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

The Interactive Extensions for JavaScript

import { AsyncIterableX } from '../asynciterablex';
import { isAsyncIterable } from '../../util/isiterable';
export class FlattenAsyncIterable extends AsyncIterableX {
    constructor(source, depth) {
        super();
        this._source = source;
        this._depth = depth;
    }
    // eslint-disable-next-line consistent-return
    async *_flatten(source, depth) {
        if (depth === 0) {
            for await (const item of source) {
                yield item;
            }
            return undefined;
        }
        for await (const item of source) {
            if (isAsyncIterable(item)) {
                for await (const innerItem of this._flatten(item, depth - 1)) {
                    yield innerItem;
                }
            }
            else {
                yield item;
            }
        }
    }
    [Symbol.asyncIterator]() {
        return this._flatten(this._source, this._depth)[Symbol.asyncIterator]();
    }
}
export function flat(depth = Infinity) {
    return function flattenOperatorFunction(source) {
        return new FlattenAsyncIterable(source, depth);
    };
}

//# sourceMappingURL=flat.mjs.map