}\n\n/**\n * Attempts to encode a given input.\n *\n * @param {String} input The string that needs to be encoded.\n * @returns {String|Null} The encoded string.\n * @api private\n */\nfunction encode(input) {\n try {\n return encodeURIComponent(input);\n } catch (e) {\n return null;\n }\n}\n\n/**\n * Simple query string parser.\n *\n * @param {String} query The query string that needs to be parsed.\n * @returns {Object}\n * @api public\n */\nfunction querystring(query) {\n var parser = /([^=?#&]+)=?([^&]*)/g\n , result = {}\n , part;\n\n while (part = parser.exec(query)) {\n var key = decode(part[1])\n , value = decode(part[2]);\n\n //\n // Prevent overriding of existing properties. This ensures that build-in\n // methods like `toString` or __proto__ are not overriden by malicious\n // querystrings.\n //\n // In the case if failed decoding, we want to omit the key/value pairs\n // from the result.\n //\n if (key === null || value === null || key in result) continue;\n result[key] = value;\n }\n\n return result;\n}\n\n/**\n * Transform a query string to an object.\n *\n * @param {Object} obj Object that should be transformed.\n * @param {String} prefix Optional prefix.\n * @returns {String}\n * @api public\n */\nfunction querystringify(obj, prefix) {\n prefix = prefix || '';\n\n var pairs = []\n , value\n , key;\n\n //\n // Optionally prefix with a '?' if needed\n //\n if ('string' !== typeof prefix) prefix = '?';\n\n for (key in obj) {\n if (has.call(obj, key)) {\n value = obj[key];\n\n //\n // Edge cases where we actually want to encode the value to an empty\n // string instead of the stringified value.\n //\n if (!value && (value === null || value === undef || isNaN(value))) {\n value = '';\n }\n\n key = encode(key);\n value = encode(value);\n\n //\n // If we failed to encode the strings, we should bail out as we don't\n // want to add invalid strings to the query.\n //\n if (key === null || value === null) continue;\n pairs.push(key +'='+ value);\n }\n }\n\n return pairs.length ? prefix + pairs.join('&') : '';\n}\n\n//\n// Expose the module.\n//\nexports.stringify = querystringify;\nexports.parse = querystring;\n","'use strict';\n\n/**\n * Check if we're required to add a port number.\n *\n * @see https://url.spec.whatwg.org/#default-port\n * @param {Number|String} port Port number we need to check\n * @param {String} protocol Protocol we need to check against.\n * @returns {Boolean} Is it a default port for the given protocol\n * @api private\n */\nmodule.exports = function required(port, protocol) {\n protocol = protocol.split(':')[0];\n port = +port;\n\n if (!port) return false;\n\n switch (protocol) {\n case 'http':\n case 'ws':\n return port !== 80;\n\n case 'https':\n case 'wss':\n return port !== 443;\n\n case 'ftp':\n return port !== 21;\n\n case 'gopher':\n return port !== 70;\n\n case 'file':\n return false;\n }\n\n return port !== 0;\n};\n","import { Subject } from './Subject';\nexport class BehaviorSubject extends Subject {\n constructor(_value) {\n super();\n this._value = _value;\n }\n get value() {\n return this.getValue();\n }\n _subscribe(subscriber) {\n const subscription = super._subscribe(subscriber);\n !subscription.closed && subscriber.next(this._value);\n return subscription;\n }\n getValue() {\n const { hasError, thrownError, _value } = this;\n if (hasError) {\n throw thrownError;\n }\n this._throwIfClosed();\n return _value;\n }\n next(value) {\n super.next((this._value = value));\n }\n}\n","export const COMPLETE_NOTIFICATION = (() => createNotification('C', undefined, undefined))();\nexport function errorNotification(error) {\n return createNotification('E', undefined, error);\n}\nexport function nextNotification(value) {\n return createNotification('N', value, undefined);\n}\nexport function createNotification(kind, value, error) {\n return {\n kind,\n value,\n error,\n };\n}\n","import { SafeSubscriber, Subscriber } from './Subscriber';\nimport { isSubscription } from './Subscription';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nimport { isFunction } from './util/isFunction';\nimport { errorContext } from './util/errorContext';\nexport class Observable {\n constructor(subscribe) {\n if (subscribe) {\n this._subscribe = subscribe;\n }\n }\n lift(operator) {\n const observable = new Observable();\n observable.source = this;\n observable.operator = operator;\n return observable;\n }\n subscribe(observerOrNext, error, complete) {\n const subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);\n errorContext(() => {\n const { operator, source } = this;\n subscriber.add(operator\n ?\n operator.call(subscriber, source)\n : source\n ?\n this._subscribe(subscriber)\n :\n this._trySubscribe(subscriber));\n });\n return subscriber;\n }\n _trySubscribe(sink) {\n try {\n return this._subscribe(sink);\n }\n catch (err) {\n sink.error(err);\n }\n }\n forEach(next, promiseCtor) {\n promiseCtor = getPromiseCtor(promiseCtor);\n return new promiseCtor((resolve, reject) => {\n const subscriber = new SafeSubscriber({\n next: (value) => {\n try {\n next(value);\n }\n catch (err) {\n reject(err);\n subscriber.unsubscribe();\n }\n },\n error: reject,\n complete: resolve,\n });\n this.subscribe(subscriber);\n });\n }\n _subscribe(subscriber) {\n var _a;\n return (_a = this.source) === null || _a === void 0 ? void 0 : _a.subscribe(subscriber);\n }\n [Symbol_observable]() {\n return this;\n }\n pipe(...operations) {\n return pipeFromArray(operations)(this);\n }\n toPromise(promiseCtor) {\n promiseCtor = getPromiseCtor(promiseCtor);\n return new promiseCtor((resolve, reject) => {\n let value;\n this.subscribe((x) => (value = x), (err) => reject(err), () => resolve(value));\n });\n }\n}\nObservable.create = (subscribe) => {\n return new Observable(subscribe);\n};\nfunction getPromiseCtor(promiseCtor) {\n var _a;\n return (_a = promiseCtor !== null && promiseCtor !== void 0 ? promiseCtor : config.Promise) !== null && _a !== void 0 ? _a : Promise;\n}\nfunction isObserver(value) {\n return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);\n}\nfunction isSubscriber(value) {\n return (value && value instanceof Subscriber) || (isObserver(value) && isSubscription(value));\n}\n","import { Subject } from './Subject';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\nexport class ReplaySubject extends Subject {\n constructor(_bufferSize = Infinity, _windowTime = Infinity, _timestampProvider = dateTimestampProvider) {\n super();\n this._bufferSize = _bufferSize;\n this._windowTime = _windowTime;\n this._timestampProvider = _timestampProvider;\n this._buffer = [];\n this._infiniteTimeWindow = true;\n this._infiniteTimeWindow = _windowTime === Infinity;\n this._bufferSize = Math.max(1, _bufferSize);\n this._windowTime = Math.max(1, _windowTime);\n }\n next(value) {\n const { isStopped, _buffer, _infiniteTimeWindow, _timestampProvider, _windowTime } = this;\n if (!isStopped) {\n _buffer.push(value);\n !_infiniteTimeWindow && _buffer.push(_timestampProvider.now() + _windowTime);\n }\n this._trimBuffer();\n super.next(value);\n }\n _subscribe(subscriber) {\n this._throwIfClosed();\n this._trimBuffer();\n const subscription = this._innerSubscribe(subscriber);\n const { _infiniteTimeWindow, _buffer } = this;\n const copy = _buffer.slice();\n for (let i = 0; i < copy.length && !subscriber.closed; i += _infiniteTimeWindow ? 1 : 2) {\n subscriber.next(copy[i]);\n }\n this._checkFinalizedStatuses(subscriber);\n return subscription;\n }\n _trimBuffer() {\n const { _bufferSize, _timestampProvider, _buffer, _infiniteTimeWindow } = this;\n const adjustedBufferSize = (_infiniteTimeWindow ? 1 : 2) * _bufferSize;\n _bufferSize < Infinity && adjustedBufferSize < _buffer.length && _buffer.splice(0, _buffer.length - adjustedBufferSize);\n if (!_infiniteTimeWindow) {\n const now = _timestampProvider.now();\n let last = 0;\n for (let i = 1; i < _buffer.length && _buffer[i] <= now; i += 2) {\n last = i;\n }\n last && _buffer.splice(0, last + 1);\n }\n }\n}\n","import { dateTimestampProvider } from './scheduler/dateTimestampProvider';\nexport class Scheduler {\n constructor(schedulerActionCtor, now = Scheduler.now) {\n this.schedulerActionCtor = schedulerActionCtor;\n this.now = now;\n }\n schedule(work, delay = 0, state) {\n return new this.schedulerActionCtor(this, work).schedule(state, delay);\n }\n}\nScheduler.now = dateTimestampProvider.now;\n","import { Observable } from './Observable';\nimport { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { arrRemove } from './util/arrRemove';\nimport { errorContext } from './util/errorContext';\nexport class Subject extends Observable {\n constructor() {\n super();\n this.closed = false;\n this.currentObservers = null;\n this.observers = [];\n this.isStopped = false;\n this.hasError = false;\n this.thrownError = null;\n }\n lift(operator) {\n const subject = new AnonymousSubject(this, this);\n subject.operator = operator;\n return subject;\n }\n _throwIfClosed() {\n if (this.closed) {\n throw new ObjectUnsubscribedError();\n }\n }\n next(value) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n if (!this.currentObservers) {\n this.currentObservers = Array.from(this.observers);\n }\n for (const observer of this.currentObservers) {\n observer.next(value);\n }\n }\n });\n }\n error(err) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.hasError = this.isStopped = true;\n this.thrownError = err;\n const { observers } = this;\n while (observers.length) {\n observers.shift().error(err);\n }\n }\n });\n }\n complete() {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.isStopped = true;\n const { observers } = this;\n while (observers.length) {\n observers.shift().complete();\n }\n }\n });\n }\n unsubscribe() {\n this.isStopped = this.closed = true;\n this.observers = this.currentObservers = null;\n }\n get observed() {\n var _a;\n return ((_a = this.observers) === null || _a === void 0 ? void 0 : _a.length) > 0;\n }\n _trySubscribe(subscriber) {\n this._throwIfClosed();\n return super._trySubscribe(subscriber);\n }\n _subscribe(subscriber) {\n this._throwIfClosed();\n this._checkFinalizedStatuses(subscriber);\n return this._innerSubscribe(subscriber);\n }\n _innerSubscribe(subscriber) {\n const { hasError, isStopped, observers } = this;\n if (hasError || isStopped) {\n return EMPTY_SUBSCRIPTION;\n }\n this.currentObservers = null;\n observers.push(subscriber);\n return new Subscription(() => {\n this.currentObservers = null;\n arrRemove(observers, subscriber);\n });\n }\n _checkFinalizedStatuses(subscriber) {\n const { hasError, thrownError, isStopped } = this;\n if (hasError) {\n subscriber.error(thrownError);\n }\n else if (isStopped) {\n subscriber.complete();\n }\n }\n asObservable() {\n const observable = new Observable();\n observable.source = this;\n return observable;\n }\n}\nSubject.create = (destination, source) => {\n return new AnonymousSubject(destination, source);\n};\nexport class AnonymousSubject extends Subject {\n constructor(destination, source) {\n super();\n this.destination = destination;\n this.source = source;\n }\n next(value) {\n var _a, _b;\n (_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.next) === null || _b === void 0 ? void 0 : _b.call(_a, value);\n }\n error(err) {\n var _a, _b;\n (_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.error) === null || _b === void 0 ? void 0 : _b.call(_a, err);\n }\n complete() {\n var _a, _b;\n (_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.complete) === null || _b === void 0 ? void 0 : _b.call(_a);\n }\n _subscribe(subscriber) {\n var _a, _b;\n return (_b = (_a = this.source) === null || _a === void 0 ? void 0 : _a.subscribe(subscriber)) !== null && _b !== void 0 ? _b : EMPTY_SUBSCRIPTION;\n }\n}\n","import { isFunction } from './util/isFunction';\nimport { isSubscription, Subscription } from './Subscription';\nimport { config } from './config';\nimport { reportUnhandledError } from './util/reportUnhandledError';\nimport { noop } from './util/noop';\nimport { nextNotification, errorNotification, COMPLETE_NOTIFICATION } from './NotificationFactories';\nimport { timeoutProvider } from './scheduler/timeoutProvider';\nimport { captureError } from './util/errorContext';\nexport class Subscriber extends Subscription {\n constructor(destination) {\n super();\n this.isStopped = false;\n if (destination) {\n this.destination = destination;\n if (isSubscription(destination)) {\n destination.add(this);\n }\n }\n else {\n this.destination = EMPTY_OBSERVER;\n }\n }\n static create(next, error, complete) {\n return new SafeSubscriber(next, error, complete);\n }\n next(value) {\n if (this.isStopped) {\n handleStoppedNotification(nextNotification(value), this);\n }\n else {\n this._next(value);\n }\n }\n error(err) {\n if (this.isStopped) {\n handleStoppedNotification(errorNotification(err), this);\n }\n else {\n this.isStopped = true;\n this._error(err);\n }\n }\n complete() {\n if (this.isStopped) {\n handleStoppedNotification(COMPLETE_NOTIFICATION, this);\n }\n else {\n this.isStopped = true;\n this._complete();\n }\n }\n unsubscribe() {\n if (!this.closed) {\n this.isStopped = true;\n super.unsubscribe();\n this.destination = null;\n }\n }\n _next(value) {\n this.destination.next(value);\n }\n _error(err) {\n try {\n this.destination.error(err);\n }\n finally {\n this.unsubscribe();\n }\n }\n _complete() {\n try {\n this.destination.complete();\n }\n finally {\n this.unsubscribe();\n }\n }\n}\nconst _bind = Function.prototype.bind;\nfunction bind(fn, thisArg) {\n return _bind.call(fn, thisArg);\n}\nclass ConsumerObserver {\n constructor(partialObserver) {\n this.partialObserver = partialObserver;\n }\n next(value) {\n const { partialObserver } = this;\n if (partialObserver.next) {\n try {\n partialObserver.next(value);\n }\n catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n error(err) {\n const { partialObserver } = this;\n if (partialObserver.error) {\n try {\n partialObserver.error(err);\n }\n catch (error) {\n handleUnhandledError(error);\n }\n }\n else {\n handleUnhandledError(err);\n }\n }\n complete() {\n const { partialObserver } = this;\n if (partialObserver.complete) {\n try {\n partialObserver.complete();\n }\n catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n}\nexport class SafeSubscriber extends Subscriber {\n constructor(observerOrNext, error, complete) {\n super();\n let partialObserver;\n if (isFunction(observerOrNext) || !observerOrNext) {\n partialObserver = {\n next: (observerOrNext !== null && observerOrNext !== void 0 ? observerOrNext : undefined),\n error: error !== null && error !== void 0 ? error : undefined,\n complete: complete !== null && complete !== void 0 ? complete : undefined,\n };\n }\n else {\n let context;\n if (this && config.useDeprecatedNextContext) {\n context = Object.create(observerOrNext);\n context.unsubscribe = () => this.unsubscribe();\n partialObserver = {\n next: observerOrNext.next && bind(observerOrNext.next, context),\n error: observerOrNext.error && bind(observerOrNext.error, context),\n complete: observerOrNext.complete && bind(observerOrNext.complete, context),\n };\n }\n else {\n partialObserver = observerOrNext;\n }\n }\n this.destination = new ConsumerObserver(partialObserver);\n }\n}\nfunction handleUnhandledError(error) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n captureError(error);\n }\n else {\n reportUnhandledError(error);\n }\n}\nfunction defaultErrorHandler(err) {\n throw err;\n}\nfunction handleStoppedNotification(notification, subscriber) {\n const { onStoppedNotification } = config;\n onStoppedNotification && timeoutProvider.setTimeout(() => onStoppedNotification(notification, subscriber));\n}\nexport const EMPTY_OBSERVER = {\n closed: true,\n next: noop,\n error: defaultErrorHandler,\n complete: noop,\n};\n","import { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nimport { arrRemove } from './util/arrRemove';\nexport class Subscription {\n constructor(initialTeardown) {\n this.initialTeardown = initialTeardown;\n this.closed = false;\n this._parentage = null;\n this._finalizers = null;\n }\n unsubscribe() {\n let errors;\n if (!this.closed) {\n this.closed = true;\n const { _parentage } = this;\n if (_parentage) {\n this._parentage = null;\n if (Array.isArray(_parentage)) {\n for (const parent of _parentage) {\n parent.remove(this);\n }\n }\n else {\n _parentage.remove(this);\n }\n }\n const { initialTeardown: initialFinalizer } = this;\n if (isFunction(initialFinalizer)) {\n try {\n initialFinalizer();\n }\n catch (e) {\n errors = e instanceof UnsubscriptionError ? e.errors : [e];\n }\n }\n const { _finalizers } = this;\n if (_finalizers) {\n this._finalizers = null;\n for (const finalizer of _finalizers) {\n try {\n execFinalizer(finalizer);\n }\n catch (err) {\n errors = errors !== null && errors !== void 0 ? errors : [];\n if (err instanceof UnsubscriptionError) {\n errors = [...errors, ...err.errors];\n }\n else {\n errors.push(err);\n }\n }\n }\n }\n if (errors) {\n throw new UnsubscriptionError(errors);\n }\n }\n }\n add(teardown) {\n var _a;\n if (teardown && teardown !== this) {\n if (this.closed) {\n execFinalizer(teardown);\n }\n else {\n if (teardown instanceof Subscription) {\n if (teardown.closed || teardown._hasParent(this)) {\n return;\n }\n teardown._addParent(this);\n }\n (this._finalizers = (_a = this._finalizers) !== null && _a !