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doc,events: use code markup/markdown in headers
Backport-PR-URL: #31108 PR-URL: #31086 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>
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doc/api/events.md

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@@ -155,7 +155,7 @@ myEmitter.emit('error', new Error('whoops!'));
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// Prints: whoops! there was an error
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```
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## Class: EventEmitter
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## Class: `EventEmitter`
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<!-- YAML
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added: v0.1.26
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// A
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```
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### Event: 'removeListener'
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### Event: `'removeListener'`
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<!-- YAML
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added: v0.9.3
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The `'removeListener'` event is emitted *after* the `listener` is removed.
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### EventEmitter.listenerCount(emitter, eventName)
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### `EventEmitter.listenerCount(emitter, eventName)`
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<!-- YAML
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added: v0.9.12
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deprecated: v4.0.0
@@ -245,7 +245,7 @@ console.log(EventEmitter.listenerCount(myEmitter, 'event'));
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// Prints: 2
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```
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### EventEmitter.defaultMaxListeners
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### `EventEmitter.defaultMaxListeners`
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<!-- YAML
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added: v0.11.2
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listeners, respectively.
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Its `name` property is set to `'MaxListenersExceededWarning'`.
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### emitter.addListener(eventName, listener)
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### `emitter.addListener(eventName, listener)`
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<!-- YAML
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Alias for `emitter.on(eventName, listener)`.
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### emitter.emit(eventName\[, ...args\])
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### `emitter.emit(eventName[, ...args])`
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<!-- YAML
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added: v0.1.26
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@@ -343,7 +343,7 @@ myEmitter.emit('event', 1, 2, 3, 4, 5);
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// event with parameters 1, 2, 3, 4, 5 in third listener
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```
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### emitter.eventNames()
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### `emitter.eventNames()`
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<!-- YAML
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// Prints: [ 'foo', 'bar', Symbol(symbol) ]
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```
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### emitter.getMaxListeners()
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### `emitter.getMaxListeners()`
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<!-- YAML
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added: v1.0.0
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set by [`emitter.setMaxListeners(n)`][] or defaults to
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[`EventEmitter.defaultMaxListeners`][].
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### emitter.listenerCount(eventName)
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### `emitter.listenerCount(eventName)`
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<!-- YAML
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Returns the number of listeners listening to the event named `eventName`.
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### emitter.listeners(eventName)
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### `emitter.listeners(eventName)`
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<!-- YAML
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// Prints: [ [Function] ]
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```
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### emitter.off(eventName, listener)
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### `emitter.off(eventName, listener)`
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<!-- YAML
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Alias for [`emitter.removeListener()`][].
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### emitter.on(eventName, listener)
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### `emitter.on(eventName, listener)`
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<!-- YAML
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// a
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```
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### emitter.once(eventName, listener)
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### `emitter.once(eventName, listener)`
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<!-- YAML
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// a
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```
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### emitter.prependListener(eventName, listener)
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### `emitter.prependListener(eventName, listener)`
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<!-- YAML
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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### emitter.prependOnceListener(eventName, listener)
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### `emitter.prependOnceListener(eventName, listener)`
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<!-- YAML
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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### emitter.removeAllListeners(\[eventName\])
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### `emitter.removeAllListeners([eventName])`
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<!-- YAML
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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### emitter.removeListener(eventName, listener)
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### `emitter.removeListener(eventName, listener)`
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<!-- YAML
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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### emitter.setMaxListeners(n)
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### `emitter.setMaxListeners(n)`
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<!-- YAML
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Returns a reference to the `EventEmitter`, so that calls can be chained.
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### emitter.rawListeners(eventName)
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### `emitter.rawListeners(eventName)`
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<!-- YAML
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emitter.emit('log');
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```
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## events.once(emitter, name)
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## `events.once(emitter, name)`
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<!-- YAML
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added: v11.13.0
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