+++ /dev/null
-import { Observable } from '../Observable';
-import { AsyncSubject } from '../AsyncSubject';
-import { Subscriber } from '../Subscriber';
-import { SchedulerAction, SchedulerLike } from '../types';
-import { map } from '../operators/map';
-import { canReportError } from '../util/canReportError';
-import { isScheduler } from '../util/isScheduler';
-import { isArray } from '../util/isArray';
-
-/* tslint:disable:max-line-length */
-/** @deprecated resultSelector is deprecated, pipe to map instead */
-export function bindNodeCallback(callbackFunc: Function, resultSelector: Function, scheduler?: SchedulerLike): (...args: any[]) => Observable<any>;
-
-export function bindNodeCallback<R1, R2, R3, R4>(callbackFunc: (callback: (err: any, res1: R1, res2: R2, res3: R3, res4: R4, ...args: any[]) => any) => any, scheduler?: SchedulerLike): (...args: any[]) => Observable<any[]>;
-export function bindNodeCallback<R1, R2, R3>(callbackFunc: (callback: (err: any, res1: R1, res2: R2, res3: R3) => any) => any, scheduler?: SchedulerLike): () => Observable<[R1, R2, R3]>;
-export function bindNodeCallback<R1, R2>(callbackFunc: (callback: (err: any, res1: R1, res2: R2) => any) => any, scheduler?: SchedulerLike): () => Observable<[R1, R2]>;
-export function bindNodeCallback<R1>(callbackFunc: (callback: (err: any, res1: R1) => any) => any, scheduler?: SchedulerLike): () => Observable<R1>;
-export function bindNodeCallback(callbackFunc: (callback: (err: any) => any) => any, scheduler?: SchedulerLike): () => Observable<void>;
-
-export function bindNodeCallback<A1, R1, R2, R3, R4>(callbackFunc: (arg1: A1, callback: (err: any, res1: R1, res2: R2, res3: R3, res4: R4, ...args: any[]) => any) => any, scheduler?: SchedulerLike): (...args: any[]) => Observable<any[]>;
-export function bindNodeCallback<A1, R1, R2, R3>(callbackFunc: (arg1: A1, callback: (err: any, res1: R1, res2: R2, res3: R3) => any) => any, scheduler?: SchedulerLike): (arg1: A1) => Observable<[R1, R2, R3]>;
-export function bindNodeCallback<A1, R1, R2>(callbackFunc: (arg1: A1, callback: (err: any, res1: R1, res2: R2) => any) => any, scheduler?: SchedulerLike): (arg1: A1) => Observable<[R1, R2]>;
-export function bindNodeCallback<A1, R1>(callbackFunc: (arg1: A1, callback: (err: any, res1: R1) => any) => any, scheduler?: SchedulerLike): (arg1: A1) => Observable<R1>;
-export function bindNodeCallback<A1>(callbackFunc: (arg1: A1, callback: (err: any) => any) => any, scheduler?: SchedulerLike): (arg1: A1) => Observable<void>;
-
-export function bindNodeCallback<A1, A2, R1, R2, R3, R4>(callbackFunc: (arg1: A1, arg2: A2, callback: (err: any, res1: R1, res2: R2, res3: R3, res4: R4, ...args: any[]) => any) => any, scheduler?: SchedulerLike): (...args: any[]) => Observable<any[]>;
-export function bindNodeCallback<A1, A2, R1, R2, R3>(callbackFunc: (arg1: A1, arg2: A2, callback: (err: any, res1: R1, res2: R2, res3: R3) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2) => Observable<[R1, R2, R3]>;
-export function bindNodeCallback<A1, A2, R1, R2>(callbackFunc: (arg1: A1, arg2: A2, callback: (err: any, res1: R1, res2: R2) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2) => Observable<[R1, R2]>;
-export function bindNodeCallback<A1, A2, R1>(callbackFunc: (arg1: A1, arg2: A2, callback: (err: any, res1: R1) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2) => Observable<R1>;
-export function bindNodeCallback<A1, A2>(callbackFunc: (arg1: A1, arg2: A2, callback: (err: any) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2) => Observable<void>;
-
-export function bindNodeCallback<A1, A2, A3, R1, R2, R3, R4>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, callback: (err: any, res1: R1, res2: R2, res3: R3, res4: R4, ...args: any[]) => any) => any, scheduler?: SchedulerLike): (...args: any[]) => Observable<any[]>;