== void 0 ? _a : []).push(teardown);\n }\n }\n }\n _hasParent(parent) {\n const { _parentage } = this;\n return _parentage === parent || (Array.isArray(_parentage) && _parentage.includes(parent));\n }\n _addParent(parent) {\n const { _parentage } = this;\n this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;\n }\n _removeParent(parent) {\n const { _parentage } = this;\n if (_parentage === parent) {\n this._parentage = null;\n }\n else if (Array.isArray(_parentage)) {\n arrRemove(_parentage, parent);\n }\n }\n remove(teardown) {\n const { _finalizers } = this;\n _finalizers && arrRemove(_finalizers, teardown);\n if (teardown instanceof Subscription) {\n teardown._removeParent(this);\n }\n }\n}\nSubscription.EMPTY = (() => {\n const empty = new Subscription();\n empty.closed = true;\n return empty;\n})();\nexport const EMPTY_SUBSCRIPTION = Subscription.EMPTY;\nexport function isSubscription(value) {\n return (value instanceof Subscription ||\n (value && 'closed' in value && isFunction(value.remove) && isFunction(value.add) && isFunction(value.unsubscribe)));\n}\nfunction execFinalizer(finalizer) {\n if (isFunction(finalizer)) {\n finalizer();\n }\n else {\n finalizer.unsubscribe();\n }\n}\n","export const config = {\n onUnhandledError: null,\n onStoppedNotification: null,\n Promise: undefined,\n useDeprecatedSynchronousErrorHandling: false,\n useDeprecatedNextContext: false,\n};\n","import { EmptyError } from './util/EmptyError';\nimport { SafeSubscriber } from './Subscriber';\nexport function firstValueFrom(source, config) {\n const hasConfig = typeof config === 'object';\n return new Promise((resolve, reject) => {\n const subscriber = new SafeSubscriber({\n next: (value) => {\n resolve(value);\n subscriber.unsubscribe();\n },\n error: reject,\n complete: () => {\n if (hasConfig) {\n resolve(config.defaultValue);\n }\n else {\n reject(new EmptyError());\n }\n },\n });\n source.subscribe(subscriber);\n });\n}\n","import { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nimport { refCount as higherOrderRefCount } from '../operators/refCount';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { hasLift } from '../util/lift';\nexport class ConnectableObservable extends Observable {\n constructor(source, subjectFactory) {\n super();\n this.source = source;\n this.subjectFactory = subjectFactory;\n this._subject = null;\n this._refCount = 0;\n this._connection = null;\n if (hasLift(source)) {\n this.lift = source.lift;\n }\n }\n _subscribe(subscriber) {\n return this.getSubject().subscribe(subscriber);\n }\n getSubject() {\n const subject = this._subject;\n if (!subject || subject.isStopped) {\n this._subject = this.subjectFactory();\n }\n return this._subject;\n }\n _teardown() {\n this._refCount = 0;\n const { _connection } = this;\n this._subject = this._connection = null;\n _connection === null || _connection === void 0 ? void 0 : _connection.unsubscribe();\n }\n connect() {\n let connection = this._connection;\n if (!connection) {\n connection = this._connection = new Subscription();\n const subject = this.getSubject();\n connection.add(this.source.subscribe(createOperatorSubscriber(subject, undefined, () => {\n this._teardown();\n subject.complete();\n }, (err) => {\n this._teardown();\n subject.error(err);\n }, () => this._teardown())));\n if (connection.closed) {\n this._connection = null;\n connection = Subscription.EMPTY;\n }\n }\n return connection;\n }\n refCount() {\n return higherOrderRefCount()(this);\n }\n}\n","import { Observable } from '../Observable';\nimport { argsArgArrayOrObject } from '../util/argsArgArrayOrObject';\nimport { from } from './from';\nimport { identity } from '../util/identity';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nimport { popResultSelector, popScheduler } from '../util/args';\nimport { createObject } from '../util/createObject';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { executeSchedule } from '../util/executeSchedule';\nexport function combineLatest(...args) {\n const scheduler = popScheduler(args);\n const resultSelector = popResultSelector(args);\n const { args: observables, keys } = argsArgArrayOrObject(args);\n if (observables.length === 0) {\n return from([], scheduler);\n }\n const result = new Observable(combineLatestInit(observables, scheduler, keys\n ?\n (values) => createObject(keys, values)\n :\n identity));\n return resultSelector ? result.pipe(mapOneOrManyArgs(resultSelector)) : result;\n}\nexport function combineLatestInit(observables, scheduler, valueTransform = identity) {\n return (subscriber) => {\n maybeSchedule(scheduler, () => {\n const { length } = observables;\n const values = new Array(length);\n let active = length;\n let remainingFirstValues = length;\n for (let i = 0; i < length; i++) {\n maybeSchedule(scheduler, () => {\n const source = from(observables[i], scheduler);\n let hasFirstValue = false;\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n values[i] = value;\n if (!hasFirstValue) {\n hasFirstValue = true;\n remainingFirstValues--;\n }\n if (!remainingFirstValues) {\n subscriber.next(valueTransform(values.slice()));\n }\n }, () => {\n if (!--active) {\n subscriber.complete();\n }\n }));\n }, subscriber);\n }\n }, subscriber);\n };\n}\nfunction maybeSchedule(scheduler, execute, subscription) {\n if (scheduler) {\n executeSchedule(subscription, scheduler, execute);\n }\n else {\n execute();\n }\n}\n","import { concatAll } from '../operators/concatAll';\nimport { popScheduler } from '../util/args';\nimport { from } from './from';\nexport function concat(...args) {\n return concatAll()(from(args, popScheduler(args)));\n}\n","import { Observable } from '../Observable';\nimport { innerFrom } from './innerFrom';\nexport function defer(observableFactory) {\n return new Observable((subscriber) => {\n innerFrom(observableFactory()).subscribe(subscriber);\n });\n}\n","import { Observable } from '../Observable';\nexport const EMPTY = new Observable((subscriber) => subscriber.complete());\nexport function empty(scheduler) {\n return scheduler ? emptyScheduled(scheduler) : EMPTY;\n}\nfunction emptyScheduled(scheduler) {\n return new Observable((subscriber) => scheduler.schedule(() => subscriber.complete()));\n}\n","import { Observable } from '../Observable';\nimport { argsArgArrayOrObject } from '../util/argsArgArrayOrObject';\nimport { innerFrom } from './innerFrom';\nimport { popResultSelector } from '../util/args';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nimport { createObject } from '../util/createObject';\nexport function forkJoin(...args) {\n const resultSelector = popResultSelector(args);\n const { args: sources, keys } = argsArgArrayOrObject(args);\n const result = new Observable((subscriber) => {\n const { length } = sources;\n if (!length) {\n subscriber.complete();\n return;\n }\n const values = new Array(length);\n let remainingCompletions = length;\n let remainingEmissions = length;\n for (let sourceIndex = 0; sourceIndex < length; sourceIndex++) {\n let hasValue = false;\n innerFrom(sources[sourceIndex]).subscribe(createOperatorSubscriber(subscriber, (value) => {\n if (!hasValue) {\n hasValue = true;\n remainingEmissions--;\n }\n values[sourceIndex] = value;\n }, () => remainingCompletions--, undefined, () => {\n if (!remainingCompletions || !hasValue) {\n if (!remainingEmissions) {\n subscriber.next(keys ? createObject(keys, values) : values);\n }\n subscriber.complete();\n }\n }));\n }\n });\n return resultSelector ? result.pipe(mapOneOrManyArgs(resultSelector)) : result;\n}\n","import { scheduled } from '../scheduled/scheduled';\nimport { innerFrom } from './innerFrom';\nexport function from(input, scheduler) {\n return scheduler ? scheduled(input, scheduler) : innerFrom(input);\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { Observable } from '../Observable';\nimport { mergeMap } from '../operators/mergeMap';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isFunction } from '../util/isFunction';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nconst nodeEventEmitterMethods = ['addListener', 'removeListener'];\nconst eventTargetMethods = ['addEventListener', 'removeEventListener'];\nconst jqueryMethods = ['on', 'off'];\nexport function fromEvent(target, eventName, options, resultSelector) {\n if (isFunction(options)) {\n resultSelector = options;\n options = undefined;\n }\n if (resultSelector) {\n return fromEvent(target, eventName, options).pipe(mapOneOrManyArgs(resultSelector));\n }\n const [add, remove] = isEventTarget(target)\n ? eventTargetMethods.map((methodName) => (handler) => target[methodName](eventName, handler, options))\n :\n isNodeStyleEventEmitter(target)\n ? nodeEventEmitterMethods.map(toCommonHandlerRegistry(target, eventName))\n : isJQueryStyleEventEmitter(target)\n ? jqueryMethods.map(toCommonHandlerRegistry(target, eventName))\n : [];\n if (!add) {\n if (isArrayLike(target)) {\n return mergeMap((subTarget) => fromEvent(subTarget, eventName, options))(innerFrom(target));\n }\n }\n if (!add) {\n throw new TypeError('Invalid event target');\n }\n return new Observable((subscriber) => {\n const handler = (...args) => subscriber.next(1 < args.length ? args : args[0]);\n add(handler);\n return () => remove(handler);\n });\n}\nfunction toCommonHandlerRegistry(target, eventName) {\n return (methodName) => (handler) => target[methodName](eventName, handler);\n}\nfunction isNodeStyleEventEmitter(target) {\n return isFunction(target.addListener) && isFunction(target.removeListener);\n}\nfunction isJQueryStyleEventEmitter(target) {\n return isFunction(target.on) && isFunction(target.off);\n}\nfunction isEventTarget(target) {\n return isFunction(target.addEventListener) && isFunction(target.removeEventListener);\n}\n","import { __asyncValues, __awaiter } from \"tslib\";\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isPromise } from '../util/isPromise';\nimport { Observable } from '../Observable';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isAsyncIterable } from '../util/isAsyncIterable';\nimport { createInvalidObservableTypeError } from '../util/throwUnobservableError';\nimport { isIterable } from '../util/isIterable';\nimport { isReadableStreamLike, readableStreamLikeToAsyncGenerator } from '../util/isReadableStreamLike';\nimport { isFunction } from '../util/isFunction';\nimport { reportUnhandledError } from '../util/reportUnhandledError';\nimport { observable as Symbol_observable } from '../symbol/observable';\nexport function innerFrom(input) {\n if (input instanceof Observable) {\n return input;\n }\n if (input != null) {\n if (isInteropObservable(input)) {\n return fromInteropObservable(input);\n }\n if (isArrayLike(input)) {\n return fromArrayLike(input);\n }\n if (isPromise(input)) {\n return fromPromise(input);\n }\n if (isAsyncIterable(input)) {\n return fromAsyncIterable(input);\n }\n if (isIterable(input)) {\n return fromIterable(input);\n }\n if (isReadableStreamLike(input)) {\n return fromReadableStreamLike(input);\n }\n }\n throw createInvalidObservableTypeError(input);\n}\nexport function fromInteropObservable(obj) {\n return new Observable((subscriber) => {\n const obs = obj[Symbol_observable]();\n if (isFunction(obs.subscribe)) {\n return obs.subscribe(subscriber);\n }\n throw new TypeError('Provided object does not correctly implement Symbol.observable');\n });\n}\nexport function fromArrayLike(array) {\n return new Observable((subscriber) => {\n for (let i = 0; i < array.length && !subscriber.closed; i++) {\n subscriber.next(array[i]);\n }\n subscriber.complete();\n });\n}\nexport function fromPromise(promise) {\n return new Observable((subscriber) => {\n promise\n .then((value) => {\n if (!subscriber.closed) {\n subscriber.next(value);\n subscriber.complete();\n }\n }, (err) => subscriber.error(err))\n .then(null, reportUnhandledError);\n });\n}\nexport function fromIterable(iterable) {\n return new Observable((subscriber) => {\n for (const value of iterable) {\n subscriber.next(value);\n if (subscriber.closed) {\n return;\n }\n }\n subscriber.complete();\n });\n}\nexport function fromAsyncIterable(asyncIterable) {\n return new Observable((subscriber) => {\n process(asyncIterable, subscriber).catch((err) => subscriber.error(err));\n });\n}\nexport function fromReadableStreamLike(readableStream) {\n return fromAsyncIterable(readableStreamLikeToAsyncGenerator(readableStream));\n}\nfunction process(asyncIterable, subscriber) {\n var asyncIterable_1, asyncIterable_1_1;\n var e_1, _a;\n return __awaiter(this, void 0, void 0, function* () {\n try {\n for (asyncIterable_1 = __asyncValues(asyncIterable); asyncIterable_1_1 = yield asyncIterable_1.next(), !asyncIterable_1_1.done;) {\n const value = asyncIterable_1_1.value;\n subscriber.next(value);\n if (subscriber.closed) {\n return;\n }\n }\n }\n catch (e_1_1) { e_1 = { error: e_1_1 }; }\n finally {\n try {\n if (asyncIterable_1_1 && !asyncIterable_1_1.done && (_a = asyncIterable_1.return)) yield _a.call(asyncIterable_1);\n }\n finally { if (e_1) throw e_1.error; }\n }\n subscriber.complete();\n });\n}\n","import { mergeAll } from '../operators/mergeAll';\nimport { innerFrom } from './innerFrom';\nimport { EMPTY } from './empty';\nimport { popNumber, popScheduler } from '../util/args';\nimport { from } from './from';\nexport function merge(...args) {\n const scheduler = popScheduler(args);\n const concurrent = popNumber(args, Infinity);\n const sources = args;\n return !sources.length\n ?\n EMPTY\n : sources.length === 1\n ?\n innerFrom(sources[0])\n :\n mergeAll(concurrent)(from(sources, scheduler));\n}\n","import { Observable } from '../Observable';\nimport { noop } from '../util/noop';\nexport const NEVER = new Observable(noop);\nexport function never() {\n return NEVER;\n}\n","import { popScheduler } from '../util/args';\nimport { from } from './from';\nexport function of(...args) {\n const scheduler = popScheduler(args);\n return from(args, scheduler);\n}\n","import { Observable } from '../Observable';\nimport { innerFrom } from './innerFrom';\nimport { argsOrArgArray } from '../util/argsOrArgArray';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nexport function race(...sources) {\n sources = argsOrArgArray(sources);\n return sources.length === 1 ? innerFrom(sources[0]) : new Observable(raceInit(sources));\n}\nexport function raceInit(sources) {\n return (subscriber) => {\n let subscriptions = [];\n for (let i = 0; subscriptions && !subscriber.closed && i < sources.length; i++) {\n subscriptions.push(innerFrom(sources[i]).subscribe(createOperatorSubscriber(subscriber, (value) => {\n if (subscriptions) {\n for (let s = 0; s < subscriptions.length; s++) {\n s !== i && subscriptions[s].unsubscribe();\n }\n subscriptions = null;\n }\n subscriber.next(value);\n })));\n }\n };\n}\n","import { Observable } from '../Observable';\nimport { isFunction } from '../util/isFunction';\nexport function throwError(errorOrErrorFactory, scheduler) {\n const errorFactory = isFunction(errorOrErrorFactory) ? errorOrErrorFactory : () => errorOrErrorFactory;\n const init = (subscriber) => subscriber.error(errorFactory());\n return new Observable(scheduler ? (subscriber) => scheduler.schedule(init, 0, subscriber) : init);\n}\n","import { Observable } from '../Observable';\nimport { async as asyncScheduler } from '../scheduler/async';\nimport { isScheduler } from '../util/isScheduler';\nimport { isValidDate } from '../util/isDate';\nexport function timer(dueTime = 0, intervalOrScheduler, scheduler = asyncScheduler) {\n let intervalDuration = -1;\n if (intervalOrScheduler != null) {\n if (isScheduler(intervalOrScheduler)) {\n scheduler = intervalOrScheduler;\n }\n else {\n intervalDuration = intervalOrScheduler;\n }\n }\n return new Observable((subscriber) => {\n let due = isValidDate(dueTime) ? +dueTime - scheduler.now() : dueTime;\n if (due < 0) {\n due = 0;\n }\n let n = 0;\n return scheduler.schedule(function () {\n if (!subscriber.closed) {\n subscriber.next(n++);\n if (0 <= intervalDuration) {\n this.schedule(undefined, intervalDuration);\n }\n else {\n subscriber.complete();\n }\n }\n }, due);\n });\n}\n","import { Observable } from '../Observable';\nimport { innerFrom } from './innerFrom';\nimport { argsOrArgArray } from '../util/argsOrArgArray';\nimport { EMPTY } from './empty';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { popResultSelector } from '../util/args';\nexport function zip(...args) {\n const resultSelector = popResultSelector(args);\n const sources = argsOrArgArray(args);\n return sources.length\n ? new Observable((subscriber) => {\n let buffers = sources.map(() => []);\n let completed = sources.map(() => false);\n subscriber.add(() => {\n buffers = completed = null;\n });\n for (let sourceIndex = 0; !subscriber.closed && sourceIndex < sources.length; sourceIndex++) {\n innerFrom(sources[sourceIndex]).subscribe(createOperatorSubscriber(subscriber, (value) => {\n buffers[sourceIndex].push(value);\n if (buffers.every((buffer) => buffer.length)) {\n const result = buffers.map((buffer) => buffer.shift());\n subscriber.next(resultSelector ? resultSelector(...result) : result);\n if (buffers.some((buffer, i) => !buffer.length && completed[i])) {\n subscriber.complete();\n }\n }\n }, () => {\n completed[sourceIndex] = true;\n !buffers[sourceIndex].length && subscriber.complete();\n }));\n }\n return () => {\n buffers = completed = null;\n };\n })\n : EMPTY;\n}\n","import { Subscriber } from '../Subscriber';\nexport function createOperatorSubscriber(destination, onNext, onComplete, onError, onFinalize) {\n return new OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize);\n}\nexport class OperatorSubscriber extends Subscriber {\n