@reactivex/ix-esnext-esm/asynciterable/operators/flatmap.js

The Interactive Extensions for JavaScript

import { AsyncIterableX } from '../asynciterablex';
import { bindCallback } from '../../util/bindcallback';
export class FlatMapAsyncIterable extends AsyncIterableX {
    constructor(source, selector) {
        super();
        this._source = source;
        this._selector = selector;
    }
    async *[Symbol.asyncIterator]() {
        for await (const outer of this._source) {
            const inners = await this._selector(outer);
            for await (const inner of inners) {
                yield inner;
            }
        }
    }
}
export function flatMap(selector, thisArg) {
    return function flatMapOperatorFunction(source) {
        return new FlatMapAsyncIterable(source, bindCallback(selector, thisArg, 1));
    };
}

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