-export function bindNodeCallback<A1, A2, A3, R1, R2, R3>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, callback: (err: any, res1: R1, res2: R2, res3: R3) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3) => Observable<[R1, R2, R3]>;
-export function bindNodeCallback<A1, A2, A3, R1, R2>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, callback: (err: any, res1: R1, res2: R2) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3) => Observable<[R1, R2]>;
-export function bindNodeCallback<A1, A2, A3, R1>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, callback: (err: any, res1: R1) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3) => Observable<R1>;
-export function bindNodeCallback<A1, A2, A3>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, callback: (err: any) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3) => Observable<void>;
-
-export function bindNodeCallback<A1, A2, A3, A4, R1, R2, R3, R4>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, callback: (err: any, res1: R1, res2: R2, res3: R3, res4: R4, ...args: any[]) => any) => any, scheduler?: SchedulerLike): (...args: any[]) => Observable<any[]>;
-export function bindNodeCallback<A1, A2, A3, A4, R1, R2, R3>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, callback: (err: any, res1: R1, res2: R2, res3: R3) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3, arg4: A4) => Observable<[R1, R2, R3]>;
-export function bindNodeCallback<A1, A2, A3, A4, R1, R2>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, callback: (err: any, res1: R1, res2: R2) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3, arg4: A4) => Observable<[R1, R2]>;
-export function bindNodeCallback<A1, A2, A3, A4, R1>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, callback: (err: any, res1: R1) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3, arg4: A4) => Observable<R1>;
-export function bindNodeCallback<A1, A2, A3, A4>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, callback: (err: any) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3, arg4: A4) => Observable<void>;
-
-export function bindNodeCallback<A1, A2, A3, A4, A5, R1, R2, R3, R4>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, arg5: A5, callback: (err: any, res1: R1, res2: R2, res3: R3, res4: R4, ...args: any[]) => any) => any, scheduler?: SchedulerLike): (...args: any[]) => Observable<any[]>;
-export function bindNodeCallback<A1, A2, A3, A4, A5, R1, R2, R3>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, arg5: A5, callback: (err: any, res1: R1, res2: R2, res3: R3) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3, arg4: A4, arg5: A5) => Observable<[R1, R2, R3]>;
-export function bindNodeCallback<A1, A2, A3, A4, A5, R1, R2>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, arg5: A5, callback: (err: any, res1: R1, res2: R2) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3, arg4: A4, arg5: A5) => Observable<[R1, R2]>;
-export function bindNodeCallback<A1, A2, A3, A4, A5, R1>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, arg5: A5, callback: (err: any, res1: R1) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3, arg4: A4, arg5: A5) => Observable<R1>;
-export function bindNodeCallback<A1, A2, A3, A4, A5>(callbackFunc: (arg1: A1, arg2: A2, arg3: A3, arg4: A4, arg5: A5, callback: (err: any) => any) => any, scheduler?: SchedulerLike): (arg1: A1, arg2: A2, arg3: A3, arg4: A4, arg5: A5) => Observable<void>; /* tslint:enable:max-line-length */
-
-export function bindNodeCallback(callbackFunc: Function, scheduler?: SchedulerLike): (...args: any[]) => Observable<any[]>;
-/**
- * Converts a Node.js-style callback API to a function that returns an
- * Observable.