constructor(destination, onNext, onComplete, onError, onFinalize, shouldUnsubscribe) {\n super(destination);\n this.onFinalize = onFinalize;\n this.shouldUnsubscribe = shouldUnsubscribe;\n this._next = onNext\n ? function (value) {\n try {\n onNext(value);\n }\n catch (err) {\n destination.error(err);\n }\n }\n : super._next;\n this._error = onError\n ? function (err) {\n try {\n onError(err);\n }\n catch (err) {\n destination.error(err);\n }\n finally {\n this.unsubscribe();\n }\n }\n : super._error;\n this._complete = onComplete\n ? function () {\n try {\n onComplete();\n }\n catch (err) {\n destination.error(err);\n }\n finally {\n this.unsubscribe();\n }\n }\n : super._complete;\n }\n unsubscribe() {\n var _a;\n if (!this.shouldUnsubscribe || this.shouldUnsubscribe()) {\n const { closed } = this;\n super.unsubscribe();\n !closed && ((_a = this.onFinalize) === null || _a === void 0 ? void 0 : _a.call(this));\n }\n }\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { operate } from '../util/lift';\nexport function catchError(selector) {\n return operate((source, subscriber) => {\n let innerSub = null;\n let syncUnsub = false;\n let handledResult;\n innerSub = source.subscribe(createOperatorSubscriber(subscriber, undefined, undefined, (err) => {\n handledResult = innerFrom(selector(err, catchError(selector)(source)));\n if (innerSub) {\n innerSub.unsubscribe();\n innerSub = null;\n handledResult.subscribe(subscriber);\n }\n else {\n syncUnsub = true;\n }\n }));\n if (syncUnsub) {\n innerSub.unsubscribe();\n innerSub = null;\n handledResult.subscribe(subscriber);\n }\n });\n}\n","import { mergeAll } from './mergeAll';\nexport function concatAll() {\n return mergeAll(1);\n}\n","import { mergeMap } from './mergeMap';\nimport { isFunction } from '../util/isFunction';\nexport function concatMap(project, resultSelector) {\n return isFunction(resultSelector) ? mergeMap(project, resultSelector, 1) : mergeMap(project, 1);\n}\n","import { asyncScheduler } from '../scheduler/async';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function debounceTime(dueTime, scheduler = asyncScheduler) {\n return operate((source, subscriber) => {\n let activeTask = null;\n let lastValue = null;\n let lastTime = null;\n const emit = () => {\n if (activeTask) {\n activeTask.unsubscribe();\n activeTask = null;\n const value = lastValue;\n lastValue = null;\n subscriber.next(value);\n }\n };\n function emitWhenIdle() {\n const targetTime = lastTime + dueTime;\n const now = scheduler.now();\n if (now < targetTime) {\n activeTask = this.schedule(undefined, targetTime - now);\n subscriber.add(activeTask);\n return;\n }\n emit();\n }\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n lastValue = value;\n lastTime = scheduler.now();\n if (!activeTask) {\n activeTask = scheduler.schedule(emitWhenIdle, dueTime);\n subscriber.add(activeTask);\n }\n }, () => {\n emit();\n subscriber.complete();\n }, undefined, () => {\n lastValue = activeTask = null;\n }));\n });\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function defaultIfEmpty(defaultValue) {\n return operate((source, subscriber) => {\n let hasValue = false;\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n hasValue = true;\n subscriber.next(value);\n }, () => {\n if (!hasValue) {\n subscriber.next(defaultValue);\n }\n subscriber.complete();\n }));\n });\n}\n","import { asyncScheduler } from '../scheduler/async';\nimport { delayWhen } from './delayWhen';\nimport { timer } from '../observable/timer';\nexport function delay(due, scheduler = asyncScheduler) {\n const duration = timer(due, scheduler);\n return delayWhen(() => duration);\n}\n","import { concat } from '../observable/concat';\nimport { take } from './take';\nimport { ignoreElements } from './ignoreElements';\nimport { mapTo } from './mapTo';\nimport { mergeMap } from './mergeMap';\nimport { innerFrom } from '../observable/innerFrom';\nexport function delayWhen(delayDurationSelector, subscriptionDelay) {\n if (subscriptionDelay) {\n return (source) => concat(subscriptionDelay.pipe(take(1), ignoreElements()), source.pipe(delayWhen(delayDurationSelector)));\n }\n return mergeMap((value, index) => innerFrom(delayDurationSelector(value, index)).pipe(take(1), mapTo(value)));\n}\n","import { identity } from '../util/identity';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function distinctUntilChanged(comparator, keySelector = identity) {\n comparator = comparator !== null && comparator !== void 0 ? comparator : defaultCompare;\n return operate((source, subscriber) => {\n let previousKey;\n let first = true;\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n const currentKey = keySelector(value);\n if (first || !comparator(previousKey, currentKey)) {\n first = false;\n previousKey = currentKey;\n subscriber.next(value);\n }\n }));\n });\n}\nfunction defaultCompare(a, b) {\n return a === b;\n}\n","import { concat } from '../observable/concat';\nimport { of } from '../observable/of';\nexport function endWith(...values) {\n return (source) => concat(source, of(...values));\n}\n","import { operate } from '../util/lift';\nimport { mergeInternals } from './mergeInternals';\nexport function expand(project, concurrent = Infinity, scheduler) {\n concurrent = (concurrent || 0) < 1 ? Infinity : concurrent;\n return operate((source, subscriber) => mergeInternals(source, subscriber, project, concurrent, undefined, true, scheduler));\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function filter(predicate, thisArg) {\n return operate((source, subscriber) => {\n let index = 0;\n source.subscribe(createOperatorSubscriber(subscriber, (value) => predicate.call(thisArg, value, index++) && subscriber.next(value)));\n });\n}\n","import { operate } from '../util/lift';\nexport function finalize(callback) {\n return operate((source, subscriber) => {\n try {\n source.subscribe(subscriber);\n }\n finally {\n subscriber.add(callback);\n }\n });\n}\n","import { EmptyError } from '../util/EmptyError';\nimport { filter } from './filter';\nimport { take } from './take';\nimport { defaultIfEmpty } from './defaultIfEmpty';\nimport { throwIfEmpty } from './throwIfEmpty';\nimport { identity } from '../util/identity';\nexport function first(predicate, defaultValue) {\n const hasDefaultValue = arguments.length >= 2;\n return (source) => source.pipe(predicate ? filter((v, i) => predicate(v, i, source)) : identity, take(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(() => new EmptyError()));\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { noop } from '../util/noop';\nexport function ignoreElements() {\n return operate((source, subscriber) => {\n source.subscribe(createOperatorSubscriber(subscriber, noop));\n });\n}\n","import { EmptyError } from '../util/EmptyError';\nimport { filter } from './filter';\nimport { takeLast } from './takeLast';\nimport { throwIfEmpty } from './throwIfEmpty';\nimport { defaultIfEmpty } from './defaultIfEmpty';\nimport { identity } from '../util/identity';\nexport function last(predicate, defaultValue) {\n const hasDefaultValue = arguments.length >= 2;\n return (source) => source.pipe(predicate ? filter((v, i) => predicate(v, i, source)) : identity, takeLast(1), hasDefaultValue ? defaultIfEmpty(defaultValue) : throwIfEmpty(() => new EmptyError()));\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function map(project, thisArg) {\n return operate((source, subscriber) => {\n let index = 0;\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n subscriber.next(project.call(thisArg, value, index++));\n }));\n });\n}\n","import { map } from './map';\nexport function mapTo(value) {\n return map(() => value);\n}\n","import { mergeMap } from './mergeMap';\nimport { identity } from '../util/identity';\nexport function mergeAll(concurrent = Infinity) {\n return mergeMap(identity, concurrent);\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { executeSchedule } from '../util/executeSchedule';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function mergeInternals(source, subscriber, project, concurrent, onBeforeNext, expand, innerSubScheduler, additionalFinalizer) {\n const buffer = [];\n let active = 0;\n let index = 0;\n let isComplete = false;\n const checkComplete = () => {\n if (isComplete && !buffer.length && !active) {\n subscriber.complete();\n }\n };\n const outerNext = (value) => (active < concurrent ? doInnerSub(value) : buffer.push(value));\n const doInnerSub = (value) => {\n expand && subscriber.next(value);\n active++;\n let innerComplete = false;\n innerFrom(project(value, index++)).subscribe(createOperatorSubscriber(subscriber, (innerValue) => {\n onBeforeNext === null || onBeforeNext === void 0 ? void 0 : onBeforeNext(innerValue);\n if (expand) {\n outerNext(innerValue);\n }\n else {\n subscriber.next(innerValue);\n }\n }, () => {\n innerComplete = true;\n }, undefined, () => {\n if (innerComplete) {\n try {\n active--;\n while (buffer.length && active < concurrent) {\n const bufferedValue = buffer.shift();\n if (innerSubScheduler) {\n executeSchedule(subscriber, innerSubScheduler, () => doInnerSub(bufferedValue));\n }\n else {\n doInnerSub(bufferedValue);\n }\n }\n checkComplete();\n }\n catch (err) {\n subscriber.error(err);\n }\n }\n }));\n };\n source.subscribe(createOperatorSubscriber(subscriber, outerNext, () => {\n isComplete = true;\n checkComplete();\n }));\n return () => {\n additionalFinalizer === null || additionalFinalizer === void 0 ? void 0 : additionalFinalizer();\n };\n}\n","import { map } from './map';\nimport { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { mergeInternals } from './mergeInternals';\nimport { isFunction } from '../util/isFunction';\nexport function mergeMap(project, resultSelector, concurrent = Infinity) {\n if (isFunction(resultSelector)) {\n return mergeMap((a, i) => map((b, ii) => resultSelector(a, b, i, ii))(innerFrom(project(a, i))), concurrent);\n }\n else if (typeof resultSelector === 'number') {\n concurrent = resultSelector;\n }\n return operate((source, subscriber) => mergeInternals(source, subscriber, project, concurrent));\n}\n","import { executeSchedule } from '../util/executeSchedule';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function observeOn(scheduler, delay = 0) {\n return operate((source, subscriber) => {\n source.subscribe(createOperatorSubscriber(subscriber, (value) => executeSchedule(subscriber, scheduler, () => subscriber.next(value), delay), () => executeSchedule(subscriber, scheduler, () => subscriber.complete(), delay), (err) => executeSchedule(subscriber, scheduler, () => subscriber.error(err), delay)));\n });\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function refCount() {\n return operate((source, subscriber) => {\n let connection = null;\n source._refCount++;\n const refCounter = createOperatorSubscriber(subscriber, undefined, undefined, undefined, () => {\n if (!source || source._refCount <= 0 || 0 < --source._refCount) {\n connection = null;\n return;\n }\n const sharedConnection = source._connection;\n const conn = connection;\n connection = null;\n if (sharedConnection && (!conn || sharedConnection === conn)) {\n sharedConnection.unsubscribe();\n }\n subscriber.unsubscribe();\n });\n source.subscribe(refCounter);\n if (!refCounter.closed) {\n connection = source.connect();\n }\n });\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { identity } from '../util/identity';\nimport { timer } from '../observable/timer';\nimport { innerFrom } from '../observable/innerFrom';\nexport function retry(configOrCount = Infinity) {\n let config;\n if (configOrCount && typeof configOrCount === 'object') {\n config = configOrCount;\n }\n else {\n config = {\n count: configOrCount,\n };\n }\n const { count = Infinity, delay, resetOnSuccess: resetOnSuccess = false } = config;\n return count <= 0\n ? identity\n : operate((source, subscriber) => {\n let soFar = 0;\n let innerSub;\n const subscribeForRetry = () => {\n let syncUnsub = false;\n innerSub = source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n if (resetOnSuccess) {\n soFar = 0;\n }\n subscriber.next(value);\n }, undefined, (err) => {\n if (soFar++ < count) {\n const resub = () => {\n if (innerSub) {\n innerSub.unsubscribe();\n innerSub = null;\n subscribeForRetry();\n }\n else {\n syncUnsub = true;\n }\n };\n if (delay != null) {\n const notifier = typeof delay === 'number' ? timer(delay) : innerFrom(delay(err, soFar));\n const notifierSubscriber = createOperatorSubscriber(subscriber, () => {\n notifierSubscriber.unsubscribe();\n resub();\n }, () => {\n subscriber.complete();\n });\n notifier.subscribe(notifierSubscriber);\n }\n else {\n resub();\n }\n }\n else {\n subscriber.error(err);\n }\n }));\n if (syncUnsub) {\n innerSub.unsubscribe();\n innerSub = null;\n subscribeForRetry();\n }\n };\n subscribeForRetry();\n });\n}\n","import { operate } from '../util/lift';\nimport { scanInternals } from './scanInternals';\nexport function scan(accumulator, seed) {\n return operate(scanInternals(accumulator, seed, arguments.length >= 2, true));\n}\n","import { createOperatorSubscriber } from './OperatorSubscriber';\nexport function scanInternals(accumulator, seed, hasSeed, emitOnNext, emitBeforeComplete) {\n return (source, subscriber) => {\n let hasState = hasSeed;\n let state = seed;\n let index = 0;\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n const i = index++;\n state = hasState\n ?\n accumulator(state, value, i)\n :\n ((hasState = true), value);\n emitOnNext && subscriber.next(state);\n }, emitBeforeComplete &&\n (() => {\n hasState && subscriber.next(state);\n subscriber.complete();\n })));\n };\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { Subject } from '../Subject';\nimport { SafeSubscriber } from '../Subscriber';\nimport { operate } from '../util/lift';\nexport function share(options = {}) {\n const { connector = () => new Subject(), resetOnError = true, resetOnComplete = true, resetOnRefCountZero = true } = options;\n return (wrapperSource) => {\n let connection;\n let resetConnection;\n let subject;\n let refCount = 0;\n let hasCompleted = false;\n let hasErrored = false;\n const cancelReset = () => {\n resetConnection === null || resetConnection === void 0 ? void 0 : resetConnection.unsubscribe();\n resetConnection = undefined;\n };\n const reset = () => {\n cancelReset();\n connection = subject = undefined;\n hasCompleted = hasErrored = false;\n };\n const resetAndUnsubscribe = () => {\n const conn = connection;\n reset();\n conn === null || conn === void 0 ? void 0 : conn.unsubscribe();\n };\n return operate((source, subscriber) => {\n refCount++;\n if (!hasErrored && !hasCompleted) {\n cancelReset();\n }\n const dest = (subject = subject !== null && subject !== void 0 ? subject : connector());\n subscriber.add(() => {\n refCount--;\n if (refCount === 0 && !hasErrored && !hasCompleted) {\n resetConnection = handleReset(resetAndUnsubscribe, resetOnRefCountZero);\n }\n });\n dest.subscribe(subscriber);\n if (!connection &&\n refCount > 0) {\n connection = new SafeSubscriber({\n next: (value) => dest.next(value),\n error: (err) => {\n hasErrored = true;\n cancelReset();\n resetConnection = handleReset(reset, resetOnError, err);\n dest.error(err);\n },\n complete: () => {\n hasCompleted = true;\n cancelReset();\n resetConnection = handleReset(reset, resetOnComplete);\n dest.complete();\n },\n });\n innerFrom(source).subscribe(connection);\n }\n })(wrapperSource);\n };\n}\nfunction handleReset(reset, on, ...args) {\n if (on === true) {\n reset();\n return;\n }\n if (on === false) {\n return;\n }\n const onSubscriber = new SafeSubscriber({\n next: () => {\n onSubscriber.unsubscribe();\n reset();\n },\n });\n return innerFrom(on(...args)).subscribe(onSubscriber);\n}\n","import { filter } from './filter';\nexport function skip(count) {\n return filter((_, index) => count <= index);\n}\n","import { concat } from '../observable/concat';\nimport { popScheduler } from '../util/args';\nimport { operate } from '../util/lift';\nexport function startWith(...values) {\n const scheduler = popScheduler(values);\n return operate((source, subscriber) => {\n (scheduler ? concat(values, source, scheduler) : concat(values, source)).subscribe(subscriber);\n });\n}\n","import { operate } from '../util/lift';\nexport function subscribeOn(scheduler, delay = 0) {\n return operate((source, subscriber) => {\n subscriber.add(scheduler.schedule(() => source.subscribe(subscriber), delay));\n });\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function switchMap(project, resultSelector) {\n return operate((source, subscriber) => {\n let innerSubscriber = null;\n let index = 0;\n let isComplete = false;\n const checkComplete = () => isComplete && !innerSubscriber && subscriber.complete();\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n innerSubscriber === null || innerSubscriber === void 0 ? void 0 : innerSubscriber.unsubscribe();\n let innerIndex = 0;\n const outerIndex = index++;\n innerFrom(project(value, outerIndex)).subscribe((innerSubscriber = createOperatorSubscriber(subscriber, (innerValue) => subscriber.next(resultSelector ? resultSelector(value, innerValue, outerIndex, innerIndex++) : innerValue), () => {\n innerSubscriber = null;\n checkComplete();\n })));\n }, () => {\n isComplete = true;\n checkComplete();\n }));\n });\n}\n","import { EMPTY } from '../observable/empty';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function take(count) {\n return count <= 0\n ?