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youtubei.js / YT / LiveChat

Class: LiveChat

Extends

  • EventEmitter

Constructors

new LiveChat()

new LiveChat(video_info): LiveChat

Parameters

• video_info: VideoInfo

Returns

LiveChat

Overrides

EventEmitter.constructor

Defined in

src/parser/youtube/LiveChat.ts:72

Properties

initial_info?

optional initial_info: LiveChatContinuation

Defined in

src/parser/youtube/LiveChat.ts:67


is_replay

is_replay: boolean = false

Defined in

src/parser/youtube/LiveChat.ts:70


metadata?

optional metadata: LiveMetadata

Defined in

src/parser/youtube/LiveChat.ts:68


running

running: boolean = false

Defined in

src/parser/youtube/LiveChat.ts:69


smoothed_queue

smoothed_queue: SmoothedQueue

Defined in

src/parser/youtube/LiveChat.ts:66

Methods

addEventListener()

addEventListener(type, callback, options?): void

Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.

The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture.

When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET.

When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners.

When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed.

If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted.

The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture.

MDN Reference

Parameters

• type: string

• callback: null | EventListenerOrEventListenerObject

• options?: boolean | AddEventListenerOptions

Returns

void

Inherited from

EventEmitter.addEventListener

Defined in

node_modules/typescript/lib/lib.dom.d.ts:8256


applyFilter()

applyFilter(filter): void

Applies given filter to the live chat.

Parameters

• filter: "TOP_CHAT" | "LIVE_CHAT"

Filter to apply.

Returns

void

Defined in

src/parser/youtube/LiveChat.ts:286


dispatchEvent()

dispatchEvent(event): boolean

Dispatches a synthetic event event to target and returns true if either event's cancelable attribute value is false or its preventDefault() method was not invoked, and false otherwise.

MDN Reference

Parameters

• event: Event

Returns

boolean

Inherited from

EventEmitter.dispatchEvent

Defined in

node_modules/typescript/lib/lib.dom.d.ts:8262


emit()

emit(type, ...args): void

Parameters

• type: string

• ...args: any[]

Returns

void

Inherited from

EventEmitter.emit

Defined in

src/utils/EventEmitterLike.ts:10


getItemMenu()

getItemMenu(item): Promise<ItemMenu>

Retrieves given chat item's menu.

Parameters

• item: ChatItemWithMenu

Returns

Promise<ItemMenu>

Defined in

src/parser/youtube/LiveChat.ts:304


off()

off(type, listener): void

Parameters

• type: string

• listener

Returns

void

Inherited from

EventEmitter.off

Defined in

src/utils/EventEmitterLike.ts:40


on()

on(type, listener)

on(type, listener): void

Parameters

• type: "start"

• listener

Returns

void

Overrides

EventEmitter.on

Defined in

src/parser/youtube/LiveChat.ts:107

on(type, listener)

on(type, listener): void

Parameters

• type: "chat-update"

• listener

Returns

void

Overrides

EventEmitter.on

Defined in

src/parser/youtube/LiveChat.ts:108

on(type, listener)

on(type, listener): void

Parameters

• type: "metadata-update"

• listener

Returns

void

Overrides

EventEmitter.on

Defined in

src/parser/youtube/LiveChat.ts:109

on(type, listener)

on(type, listener): void

Parameters

• type: "error"

• listener

Returns

void

Overrides

EventEmitter.on

Defined in

src/parser/youtube/LiveChat.ts:110

on(type, listener)

on(type, listener): void

Parameters

• type: "end"

• listener

Returns

void

Overrides

EventEmitter.on

Defined in

src/parser/youtube/LiveChat.ts:111


once()

once(type, listener)

once(type, listener): void

Parameters

• type: "start"

• listener

Returns

void

Overrides

EventEmitter.once

Defined in

src/parser/youtube/LiveChat.ts:116

once(type, listener)

once(type, listener): void

Parameters

• type: "chat-update"

• listener

Returns

void

Overrides

EventEmitter.once

Defined in

src/parser/youtube/LiveChat.ts:117

once(type, listener)

once(type, listener): void

Parameters

• type: "metadata-update"

• listener

Returns

void

Overrides

EventEmitter.once

Defined in

src/parser/youtube/LiveChat.ts:118

once(type, listener)

once(type, listener): void

Parameters

• type: "error"

• listener

Returns

void

Overrides

EventEmitter.once

Defined in

src/parser/youtube/LiveChat.ts:119

once(type, listener)

once(type, listener): void

Parameters

• type: "end"

• listener

Returns

void

Overrides

EventEmitter.once

Defined in

src/parser/youtube/LiveChat.ts:120


removeEventListener()

removeEventListener(type, callback, options?): void

Removes the event listener in target's event listener list with the same type, callback, and options.

MDN Reference

Parameters

• type: string

• callback: null | EventListenerOrEventListenerObject

• options?: boolean | EventListenerOptions

Returns

void

Inherited from

EventEmitter.removeEventListener

Defined in

node_modules/typescript/lib/lib.dom.d.ts:8268


selectButton()

selectButton(button): Promise<IParsedResponse>

Equivalent to "clicking" a button.

Parameters

• button: Button

Returns

Promise<IParsedResponse>

Defined in

src/parser/youtube/LiveChat.ts:319


sendMessage()

sendMessage(text): Promise<ObservedArray<AddChatItemAction>>

Sends a message.

Parameters

• text: string

Text to send.

Returns

Promise<ObservedArray<AddChatItemAction>>

Defined in

src/parser/youtube/LiveChat.ts:254


start()

start(): void

Returns

void

Defined in

src/parser/youtube/LiveChat.ts:125


stop()

stop(): void

Returns

void

Defined in

src/parser/youtube/LiveChat.ts:133

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Last Updated:: 3/25/25, 8:08 PM
Contributors: EdamAme-x