1 files changed, 35 insertions, 0 deletions

diff --git a/server/lib/internal-event-emitter.ts b/server/lib/internal-event-emitter.ts
new file mode 100644
index 000000000..08b46a5c3
--- /dev/null
+++ b/server/lib/internal-event-emitter.ts
@@ -0,0 +1,35 @@
+import { MChannel, MVideo } from '@server/types/models'
+import { EventEmitter } from 'events'
+
+export interface PeerTubeInternalEvents {
+  'video-created': (options: { video: MVideo }) => void
+  'video-updated': (options: { video: MVideo }) => void
+  'video-deleted': (options: { video: MVideo }) => void
+
+  'channel-created': (options: { channel: MChannel }) => void
+  'channel-updated': (options: { channel: MChannel }) => void
+  'channel-deleted': (options: { channel: MChannel }) => void
+}
+
+declare interface InternalEventEmitter {
+  on<U extends keyof PeerTubeInternalEvents>(
+    event: U, listener: PeerTubeInternalEvents[U]
+  ): this
+
+  emit<U extends keyof PeerTubeInternalEvents>(
+    event: U, ...args: Parameters<PeerTubeInternalEvents[U]>
+  ): boolean
+}
+
+class InternalEventEmitter extends EventEmitter {
+
+  private static instance: InternalEventEmitter
+
+  static get Instance () {
+    return this.instance || (this.instance = new this())
+  }
+}
+
+export {
+  InternalEventEmitter
+}