\n () => EMPTY\n : operate((source, subscriber) => {\n let seen = 0;\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n if (++seen <= count) {\n subscriber.next(value);\n if (count <= seen) {\n subscriber.complete();\n }\n }\n }));\n });\n}\n","import { EMPTY } from '../observable/empty';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function takeLast(count) {\n return count <= 0\n ? () => EMPTY\n : operate((source, subscriber) => {\n let buffer = [];\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n buffer.push(value);\n count < buffer.length && buffer.shift();\n }, () => {\n for (const value of buffer) {\n subscriber.next(value);\n }\n subscriber.complete();\n }, undefined, () => {\n buffer = null;\n }));\n });\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { noop } from '../util/noop';\nexport function takeUntil(notifier) {\n return operate((source, subscriber) => {\n innerFrom(notifier).subscribe(createOperatorSubscriber(subscriber, () => subscriber.complete(), noop));\n !subscriber.closed && source.subscribe(subscriber);\n });\n}\n","import { isFunction } from '../util/isFunction';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { identity } from '../util/identity';\nexport function tap(observerOrNext, error, complete) {\n const tapObserver = isFunction(observerOrNext) || error || complete\n ?\n { next: observerOrNext, error, complete }\n : observerOrNext;\n return tapObserver\n ? operate((source, subscriber) => {\n var _a;\n (_a = tapObserver.subscribe) === null || _a === void 0 ? void 0 : _a.call(tapObserver);\n let isUnsub = true;\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n var _a;\n (_a = tapObserver.next) === null || _a === void 0 ? void 0 : _a.call(tapObserver, value);\n subscriber.next(value);\n }, () => {\n var _a;\n isUnsub = false;\n (_a = tapObserver.complete) === null || _a === void 0 ? void 0 : _a.call(tapObserver);\n subscriber.complete();\n }, (err) => {\n var _a;\n isUnsub = false;\n (_a = tapObserver.error) === null || _a === void 0 ? void 0 : _a.call(tapObserver, err);\n subscriber.error(err);\n }, () => {\n var _a, _b;\n if (isUnsub) {\n (_a = tapObserver.unsubscribe) === null || _a === void 0 ? void 0 : _a.call(tapObserver);\n }\n (_b = tapObserver.finalize) === null || _b === void 0 ? void 0 : _b.call(tapObserver);\n }));\n })\n :\n identity;\n}\n","import { EmptyError } from '../util/EmptyError';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function throwIfEmpty(errorFactory = defaultErrorFactory) {\n return operate((source, subscriber) => {\n let hasValue = false;\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n hasValue = true;\n subscriber.next(value);\n }, () => (hasValue ? subscriber.complete() : subscriber.error(errorFactory()))));\n });\n}\nfunction defaultErrorFactory() {\n return new EmptyError();\n}\n","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { identity } from '../util/identity';\nimport { noop } from '../util/noop';\nimport { popResultSelector } from '../util/args';\nexport function withLatestFrom(...inputs) {\n const project = popResultSelector(inputs);\n return operate((source, subscriber) => {\n const len = inputs.length;\n const otherValues = new Array(len);\n let hasValue = inputs.map(() => false);\n let ready = false;\n for (let i = 0; i < len; i++) {\n innerFrom(inputs[i]).subscribe(createOperatorSubscriber(subscriber, (value) => {\n otherValues[i] = value;\n if (!ready && !hasValue[i]) {\n hasValue[i] = true;\n (ready = hasValue.every(identity)) && (hasValue = null);\n }\n }, noop));\n }\n source.subscribe(createOperatorSubscriber(subscriber, (value) => {\n if (ready) {\n const values = [value, ...otherValues];\n subscriber.next(project ? project(...values) : values);\n }\n }));\n });\n}\n","import { Observable } from '../Observable';\nexport function scheduleArray(input, scheduler) {\n return new Observable((subscriber) => {\n let i = 0;\n return scheduler.schedule(function () {\n if (i === input.length) {\n subscriber.complete();\n }\n else {\n subscriber.next(input[i++]);\n if (!subscriber.closed) {\n this.schedule();\n }\n }\n });\n });\n}\n","import { Observable } from '../Observable';\nimport { executeSchedule } from '../util/executeSchedule';\nexport function scheduleAsyncIterable(input, scheduler) {\n if (!input) {\n throw new Error('Iterable cannot be null');\n }\n return new Observable((subscriber) => {\n executeSchedule(subscriber, scheduler, () => {\n const iterator = input[Symbol.asyncIterator]();\n executeSchedule(subscriber, scheduler, () => {\n iterator.next().then((result) => {\n if (result.done) {\n subscriber.complete();\n }\n else {\n subscriber.next(result.value);\n }\n });\n }, 0, true);\n });\n });\n}\n","import { Observable } from '../Observable';\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from '../util/isFunction';\nimport { executeSchedule } from '../util/executeSchedule';\nexport function scheduleIterable(input, scheduler) {\n return new Observable((subscriber) => {\n let iterator;\n executeSchedule(subscriber, scheduler, () => {\n iterator = input[Symbol_iterator]();\n executeSchedule(subscriber, scheduler, () => {\n let value;\n let done;\n try {\n ({ value, done } = iterator.next());\n }\n catch (err) {\n subscriber.error(err);\n return;\n }\n if (done) {\n subscriber.complete();\n }\n else {\n subscriber.next(value);\n }\n }, 0, true);\n });\n return () => isFunction(iterator === null || iterator === void 0 ? void 0 : iterator.return) && iterator.return();\n });\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { observeOn } from '../operators/observeOn';\nimport { subscribeOn } from '../operators/subscribeOn';\nexport function scheduleObservable(input, scheduler) {\n return innerFrom(input).pipe(subscribeOn(scheduler), observeOn(scheduler));\n}\n","import { innerFrom } from '../observable/innerFrom';\nimport { observeOn } from '../operators/observeOn';\nimport { subscribeOn } from '../operators/subscribeOn';\nexport function schedulePromise(input, scheduler) {\n return innerFrom(input).pipe(subscribeOn(scheduler), observeOn(scheduler));\n}\n","import { scheduleAsyncIterable } from './scheduleAsyncIterable';\nimport { readableStreamLikeToAsyncGenerator } from '../util/isReadableStreamLike';\nexport function scheduleReadableStreamLike(input, scheduler) {\n return scheduleAsyncIterable(readableStreamLikeToAsyncGenerator(input), scheduler);\n}\n","import { scheduleObservable } from './scheduleObservable';\nimport { schedulePromise } from './schedulePromise';\nimport { scheduleArray } from './scheduleArray';\nimport { scheduleIterable } from './scheduleIterable';\nimport { scheduleAsyncIterable } from './scheduleAsyncIterable';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isPromise } from '../util/isPromise';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isIterable } from '../util/isIterable';\nimport { isAsyncIterable } from '../util/isAsyncIterable';\nimport { createInvalidObservableTypeError } from '../util/throwUnobservableError';\nimport { isReadableStreamLike } from '../util/isReadableStreamLike';\nimport { scheduleReadableStreamLike } from './scheduleReadableStreamLike';\nexport function scheduled(input, scheduler) {\n if (input != null) {\n if (isInteropObservable(input)) {\n return scheduleObservable(input, scheduler);\n }\n if (isArrayLike(input)) {\n return scheduleArray(input, scheduler);\n }\n if (isPromise(input)) {\n return schedulePromise(input, scheduler);\n }\n if (isAsyncIterable(input)) {\n return scheduleAsyncIterable(input, scheduler);\n }\n if (isIterable(input)) {\n return scheduleIterable(input, scheduler);\n }\n if (isReadableStreamLike(input)) {\n return scheduleReadableStreamLike(input, scheduler);\n }\n }\n throw createInvalidObservableTypeError(input);\n}\n","import { Subscription } from '../Subscription';\nexport class Action extends Subscription {\n constructor(scheduler, work) {\n super();\n }\n schedule(state, delay = 0) {\n return this;\n }\n}\n","import { Action } from './Action';\nimport { intervalProvider } from './intervalProvider';\nimport { arrRemove } from '../util/arrRemove';\nexport class AsyncAction extends Action {\n constructor(scheduler, work) {\n super(scheduler, work);\n this.scheduler = scheduler;\n this.work = work;\n this.pending = false;\n }\n schedule(state, delay = 0) {\n var _a;\n if (this.closed) {\n return this;\n }\n this.state = state;\n const id = this.id;\n const scheduler = this.scheduler;\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, delay);\n }\n this.pending = true;\n this.delay = delay;\n this.id = (_a = this.id) !== null && _a !== void 0 ? _a : this.requestAsyncId(scheduler, this.id, delay);\n return this;\n }\n requestAsyncId(scheduler, _id, delay = 0) {\n return intervalProvider.setInterval(scheduler.flush.bind(scheduler, this), delay);\n }\n recycleAsyncId(_scheduler, id, delay = 0) {\n if (delay != null && this.delay === delay && this.pending === false) {\n return id;\n }\n if (id != null) {\n intervalProvider.clearInterval(id);\n }\n return undefined;\n }\n execute(state, delay) {\n if (this.closed) {\n return new Error('executing a cancelled action');\n }\n this.pending = false;\n const error = this._execute(state, delay);\n if (error) {\n return error;\n }\n else if (this.pending === false && this.id != null) {\n this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n }\n }\n _execute(state, _delay) {\n let errored = false;\n let errorValue;\n try {\n this.work(state);\n }\n catch (e) {\n errored = true;\n errorValue = e ? e : new Error('Scheduled action threw falsy error');\n }\n if (errored) {\n this.unsubscribe();\n return errorValue;\n }\n }\n unsubscribe() {\n if (!this.closed) {\n const { id, scheduler } = this;\n const { actions } = scheduler;\n this.work = this.state = this.scheduler = null;\n this.pending = false;\n arrRemove(actions, this);\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, null);\n }\n this.delay = null;\n super.unsubscribe();\n }\n }\n}\n","import { Scheduler } from '../Scheduler';\nexport class AsyncScheduler extends Scheduler {\n constructor(SchedulerAction, now = Scheduler.now) {\n super(SchedulerAction, now);\n this.actions = [];\n this._active = false;\n }\n flush(action) {\n const { actions } = this;\n if (this._active) {\n actions.push(action);\n return;\n }\n let error;\n this._active = true;\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions.shift()));\n this._active = false;\n if (error) {\n while ((action = actions.shift())) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n","import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\nexport const asyncScheduler = new AsyncScheduler(AsyncAction);\nexport const async = asyncScheduler;\n","export const dateTimestampProvider = {\n now() {\n return (dateTimestampProvider.delegate || Date).now();\n },\n delegate: undefined,\n};\n","export const intervalProvider = {\n setInterval(handler, timeout, ...args) {\n const { delegate } = intervalProvider;\n if (delegate === null || delegate === void 0 ? void 0 : delegate.setInterval) {\n return delegate.setInterval(handler, timeout, ...args);\n }\n return setInterval(handler, timeout, ...args);\n },\n clearInterval(handle) {\n const { delegate } = intervalProvider;\n return ((delegate === null || delegate === void 0 ? void 0 : delegate.clearInterval) || clearInterval)(handle);\n },\n delegate: undefined,\n};\n","export const timeoutProvider = {\n setTimeout(handler, timeout, ...args) {\n const { delegate } = timeoutProvider;\n if (delegate === null || delegate === void 0 ? void 0 : delegate.setTimeout) {\n return delegate.setTimeout(handler, timeout, ...args);\n }\n return setTimeout(handler, timeout, ...args);\n },\n clearTimeout(handle) {\n const { delegate } = timeoutProvider;\n return ((delegate === null || delegate === void 0 ? void 0 : delegate.clearTimeout) || clearTimeout)(handle);\n },\n delegate: undefined,\n};\n","export function getSymbolIterator() {\n if (typeof Symbol !== 'function' || !Symbol.iterator) {\n return '@@iterator';\n }\n return Symbol.iterator;\n}\nexport const iterator = getSymbolIterator();\n","export const observable = (() => (typeof Symbol === 'function' && Symbol.observable) || '@@observable')();\n","import { createErrorClass } from './createErrorClass';\nexport const EmptyError = createErrorClass((_super) => function EmptyErrorImpl() {\n _super(this);\n this.name = 'EmptyError';\n this.message = 'no elements in sequence';\n});\n","import { createErrorClass } from './createErrorClass';\nexport const ObjectUnsubscribedError = createErrorClass((_super) => function ObjectUnsubscribedErrorImpl() {\n _super(this);\n this.name = 'ObjectUnsubscribedError';\n this.message = 'object unsubscribed';\n});\n","import { createErrorClass } from './createErrorClass';\nexport const UnsubscriptionError = createErrorClass((_super) => function UnsubscriptionErrorImpl(errors) {\n _super(this);\n this.message = errors\n ? `${errors.length} errors occurred during unsubscription:\n${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\\n ')}`\n : '';\n this.name = 'UnsubscriptionError';\n this.errors = errors;\n});\n","import { isFunction } from './isFunction';\nimport { isScheduler } from './isScheduler';\nfunction last(arr) {\n return arr[arr.length - 1];\n}\nexport function popResultSelector(args) {\n return isFunction(last(args)) ? args.pop() : undefined;\n}\nexport function popScheduler(args) {\n return isScheduler(last(args)) ? args.pop() : undefined;\n}\nexport function popNumber(args, defaultValue) {\n return typeof last(args) === 'number' ? args.pop() : defaultValue;\n}\n","const { isArray } = Array;\nconst { getPrototypeOf, prototype: objectProto, keys: getKeys } = Object;\nexport function argsArgArrayOrObject(args) {\n if (args.length === 1) {\n const first = args[0];\n if (isArray(first)) {\n return { args: first, keys: null };\n }\n if (isPOJO(first)) {\n const keys = getKeys(first);\n return {\n args: keys.map((key) => first[key]),\n keys,\n };\n }\n }\n return { args: args, keys: null };\n}\nfunction isPOJO(obj) {\n return obj && typeof obj === 'object' && getPrototypeOf(obj) === objectProto;\n}\n","const { isArray } = Array;\nexport function argsOrArgArray(args) {\n return args.length === 1 && isArray(args[0]) ? args[0] : args;\n}\n","export function arrRemove(arr, item) {\n if (arr) {\n const index = arr.indexOf(item);\n 0 <= index && arr.splice(index, 1);\n }\n}\n","export function createErrorClass(createImpl) {\n const _super = (instance) => {\n Error.call(instance);\n instance.stack = new Error().stack;\n };\n const ctorFunc = createImpl(_super);\n ctorFunc.prototype = Object.create(Error.prototype);\n ctorFunc.prototype.constructor = ctorFunc;\n return ctorFunc;\n}\n","export function createObject(keys, values) {\n return keys.reduce((result, key, i) => ((result[key] = values[i]), result), {});\n}\n","import { config } from '../config';\nlet context = null;\nexport function errorContext(cb) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n const isRoot = !context;\n if (isRoot) {\n context = { errorThrown: false, error: null };\n }\n cb();\n if (isRoot) {\n const { errorThrown, error } = context;\n context = null;\n if (errorThrown) {\n throw error;\n }\n }\n }\n else {\n cb();\n }\n}\nexport function captureError(err) {\n if (config.useDeprecatedSynchronousErrorHandling && context) {\n context.errorThrown = true;\n context.error = err;\n }\n}\n","export function executeSchedule(parentSubscription, scheduler, work, delay = 0, repeat = false) {\n const scheduleSubscription = scheduler.schedule(function () {\n work();\n if (repeat) {\n parentSubscription.add(this.schedule(null, delay));\n }\n else {\n this.unsubscribe();\n }\n }, delay);\n parentSubscription.add(scheduleSubscription);\n if (!repeat) {\n return scheduleSubscription;\n }\n}\n","export function identity(x) {\n return x;\n}\n","export const isArrayLike = ((x) => x && typeof x.length === 'number' && typeof x !