@reactivex/ix-esnext-esm/asynciterable/operators/distinctuntilchanged.mjs.map

The Interactive Extensions for JavaScript

{"version":3,"sources":["asynciterable/operators/distinctuntilchanged.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,cAAc,EAAE,MAAM,mBAAmB,CAAC;AACnD,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AACpD,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AAEpD,OAAO,EAAE,aAAa,EAAE,MAAM,aAAa,CAAC;AAC5C,OAAO,EAAE,cAAc,EAAE,MAAM,kBAAkB,CAAC;AAGlD,MAAM,OAAO,iCAA2D,SAAQ,cAE/E;IAKC,YACE,MAA8B,EAC9B,WAA2E,EAC3E,QAAmE;QAEnE,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,CAAC,MAAoB;QAChD,cAAc,CAAC,MAAM,CAAC,CAAC;QACvB,IAAI,UAA4B,CAAC;QACjC,IAAI,aAAa,GAAG,KAAK,CAAC;QAC1B,IAAI,KAAK,EAAE,MAAM,IAAI,IAAI,aAAa,CAAC,IAAI,CAAC,OAAO,EAAE,MAAM,CAAC,EAAE;YAC5D,MAAM,GAAG,GAAG,MAAM,IAAI,CAAC,YAAY,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC;YAClD,IAAI,cAAc,GAAG,KAAK,CAAC;YAC3B,IAAI,aAAa,EAAE;gBACjB,cAAc,GAAG,MAAM,IAAI,CAAC,SAAS,CAAC,UAAW,EAAE,GAAG,CAAC,CAAC;aACzD;YACD,IAAI,CAAC,aAAa,IAAI,CAAC,cAAc,EAAE;gBACrC,aAAa,GAAG,IAAI,CAAC;gBACrB,UAAU,GAAG,GAAG,CAAC;gBACjB,MAAM,IAAI,CAAC;aACZ;SACF;IACH,CAAC;CACF;AAED;;;;;;;;GAQG;AACH,MAAM,UAAU,oBAAoB,CAClC,OAAwC;IAExC,OAAO,SAAS,oCAAoC,CAClD,MAA8B;QAE9B,MAAM,EAAE,CAAC,aAAa,CAAC,EAAE,WAAW,GAAG,aAAa,EAAE,CAAC,UAAU,CAAC,EAAE,QAAQ,GAAG,aAAa,EAAE,GAC5F,OAAO,IAAI,EAAE,CAAC;QAChB,OAAO,IAAI,iCAAiC,CAAgB,MAAM,EAAE,WAAW,EAAE,QAAQ,CAAC,CAAC;IAC7F,CAAC,CAAC;AACJ,CAAC","file":"distinctuntilchanged.js","sourcesContent":["import { AsyncIterableX } from '../asynciterablex';\nimport { identityAsync } from '../../util/identity';\nimport { comparerAsync } from '../../util/comparer';\nimport { MonoTypeOperatorAsyncFunction } from '../../interfaces';\nimport { wrapWithAbort } from './withabort';\nimport { throwIfAborted } from '../../aborterror';\nimport { DistinctOptions } from './distinctoptions';\n\nexport class DistinctUntilChangedAsyncIterable<TSource, TKey = TSource> extends AsyncIterableX<\nTSource\n> {\n  private _source: AsyncIterable<TSource>;\n  private _keySelector: (value: TSource, signal?: AbortSignal) => TKey | Promise<TKey>;\n  private _comparer: (x: TKey, y: TKey) => boolean | Promise<boolean>;\n\n  constructor(\n    source: AsyncIterable<TSource>,\n    keySelector: (value: TSource, signal?: AbortSignal) => TKey | Promise<TKey>,\n    comparer: (first: TKey, second: 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](signal?: AbortSignal) {\n    throwIfAborted(signal);\n    let currentKey: TKey | undefined;\n    let hasCurrentKey = false;\n    for await (const item of wrapWithAbort(this._source, signal)) {\n      const key = await this._keySelector(item, signal);\n      let comparerEquals = false;\n      if (hasCurrentKey) {\n        comparerEquals = await this._comparer(currentKey!, key);\n      }\n      if (!hasCurrentKey || !comparerEquals) {\n        hasCurrentKey = true;\n        currentKey = key;\n        yield item;\n      }\n    }\n  }\n}\n\n/**\n * Returns an async-iterable sequence that contains only distinct contiguous elements according to the optional keySelector and comparer.\n *\n * @export\n * @template TSource The type of the elements in the source sequence.\n * @template TKey The type of the discriminator key computed for each element in the source sequence.\n * @param {DistinctOptions<TSource, TKey = TSource>} [options] The optional options for adding a key selector and comparer.\n * @returns {MonoTypeOperatorAsyncFunction<TSource>} An operator that returns an async-iterable that contains only distinct contiguous items.\n */\nexport function distinctUntilChanged<TSource, TKey = TSource>(\n  options?: DistinctOptions<TSource, TKey>\n): MonoTypeOperatorAsyncFunction<TSource> {\n  return function distinctUntilChangedOperatorFunction(\n    source: AsyncIterable<TSource>\n  ): AsyncIterableX<TSource> {\n    const { ['keySelector']: keySelector = identityAsync, ['comparer']: comparer = comparerAsync } =\n      options || {};\n    return new DistinctUntilChangedAsyncIterable<TSource, TKey>(source, keySelector, comparer);\n  };\n}\n"]}