@ng-doc/app/fesm2022/ng-doc-app-classes-default-search-engine.mjs.map

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{"version":3,"file":"ng-doc-app-classes-default-search-engine.mjs","sources":["../../../../libs/app/classes/default-search-engine/default-search-engine.ts","../../../../libs/app/classes/default-search-engine/ng-doc-app-classes-default-search-engine.ts"],"sourcesContent":["import { NgDocSearchEngine } from '@ng-doc/app/classes/search-engine';\nimport { NgDocSearchResult } from '@ng-doc/app/interfaces';\nimport { asArray } from '@ng-doc/core/helpers/as-array';\nimport { objectKeys } from '@ng-doc/core/helpers/object-keys';\nimport { NgDocPageIndex } from '@ng-doc/core/interfaces';\nimport { NgDocHighlightPosition } from '@ng-doc/ui-kit';\nimport { create, insertMultiple, Orama } from '@orama/orama';\nimport {\n  afterInsert,\n  OramaWithHighlight,\n  searchWithHighlight,\n} from '@orama/plugin-match-highlight';\nimport * as stemmer from '@orama/stemmers';\nimport { from, Observable } from 'rxjs';\nimport { map, shareReplay, switchMap } from 'rxjs/operators';\n\ntype OramaDb = OramaWithHighlight<\n  Orama<{\n    title: 'string';\n    section: 'string';\n    content: 'string';\n  }>\n>;\n\n/**\n * Options for the `NgDocDefaultSearchEngine`.\n */\nexport interface NgDocDefaultSearchEngineOptions {\n  /**\n   * The language to use for the search engine.\n   */\n  stemmer?: typeof stemmer.stemmer;\n  /**\n   * Specifies the maximum distance (following the Levenshtein algorithm) between the term and the searchable property.\n   * (doesn't work with `exact` option)\n   */\n  tolerance?: number;\n  /**\n   * If `true`, finds all the document with an exact match of the term property.\n   */\n  exact?: boolean;\n  /**\n   * Number of results to return (default: 10).\n   */\n  limit?: number;\n}\n\n/**\n * Search engine for the documentation, it loads the index and provides a search method.\n */\nexport class NgDocDefaultSearchEngine extends NgDocSearchEngine {\n  private db$: Observable<OramaDb>;\n\n  constructor(private options?: NgDocDefaultSearchEngineOptions) {\n    super();\n\n    this.db$ = from(\n      create({\n        schema: {\n          title: 'string',\n          section: 'string',\n          content: 'string',\n        },\n        plugins: [\n          {\n            name: 'highlight',\n            afterInsert,\n          },\n        ],\n        components: {\n          tokenizer: {\n            stemmer: options?.stemmer,\n          },\n        },\n      }),\n    ).pipe(\n      switchMap((db) =>\n        this.request<NgDocPageIndex[]>(`assets/ng-doc/indexes.json`).pipe(\n          switchMap((pages: NgDocPageIndex[]) => insertMultiple(db, pages as any)),\n          map(() => db as unknown as OramaDb),\n        ),\n      ),\n      shareReplay(1),\n    ) as Observable<OramaDb>;\n  }\n\n  /**\n   * Search the documentation for the given query.\n   * @param query The query to search for.\n   */\n  search(query: string): Observable<NgDocSearchResult[]> {\n    return this.db$.pipe(\n      switchMap((db) =>\n        searchWithHighlight(db, {\n          term: query,\n          boost: { title: 4, section: 2 },\n          threshold: 0.3,\n          properties: ['title', 'section', 'content'],\n          tolerance: this.options?.tolerance,\n          exact: this.options?.exact,\n          limit: this.options?.limit ?? 10,\n        }),\n      ),\n      map((result) =>\n        result.hits.map((hit) => {\n          const keys: Array<keyof NgDocPageIndex> = objectKeys(hit.positions) as unknown as Array<\n            keyof NgDocPageIndex\n          >;\n\n          return {\n            index: hit.document as unknown as NgDocPageIndex,\n            positions: keys.reduce(\n              (\n                acc: Record<keyof NgDocPageIndex, NgDocHighlightPosition[]>,\n                key: keyof NgDocPageIndex,\n              ) => {\n                // eslint-disable-next-line @typescript-eslint/ban-ts-comment\n                // @ts-ignore\n                acc[key] = [...asArray(acc[key]), ...Object.values(hit.positions[key]).flat()];\n\n                return acc;\n              },\n              {} as any,\n            ) as Partial<Record<keyof NgDocPageIndex, NgDocHighlightPosition[]>>,\n          };\n        }),\n      ),\n    );\n  }\n\n  private request<T>(url: string): Observable<T> {\n    return from(fetch(url)).pipe(switchMap((response: Response) => response.json() as Promise<T>));\n  }\n}\n","/**\n * Generated bundle index. 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