== 'function');\n","import { isFunction } from './isFunction';\nexport function isAsyncIterable(obj) {\n return Symbol.asyncIterator && isFunction(obj === null || obj === void 0 ? void 0 : obj[Symbol.asyncIterator]);\n}\n","export function isValidDate(value) {\n return value instanceof Date && !isNaN(value);\n}\n","export function isFunction(value) {\n return typeof value === 'function';\n}\n","import { observable as Symbol_observable } from '../symbol/observable';\nimport { isFunction } from './isFunction';\nexport function isInteropObservable(input) {\n return isFunction(input[Symbol_observable]);\n}\n","import { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from './isFunction';\nexport function isIterable(input) {\n return isFunction(input === null || input === void 0 ? void 0 : input[Symbol_iterator]);\n}\n","import { Observable } from '../Observable';\nimport { isFunction } from './isFunction';\nexport function isObservable(obj) {\n return !!obj && (obj instanceof Observable || (isFunction(obj.lift) && isFunction(obj.subscribe)));\n}\n","import { isFunction } from \"./isFunction\";\nexport function isPromise(value) {\n return isFunction(value === null || value === void 0 ? void 0 : value.then);\n}\n","import { __asyncGenerator, __await } from \"tslib\";\nimport { isFunction } from './isFunction';\nexport function readableStreamLikeToAsyncGenerator(readableStream) {\n return __asyncGenerator(this, arguments, function* readableStreamLikeToAsyncGenerator_1() {\n const reader = readableStream.getReader();\n try {\n while (true) {\n const { value, done } = yield __await(reader.read());\n if (done) {\n return yield __await(void 0);\n }\n yield yield __await(value);\n }\n }\n finally {\n reader.releaseLock();\n }\n });\n}\nexport function isReadableStreamLike(obj) {\n return isFunction(obj === null || obj === void 0 ? void 0 : obj.getReader);\n}\n","import { isFunction } from './isFunction';\nexport function isScheduler(value) {\n return value && isFunction(value.schedule);\n}\n","import { isFunction } from './isFunction';\nexport function hasLift(source) {\n return isFunction(source === null || source === void 0 ? void 0 : source.lift);\n}\nexport function operate(init) {\n return (source) => {\n if (hasLift(source)) {\n return source.lift(function (liftedSource) {\n try {\n return init(liftedSource, this);\n }\n catch (err) {\n this.error(err);\n }\n });\n }\n throw new TypeError('Unable to lift unknown Observable type');\n };\n}\n","import { map } from \"../operators/map\";\nconst { isArray } = Array;\nfunction callOrApply(fn, args) {\n return isArray(args) ? fn(...args) : fn(args);\n}\nexport function mapOneOrManyArgs(fn) {\n return map(args => callOrApply(fn, args));\n}\n","export function noop() { }\n","import { identity } from './identity';\nexport function pipe(...fns) {\n return pipeFromArray(fns);\n}\nexport function pipeFromArray(fns) {\n if (fns.length === 0) {\n return identity;\n }\n if (fns.length === 1) {\n return fns[0];\n }\n return function piped(input) {\n return fns.reduce((prev, fn) => fn(prev), input);\n };\n}\n","import { config } from '../config';\nimport { timeoutProvider } from '../scheduler/timeoutProvider';\nexport function reportUnhandledError(err) {\n timeoutProvider.setTimeout(() => {\n const { onUnhandledError } = config;\n if (onUnhandledError) {\n onUnhandledError(err);\n }\n else {\n throw err;\n }\n });\n}\n","export function createInvalidObservableTypeError(input) {\n return new TypeError(`You provided ${input !== null && typeof input === 'object' ? 'an invalid object' : `'${input}'`} where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.`);\n}\n","'use strict';\n\nvar transportList = require('./transport-list');\n\nmodule.exports = require('./main')(transportList);\n\n// TODO can't get rid of this until all servers do\nif ('_sockjs_onload' in global) {\n setTimeout(global._sockjs_onload, 1);\n}\n","'use strict';\n\nvar inherits = require('inherits')\n , Event = require('./event')\n ;\n\nfunction CloseEvent() {\n Event.call(this);\n this.initEvent('close', false, false);\n this.wasClean = false;\n this.code = 0;\n this.reason = '';\n}\n\ninherits(CloseEvent, Event);\n\nmodule.exports = CloseEvent;\n","'use strict';\n\nvar inherits = require('inherits')\n , EventTarget = require('./eventtarget')\n ;\n\nfunction EventEmitter() {\n EventTarget.call(this);\n}\n\ninherits(EventEmitter, EventTarget);\n\nEventEmitter.prototype.removeAllListeners = function(type) {\n if (type) {\n delete this._listeners[type];\n } else {\n this._listeners = {};\n }\n};\n\nEventEmitter.prototype.once = function(type, listener) {\n var self = this\n , fired = false;\n\n function g() {\n self.removeListener(type, g);\n\n if (!fired) {\n fired = true;\n listener.apply(this, arguments);\n }\n }\n\n this.on(type, g);\n};\n\nEventEmitter.prototype.emit = function() {\n var type = arguments[0];\n var listeners = this._listeners[type];\n if (!listeners) {\n return;\n }\n // equivalent of Array.prototype.slice.call(arguments, 1);\n var l = arguments.length;\n var args = new Array(l - 1);\n for (var ai = 1; ai < l; ai++) {\n args[ai - 1] = arguments[ai];\n }\n for (var i = 0; i < listeners.length; i++) {\n listeners[i].apply(this, args);\n }\n};\n\nEventEmitter.prototype.on = EventEmitter.prototype.addListener = EventTarget.prototype.addEventListener;\nEventEmitter.prototype.removeListener = EventTarget.prototype.removeEventListener;\n\nmodule.exports.EventEmitter = EventEmitter;\n","'use strict';\n\nfunction Event(eventType) {\n this.type = eventType;\n}\n\nEvent.prototype.initEvent = function(eventType, canBubble, cancelable) {\n this.type = eventType;\n this.bubbles = canBubble;\n this.cancelable = cancelable;\n this.timeStamp = +new Date();\n return this;\n};\n\nEvent.prototype.stopPropagation = function() {};\nEvent.prototype.preventDefault = function() {};\n\nEvent.CAPTURING_PHASE = 1;\nEvent.AT_TARGET = 2;\nEvent.BUBBLING_PHASE = 3;\n\nmodule.exports = Event;\n","'use strict';\n\n/* Simplified implementation of DOM2 EventTarget.\n * http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget\n */\n\nfunction EventTarget() {\n this._listeners = {};\n}\n\nEventTarget.prototype.addEventListener = function(eventType, listener) {\n if (!(eventType in this._listeners)) {\n this._listeners[eventType] = [];\n }\n var arr = this._listeners[eventType];\n // #4\n if (arr.indexOf(listener) === -1) {\n // Make a copy so as not to interfere with a current dispatchEvent.\n arr = arr.concat([listener]);\n }\n this._listeners[eventType] = arr;\n};\n\nEventTarget.prototype.removeEventListener = function(eventType, listener) {\n var arr = this._listeners[eventType];\n if (!arr) {\n return;\n }\n var idx = arr.indexOf(listener);\n if (idx !== -1) {\n if (arr.length > 1) {\n // Make a copy so as not to interfere with a current dispatchEvent.\n this._listeners[eventType] = arr.slice(0, idx).concat(arr.slice(idx + 1));\n } else {\n delete this._listeners[eventType];\n }\n return;\n }\n};\n\nEventTarget.prototype.dispatchEvent = function() {\n var event = arguments[0];\n var t = event.type;\n // equivalent of Array.prototype.slice.call(arguments, 0);\n var args = arguments.length === 1 ? [event] : Array.apply(null, arguments);\n // TODO: This doesn't match the real behavior; per spec, onfoo get\n // their place in line from the /first/ time they're set from\n // non-null. Although WebKit bumps it to the end every time it's\n // set.\n if (this['on' + t]) {\n this['on' + t].apply(this, args);\n }\n if (t in this._listeners) {\n // Grab a reference to the listeners list. removeEventListener may alter the list.\n var listeners = this._listeners[t];\n for (var i = 0; i < listeners.length; i++) {\n listeners[i].apply(this, args);\n }\n }\n};\n\nmodule.exports = EventTarget;\n","'use strict';\n\nvar inherits = require('inherits')\n , Event = require('./event')\n ;\n\nfunction TransportMessageEvent(data) {\n Event.call(this);\n this.initEvent('message', false, false);\n this.data = data;\n}\n\ninherits(TransportMessageEvent, Event);\n\nmodule.exports = TransportMessageEvent;\n","'use strict';\n\nvar iframeUtils = require('./utils/iframe')\n ;\n\nfunction FacadeJS(transport) {\n this._transport = transport;\n transport.on('message', this._transportMessage.bind(this));\n transport.on('close', this._transportClose.bind(this));\n}\n\nFacadeJS.prototype._transportClose = function(code, reason) {\n iframeUtils.postMessage('c', JSON.stringify([code, reason]));\n};\nFacadeJS.prototype._transportMessage = function(frame) {\n iframeUtils.postMessage('t', frame);\n};\nFacadeJS.prototype._send = function(data) {\n this._transport.send(data);\n};\nFacadeJS.prototype._close = function() {\n this._transport.close();\n this._transport.removeAllListeners();\n};\n\nmodule.exports = FacadeJS;\n","'use strict';\n\nvar urlUtils = require('./utils/url')\n , eventUtils = require('./utils/event')\n , FacadeJS = require('./facade')\n , InfoIframeReceiver = require('./info-iframe-receiver')\n , iframeUtils = require('./utils/iframe')\n , loc = require('./location')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:iframe-bootstrap');\n}\n\nmodule.exports = function(SockJS, availableTransports) {\n var transportMap = {};\n availableTransports.forEach(function(at) {\n if (at.facadeTransport) {\n transportMap[at.facadeTransport.transportName] = at.facadeTransport;\n }\n });\n\n // hard-coded for the info iframe\n // TODO see if we can make this more dynamic\n transportMap[InfoIframeReceiver.transportName] = InfoIframeReceiver;\n var parentOrigin;\n\n /* eslint-disable camelcase */\n SockJS.bootstrap_iframe = function() {\n /* eslint-enable camelcase */\n var facade;\n iframeUtils.currentWindowId = loc.hash.slice(1);\n var onMessage = function(e) {\n if (e.source !== parent) {\n return;\n }\n if (typeof parentOrigin === 'undefined') {\n parentOrigin = e.origin;\n }\n if (e.origin !== parentOrigin) {\n return;\n }\n\n var iframeMessage;\n try {\n iframeMessage = JSON.parse(e.data);\n } catch (ignored) {\n debug('bad json', e.data);\n return;\n }\n\n if (iframeMessage.windowId !== iframeUtils.currentWindowId) {\n return;\n }\n switch (iframeMessage.type) {\n case 's':\n var p;\n try {\n p = JSON.parse(iframeMessage.data);\n } catch (ignored) {\n debug('bad json', iframeMessage.data);\n break;\n }\n var version = p[0];\n var transport = p[1];\n var transUrl = p[2];\n var baseUrl = p[3];\n debug(version, transport, transUrl, baseUrl);\n // change this to semver logic\n if (version !== SockJS.version) {\n throw new Error('Incompatible SockJS! Main site uses:' +\n ' \"' + version + '\", the iframe:' +\n ' \"' + SockJS.version + '\".');\n }\n\n if (!urlUtils.isOriginEqual(transUrl, loc.href) ||\n !urlUtils.isOriginEqual(baseUrl, loc.href)) {\n throw new Error('Can\\'t connect to different domain from within an ' +\n 'iframe. (' + loc.href + ', ' + transUrl + ', ' + baseUrl + ')');\n }\n facade = new FacadeJS(new transportMap[transport](transUrl, baseUrl));\n break;\n case 'm':\n facade._send(iframeMessage.data);\n break;\n case 'c':\n if (facade) {\n facade._close();\n }\n facade = null;\n break;\n }\n };\n\n eventUtils.attachEvent('message', onMessage);\n\n // Start\n iframeUtils.postMessage('s');\n };\n};\n","'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n , inherits = require('inherits')\n , objectUtils = require('./utils/object')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:info-ajax');\n}\n\nfunction InfoAjax(url, AjaxObject) {\n EventEmitter.call(this);\n\n var self = this;\n var t0 = +new Date();\n this.xo = new AjaxObject('GET', url);\n\n this.xo.once('finish', function(status, text) {\n var info, rtt;\n if (status === 200) {\n rtt = (+new Date()) - t0;\n if (text) {\n try {\n info = JSON.parse(text);\n } catch (e) {\n debug('bad json', text);\n }\n }\n\n if (!objectUtils.isObject(info)) {\n info = {};\n }\n }\n self.emit('finish', info, rtt);\n self.removeAllListeners();\n });\n}\n\ninherits(InfoAjax, EventEmitter);\n\nInfoAjax.prototype.close = function() {\n this.removeAllListeners();\n this.xo.close();\n};\n\nmodule.exports = InfoAjax;\n","'use strict';\n\nvar inherits = require('inherits')\n , EventEmitter = require('events').EventEmitter\n , XHRLocalObject = require('./transport/sender/xhr-local')\n , InfoAjax = require('./info-ajax')\n ;\n\nfunction InfoReceiverIframe(transUrl) {\n var self = this;\n EventEmitter.call(this);\n\n this.ir = new InfoAjax(transUrl, XHRLocalObject);\n this.ir.once('finish', function(info, rtt) {\n self.ir = null;\n self.emit('message', JSON.stringify([info, rtt]));\n });\n}\n\ninherits(InfoReceiverIframe, EventEmitter);\n\nInfoReceiverIframe.transportName = 'iframe-info-receiver';\n\nInfoReceiverIframe.prototype.close = function() {\n if (this.ir) {\n this.ir.close();\n this.ir = null;\n }\n this.removeAllListeners();\n};\n\nmodule.exports = InfoReceiverIframe;\n","'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n , inherits = require('inherits')\n , utils = require('./utils/event')\n , IframeTransport = require('./transport/iframe')\n , InfoReceiverIframe = require('./info-iframe-receiver')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:info-iframe');\n}\n\nfunction InfoIframe(baseUrl, url) {\n var self = this;\n EventEmitter.call(this);\n\n var go = function() {\n var ifr = self.ifr = new IframeTransport(InfoReceiverIframe.transportName, url, baseUrl);\n\n ifr.once('message', function(msg) {\n if (msg) {\n var d;\n try {\n d = JSON.parse(msg);\n } catch (e) {\n debug('bad json', msg);\n self.emit('finish');\n self.close();\n return;\n }\n\n var info = d[0], rtt = d[1];\n self.emit('finish', info, rtt);\n }\n self.close();\n });\n\n ifr.once('close', function() {\n self.emit('finish');\n self.close();\n });\n };\n\n // TODO this seems the same as the 'needBody' from transports\n if (!global.document.body) {\n utils.attachEvent('load', go);\n } else {\n go();\n }\n}\n\ninherits(InfoIframe, EventEmitter);\n\nInfoIframe.enabled = function() {\n return IframeTransport.enabled();\n};\n\nInfoIframe.prototype.close = function() {\n if (this.ifr) {\n this.ifr.close();\n }\n this.removeAllListeners();\n this.ifr = null;\n};\n\nmodule.exports = InfoIframe;\n","'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n , inherits = require('inherits')\n , urlUtils = require('./utils/url')\n , XDR = require('./transport/sender/xdr')\n , XHRCors = require('./transport/sender/xhr-cors')\n , XHRLocal = require('./transport/sender/xhr-local')\n , XHRFake = require('./transport/sender/xhr-fake')\n , InfoIframe = require('./info-iframe')\n , InfoAjax = require('./info-ajax')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:info-receiver');\n}\n\nfunction InfoReceiver(baseUrl, urlInfo) {\n debug(baseUrl);\n var self = this;\n EventEmitter.call(this);\n\n setTimeout(function() {\n self.doXhr(baseUrl, urlInfo);\n }, 0);\n}\n\ninherits(InfoReceiver, EventEmitter);\n\n// TODO this is currently ignoring the list of available transports and the whitelist\n\nInfoReceiver._getReceiver = function(baseUrl, url, urlInfo) {\n // determine method of CORS support (if needed)\n if (urlInfo.sameOrigin) {\n return new InfoAjax(url, XHRLocal);\n }\n if (XHRCors.enabled) {\n return new InfoAjax(url, XHRCors);\n }\n if (XDR.enabled && urlInfo.sameScheme) {\n return new InfoAjax(url, XDR);\n }\n if (InfoIframe.enabled()) {\n return new InfoIframe(baseUrl, url);\n }\n return new InfoAjax(url, XHRFake);\n};\n\nInfoReceiver.prototype.doXhr = function(baseUrl, urlInfo) {\n var self = this\n , url = urlUtils.addPath(baseUrl, '/info')\n ;\n debug('doXhr', url);\n\n this.xo = InfoReceiver._getReceiver(baseUrl, url, urlInfo);\n\n this.timeoutRef = setTimeout(function() {\n debug('timeout');\n self._cleanup(false);\n self.emit('finish');\n }, InfoReceiver.timeout);\n\n this.xo.once('finish', function(info, rtt) {\n debug('finish', info, rtt);\n self._cleanup(true);\n self.emit('finish', info, rtt);\n });\n};\n\nInfoReceiver.prototype._cleanup = function(wasClean) {\n debug('_cleanup');\n clearTimeout(this.timeoutRef);\n this.timeoutRef = null;\n if (!wasClean && this.xo) {\n this.xo.close();\n }\n this.xo = null;\n};\n\nInfoReceiver.prototype.close = function() {\n debug('close');\n this.removeAllListeners();\n this._cleanup(false);\n};\n\nInfoReceiver.timeout = 8000;\n\nmodule.exports = InfoReceiver;\n","'use strict';\n\nmodule.exports = global.location || {\n origin: 'http://localhost:80'\n, protocol: 'http:'\n, host: 'localhost'\n, port: 80\n, href: 'http://localhost/'\n, hash: ''\n};\n","'use strict';\n\nrequire('./shims');\n\nvar URL = require('url-parse')\n , inherits = require('inherits')\n , random = require('./utils/random')\n , escape = require('./utils/escape')\n , urlUtils = require('./utils/url')\n , eventUtils = require('./utils/event')\n , transport = require('./utils/transport')\n , objectUtils = require('./utils/object')\n , browser = require('./utils/browser')\n , log = require('./utils/log')\n , Event = require('./event/event')\n , EventTarget = require('./event/eventtarget')\n , loc = require('./location')\n , CloseEvent = require('./event/close')\n , TransportMessageEvent = require('./event/trans-message')\n , InfoReceiver = require('./info-receiver')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:main');\n}\n\nvar transports;\n\n// follow constructor steps defined at http://dev.w3.org/html5/websockets/#the-websocket-interface\nfunction SockJS(url, protocols, options) {\n if (!(this instanceof SockJS)) {\n return new SockJS(url, protocols, options);\n }\n if (arguments.length < 1) {\n throw new TypeError(\"Failed to construct 'SockJS: 1 argument required, but only 0 present\");\n }\n EventTarget.call(this);\n\n this.readyState = SockJS.CONNECTING;\n this.extensions = '';\n this.protocol = '';\n\n // non-standard extension\n options = options || {};\n if (options.protocols_whitelist) {\n log.warn(\"'protocols_whitelist' is DEPRECATED. Use 'transports' instead.\");\n }\n this._transportsWhitelist = options.transports;\n this._transportOptions = options.transportOptions || {};\n this._timeout = options.timeout || 0;\n\n var sessionId = options.sessionId || 8;\n if (typeof sessionId === 'function') {\n this._generateSessionId = sessionId;\n } else if (typeof sessionId === 'number') {\n this._generateSessionId = function() {\n return random.string(sessionId);\n };\n } else {\n throw new TypeError('If sessionId is used in the options, it needs to be a number or a function.');\n }\n\n this._server = options.server || random.numberString(1000);\n\n // Step 1 of WS spec - parse and validate the url. Issue #8\n var parsedUrl = new URL(url);\n if (!parsedUrl.host || !parsedUrl.protocol) {\n throw new SyntaxError(\"The URL '\" + url + \"' is invalid\");\n } else if (parsedUrl.hash) {\n throw new SyntaxError('The URL must not contain a fragment');\n } else if (parsedUrl.protocol !== 'http:' && parsedUrl.protocol !== 'https:') {\n throw new SyntaxError(\"The URL's scheme must be either 'http:' or 'https:'. '\" + parsedUrl.protocol + \"' is not allowed.