- *
- * <span class="informal">It's just like {@link bindCallback}, but the
- * callback is expected to be of type `callback(error, result)`.</span>
- *
- * `bindNodeCallback` is not an operator because its input and output are not
- * Observables. The input is a function `func` with some parameters, but the
- * last parameter must be a callback function that `func` calls when it is
- * done. The callback function is expected to follow Node.js conventions,
- * where the first argument to the callback is an error object, signaling
- * whether call was successful. If that object is passed to callback, it means
- * something went wrong.
- *
- * The output of `bindNodeCallback` is a function that takes the same
- * parameters as `func`, except the last one (the callback). When the output
- * function is called with arguments, it will return an Observable.
- * If `func` calls its callback with error parameter present, Observable will
- * error with that value as well. If error parameter is not passed, Observable will emit
- * second parameter. If there are more parameters (third and so on),
- * Observable will emit an array with all arguments, except first error argument.
- *
- * Note that `func` will not be called at the same time output function is,
- * but rather whenever resulting Observable is subscribed. By default call to
- * `func` will happen synchronously after subscription, but that can be changed
- * with proper `scheduler` provided as optional third parameter. {@link SchedulerLike}
- * can also control when values from callback will be emitted by Observable.
- * To find out more, check out documentation for {@link bindCallback}, where
- * {@link SchedulerLike} works exactly the same.
- *
- * As in {@link bindCallback}, context (`this` property) of input function will be set to context
- * of returned function, when it is called.
- *
- * After Observable emits value, it will complete immediately. This means
- * even if `func` calls callback again, values from second and consecutive
- * calls will never appear on the stream. If you need to handle functions
- * that call callbacks multiple times, check out {@link fromEvent} or
- * {@link fromEventPattern} instead.
- *
- * Note that `bindNodeCallback` can be used in non-Node.js environments as well.
- * "Node.js-style" callbacks are just a convention, so if you write for
- * browsers or any other environment and API you use implements that callback style,
- * `bindNodeCallback` can be safely used on that API functions as well.
- *
- * Remember that Error object passed to callback does not have to be an instance
- * of JavaScript built-in `Error` object. In fact, it does not even have to an object.
- * Error parameter of callback function is interpreted as "present", when value
- * of that parameter is truthy. It could be, for example, non-zero number, non-empty
- * string or boolean `true`. In all of these cases resulting Observable would error
- * with that value. This means usually regular style callbacks will fail very often when
- * `bindNodeCallback` is used. If your Observable errors much more often then you
- * would expect, check if callback really is called in Node.js-style and, if not,
- * switch to {@link bindCallback} instead.
- *
- * Note that even if error parameter is technically present in callback, but its value
- * is falsy, it still won't appear in array emitted by Observable.
- *
- * ## Examples
- * ### Read a file from the filesystem and get the data as an Observable
- * ```ts
- * import * as fs from 'fs';
- * const readFileAsObservable = bindNodeCallback(fs.readFile);
- * const result = readFileAsObservable('./roadNames.txt', 'utf8');
- * result.subscribe(x => console.log(x), e => console.error(e));
- * ```
- *
- * ### Use on function calling callback with multiple arguments
- * ```ts
- * someFunction((err, a, b) => {
- * console.log(err); // null
- * console.log(a); // 5
- * console.log(b); // "some string"
- * });
- * const boundSomeFunction = bindNodeCallback(someFunction);
- * boundSomeFunction()
- * .subscribe(value => {
- * console.log(value); // [5, "some string"]
- * });
- * ```
- *
- * ### Use on function calling callback in regular style
- * ```ts
- * someFunction(a => {
- * console.log(a); // 5
- * });
- * const boundSomeFunction = bindNodeCallback(someFunction);
- * boundSomeFunction()
- * .subscribe(
- * value => {} // never gets called
- * err => console.log(err) // 5
- * );
- * ```
- *
- * @see {@link bindCallback}
- * @see {@link from}
- *
- * @param {function} func Function with a Node.js-style callback as the last parameter.
