| 1 | import { AsyncIterableX } from './asynciterablex';
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| 2 | import { arrayIndexOfAsync } from '../internal/arrayindexof';
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| 3 | import { comparerAsync } from '../internal/comparer';
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| 4 | export class UnionAsyncIterable extends AsyncIterableX {
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| 5 | constructor(left, right, comparer) {
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| 6 | super();
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| 7 | this._left = left;
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| 8 | this._right = right;
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| 9 | this._comparer = comparer;
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| 10 | }
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| 11 | async *[Symbol.asyncIterator]() {
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| 12 | let map = [];
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| 13 | for await (let lItem of this._left) {
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| 14 | if ((await arrayIndexOfAsync(map, lItem, this._comparer)) === -1) {
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| 15 | map.push(lItem);
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| 16 | yield lItem;
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| 17 | }
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| 18 | }
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| 19 | for await (let rItem of this._right) {
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| 20 | if ((await arrayIndexOfAsync(map, rItem, this._comparer)) === -1) {
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| 21 | map.push(rItem);
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| 22 | yield rItem;
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| 23 | }
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| 24 | }
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| 25 | }
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| 26 | }
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| 27 | export function union(left, right, comparer = comparerAsync) {
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| 28 | return new UnionAsyncIterable(left, right, comparer);
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| 29 | }
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| 30 |
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| 31 |
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