\");\n }\n\n var secure = parsedUrl.protocol === 'https:';\n // Step 2 - don't allow secure origin with an insecure protocol\n if (loc.protocol === 'https:' && !secure) {\n // exception is 127.0.0.0/8 and ::1 urls\n if (!urlUtils.isLoopbackAddr(parsedUrl.hostname)) {\n throw new Error('SecurityError: An insecure SockJS connection may not be initiated from a page loaded over HTTPS');\n }\n }\n\n // Step 3 - check port access - no need here\n // Step 4 - parse protocols argument\n if (!protocols) {\n protocols = [];\n } else if (!Array.isArray(protocols)) {\n protocols = [protocols];\n }\n\n // Step 5 - check protocols argument\n var sortedProtocols = protocols.sort();\n sortedProtocols.forEach(function(proto, i) {\n if (!proto) {\n throw new SyntaxError(\"The protocols entry '\" + proto + \"' is invalid.\");\n }\n if (i < (sortedProtocols.length - 1) && proto === sortedProtocols[i + 1]) {\n throw new SyntaxError(\"The protocols entry '\" + proto + \"' is duplicated.\");\n }\n });\n\n // Step 6 - convert origin\n var o = urlUtils.getOrigin(loc.href);\n this._origin = o ? o.toLowerCase() : null;\n\n // remove the trailing slash\n parsedUrl.set('pathname', parsedUrl.pathname.replace(/\\/+$/, ''));\n\n // store the sanitized url\n this.url = parsedUrl.href;\n debug('using url', this.url);\n\n // Step 7 - start connection in background\n // obtain server info\n // http://sockjs.github.io/sockjs-protocol/sockjs-protocol-0.3.3.html#section-26\n this._urlInfo = {\n nullOrigin: !browser.hasDomain()\n , sameOrigin: urlUtils.isOriginEqual(this.url, loc.href)\n , sameScheme: urlUtils.isSchemeEqual(this.url, loc.href)\n };\n\n this._ir = new InfoReceiver(this.url, this._urlInfo);\n this._ir.once('finish', this._receiveInfo.bind(this));\n}\n\ninherits(SockJS, EventTarget);\n\nfunction userSetCode(code) {\n return code === 1000 || (code >= 3000 && code <= 4999);\n}\n\nSockJS.prototype.close = function(code, reason) {\n // Step 1\n if (code && !userSetCode(code)) {\n throw new Error('InvalidAccessError: Invalid code');\n }\n // Step 2.4 states the max is 123 bytes, but we are just checking length\n if (reason && reason.length > 123) {\n throw new SyntaxError('reason argument has an invalid length');\n }\n\n // Step 3.1\n if (this.readyState === SockJS.CLOSING || this.readyState === SockJS.CLOSED) {\n return;\n }\n\n // TODO look at docs to determine how to set this\n var wasClean = true;\n this._close(code || 1000, reason || 'Normal closure', wasClean);\n};\n\nSockJS.prototype.send = function(data) {\n // #13 - convert anything non-string to string\n // TODO this currently turns objects into [object Object]\n if (typeof data !== 'string') {\n data = '' + data;\n }\n if (this.readyState === SockJS.CONNECTING) {\n throw new Error('InvalidStateError: The connection has not been established yet');\n }\n if (this.readyState !== SockJS.OPEN) {\n return;\n }\n this._transport.send(escape.quote(data));\n};\n\nSockJS.version = require('./version');\n\nSockJS.CONNECTING = 0;\nSockJS.OPEN = 1;\nSockJS.CLOSING = 2;\nSockJS.CLOSED = 3;\n\nSockJS.prototype._receiveInfo = function(info, rtt) {\n debug('_receiveInfo', rtt);\n this._ir = null;\n if (!info) {\n this._close(1002, 'Cannot connect to server');\n return;\n }\n\n // establish a round-trip timeout (RTO) based on the\n // round-trip time (RTT)\n this._rto = this.countRTO(rtt);\n // allow server to override url used for the actual transport\n this._transUrl = info.base_url ? info.base_url : this.url;\n info = objectUtils.extend(info, this._urlInfo);\n debug('info', info);\n // determine list of desired and supported transports\n var enabledTransports = transports.filterToEnabled(this._transportsWhitelist, info);\n this._transports = enabledTransports.main;\n debug(this._transports.length + ' enabled transports');\n\n this._connect();\n};\n\nSockJS.prototype._connect = function() {\n for (var Transport = this._transports.shift(); Transport; Transport = this._transports.shift()) {\n debug('attempt', Transport.transportName);\n if (Transport.needBody) {\n if (!global.document.body ||\n (typeof global.document.readyState !== 'undefined' &&\n global.document.readyState !== 'complete' &&\n global.document.readyState !== 'interactive')) {\n debug('waiting for body');\n this._transports.unshift(Transport);\n eventUtils.attachEvent('load', this._connect.bind(this));\n return;\n }\n }\n\n // calculate timeout based on RTO and round trips. Default to 5s\n var timeoutMs = Math.max(this._timeout, (this._rto * Transport.roundTrips) || 5000);\n this._transportTimeoutId = setTimeout(this._transportTimeout.bind(this), timeoutMs);\n debug('using timeout', timeoutMs);\n\n var transportUrl = urlUtils.addPath(this._transUrl, '/' + this._server + '/' + this._generateSessionId());\n var options = this._transportOptions[Transport.transportName];\n debug('transport url', transportUrl);\n var transportObj = new Transport(transportUrl, this._transUrl, options);\n transportObj.on('message', this._transportMessage.bind(this));\n transportObj.once('close', this._transportClose.bind(this));\n transportObj.transportName = Transport.transportName;\n this._transport = transportObj;\n\n return;\n }\n this._close(2000, 'All transports failed', false);\n};\n\nSockJS.prototype._transportTimeout = function() {\n debug('_transportTimeout');\n if (this.readyState === SockJS.CONNECTING) {\n if (this._transport) {\n this._transport.close();\n }\n\n this._transportClose(2007, 'Transport timed out');\n }\n};\n\nSockJS.prototype._transportMessage = function(msg) {\n debug('_transportMessage', msg);\n var self = this\n , type = msg.slice(0, 1)\n , content = msg.slice(1)\n , payload\n ;\n\n // first check for messages that don't need a payload\n switch (type) {\n case 'o':\n this._open();\n return;\n case 'h':\n this.dispatchEvent(new Event('heartbeat'));\n debug('heartbeat', this.transport);\n return;\n }\n\n if (content) {\n try {\n payload = JSON.parse(content);\n } catch (e) {\n debug('bad json', content);\n }\n }\n\n if (typeof payload === 'undefined') {\n debug('empty payload', content);\n return;\n }\n\n switch (type) {\n case 'a':\n if (Array.isArray(payload)) {\n payload.forEach(function(p) {\n debug('message', self.transport, p);\n self.dispatchEvent(new TransportMessageEvent(p));\n });\n }\n break;\n case 'm':\n debug('message', this.transport, payload);\n this.dispatchEvent(new TransportMessageEvent(payload));\n break;\n case 'c':\n if (Array.isArray(payload) && payload.length === 2) {\n this._close(payload[0], payload[1], true);\n }\n break;\n }\n};\n\nSockJS.prototype._transportClose = function(code, reason) {\n debug('_transportClose', this.transport, code, reason);\n if (this._transport) {\n this._transport.removeAllListeners();\n this._transport = null;\n this.transport = null;\n }\n\n if (!userSetCode(code) && code !== 2000 && this.readyState === SockJS.CONNECTING) {\n this._connect();\n return;\n }\n\n this._close(code, reason);\n};\n\nSockJS.prototype._open = function() {\n debug('_open', this._transport && this._transport.transportName, this.readyState);\n if (this.readyState === SockJS.CONNECTING) {\n if (this._transportTimeoutId) {\n clearTimeout(this._transportTimeoutId);\n this._transportTimeoutId = null;\n }\n this.readyState = SockJS.OPEN;\n this.transport = this._transport.transportName;\n this.dispatchEvent(new Event('open'));\n debug('connected', this.transport);\n } else {\n // The server might have been restarted, and lost track of our\n // connection.\n this._close(1006, 'Server lost session');\n }\n};\n\nSockJS.prototype._close = function(code, reason, wasClean) {\n debug('_close', this.transport, code, reason, wasClean, this.readyState);\n var forceFail = false;\n\n if (this._ir) {\n forceFail = true;\n this._ir.close();\n this._ir = null;\n }\n if (this._transport) {\n this._transport.close();\n this._transport = null;\n this.transport = null;\n }\n\n if (this.readyState === SockJS.CLOSED) {\n throw new Error('InvalidStateError: SockJS has already been closed');\n }\n\n this.readyState = SockJS.CLOSING;\n setTimeout(function() {\n this.readyState = SockJS.CLOSED;\n\n if (forceFail) {\n this.dispatchEvent(new Event('error'));\n }\n\n var e = new CloseEvent('close');\n e.wasClean = wasClean || false;\n e.code = code || 1000;\n e.reason = reason;\n\n this.dispatchEvent(e);\n this.onmessage = this.onclose = this.onerror = null;\n debug('disconnected');\n }.bind(this), 0);\n};\n\n// See: http://www.erg.abdn.ac.uk/~gerrit/dccp/notes/ccid2/rto_estimator/\n// and RFC 2988.\nSockJS.prototype.countRTO = function(rtt) {\n // In a local environment, when using IE8/9 and the `jsonp-polling`\n // transport the time needed to establish a connection (the time that pass\n // from the opening of the transport to the call of `_dispatchOpen`) is\n // around 200msec (the lower bound used in the article above) and this\n // causes spurious timeouts. For this reason we calculate a value slightly\n // larger than that used in the article.\n if (rtt > 100) {\n return 4 * rtt; // rto > 400msec\n }\n return 300 + rtt; // 300msec < rto <= 400msec\n};\n\nmodule.exports = function(availableTransports) {\n transports = transport(availableTransports);\n require('./iframe-bootstrap')(SockJS, availableTransports);\n return SockJS;\n};\n","/* eslint-disable */\n/* jscs: disable */\n'use strict';\n\n// pulled specific shims from https://github.com/es-shims/es5-shim\n\nvar ArrayPrototype = Array.prototype;\nvar ObjectPrototype = Object.prototype;\nvar FunctionPrototype = Function.prototype;\nvar StringPrototype = String.prototype;\nvar array_slice = ArrayPrototype.slice;\n\nvar _toString = ObjectPrototype.toString;\nvar isFunction = function (val) {\n return ObjectPrototype.toString.call(val) === '[object Function]';\n};\nvar isArray = function isArray(obj) {\n return _toString.call(obj) === '[object Array]';\n};\nvar isString = function isString(obj) {\n return _toString.call(obj) === '[object String]';\n};\n\nvar supportsDescriptors = Object.defineProperty && (function () {\n try {\n Object.defineProperty({}, 'x', {});\n return true;\n } catch (e) { /* this is ES3 */\n return false;\n }\n}());\n\n// Define configurable, writable and non-enumerable props\n// if they don't exist.\nvar defineProperty;\nif (supportsDescriptors) {\n defineProperty = function (object, name, method, forceAssign) {\n if (!forceAssign && (name in object)) { return; }\n Object.defineProperty(object, name, {\n configurable: true,\n enumerable: false,\n writable: true,\n value: method\n });\n };\n} else {\n defineProperty = function (object, name, method, forceAssign) {\n if (!forceAssign && (name in object)) { return; }\n object[name] = method;\n };\n}\nvar defineProperties = function (object, map, forceAssign) {\n for (var name in map) {\n if (ObjectPrototype.hasOwnProperty.call(map, name)) {\n defineProperty(object, name, map[name], forceAssign);\n }\n }\n};\n\nvar toObject = function (o) {\n if (o == null) { // this matches both null and undefined\n throw new TypeError(\"can't convert \" + o + ' to object');\n }\n return Object(o);\n};\n\n//\n// Util\n// ======\n//\n\n// ES5 9.4\n// http://es5.github.com/#x9.4\n// http://jsperf.com/to-integer\n\nfunction toInteger(num) {\n var n = +num;\n if (n !== n) { // isNaN\n n = 0;\n } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {\n n = (n > 0 || -1) * Math.floor(Math.abs(n));\n }\n return n;\n}\n\nfunction ToUint32(x) {\n return x >>> 0;\n}\n\n//\n// Function\n// ========\n//\n\n// ES-5 15.3.4.5\n// http://es5.github.com/#x15.3.4.5\n\nfunction Empty() {}\n\ndefineProperties(FunctionPrototype, {\n bind: function bind(that) { // .length is 1\n // 1. Let Target be the this value.\n var target = this;\n // 2. If IsCallable(Target) is false, throw a TypeError exception.\n if (!isFunction(target)) {\n throw new TypeError('Function.prototype.bind called on incompatible ' + target);\n }\n // 3. Let A be a new (possibly empty) internal list of all of the\n // argument values provided after thisArg (arg1, arg2 etc), in order.\n // XXX slicedArgs will stand in for \"A\" if used\n var args = array_slice.call(arguments, 1); // for normal call\n // 4. Let F be a new native ECMAScript object.\n // 11. Set the [[Prototype]] internal property of F to the standard\n // built-in Function prototype object as specified in 15.3.3.1.\n // 12. Set the [[Call]] internal property of F as described in\n // 15.3.4.5.1.\n // 13. Set the [[Construct]] internal property of F as described in\n // 15.3.4.5.2.\n // 14. Set the [[HasInstance]] internal property of F as described in\n // 15.3.4.5.3.\n var binder = function () {\n\n if (this instanceof bound) {\n // 15.3.4.5.2 [[Construct]]\n // When the [[Construct]] internal method of a function object,\n // F that was created using the bind function is called with a\n // list of arguments ExtraArgs, the following steps are taken:\n // 1. Let target be the value of F's [[TargetFunction]]\n // internal property.\n // 2. If target has no [[Construct]] internal method, a\n // TypeError exception is thrown.\n // 3. Let boundArgs be the value of F's [[BoundArgs]] internal\n // property.\n // 4. Let args be a new list containing the same values as the\n // list boundArgs in the same order followed by the same\n // values as the list ExtraArgs in the same order.\n // 5. Return the result of calling the [[Construct]] internal\n // method of target providing args as the arguments.\n\n var result = target.apply(\n this,\n args.concat(array_slice.call(arguments))\n );\n if (Object(result) === result) {\n return result;\n }\n return this;\n\n } else {\n // 15.3.4.5.1 [[Call]]\n // When the [[Call]] internal method of a function object, F,\n // which was created using the bind function is called with a\n // this value and a list of arguments ExtraArgs, the following\n // steps are taken:\n // 1. Let boundArgs be the value of F's [[BoundArgs]] internal\n // property.\n // 2. Let boundThis be the value of F's [[BoundThis]] internal\n // property.\n // 3. Let target be the value of F's [[TargetFunction]] internal\n // property.\n // 4. Let args be a new list containing the same values as the\n // list boundArgs in the same order followed by the same\n // values as the list ExtraArgs in the same order.\n // 5. Return the result of calling the [[Call]] internal method\n // of target providing boundThis as the this value and\n // providing args as the arguments.\n\n // equiv: target.call(this, ...boundArgs, ...args)\n return target.apply(\n that,\n args.concat(array_slice.call(arguments))\n );\n\n }\n\n };\n\n // 15. If the [[Class]] internal property of Target is \"Function\", then\n // a. Let L be the length property of Target minus the length of A.\n // b. Set the length own property of F to either 0 or L, whichever is\n // larger.\n // 16. Else set the length own property of F to 0.\n\n var boundLength = Math.max(0, target.length - args.length);\n\n // 17. Set the attributes of the length own property of F to the values\n // specified in 15.3.5.1.\n var boundArgs = [];\n for (var i = 0; i < boundLength; i++) {\n boundArgs.push('$' + i);\n }\n\n // XXX Build a dynamic function with desired amount of arguments is the only\n // way to set the length property of a function.\n // In environments where Content Security Policies enabled (Chrome extensions,\n // for ex.) all use of eval or Function costructor throws an exception.\n // However in all of these environments Function.prototype.bind exists\n // and so this code will never be executed.\n var bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this, arguments); }')(binder);\n\n if (target.prototype) {\n Empty.prototype = target.prototype;\n bound.prototype = new Empty();\n // Clean up dangling references.\n Empty.prototype = null;\n }\n\n // TODO\n // 18. Set the [[Extensible]] internal property of F to true.\n\n // TODO\n // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).\n // 20. Call the [[DefineOwnProperty]] internal method of F with\n // arguments \"caller\", PropertyDescriptor {[[Get]]: thrower, [[Set]]:\n // thrower, [[Enumerable]]: false, [[Configurable]]: false}, and\n // false.\n // 21. Call the [[DefineOwnProperty]] internal method of F with\n // arguments \"arguments\", PropertyDescriptor {[[Get]]: thrower,\n // [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},\n // and false.\n\n // TODO\n // NOTE Function objects created using Function.prototype.bind do not\n // have a prototype property or the [[Code]], [[FormalParameters]], and\n // [[Scope]] internal properties.\n // XXX can't delete prototype in pure-js.\n\n // 22. Return F.\n return bound;\n }\n});\n\n//\n// Array\n// =====\n//\n\n// ES5 15.4.3.2\n// http://es5.github.com/#x15.4.3.2\n// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray\ndefineProperties(Array, { isArray: isArray });\n\n\nvar boxedString = Object('a');\nvar splitString = boxedString[0] !== 'a' || !(0 in boxedString);\n\nvar properlyBoxesContext = function properlyBoxed(method) {\n // Check node 0.6.21 bug where third parameter is not boxed\n var properlyBoxesNonStrict = true;\n var properlyBoxesStrict = true;\n if (method) {\n method.call('foo', function (_, __, context) {\n if (typeof context !