- * @param {SchedulerLike} [scheduler] The scheduler on which to schedule the
- * callbacks.
- * @return {function(...params: *): Observable} A function which returns the
- * Observable that delivers the same values the Node.js callback would
- * deliver.
- * @name bindNodeCallback
- */
-export function bindNodeCallback<T>(
- callbackFunc: Function,
- resultSelector: Function|SchedulerLike,
- scheduler?: SchedulerLike
-): (...args: any[]) => Observable<T> {
-
- if (resultSelector) {
- if (isScheduler(resultSelector)) {
- scheduler = resultSelector;
- } else {
- // DEPRECATED PATH
- return (...args: any[]) => bindNodeCallback(callbackFunc, scheduler)(...args).pipe(
- map(args => isArray(args) ? resultSelector(...args) : resultSelector(args))
- );
- }
- }
-
- return function(this: any, ...args: any[]): Observable<T> {
- const params: ParamsState<T> = {
- subject: undefined,
- args,
- callbackFunc,
- scheduler,
- context: this,
- };
- return new Observable<T>(subscriber => {
- const { context } = params;
- let { subject } = params;
- if (!scheduler) {
- if (!subject) {
- subject = params.subject = new AsyncSubject<T>();
- const handler = (...innerArgs: any[]) => {
- const err = innerArgs.shift();
-
- if (err) {
- subject.error(err);
- return;
- }
-
- subject.next(innerArgs.length <= 1 ? innerArgs[0] : innerArgs);
- subject.complete();
- };
-
- try {
- callbackFunc.apply(context, [...args, handler]);
- } catch (err) {
- if (canReportError(subject)) {
- subject.error(err);
- } else {
- console.warn(err);
- }
- }
- }
- return subject.subscribe(subscriber);
- } else {
- return scheduler.schedule<DispatchState<T>>(dispatch, 0, { params, subscriber, context });
- }
- });
- };
-}
-
-interface DispatchState<T> {
- subscriber: Subscriber<T>;
- context: any;
- params: ParamsState<T>;
-}
-
-interface ParamsState<T> {
- callbackFunc: Function;
- args: any[];
- scheduler: SchedulerLike;
- subject: AsyncSubject<T>;
- context: any;
-}
-
-function dispatch<T>(this: SchedulerAction<DispatchState<T>>, state: DispatchState<T>) {
- const { params, subscriber, context } = state;
- const { callbackFunc, args, scheduler } = params;
- let subject = params.subject;
-
- if (!subject) {
- subject = params.subject = new AsyncSubject<T>();
-
- const handler = (...innerArgs: any[]) => {
- const err = innerArgs.shift();
- if (err) {
- this.add(scheduler.schedule<DispatchErrorArg<T>>(dispatchError, 0, { err, subject }));
- } else {
- const value = innerArgs.length <= 1 ? innerArgs[0] : innerArgs;
- this.add(scheduler.schedule<DispatchNextArg<T>>(dispatchNext, 0, { value, subject }));
- }
- };
-
- try {
- callbackFunc.apply(context, [...args, handler]);
- } catch (err) {
- this.add(scheduler.schedule<DispatchErrorArg<T>>(dispatchError, 0, { err, subject }));
- }
- }
-
- this.add(subject.subscribe(subscriber));
-}
-
-interface DispatchNextArg<T> {
- subject: AsyncSubject<T>;
- value: T;
-}
-
-function dispatchNext<T>(arg: DispatchNextArg<T>) {
- const { value, subject } = arg;
- subject.next(value);
- subject.complete();
-}
-
-interface DispatchErrorArg<T> {
- subject: AsyncSubject<T>;
- err: any;
-}
-
-function dispatchError<T>(arg: DispatchErrorArg<T>) {
- const { err, subject } = arg;
- subject.error(err);
-}
projects / dotfiles / .git / blobdiff