EventSubMiddleware

A connect-compatible middleware for the Twitch EventSub event distribution mechanism.

Overview

Methods

Constructor

new EventSubMiddleware(apiClient, config)

Creates a new EventSub middleware wrapper.

Parameter	Type	Default	Description
apiClient	ApiClient	none	The ApiClient instance to use for user info and API requests.
config	EventSubMiddlewareConfig	none
config.hostName	string	none	The host name the root application is available under.
config.logger	Partial<LoggerOptions>	none	Options to pass to the logger.
config.pathPrefix	string	none	The path your listener is mounted under.
config.secret	string	none	Your EventSub secret. This should be a randomly generated string, but it should be the same between restarts. WARNING: Please do not use your application's client secret!

Methods

apply(app)

async

Applies middleware that handles EventSub notifications to a connect-compatible app (like express).

The express app should be started before this.

Parameter	Type	Required	Default	Description
app	ConnectCompatibleApp		none	The app the middleware should be applied to.

Return type: void

markAsReady()

async

Return type: void

subscribeToChannelBanEvents(user, handler)

async

Subscribes to events that represent a user getting banned from a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for when users get banned in their channel.
handler	(event: EventSubChannelBanEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelCheerEvents(user, handler)

async

Subscribes to events that represent a user cheering some bits.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for about cheers they get.
handler	(event: EventSubChannelCheerEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelFollowEvents(user, handler)

async

Subscribes to events that represent a user following a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications about their followers.
handler	(event: EventSubChannelFollowEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelHypeTrainBeginEvents(user, handler)

async

Subscribes to events that represent a Hype Train beginning.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications about Hype Trains in their channel.
handler	(data: EventSubChannelHypeTrainBeginEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelHypeTrainEndEvents(user, handler)

async

Subscribes to events that represent the end of a Hype Train in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications about Hype Trains in their channel.
handler	(data: EventSubChannelHypeTrainEndEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelHypeTrainProgressEvents(user, handler)

async

Subscribes to events that represent progress in a Hype Train in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications about Hype Trains in their channel.
handler	(data: EventSubChannelHypeTrainProgressEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelModeratorAddEvents(user, handler)

async

Subscribes to events that represent a user getting moderator permissions in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for when users get moderator permissions in their channel.
handler	(event: EventSubChannelModeratorEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelModeratorRemoveEvents(user, handler)

async

Subscribes to events that represent a user losing moderator permissions in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for when users lose moderator permissions in their channel.
handler	(event: EventSubChannelModeratorEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelPollBeginEvents(user, handler)

async

Subscribes to events that represent a poll starting in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The broadcaster for which to receive poll begin events.
handler	(data: EventSubChannelPollBeginEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelPollEndEvents(user, handler)

async

Subscribes to events that represent a poll ending in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The broadcaster for which to receive poll end events.
handler	(data: EventSubChannelPollEndEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelPollProgressEvents(user, handler)

async

Subscribes to events that represent a poll being voted on in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The broadcaster for which to receive poll progress events.
handler	(data: EventSubChannelPollProgressEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelPredictionBeginEvents(user, handler)

async

Subscribes to events that represent a prediction starting in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The broadcaster for which to receive prediction begin events.
handler	(data: EventSubChannelPredictionBeginEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelPredictionEndEvents(user, handler)

async

Subscribes to events that represent a prediction ending in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The broadcaster for which to receive prediction end events.
handler	(data: EventSubChannelPredictionEndEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelPredictionLockEvents(user, handler)

async

Subscribes to events that represent a prediction being locked in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The broadcaster for which to receive prediction lock events.
handler	(data: EventSubChannelPredictionLockEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelPredictionProgressEvents(user, handler)

async

Subscribes to events that represent a prediction being voted on in a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The broadcaster for which to receive prediction progress events.
handler	(data: EventSubChannelPredictionProgressEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRaidEventsFrom(user, handler)