== 'object') { properlyBoxesNonStrict = false; }\n });\n\n method.call([1], function () {\n 'use strict';\n properlyBoxesStrict = typeof this === 'string';\n }, 'x');\n }\n return !!method && properlyBoxesNonStrict && properlyBoxesStrict;\n};\n\ndefineProperties(ArrayPrototype, {\n forEach: function forEach(fun /*, thisp*/) {\n var object = toObject(this),\n self = splitString && isString(this) ? this.split('') : object,\n thisp = arguments[1],\n i = -1,\n length = self.length >>> 0;\n\n // If no callback function or if callback is not a callable function\n if (!isFunction(fun)) {\n throw new TypeError(); // TODO message\n }\n\n while (++i < length) {\n if (i in self) {\n // Invoke the callback function with call, passing arguments:\n // context, property value, property key, thisArg object\n // context\n fun.call(thisp, self[i], i, object);\n }\n }\n }\n}, !properlyBoxesContext(ArrayPrototype.forEach));\n\n// ES5 15.4.4.14\n// http://es5.github.com/#x15.4.4.14\n// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf\nvar hasFirefox2IndexOfBug = Array.prototype.indexOf && [0, 1].indexOf(1, 2) !== -1;\ndefineProperties(ArrayPrototype, {\n indexOf: function indexOf(sought /*, fromIndex */ ) {\n var self = splitString && isString(this) ? this.split('') : toObject(this),\n length = self.length >>> 0;\n\n if (!length) {\n return -1;\n }\n\n var i = 0;\n if (arguments.length > 1) {\n i = toInteger(arguments[1]);\n }\n\n // handle negative indices\n i = i >= 0 ? i : Math.max(0, length + i);\n for (; i < length; i++) {\n if (i in self && self[i] === sought) {\n return i;\n }\n }\n return -1;\n }\n}, hasFirefox2IndexOfBug);\n\n//\n// String\n// ======\n//\n\n// ES5 15.5.4.14\n// http://es5.github.com/#x15.5.4.14\n\n// [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]\n// Many browsers do not split properly with regular expressions or they\n// do not perform the split correctly under obscure conditions.\n// See http://blog.stevenlevithan.com/archives/cross-browser-split\n// I've tested in many browsers and this seems to cover the deviant ones:\n// 'ab'.split(/(?:ab)*/) should be [\"\", \"\"], not [\"\"]\n// '.'.split(/(.?)(.?)/) should be [\"\", \".\", \"\", \"\"], not [\"\", \"\"]\n// 'tesst'.split(/(s)*/) should be [\"t\", undefined, \"e\", \"s\", \"t\"], not\n// [undefined, \"t\", undefined, \"e\", ...]\n// ''.split(/.?/) should be [], not [\"\"]\n// '.'.split(/()()/) should be [\".\"], not [\"\", \"\", \".\"]\n\nvar string_split = StringPrototype.split;\nif (\n 'ab'.split(/(?:ab)*/).length !== 2 ||\n '.'.split(/(.?)(.?)/).length !== 4 ||\n 'tesst'.split(/(s)*/)[1] === 't' ||\n 'test'.split(/(?:)/, -1).length !== 4 ||\n ''.split(/.?/).length ||\n '.'.split(/()()/).length > 1\n) {\n (function () {\n var compliantExecNpcg = /()??/.exec('')[1] === void 0; // NPCG: nonparticipating capturing group\n\n StringPrototype.split = function (separator, limit) {\n var string = this;\n if (separator === void 0 && limit === 0) {\n return [];\n }\n\n // If `separator` is not a regex, use native split\n if (_toString.call(separator) !== '[object RegExp]') {\n return string_split.call(this, separator, limit);\n }\n\n var output = [],\n flags = (separator.ignoreCase ? 'i' : '') +\n (separator.multiline ? 'm' : '') +\n (separator.extended ? 'x' : '') + // Proposed for ES6\n (separator.sticky ? 'y' : ''), // Firefox 3+\n lastLastIndex = 0,\n // Make `global` and avoid `lastIndex` issues by working with a copy\n separator2, match, lastIndex, lastLength;\n separator = new RegExp(separator.source, flags + 'g');\n string += ''; // Type-convert\n if (!compliantExecNpcg) {\n // Doesn't need flags gy, but they don't hurt\n separator2 = new RegExp('^' + separator.source + '$(?!\\\\s)', flags);\n }\n /* Values for `limit`, per the spec:\n * If undefined: 4294967295 // Math.pow(2, 32) - 1\n * If 0, Infinity, or NaN: 0\n * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;\n * If negative number: 4294967296 - Math.floor(Math.abs(limit))\n * If other: Type-convert, then use the above rules\n */\n limit = limit === void 0 ?\n -1 >>> 0 : // Math.pow(2, 32) - 1\n ToUint32(limit);\n while (match = separator.exec(string)) {\n // `separator.lastIndex` is not reliable cross-browser\n lastIndex = match.index + match[0].length;\n if (lastIndex > lastLastIndex) {\n output.push(string.slice(lastLastIndex, match.index));\n // Fix browsers whose `exec` methods don't consistently return `undefined` for\n // nonparticipating capturing groups\n if (!compliantExecNpcg && match.length > 1) {\n match[0].replace(separator2, function () {\n for (var i = 1; i < arguments.length - 2; i++) {\n if (arguments[i] === void 0) {\n match[i] = void 0;\n }\n }\n });\n }\n if (match.length > 1 && match.index < string.length) {\n ArrayPrototype.push.apply(output, match.slice(1));\n }\n lastLength = match[0].length;\n lastLastIndex = lastIndex;\n if (output.length >= limit) {\n break;\n }\n }\n if (separator.lastIndex === match.index) {\n separator.lastIndex++; // Avoid an infinite loop\n }\n }\n if (lastLastIndex === string.length) {\n if (lastLength || !separator.test('')) {\n output.push('');\n }\n } else {\n output.push(string.slice(lastLastIndex));\n }\n return output.length > limit ? output.slice(0, limit) : output;\n };\n }());\n\n// [bugfix, chrome]\n// If separator is undefined, then the result array contains just one String,\n// which is the this value (converted to a String). If limit is not undefined,\n// then the output array is truncated so that it contains no more than limit\n// elements.\n// \"0\".split(undefined, 0) -> []\n} else if ('0'.split(void 0, 0).length) {\n StringPrototype.split = function split(separator, limit) {\n if (separator === void 0 && limit === 0) { return []; }\n return string_split.call(this, separator, limit);\n };\n}\n\n// ECMA-262, 3rd B.2.3\n// Not an ECMAScript standard, although ECMAScript 3rd Edition has a\n// non-normative section suggesting uniform semantics and it should be\n// normalized across all browsers\n// [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE\nvar string_substr = StringPrototype.substr;\nvar hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';\ndefineProperties(StringPrototype, {\n substr: function substr(start, length) {\n return string_substr.call(\n this,\n start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start,\n length\n );\n }\n}, hasNegativeSubstrBug);\n","'use strict';\n\nmodule.exports = [\n // streaming transports\n require('./transport/websocket')\n, require('./transport/xhr-streaming')\n, require('./transport/xdr-streaming')\n, require('./transport/eventsource')\n, require('./transport/lib/iframe-wrap')(require('./transport/eventsource'))\n\n // polling transports\n, require('./transport/htmlfile')\n, require('./transport/lib/iframe-wrap')(require('./transport/htmlfile'))\n, require('./transport/xhr-polling')\n, require('./transport/xdr-polling')\n, require('./transport/lib/iframe-wrap')(require('./transport/xhr-polling'))\n, require('./transport/jsonp-polling')\n];\n","'use strict';\n\nvar EventEmitter = require('events').EventEmitter\n , inherits = require('inherits')\n , utils = require('../../utils/event')\n , urlUtils = require('../../utils/url')\n , XHR = global.XMLHttpRequest\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:browser:xhr');\n}\n\nfunction AbstractXHRObject(method, url, payload, opts) {\n debug(method, url);\n var self = this;\n EventEmitter.call(this);\n\n setTimeout(function () {\n self._start(method, url, payload, opts);\n }, 0);\n}\n\ninherits(AbstractXHRObject, EventEmitter);\n\nAbstractXHRObject.prototype._start = function(method, url, payload, opts) {\n var self = this;\n\n try {\n this.xhr = new XHR();\n } catch (x) {\n // intentionally empty\n }\n\n if (!this.xhr) {\n debug('no xhr');\n this.emit('finish', 0, 'no xhr support');\n this._cleanup();\n return;\n }\n\n // several browsers cache POSTs\n url = urlUtils.addQuery(url, 't=' + (+new Date()));\n\n // Explorer tends to keep connection open, even after the\n // tab gets closed: http://bugs.jquery.com/ticket/5280\n this.unloadRef = utils.unloadAdd(function() {\n debug('unload cleanup');\n self._cleanup(true);\n });\n try {\n this.xhr.open(method, url, true);\n if (this.timeout && 'timeout' in this.xhr) {\n this.xhr.timeout = this.timeout;\n this.xhr.ontimeout = function() {\n debug('xhr timeout');\n self.emit('finish', 0, '');\n self._cleanup(false);\n };\n }\n } catch (e) {\n debug('exception', e);\n // IE raises an exception on wrong port.\n this.emit('finish', 0, '');\n this._cleanup(false);\n return;\n }\n\n if ((!opts || !opts.noCredentials) && AbstractXHRObject.supportsCORS) {\n debug('withCredentials');\n // Mozilla docs says https://developer.mozilla.org/en/XMLHttpRequest :\n // \"This never affects same-site requests.\"\n\n this.xhr.withCredentials = true;\n }\n if (opts && opts.headers) {\n for (var key in opts.headers) {\n this.xhr.setRequestHeader(key, opts.headers[key]);\n }\n }\n\n this.xhr.onreadystatechange = function() {\n if (self.xhr) {\n var x = self.xhr;\n var text, status;\n debug('readyState', x.readyState);\n switch (x.readyState) {\n case 3:\n // IE doesn't like peeking into responseText or status\n // on Microsoft.XMLHTTP and readystate=3\n try {\n status = x.status;\n text = x.responseText;\n } catch (e) {\n // intentionally empty\n }\n debug('status', status);\n // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450\n if (status === 1223) {\n status = 204;\n }\n\n // IE does return readystate == 3 for 404 answers.\n if (status === 200 && text && text.length > 0) {\n debug('chunk');\n self.emit('chunk', status, text);\n }\n break;\n case 4:\n status = x.status;\n debug('status', status);\n // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450\n if (status === 1223) {\n status = 204;\n }\n // IE returns this for a bad port\n // http://msdn.microsoft.com/en-us/library/windows/desktop/aa383770(v=vs.85).aspx\n if (status === 12005 || status === 12029) {\n status = 0;\n }\n\n debug('finish', status, x.responseText);\n self.emit('finish', status, x.responseText);\n self._cleanup(false);\n break;\n }\n }\n };\n\n try {\n self.xhr.send(payload);\n } catch (e) {\n self.emit('finish', 0, '');\n self._cleanup(false);\n }\n};\n\nAbstractXHRObject.prototype._cleanup = function(abort) {\n debug('cleanup');\n if (!this.xhr) {\n return;\n }\n this.removeAllListeners();\n utils.unloadDel(this.unloadRef);\n\n // IE needs this field to be a function\n this.xhr.onreadystatechange = function() {};\n if (this.xhr.ontimeout) {\n this.xhr.ontimeout = null;\n }\n\n if (abort) {\n try {\n this.xhr.abort();\n } catch (x) {\n // intentionally empty\n }\n }\n this.unloadRef = this.xhr = null;\n};\n\nAbstractXHRObject.prototype.close = function() {\n debug('close');\n this._cleanup(true);\n};\n\nAbstractXHRObject.enabled = !!XHR;\n// override XMLHttpRequest for IE6/7\n// obfuscate to avoid firewalls\nvar axo = ['Active'].concat('Object').join('X');\nif (!AbstractXHRObject.enabled && (axo in global)) {\n debug('overriding xmlhttprequest');\n XHR = function() {\n try {\n return new global[axo]('Microsoft.XMLHTTP');\n } catch (e) {\n return null;\n }\n };\n AbstractXHRObject.enabled = !!new XHR();\n}\n\nvar cors = false;\ntry {\n cors = 'withCredentials' in new XHR();\n} catch (ignored) {\n // intentionally empty\n}\n\nAbstractXHRObject.supportsCORS = cors;\n\nmodule.exports = AbstractXHRObject;\n","module.exports = global.EventSource;\n","'use strict';\n\nvar Driver = global.WebSocket || global.MozWebSocket;\nif (Driver) {\n\tmodule.exports = function WebSocketBrowserDriver(url) {\n\t\treturn new Driver(url);\n\t};\n} else {\n\tmodule.exports = undefined;\n}\n","'use strict';\n\nvar inherits = require('inherits')\n , AjaxBasedTransport = require('./lib/ajax-based')\n , EventSourceReceiver = require('./receiver/eventsource')\n , XHRCorsObject = require('./sender/xhr-cors')\n , EventSourceDriver = require('eventsource')\n ;\n\nfunction EventSourceTransport(transUrl) {\n if (!EventSourceTransport.enabled()) {\n throw new Error('Transport created when disabled');\n }\n\n AjaxBasedTransport.call(this, transUrl, '/eventsource', EventSourceReceiver, XHRCorsObject);\n}\n\ninherits(EventSourceTransport, AjaxBasedTransport);\n\nEventSourceTransport.enabled = function() {\n return !!EventSourceDriver;\n};\n\nEventSourceTransport.transportName = 'eventsource';\nEventSourceTransport.roundTrips = 2;\n\nmodule.exports = EventSourceTransport;\n","'use strict';\n\nvar inherits = require('inherits')\n , HtmlfileReceiver = require('./receiver/htmlfile')\n , XHRLocalObject = require('./sender/xhr-local')\n , AjaxBasedTransport = require('./lib/ajax-based')\n ;\n\nfunction HtmlFileTransport(transUrl) {\n if (!HtmlfileReceiver.enabled) {\n throw new Error('Transport created when disabled');\n }\n AjaxBasedTransport.call(this, transUrl, '/htmlfile', HtmlfileReceiver, XHRLocalObject);\n}\n\ninherits(HtmlFileTransport, AjaxBasedTransport);\n\nHtmlFileTransport.enabled = function(info) {\n return HtmlfileReceiver.enabled && info.sameOrigin;\n};\n\nHtmlFileTransport.transportName = 'htmlfile';\nHtmlFileTransport.roundTrips = 2;\n\nmodule.exports = HtmlFileTransport;\n","'use strict';\n\n// Few cool transports do work only for same-origin. In order to make\n// them work cross-domain we shall use iframe, served from the\n// remote domain. New browsers have capabilities to communicate with\n// cross domain iframe using postMessage(). In IE it was implemented\n// from IE 8+, but of course, IE got some details wrong:\n// http://msdn.microsoft.com/en-us/library/cc197015(v=VS.85).aspx\n// http://stevesouders.com/misc/test-postmessage.php\n\nvar inherits = require('inherits')\n , EventEmitter = require('events').EventEmitter\n , version = require('../version')\n , urlUtils = require('../utils/url')\n , iframeUtils = require('../utils/iframe')\n , eventUtils = require('../utils/event')\n , random = require('../utils/random')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:transport:iframe');\n}\n\nfunction IframeTransport(transport, transUrl, baseUrl) {\n if (!IframeTransport.enabled()) {\n throw new Error('Transport created when disabled');\n }\n EventEmitter.call(this);\n\n var self = this;\n this.origin = urlUtils.getOrigin(baseUrl);\n this.baseUrl = baseUrl;\n this.transUrl = transUrl;\n this.transport = transport;\n this.windowId = random.string(8);\n\n var iframeUrl = urlUtils.addPath(baseUrl, '/iframe.html') + '#' + this.windowId;\n debug(transport, transUrl, iframeUrl);\n\n this.iframeObj = iframeUtils.createIframe(iframeUrl, function(r) {\n debug('err callback');\n self.emit('close', 1006, 'Unable to load an iframe (' + r + ')');\n self.close();\n });\n\n this.onmessageCallback = this._message.bind(this);\n eventUtils.attachEvent('message', this.onmessageCallback);\n}\n\ninherits(IframeTransport, EventEmitter);\n\nIframeTransport.prototype.close = function() {\n debug('close');\n this.removeAllListeners();\n if (this.iframeObj) {\n eventUtils.detachEvent('message', this.onmessageCallback);\n try {\n // When the iframe is not loaded, IE raises an exception\n // on 'contentWindow'.\n this.postMessage('c');\n } catch (x) {\n // intentionally empty\n }\n this.iframeObj.cleanup();\n this.iframeObj = null;\n this.onmessageCallback = this.iframeObj = null;\n }\n};\n\nIframeTransport.prototype._message = function(e) {\n debug('message', e.data);\n if (!urlUtils.isOriginEqual(e.origin, this.origin)) {\n debug('not same origin', e.origin, this.origin);\n return;\n }\n\n var iframeMessage;\n try {\n iframeMessage = JSON.parse(e.data);\n } catch (ignored) {\n debug('bad json', e.data);\n return;\n }\n\n if (iframeMessage.windowId !== this.windowId) {\n debug('mismatched window id', iframeMessage.windowId, this.windowId);\n return;\n }\n\n switch (iframeMessage.type) {\n case 's':\n this.iframeObj.loaded();\n // window global dependency\n this.postMessage('s', JSON.stringify([\n version\n , this.transport\n , this.transUrl\n , this.baseUrl\n ]));\n break;\n case 't':\n this.emit('message', iframeMessage.data);\n break;\n case 'c':\n var cdata;\n try {\n cdata = JSON.parse(iframeMessage.data);\n } catch (ignored) {\n debug('bad json', iframeMessage.data);\n return;\n }\n this.emit('close', cdata[0], cdata[1]);\n this.close();\n break;\n }\n};\n\nIframeTransport.prototype.postMessage = function(type, data) {\n debug('postMessage', type, data);\n this.iframeObj.post(JSON.stringify({\n windowId: this.windowId\n , type: type\n , data: data || ''\n }), this.origin);\n};\n\nIframeTransport.prototype.send = function(message) {\n debug('send', message);\n this.postMessage('m', message);\n};\n\nIframeTransport.enabled = function() {\n return iframeUtils.iframeEnabled;\n};\n\nIframeTransport.transportName = 'iframe';\nIframeTransport.roundTrips = 2;\n\nmodule.exports = IframeTransport;\n","'use strict';\n\n// The simplest and most robust transport, using the well-know cross\n// domain hack - JSONP. This transport is quite inefficient - one\n// message could use up to one http request. But at least it works almost\n// everywhere.\n// Known limitations:\n// o you will get a spinning cursor\n// o for Konqueror a dumb timer is needed to detect errors\n\nvar inherits = require('inherits')\n , SenderReceiver = require('./lib/sender-receiver')\n , JsonpReceiver = require('./receiver/jsonp')\n , jsonpSender = require('./sender/jsonp')\n ;\n\nfunction JsonPTransport(transUrl) {\n if (!JsonPTransport.enabled()) {\n throw new Error('Transport created when disabled');\n }\n SenderReceiver.call(this, transUrl, '/jsonp', jsonpSender, JsonpReceiver);\n}\n\ninherits(JsonPTransport, SenderReceiver);\n\nJsonPTransport.enabled = function() {\n return !!global.document;\n};\n\nJsonPTransport.transportName = 'jsonp-polling';\nJsonPTransport.roundTrips = 1;\nJsonPTransport.needBody = true;\n\nmodule.exports = JsonPTransport;\n","'use strict';\n\nvar inherits = require('inherits')\n , urlUtils = require('../../utils/url')\n , SenderReceiver = require('./sender-receiver')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:ajax-based');\n}\n\nfunction createAjaxSender(AjaxObject) {\n return function(url, payload, callback) {\n debug('create ajax sender', url, payload);\n var opt = {};\n if (typeof payload === 'string') {\n opt.headers = {'Content-type': 'text/plain'};\n }\n var ajaxUrl = urlUtils.addPath(url, '/xhr_send');\n var xo = new AjaxObject('POST', ajaxUrl, payload, opt);\n xo.once('finish', function(status) {\n debug('finish', status);\n xo = null;\n\n if (status !