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rxjs

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Reactive Extensions for modern JavaScript

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import { isFunction } from '../util/isFunction'; import { operate } from '../util/lift'; import { OperatorSubscriber } from './OperatorSubscriber'; import { identity } from '../util/identity'; export function tap(observerOrNext, error, complete) { const tapObserver = isFunction(observerOrNext) || error || complete ? { next: observerOrNext, error, complete } : observerOrNext; return tapObserver ? operate((source, subscriber) => { source.subscribe(new OperatorSubscriber(subscriber, (value) => { var _a; (_a = tapObserver.next) === null || _a === void 0 ? void 0 : _a.call(tapObserver, value); subscriber.next(value); }, (err) => { var _a; (_a = tapObserver.error) === null || _a === void 0 ? void 0 : _a.call(tapObserver, err); subscriber.error(err); }, () => { var _a; (_a = tapObserver.complete) === null || _a === void 0 ? void 0 : _a.call(tapObserver); subscriber.complete(); })); }) : identity; } //# sourceMappingURL=tap.js.map