async

Subscribes to events that represent a broadcaster raiding another broadcaster.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The broadcaster for which to get outgoing raid notifications.
handler	(event: EventSubChannelRaidEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRaidEventsTo(user, handler)

async

Subscribes to events that represent a broadcaster being raided by another broadcaster.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The broadcaster for which to get incoming raid notifications.
handler	(event: EventSubChannelRaidEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRedemptionAddEvents(user, handler)

async

Subscribes to events that represents a Channel Points reward being redeemed.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for when their rewards are redeemed.
handler	(data: EventSubChannelRedemptionAddEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRedemptionAddEventsForReward(user, rewardId, handler)

async

Subscribes to events that represent a specific Channel Points reward being redeemed.

Parameter	Type	Default	Description
user	UserIdResolvable	none	The user for which to get notifications when their reward is redeemed.
rewardId	string	none	The ID of the reward for which to get notifications when it is redeemed.
handler	(data: EventSubChannelRedemptionAddEvent) => void	none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRedemptionUpdateEvents(user, handler)

async

Subscribes to events that represent a Channel Points reward being updated by a broadcaster.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for when they update a reward.
handler	(data: EventSubChannelRedemptionUpdateEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRedemptionUpdateEventsForReward(user, rewardId, handler)

async

Subscribes to events that represent a specific Channel Points reward being updated by a broadcaster.

Parameter	Type	Default	Description
user	UserIdResolvable	none	The user for which to get notifications for when they update the reward.
rewardId	string	none	The ID of the reward for which to get notifications when it gets updated.
handler	(data: EventSubChannelRedemptionUpdateEvent) => void	none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRewardAddEvents(user, handler)

async

Subscribes to events that represent a Channel Points reward being added to a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for when they add a reward to their channel.
handler	(data: EventSubChannelRewardEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRewardRemoveEvents(user, handler)

async

Subscribes to events that represent a Channel Points reward being removed.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for when they remove a reward.
handler	(data: EventSubChannelRewardEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRewardRemoveEventsForReward(user, rewardId, handler)

async

Subscribes to events that represent a specific Channel Points reward being removed.

Parameter	Type	Default	Description
user	UserIdResolvable	none	The user for which to get notifications for when they remove the reward.
rewardId	string	none	The ID of the reward to get notifications for when it is removed.
handler	(data: EventSubChannelRewardEvent) => void	none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRewardUpdateEvents(user, handler)

async

Subscribes to events that represent a Channel Points reward being updated.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for when they update a reward.
handler	(data: EventSubChannelRewardEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelRewardUpdateEventsForReward(user, rewardId, handler)

async

Subscribes to events that represent a specific Channel Points reward being updated.

Parameter	Type	Default	Description
user	UserIdResolvable	none	The user for which to get notifications for when they update the reward.
rewardId	string	none	The ID of the reward for which to get notifications when it is updated.
handler	(data: EventSubChannelRewardEvent) => void	none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelSubscriptionEndEvents(user, handler)

async

Subscribes to events that represent a user's subscription to a channel ending.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for about ending subscriptions.
handler	(event: EventSubChannelSubscriptionEndEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelSubscriptionEvents(user, handler)

async

Subscribes to events that represent a user subscribing to a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for about their subscribers.
handler	(event: EventSubChannelSubscriptionEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelSubscriptionGiftEvents(user, handler)

async

Subscribes to events that represent a user gifting a subscription to a channel to someone else.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for about subscriptions people gift in their channel.
handler	(event: EventSubChannelSubscriptionGiftEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelSubscriptionMessageEvents(user, handler)

async

Subscribes to events that represent a user's subscription to a channel being announced.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for about announced subscriptions.
handler	(event: EventSubChannelSubscriptionMessageEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelUnbanEvents(user, handler)

async

Subscribes to events that represent a user getting unbanned from a channel.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications for when users get unbanned in their channel.
handler	(event: EventSubChannelUnbanEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToChannelUpdateEvents(user, handler)

async

Subscribes to events representing a change in channel metadata, e.g. stream title or category.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications about updates.
handler	(event: EventSubChannelUpdateEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToExtensionBitsTransactionCreateEvents(clientId, handler)

async

Subscribes to events that represent a Bits transaction in an extension.

