199 lines
7.2 KiB
Haxe
199 lines
7.2 KiB
Haxe
package node.stream;
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@:jsRequire("stream", "Stream") extern class Stream extends node.Stream {
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function new(?opts:ReadableOptions);
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/**
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Alias for `emitter.on(eventName, listener)`.
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**/
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function addListener(eventName:ts.AnyOf2<String, js.lib.Symbol>, listener:(args:haxe.extern.Rest<Dynamic>) -> Void):Stream;
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/**
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Adds the `listener` function to the end of the listeners array for the
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event named `eventName`. No checks are made to see if the `listener` has
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already been added. Multiple calls passing the same combination of `eventName`and `listener` will result in the `listener` being added, and called, multiple
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times.
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```js
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server.on('connection', (stream) => {
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console.log('someone connected!');
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});
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```
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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By default, event listeners are invoked in the order they are added. The`emitter.prependListener()` method can be used as an alternative to add the
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event listener to the beginning of the listeners array.
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```js
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import { EventEmitter } from 'node:events';
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const myEE = new EventEmitter();
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myEE.on('foo', () => console.log('a'));
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myEE.prependListener('foo', () => console.log('b'));
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myEE.emit('foo');
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// Prints:
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// b
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// a
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```
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**/
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function on(eventName:ts.AnyOf2<String, js.lib.Symbol>, listener:(args:haxe.extern.Rest<Dynamic>) -> Void):Stream;
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/**
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Adds a **one-time**`listener` function for the event named `eventName`. The
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next time `eventName` is triggered, this listener is removed and then invoked.
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```js
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server.once('connection', (stream) => {
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console.log('Ah, we have our first user!');
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});
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```
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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By default, event listeners are invoked in the order they are added. The`emitter.prependOnceListener()` method can be used as an alternative to add the
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event listener to the beginning of the listeners array.
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```js
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import { EventEmitter } from 'node:events';
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const myEE = new EventEmitter();
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myEE.once('foo', () => console.log('a'));
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myEE.prependOnceListener('foo', () => console.log('b'));
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myEE.emit('foo');
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// Prints:
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// b
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// a
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```
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**/
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function once(eventName:ts.AnyOf2<String, js.lib.Symbol>, listener:(args:haxe.extern.Rest<Dynamic>) -> Void):Stream;
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/**
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Removes the specified `listener` from the listener array for the event named`eventName`.
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```js
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const callback = (stream) => {
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console.log('someone connected!');
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};
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server.on('connection', callback);
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// ...
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server.removeListener('connection', callback);
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```
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`removeListener()` will remove, at most, one instance of a listener from the
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listener array. If any single listener has been added multiple times to the
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listener array for the specified `eventName`, then `removeListener()` must be
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called multiple times to remove each instance.
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Once an event is emitted, all listeners attached to it at the
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time of emitting are called in order. This implies that any`removeListener()` or `removeAllListeners()` calls _after_ emitting and _before_ the last listener finishes execution
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will not remove them from`emit()` in progress. Subsequent events behave as expected.
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```js
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import { EventEmitter } from 'node:events';
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class MyEmitter extends EventEmitter {}
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const myEmitter = new MyEmitter();
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const callbackA = () => {
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console.log('A');
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myEmitter.removeListener('event', callbackB);
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};
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const callbackB = () => {
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console.log('B');
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};
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myEmitter.on('event', callbackA);
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myEmitter.on('event', callbackB);
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// callbackA removes listener callbackB but it will still be called.
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// Internal listener array at time of emit [callbackA, callbackB]
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myEmitter.emit('event');
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// Prints:
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// A
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// B
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// callbackB is now removed.
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// Internal listener array [callbackA]
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myEmitter.emit('event');
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// Prints:
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// A
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```
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Because listeners are managed using an internal array, calling this will
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change the position indices of any listener registered _after_ the listener
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being removed. This will not impact the order in which listeners are called,
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but it means that any copies of the listener array as returned by
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the `emitter.listeners()` method will need to be recreated.
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When a single function has been added as a handler multiple times for a single
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event (as in the example below), `removeListener()` will remove the most
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recently added instance. In the example the `once('ping')`listener is removed:
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```js
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import { EventEmitter } from 'node:events';
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const ee = new EventEmitter();
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function pong() {
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console.log('pong');
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}
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ee.on('ping', pong);
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ee.once('ping', pong);
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ee.removeListener('ping', pong);
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ee.emit('ping');
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ee.emit('ping');
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```
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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**/
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function removeListener(eventName:ts.AnyOf2<String, js.lib.Symbol>, listener:(args:haxe.extern.Rest<Dynamic>) -> Void):Stream;
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/**
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Alias for `emitter.removeListener()`.
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**/
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function off(eventName:ts.AnyOf2<String, js.lib.Symbol>, listener:(args:haxe.extern.Rest<Dynamic>) -> Void):Stream;
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/**
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Removes all listeners, or those of the specified `eventName`.
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It is bad practice to remove listeners added elsewhere in the code,
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particularly when the `EventEmitter` instance was created by some other
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component or module (e.g. sockets or file streams).
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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**/
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function removeAllListeners(?event:ts.AnyOf2<String, js.lib.Symbol>):Stream;
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/**
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By default `EventEmitter`s will print a warning if more than `10` listeners are
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added for a particular event. This is a useful default that helps finding
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memory leaks. The `emitter.setMaxListeners()` method allows the limit to be
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modified for this specific `EventEmitter` instance. The value can be set to`Infinity` (or `0`) to indicate an unlimited number of listeners.
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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**/
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function setMaxListeners(n:Float):Stream;
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/**
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Adds the `listener` function to the _beginning_ of the listeners array for the
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event named `eventName`. No checks are made to see if the `listener` has
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already been added. Multiple calls passing the same combination of `eventName`and `listener` will result in the `listener` being added, and called, multiple
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times.
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```js
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server.prependListener('connection', (stream) => {
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console.log('someone connected!');
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});
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```
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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**/
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function prependListener(eventName:ts.AnyOf2<String, js.lib.Symbol>, listener:(args:haxe.extern.Rest<Dynamic>) -> Void):Stream;
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/**
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Adds a **one-time**`listener` function for the event named `eventName` to the _beginning_ of the listeners array. The next time `eventName` is triggered, this
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listener is removed, and then invoked.
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```js
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server.prependOnceListener('connection', (stream) => {
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console.log('Ah, we have our first user!');
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});
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```
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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**/
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function prependOnceListener(eventName:ts.AnyOf2<String, js.lib.Symbol>, listener:(args:haxe.extern.Rest<Dynamic>) -> Void):Stream;
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static var prototype : Stream;
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} |