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YouTube.js/docs/api/classes/EventEmitter.md
2026-05-12 23:01:15 -03:00

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[youtubei.js](../README.md) / EventEmitter
# Class: EventEmitter
Defined in: [src/utils/EventEmitterLike.ts:3](https://github.com/LuanRT/YouTube.js/blob/853a36307b5d644ada14dcb1216c2c22c2ae7b73/src/utils/EventEmitterLike.ts#L3)
## Extends
- `EventTarget`
## Extended by
- [`Session`](Session.md)
- [`LiveChat`](../youtubei.js/namespaces/YT/classes/LiveChat.md)
## Constructors
### Constructor
> **new EventEmitter**(): `EventEmitterLike`
Defined in: [src/utils/EventEmitterLike.ts:6](https://github.com/LuanRT/YouTube.js/blob/853a36307b5d644ada14dcb1216c2c22c2ae7b73/src/utils/EventEmitterLike.ts#L6)
#### Returns
`EventEmitterLike`
#### Overrides
`EventTarget.constructor`
## Methods
### addEventListener()
> **addEventListener**(`type`, `callback`, `options?`): `void`
Defined in: node\_modules/typescript/lib/lib.dom.d.ts:11569
The **`addEventListener()`** method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.
[MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/addEventListener)
#### Parameters
##### type
`string`
##### callback
`EventListenerOrEventListenerObject` | `null`
##### options?
`boolean` | `AddEventListenerOptions`
#### Returns
`void`
#### Inherited from
`EventTarget.addEventListener`
***
### dispatchEvent()
> **dispatchEvent**(`event`): `boolean`
Defined in: node\_modules/typescript/lib/lib.dom.d.ts:11575
The **`dispatchEvent()`** method of the EventTarget sends an Event to the object, (synchronously) invoking the affected event listeners in the appropriate order.
[MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/dispatchEvent)
#### Parameters
##### event
`Event`
#### Returns
`boolean`
#### Inherited from
`EventTarget.dispatchEvent`
***
### emit()
> **emit**(`type`, ...`args`): `void`
Defined in: [src/utils/EventEmitterLike.ts:10](https://github.com/LuanRT/YouTube.js/blob/853a36307b5d644ada14dcb1216c2c22c2ae7b73/src/utils/EventEmitterLike.ts#L10)
#### Parameters
##### type
`string`
##### args
...`any`[]
#### Returns
`void`
***
### off()
> **off**(`type`, `listener`): `void`
Defined in: [src/utils/EventEmitterLike.ts:40](https://github.com/LuanRT/YouTube.js/blob/853a36307b5d644ada14dcb1216c2c22c2ae7b73/src/utils/EventEmitterLike.ts#L40)
#### Parameters
##### type
`string`
##### listener
(...`args`) => `void`
#### Returns
`void`
***
### on()
> **on**(`type`, `listener`): `void`
Defined in: [src/utils/EventEmitterLike.ts:15](https://github.com/LuanRT/YouTube.js/blob/853a36307b5d644ada14dcb1216c2c22c2ae7b73/src/utils/EventEmitterLike.ts#L15)
#### Parameters
##### type
`string`
##### listener
(...`args`) => `void`
#### Returns
`void`
***
### once()
> **once**(`type`, `listener`): `void`
Defined in: [src/utils/EventEmitterLike.ts:27](https://github.com/LuanRT/YouTube.js/blob/853a36307b5d644ada14dcb1216c2c22c2ae7b73/src/utils/EventEmitterLike.ts#L27)
#### Parameters
##### type
`string`
##### listener
(...`args`) => `void`
#### Returns
`void`
***
### removeEventListener()
> **removeEventListener**(`type`, `callback`, `options?`): `void`
Defined in: node\_modules/typescript/lib/lib.dom.d.ts:11581
The **`removeEventListener()`** method of the EventTarget interface removes an event listener previously registered with EventTarget.addEventListener() from the target.
[MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener)
#### Parameters
##### type
`string`
##### callback
`EventListenerOrEventListenerObject` | `null`
##### options?
`boolean` | `EventListenerOptions`
#### Returns
`void`
#### Inherited from
`EventTarget.removeEventListener`