Parameter	Type	Required	Default	Description
clientId	string		none	The Client ID of the extension for which to get notifications for about Bits transactions.
handler	(event: EventSubExtensionBitsTransactionCreateEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToStreamOfflineEvents(user, handler)

async

Subscribes to events representing a stream going offline.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications about their streams going offline.
handler	(event: EventSubStreamOfflineEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToStreamOnlineEvents(user, handler)

async

Subscribes to events representing a stream going live.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications about their streams going live.
handler	(event: EventSubStreamOnlineEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToUserAuthorizationRevokeEvents(clientId, handler)

async

Subscribes to events that represent a user revoking authorization from an application.

Parameter	Type	Required	Default	Description
clientId	string		none	The Client ID for which to get notifications about authorization revocations.
handler	(data: EventSubUserAuthorizationRevokeEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

subscribeToUserUpdateEvents(user, handler)

async

Subscribes to events that represent a user updating their account details.

Parameter	Type	Required	Default	Description
user	UserIdResolvable		none	The user for which to get notifications about account updates.
handler	(data: EventSubUserUpdateEvent) => void		none	The function that will be called for any new notifications.

Return type: EventSubSubscription

Basic usage

Special hosting

Classes

Interfaces

EventSubMiddleware

Overview

Methods

Constructor

new EventSubMiddleware(apiClient, config)

Methods

apply(app)

markAsReady()

subscribeToChannelBanEvents(user, handler)

subscribeToChannelCheerEvents(user, handler)

subscribeToChannelFollowEvents(user, handler)

subscribeToChannelHypeTrainBeginEvents(user, handler)

subscribeToChannelHypeTrainEndEvents(user, handler)

subscribeToChannelHypeTrainProgressEvents(user, handler)

subscribeToChannelModeratorAddEvents(user, handler)

subscribeToChannelModeratorRemoveEvents(user, handler)

subscribeToChannelPollBeginEvents(user, handler)

subscribeToChannelPollEndEvents(user, handler)

subscribeToChannelPollProgressEvents(user, handler)

subscribeToChannelPredictionBeginEvents(user, handler)

subscribeToChannelPredictionEndEvents(user, handler)

subscribeToChannelPredictionLockEvents(user, handler)

subscribeToChannelPredictionProgressEvents(user, handler)

subscribeToChannelRaidEventsFrom(user, handler)

subscribeToChannelRaidEventsTo(user, handler)

subscribeToChannelRedemptionAddEvents(user, handler)

subscribeToChannelRedemptionAddEventsForReward(user, rewardId, handler)

subscribeToChannelRedemptionUpdateEvents(user, handler)

subscribeToChannelRedemptionUpdateEventsForReward(user, rewardId, handler)

subscribeToChannelRewardAddEvents(user, handler)

subscribeToChannelRewardRemoveEvents(user, handler)

subscribeToChannelRewardRemoveEventsForReward(user, rewardId, handler)

subscribeToChannelRewardUpdateEvents(user, handler)

subscribeToChannelRewardUpdateEventsForReward(user, rewardId, handler)

subscribeToChannelSubscriptionEndEvents(user, handler)

subscribeToChannelSubscriptionEvents(user, handler)

subscribeToChannelSubscriptionGiftEvents(user, handler)

subscribeToChannelSubscriptionMessageEvents(user, handler)

subscribeToChannelUnbanEvents(user, handler)

subscribeToChannelUpdateEvents(user, handler)

subscribeToExtensionBitsTransactionCreateEvents(clientId, handler)

subscribeToStreamOfflineEvents(user, handler)

subscribeToStreamOnlineEvents(user, handler)

subscribeToUserAuthorizationRevokeEvents(clientId, handler)

subscribeToUserUpdateEvents(user, handler)