| 1 | {"version":3,"sources":["asynciterable/distinct.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,cAAc,EAAE,MAAM,kBAAkB,CAAC;AAClD,OAAO,EAAE,aAAa,EAAE,MAAM,sBAAsB,CAAC;AACrD,OAAO,EAAE,iBAAiB,EAAE,MAAM,0BAA0B,CAAC;AAC7D,OAAO,EAAE,aAAa,EAAE,MAAM,sBAAsB,CAAC;AAErD,MAAM,OAAO,qBAAqC,SAAQ,cAAuB;IAK/E,YACE,MAA8B,EAC9B,WAAqD,EACrD,QAA0D;QAE1D,KAAK,EAAE,CAAC;QACR,IAAI,CAAC,OAAO,GAAG,MAAM,CAAC;QACtB,IAAI,CAAC,YAAY,GAAG,WAAW,CAAC;QAChC,IAAI,CAAC,SAAS,GAAG,QAAQ,CAAC;IAC5B,CAAC;IAED,KAAK,CAAC,CAAC,CAAC,MAAM,CAAC,aAAa,CAAC;QAC3B,IAAI,GAAG,GAAG,EAAY,CAAC;QAEvB,IAAI,KAAK,EAAE,IAAI,IAAI,IAA4B,IAAI,CAAC,OAAO,EAAE;YAC3D,IAAI,GAAG,GAAG,MAAM,IAAI,CAAC,YAAY,CAAC,IAAI,CAAC,CAAC;YACxC,IAAI,CAAC,MAAM,iBAAiB,CAAC,GAAG,EAAE,GAAG,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC,KAAK,CAAC,CAAC,EAAE;gBAC9D,GAAG,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;gBACd,MAAM,IAAI,CAAC;aACZ;SACF;IACH,CAAC;CACF;AAED,MAAM,UAAU,QAAQ,CACtB,MAA8B,EAC9B,cAAwD,aAAa,EACrE,WAA6D,aAAa;IAE1E,OAAO,IAAI,qBAAqB,CAAgB,MAAM,EAAE,WAAW,EAAE,QAAQ,CAAC,CAAC;AACjF,CAAC","file":"distinct.js","sourcesContent":["import { AsyncIterableX } from './asynciterablex';\nimport { identityAsync } from '../internal/identity';\nimport { arrayIndexOfAsync } from '../internal/arrayindexof';\nimport { comparerAsync } from '../internal/comparer';\n\nexport class DistinctAsyncIterable<TSource, TKey> extends AsyncIterableX<TSource> {\n private _source: Iterable<TSource | PromiseLike<TSource>> | AsyncIterable<TSource>;\n private _keySelector: (value: TSource) => TKey | Promise<TKey>;\n private _comparer: (x: TKey, y: TKey) => boolean | Promise<boolean>;\n\n constructor(\n source: AsyncIterable<TSource>,\n keySelector: (value: TSource) => TKey | Promise<TKey>,\n comparer: (x: TKey, y: TKey) => boolean | Promise<boolean>\n ) {\n super();\n this._source = source;\n this._keySelector = keySelector;\n this._comparer = comparer;\n }\n\n async *[Symbol.asyncIterator]() {\n let set = [] as TKey[];\n\n for await (let item of <AsyncIterable<TSource>>this._source) {\n let key = await this._keySelector(item);\n if ((await arrayIndexOfAsync(set, key, this._comparer)) === -1) {\n set.push(key);\n yield item;\n }\n }\n }\n}\n\nexport function distinct<TSource, TKey>(\n source: AsyncIterable<TSource>,\n keySelector: (value: TSource) => TKey | Promise<TKey> = identityAsync,\n comparer: (x: TKey, y: TKey) => boolean | Promise<boolean> = comparerAsync\n): AsyncIterableX<TSource> {\n return new DistinctAsyncIterable<TSource, TKey>(source, keySelector, comparer);\n}\n"]} |