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

The Interactive Extensions for JavaScript

import { AsyncIterableX } from '../asynciterablex';
import { toObserver } from '../../util/toobserver';
export class TapAsyncIterable extends AsyncIterableX {
    constructor(source, observer) {
        super();
        this._source = source;
        this._observer = observer;
    }
    async *[Symbol.asyncIterator]() {
        const it = this._source[Symbol.asyncIterator]();
        while (1) {
            let next;
            try {
                next = await it.next();
            }
            catch (e) {
                if (this._observer.error) {
                    await this._observer.error(e);
                }
                throw e;
            }
            if (next.done) {
                if (this._observer.complete) {
                    await this._observer.complete();
                }
                break;
            }
            if (this._observer.next) {
                await this._observer.next(next.value);
            }
            yield next.value;
        }
    }
}
export function tap(observerOrNext, error, complete) {
    return function tapOperatorFunction(source) {
        return new TapAsyncIterable(source, toObserver(observerOrNext, error, complete));
    };
}

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