== 200 && status !== 204) {\n return callback(new Error('http status ' + status));\n }\n callback();\n });\n return function() {\n debug('abort');\n xo.close();\n xo = null;\n\n var err = new Error('Aborted');\n err.code = 1000;\n callback(err);\n };\n };\n}\n\nfunction AjaxBasedTransport(transUrl, urlSuffix, Receiver, AjaxObject) {\n SenderReceiver.call(this, transUrl, urlSuffix, createAjaxSender(AjaxObject), Receiver, AjaxObject);\n}\n\ninherits(AjaxBasedTransport, SenderReceiver);\n\nmodule.exports = AjaxBasedTransport;\n","'use strict';\n\nvar inherits = require('inherits')\n , EventEmitter = require('events').EventEmitter\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:buffered-sender');\n}\n\nfunction BufferedSender(url, sender) {\n debug(url);\n EventEmitter.call(this);\n this.sendBuffer = [];\n this.sender = sender;\n this.url = url;\n}\n\ninherits(BufferedSender, EventEmitter);\n\nBufferedSender.prototype.send = function(message) {\n debug('send', message);\n this.sendBuffer.push(message);\n if (!this.sendStop) {\n this.sendSchedule();\n }\n};\n\n// For polling transports in a situation when in the message callback,\n// new message is being send. If the sending connection was started\n// before receiving one, it is possible to saturate the network and\n// timeout due to the lack of receiving socket. To avoid that we delay\n// sending messages by some small time, in order to let receiving\n// connection be started beforehand. This is only a halfmeasure and\n// does not fix the big problem, but it does make the tests go more\n// stable on slow networks.\nBufferedSender.prototype.sendScheduleWait = function() {\n debug('sendScheduleWait');\n var self = this;\n var tref;\n this.sendStop = function() {\n debug('sendStop');\n self.sendStop = null;\n clearTimeout(tref);\n };\n tref = setTimeout(function() {\n debug('timeout');\n self.sendStop = null;\n self.sendSchedule();\n }, 25);\n};\n\nBufferedSender.prototype.sendSchedule = function() {\n debug('sendSchedule', this.sendBuffer.length);\n var self = this;\n if (this.sendBuffer.length > 0) {\n var payload = '[' + this.sendBuffer.join(',') + ']';\n this.sendStop = this.sender(this.url, payload, function(err) {\n self.sendStop = null;\n if (err) {\n debug('error', err);\n self.emit('close', err.code || 1006, 'Sending error: ' + err);\n self.close();\n } else {\n self.sendScheduleWait();\n }\n });\n this.sendBuffer = [];\n }\n};\n\nBufferedSender.prototype._cleanup = function() {\n debug('_cleanup');\n this.removeAllListeners();\n};\n\nBufferedSender.prototype.close = function() {\n debug('close');\n this._cleanup();\n if (this.sendStop) {\n this.sendStop();\n this.sendStop = null;\n }\n};\n\nmodule.exports = BufferedSender;\n","'use strict';\n\nvar inherits = require('inherits')\n , IframeTransport = require('../iframe')\n , objectUtils = require('../../utils/object')\n ;\n\nmodule.exports = function(transport) {\n\n function IframeWrapTransport(transUrl, baseUrl) {\n IframeTransport.call(this, transport.transportName, transUrl, baseUrl);\n }\n\n inherits(IframeWrapTransport, IframeTransport);\n\n IframeWrapTransport.enabled = function(url, info) {\n if (!global.document) {\n return false;\n }\n\n var iframeInfo = objectUtils.extend({}, info);\n iframeInfo.sameOrigin = true;\n return transport.enabled(iframeInfo) && IframeTransport.enabled();\n };\n\n IframeWrapTransport.transportName = 'iframe-' + transport.transportName;\n IframeWrapTransport.needBody = true;\n IframeWrapTransport.roundTrips = IframeTransport.roundTrips + transport.roundTrips - 1; // html, javascript (2) + transport - no CORS (1)\n\n IframeWrapTransport.facadeTransport = transport;\n\n return IframeWrapTransport;\n};\n","'use strict';\n\nvar inherits = require('inherits')\n , EventEmitter = require('events').EventEmitter\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:polling');\n}\n\nfunction Polling(Receiver, receiveUrl, AjaxObject) {\n debug(receiveUrl);\n EventEmitter.call(this);\n this.Receiver = Receiver;\n this.receiveUrl = receiveUrl;\n this.AjaxObject = AjaxObject;\n this._scheduleReceiver();\n}\n\ninherits(Polling, EventEmitter);\n\nPolling.prototype._scheduleReceiver = function() {\n debug('_scheduleReceiver');\n var self = this;\n var poll = this.poll = new this.Receiver(this.receiveUrl, this.AjaxObject);\n\n poll.on('message', function(msg) {\n debug('message', msg);\n self.emit('message', msg);\n });\n\n poll.once('close', function(code, reason) {\n debug('close', code, reason, self.pollIsClosing);\n self.poll = poll = null;\n\n if (!self.pollIsClosing) {\n if (reason === 'network') {\n self._scheduleReceiver();\n } else {\n self.emit('close', code || 1006, reason);\n self.removeAllListeners();\n }\n }\n });\n};\n\nPolling.prototype.abort = function() {\n debug('abort');\n this.removeAllListeners();\n this.pollIsClosing = true;\n if (this.poll) {\n this.poll.abort();\n }\n};\n\nmodule.exports = Polling;\n","'use strict';\n\nvar inherits = require('inherits')\n , urlUtils = require('../../utils/url')\n , BufferedSender = require('./buffered-sender')\n , Polling = require('./polling')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:sender-receiver');\n}\n\nfunction SenderReceiver(transUrl, urlSuffix, senderFunc, Receiver, AjaxObject) {\n var pollUrl = urlUtils.addPath(transUrl, urlSuffix);\n debug(pollUrl);\n var self = this;\n BufferedSender.call(this, transUrl, senderFunc);\n\n this.poll = new Polling(Receiver, pollUrl, AjaxObject);\n this.poll.on('message', function(msg) {\n debug('poll message', msg);\n self.emit('message', msg);\n });\n this.poll.once('close', function(code, reason) {\n debug('poll close', code, reason);\n self.poll = null;\n self.emit('close', code, reason);\n self.close();\n });\n}\n\ninherits(SenderReceiver, BufferedSender);\n\nSenderReceiver.prototype.close = function() {\n BufferedSender.prototype.close.call(this);\n debug('close');\n this.removeAllListeners();\n if (this.poll) {\n this.poll.abort();\n this.poll = null;\n }\n};\n\nmodule.exports = SenderReceiver;\n","'use strict';\n\nvar inherits = require('inherits')\n , EventEmitter = require('events').EventEmitter\n , EventSourceDriver = require('eventsource')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:receiver:eventsource');\n}\n\nfunction EventSourceReceiver(url) {\n debug(url);\n EventEmitter.call(this);\n\n var self = this;\n var es = this.es = new EventSourceDriver(url);\n es.onmessage = function(e) {\n debug('message', e.data);\n self.emit('message', decodeURI(e.data));\n };\n es.onerror = function(e) {\n debug('error', es.readyState, e);\n // ES on reconnection has readyState = 0 or 1.\n // on network error it's CLOSED = 2\n var reason = (es.readyState !== 2 ? 'network' : 'permanent');\n self._cleanup();\n self._close(reason);\n };\n}\n\ninherits(EventSourceReceiver, EventEmitter);\n\nEventSourceReceiver.prototype.abort = function() {\n debug('abort');\n this._cleanup();\n this._close('user');\n};\n\nEventSourceReceiver.prototype._cleanup = function() {\n debug('cleanup');\n var es = this.es;\n if (es) {\n es.onmessage = es.onerror = null;\n es.close();\n this.es = null;\n }\n};\n\nEventSourceReceiver.prototype._close = function(reason) {\n debug('close', reason);\n var self = this;\n // Safari and chrome < 15 crash if we close window before\n // waiting for ES cleanup. See:\n // https://code.google.com/p/chromium/issues/detail?id=89155\n setTimeout(function() {\n self.emit('close', null, reason);\n self.removeAllListeners();\n }, 200);\n};\n\nmodule.exports = EventSourceReceiver;\n","'use strict';\n\nvar inherits = require('inherits')\n , iframeUtils = require('../../utils/iframe')\n , urlUtils = require('../../utils/url')\n , EventEmitter = require('events').EventEmitter\n , random = require('../../utils/random')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:receiver:htmlfile');\n}\n\nfunction HtmlfileReceiver(url) {\n debug(url);\n EventEmitter.call(this);\n var self = this;\n iframeUtils.polluteGlobalNamespace();\n\n this.id = 'a' + random.string(6);\n url = urlUtils.addQuery(url, 'c=' + decodeURIComponent(iframeUtils.WPrefix + '.' + this.id));\n\n debug('using htmlfile', HtmlfileReceiver.htmlfileEnabled);\n var constructFunc = HtmlfileReceiver.htmlfileEnabled ?\n iframeUtils.createHtmlfile : iframeUtils.createIframe;\n\n global[iframeUtils.WPrefix][this.id] = {\n start: function() {\n debug('start');\n self.iframeObj.loaded();\n }\n , message: function(data) {\n debug('message', data);\n self.emit('message', data);\n }\n , stop: function() {\n debug('stop');\n self._cleanup();\n self._close('network');\n }\n };\n this.iframeObj = constructFunc(url, function() {\n debug('callback');\n self._cleanup();\n self._close('permanent');\n });\n}\n\ninherits(HtmlfileReceiver, EventEmitter);\n\nHtmlfileReceiver.prototype.abort = function() {\n debug('abort');\n this._cleanup();\n this._close('user');\n};\n\nHtmlfileReceiver.prototype._cleanup = function() {\n debug('_cleanup');\n if (this.iframeObj) {\n this.iframeObj.cleanup();\n this.iframeObj = null;\n }\n delete global[iframeUtils.WPrefix][this.id];\n};\n\nHtmlfileReceiver.prototype._close = function(reason) {\n debug('_close', reason);\n this.emit('close', null, reason);\n this.removeAllListeners();\n};\n\nHtmlfileReceiver.htmlfileEnabled = false;\n\n// obfuscate to avoid firewalls\nvar axo = ['Active'].concat('Object').join('X');\nif (axo in global) {\n try {\n HtmlfileReceiver.htmlfileEnabled = !!new global[axo]('htmlfile');\n } catch (x) {\n // intentionally empty\n }\n}\n\nHtmlfileReceiver.enabled = HtmlfileReceiver.htmlfileEnabled || iframeUtils.iframeEnabled;\n\nmodule.exports = HtmlfileReceiver;\n","'use strict';\n\nvar utils = require('../../utils/iframe')\n , random = require('../../utils/random')\n , browser = require('../../utils/browser')\n , urlUtils = require('../../utils/url')\n , inherits = require('inherits')\n , EventEmitter = require('events').EventEmitter\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:receiver:jsonp');\n}\n\nfunction JsonpReceiver(url) {\n debug(url);\n var self = this;\n EventEmitter.call(this);\n\n utils.polluteGlobalNamespace();\n\n this.id = 'a' + random.string(6);\n var urlWithId = urlUtils.addQuery(url, 'c=' + encodeURIComponent(utils.WPrefix + '.' + this.id));\n\n global[utils.WPrefix][this.id] = this._callback.bind(this);\n this._createScript(urlWithId);\n\n // Fallback mostly for Konqueror - stupid timer, 35 seconds shall be plenty.\n this.timeoutId = setTimeout(function() {\n debug('timeout');\n self._abort(new Error('JSONP script loaded abnormally (timeout)'));\n }, JsonpReceiver.timeout);\n}\n\ninherits(JsonpReceiver, EventEmitter);\n\nJsonpReceiver.prototype.abort = function() {\n debug('abort');\n if (global[utils.WPrefix][this.id]) {\n var err = new Error('JSONP user aborted read');\n err.code = 1000;\n this._abort(err);\n }\n};\n\nJsonpReceiver.timeout = 35000;\nJsonpReceiver.scriptErrorTimeout = 1000;\n\nJsonpReceiver.prototype._callback = function(data) {\n debug('_callback', data);\n this._cleanup();\n\n if (this.aborting) {\n return;\n }\n\n if (data) {\n debug('message', data);\n this.emit('message', data);\n }\n this.emit('close', null, 'network');\n this.removeAllListeners();\n};\n\nJsonpReceiver.prototype._abort = function(err) {\n debug('_abort', err);\n this._cleanup();\n this.aborting = true;\n this.emit('close', err.code, err.message);\n this.removeAllListeners();\n};\n\nJsonpReceiver.prototype._cleanup = function() {\n debug('_cleanup');\n clearTimeout(this.timeoutId);\n if (this.script2) {\n this.script2.parentNode.removeChild(this.script2);\n this.script2 = null;\n }\n if (this.script) {\n var script = this.script;\n // Unfortunately, you can't really abort script loading of\n // the script.\n script.parentNode.removeChild(script);\n script.onreadystatechange = script.onerror =\n script.onload = script.onclick = null;\n this.script = null;\n }\n delete global[utils.WPrefix][this.id];\n};\n\nJsonpReceiver.prototype._scriptError = function() {\n debug('_scriptError');\n var self = this;\n if (this.errorTimer) {\n return;\n }\n\n this.errorTimer = setTimeout(function() {\n if (!self.loadedOkay) {\n self._abort(new Error('JSONP script loaded abnormally (onerror)'));\n }\n }, JsonpReceiver.scriptErrorTimeout);\n};\n\nJsonpReceiver.prototype._createScript = function(url) {\n debug('_createScript', url);\n var self = this;\n var script = this.script = global.document.createElement('script');\n var script2; // Opera synchronous load trick.\n\n script.id = 'a' + random.string(8);\n script.src = url;\n script.type = 'text/javascript';\n script.charset = 'UTF-8';\n script.onerror = this._scriptError.bind(this);\n script.onload = function() {\n debug('onload');\n self._abort(new Error('JSONP script loaded abnormally (onload)'));\n };\n\n // IE9 fires 'error' event after onreadystatechange or before, in random order.\n // Use loadedOkay to determine if actually errored\n script.onreadystatechange = function() {\n debug('onreadystatechange', script.readyState);\n if (/loaded|closed/.test(script.readyState)) {\n if (script && script.htmlFor && script.onclick) {\n self.loadedOkay = true;\n try {\n // In IE, actually execute the script.\n script.onclick();\n } catch (x) {\n // intentionally empty\n }\n }\n if (script) {\n self._abort(new Error('JSONP script loaded abnormally (onreadystatechange)'));\n }\n }\n };\n // IE: event/htmlFor/onclick trick.\n // One can't rely on proper order for onreadystatechange. In order to\n // make sure, set a 'htmlFor' and 'event' properties, so that\n // script code will be installed as 'onclick' handler for the\n // script object. Later, onreadystatechange, manually execute this\n // code. FF and Chrome doesn't work with 'event' and 'htmlFor'\n // set. For reference see:\n // http://jaubourg.net/2010/07/loading-script-as-onclick-handler-of.html\n // Also, read on that about script ordering:\n // http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order\n if (typeof script.async === 'undefined' && global.document.attachEvent) {\n // According to mozilla docs, in recent browsers script.async defaults\n // to 'true', so we may use it to detect a good browser:\n // https://developer.mozilla.org/en/HTML/Element/script\n if (!browser.isOpera()) {\n // Naively assume we're in IE\n try {\n script.htmlFor = script.id;\n script.event = 'onclick';\n } catch (x) {\n // intentionally empty\n }\n script.async = true;\n } else {\n // Opera, second sync script hack\n script2 = this.script2 = global.document.createElement('script');\n script2.text = \"try{var a = document.getElementById('\" + script.id + \"'); if(a)a.onerror();}catch(x){};\";\n script.async = script2.async = false;\n }\n }\n if (typeof script.async !== 'undefined') {\n script.async = true;\n }\n\n var head = global.document.getElementsByTagName('head')[0];\n head.insertBefore(script, head.firstChild);\n if (script2) {\n head.insertBefore(script2, head.firstChild);\n }\n};\n\nmodule.exports = JsonpReceiver;\n","'use strict';\n\nvar inherits = require('inherits')\n , EventEmitter = require('events').EventEmitter\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:receiver:xhr');\n}\n\nfunction XhrReceiver(url, AjaxObject) {\n debug(url);\n EventEmitter.call(this);\n var self = this;\n\n this.bufferPosition = 0;\n\n this.xo = new AjaxObject('POST', url, null);\n this.xo.on('chunk', this._chunkHandler.bind(this));\n this.xo.once('finish', function(status, text) {\n debug('finish', status, text);\n self._chunkHandler(status, text);\n self.xo = null;\n var reason = status === 200 ? 'network' : 'permanent';\n debug('close', reason);\n self.emit('close', null, reason);\n self._cleanup();\n });\n}\n\ninherits(XhrReceiver, EventEmitter);\n\nXhrReceiver.prototype._chunkHandler = function(status, text) {\n debug('_chunkHandler', status);\n if (status !== 200 || !text) {\n return;\n }\n\n for (var idx = -1; ; this.bufferPosition += idx + 1) {\n var buf = text.slice(this.bufferPosition);\n idx = buf.indexOf('\\n');\n if (idx === -1) {\n break;\n }\n var msg = buf.slice(0, idx);\n if (msg) {\n debug('message', msg);\n this.emit('message', msg);\n }\n }\n};\n\nXhrReceiver.prototype._cleanup = function() {\n debug('_cleanup');\n this.removeAllListeners();\n};\n\nXhrReceiver.prototype.abort = function() {\n debug('abort');\n if (this.xo) {\n this.xo.close();\n debug('close');\n this.emit('close', null, 'user');\n this.xo = null;\n }\n this._cleanup();\n};\n\nmodule.exports = XhrReceiver;\n","'use strict';\n\nvar random = require('../../utils/random')\n , urlUtils = require('../../utils/url')\n ;\n\nvar debug = function() {};\nif (process.env.NODE_ENV !== 'production') {\n debug = require('debug')('sockjs-client:sender:jsonp');\n}\n\nvar form, area;\n\nfunction createIframe(id) {\n debug('createIframe', id);\n try {\n // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n return global.document.createElement('