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authorPinapelz <yukais@pinapelz.com>2025-06-29 11:49:28 -0700
committerPinapelz <yukais@pinapelz.com>2025-06-29 11:49:28 -0700
commitd55b767039605256c736166a942a9138e3eacfd7 (patch)
tree947063b634c50d438a794325f13275e134aa5993 /node_modules/rxjs/src/internal/observable/throwError.ts
parent864ce67d89c77d8ef9c3361f80d619853abcf91c (diff)
remove dev node_modules (oops)
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-import { Observable } from '../Observable';
-import { Subscriber } from '../Subscriber';
-import { SchedulerLike } from '../types';
-import { isFunction } from '../util/isFunction';
-
-/**
- * Creates an observable that will create an error instance and push it to the consumer as an error
- * immediately upon subscription.
- *
- * <span class="informal">Just errors and does nothing else</span>
- *
- * ![](throw.png)
- *
- * This creation function is useful for creating an observable that will create an error and error every
- * time it is subscribed to. Generally, inside of most operators when you might want to return an errored
- * observable, this is unnecessary. In most cases, such as in the inner return of {@link concatMap},
- * {@link mergeMap}, {@link defer}, and many others, you can simply throw the error, and RxJS will pick
- * that up and notify the consumer of the error.
- *
- * ## Example
- *
- * Create a simple observable that will create a new error with a timestamp and log it
- * and the message every time you subscribe to it
- *
- * ```ts
- * import { throwError } from 'rxjs';
- *
- * let errorCount = 0;
- *
- * const errorWithTimestamp$ = throwError(() => {
- * const error: any = new Error(`This is error number ${ ++errorCount }`);
- * error.timestamp = Date.now();
- * return error;
- * });
- *
- * errorWithTimestamp$.subscribe({
- * error: err => console.log(err.timestamp, err.message)
- * });
- *
- * errorWithTimestamp$.subscribe({
- * error: err => console.log(err.timestamp, err.message)
- * });
- *
- * // Logs the timestamp and a new error message for each subscription
- * ```
- *
- * ### Unnecessary usage
- *
- * Using `throwError` inside of an operator or creation function
- * with a callback, is usually not necessary
- *
- * ```ts
- * import { of, concatMap, timer, throwError } from 'rxjs';
- *
- * const delays$ = of(1000, 2000, Infinity, 3000);
- *
- * delays$.pipe(
- * concatMap(ms => {
- * if (ms < 10000) {
- * return timer(ms);
- * } else {
- * // This is probably overkill.
- * return throwError(() => new Error(`Invalid time ${ ms }`));
- * }
- * })
- * )
- * .subscribe({
- * next: console.log,
- * error: console.error
- * });
- * ```
- *
- * You can just throw the error instead
- *
- * ```ts
- * import { of, concatMap, timer } from 'rxjs';
- *
- * const delays$ = of(1000, 2000, Infinity, 3000);
- *
- * delays$.pipe(
- * concatMap(ms => {
- * if (ms < 10000) {
- * return timer(ms);
- * } else {
- * // Cleaner and easier to read for most folks.
- * throw new Error(`Invalid time ${ ms }`);
- * }
- * })
- * )
- * .subscribe({
- * next: console.log,
- * error: console.error
- * });
- * ```
- *
- * @param errorFactory A factory function that will create the error instance that is pushed.
- */
-export function throwError(errorFactory: () => any): Observable<never>;
-
-/**
- * Returns an observable that will error with the specified error immediately upon subscription.
- *
- * @param error The error instance to emit
- * @deprecated Support for passing an error value will be removed in v8. Instead, pass a factory function to `throwError(() => new Error('test'))`. This is
- * because it will create the error at the moment it should be created and capture a more appropriate stack trace. If
- * for some reason you need to create the error ahead of time, you can still do that: `const err = new Error('test'); throwError(() => err);`.
- */
-export function throwError(error: any): Observable<never>;
-
-/**
- * Notifies the consumer of an error using a given scheduler by scheduling it at delay `0` upon subscription.
- *
- * @param errorOrErrorFactory An error instance or error factory
- * @param scheduler A scheduler to use to schedule the error notification
- * @deprecated The `scheduler` parameter will be removed in v8.
- * Use `throwError` in combination with {@link observeOn}: `throwError(() => new Error('test')).pipe(observeOn(scheduler));`.
- * Details: https://rxjs.dev/deprecations/scheduler-argument
- */
-export function throwError(errorOrErrorFactory: any, scheduler: SchedulerLike): Observable<never>;
-
-export function throwError(errorOrErrorFactory: any, scheduler?: SchedulerLike): Observable<never> {
- const errorFactory = isFunction(errorOrErrorFactory) ? errorOrErrorFactory : () => errorOrErrorFactory;
- const init = (subscriber: Subscriber<never>) => subscriber.error(errorFactory());
- return new Observable(scheduler ? (subscriber) => scheduler.schedule(init as any, 0, subscriber) : init);
-}
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