API Reference

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API Reference / @dasch-ng/rxjs-operators / debug

Function: debug()

debug<T>(label?): (source) => Observable<T>

Defined in: debug-operator.ts:26

A debugging operator that logs all notifications (next, error, complete) from an observable stream. Useful for development and troubleshooting.

Type Parameters

T

T

The type of values emitted by the source observable

Parameters

label?

string

Optional string label to identify the stream in console output

Returns

An operator function that logs all notifications and passes them through unchanged

(source) => Observable<T>

Example

import { of } from 'rxjs';
import { debug } from '@dasch-ng/rxjs-operators';

of(1, 2, 3)
  .pipe(debug('my-stream'))
  .subscribe();
// Console output (RxJS Notification objects):
// my-stream Notification { kind: 'N', value: 1, error: undefined, hasValue: true }
// my-stream Notification { kind: 'N', value: 2, error: undefined, hasValue: true }
// my-stream Notification { kind: 'N', value: 3, error: undefined, hasValue: true }
// my-stream Notification { kind: 'C', value: undefined, error: undefined, hasValue: false }