fix: handle when buffered tasks fail

src/Utils/event-buffer.ts

@@ -40,6 +40,8 @@ type BaileysBufferableEventEmitter = BaileysEventEmitter & {
 	 * @returns true if buffering just started, false if it was already buffering
 	 * */
 	buffer(): boolean
+	/** buffers all events till the promise completes */
+	createBufferedFunction<A extends any[], T>(work: (...args: A) => Promise<T>): ((...args: A) => Promise<T>)
 	/** flushes all buffered events */
 	flush(): Promise<void>
 	/** waits for the task to complete, before releasing the buffer */
@@ -66,6 +68,36 @@ export const makeEventBuffer = (logger: Logger): BaileysBufferableEventEmitter =
 		}
 	})
 
+	function buffer() {
+		if(!isBuffering) {
+			logger.trace('buffering events')
+			isBuffering = true
+			return true
+		}
+
+		return false
+	}
+
+	async function flush() {
+		if(!isBuffering) {
+			return
+		}
+
+		logger.trace('releasing buffered events...')
+		await preBufferTask
+
+		isBuffering = false
+
+		const consolidatedData = consolidateEvents(data)
+		if(Object.keys(consolidatedData).length) {
+			ev.emit('event', consolidatedData)
+		}
+
+		data = makeBufferData()
+
+		logger.trace('released buffered events')
+	}
+
 	return {
 		process(handler) {
 			const listener = (map: BaileysEventData) => {
@@ -90,33 +122,20 @@ export const makeEventBuffer = (logger: Logger): BaileysBufferableEventEmitter =
 				preBufferTask = Promise.allSettled([ preBufferTask, task ])
 			}
 		},
-		buffer() {
-			if(!isBuffering) {
-				logger.trace('buffering events')
-				isBuffering = true
-				return true
+		buffer,
+		flush,
+		createBufferedFunction(work) {
+			return async(...args) => {
+				const started = buffer()
+				try {
+					const result = await work(...args)
+					return result
+				} finally {
+					if(started) {
+						await flush()
+					}
+				}
 			}
-
-			return false
-		},
-		async flush() {
-			if(!isBuffering) {
-				return
-			}
-
-			logger.trace('releasing buffered events...')
-			await preBufferTask
-
-			isBuffering = false
-
-			const consolidatedData = consolidateEvents(data)
-			if(Object.keys(consolidatedData).length) {
-				ev.emit('event', consolidatedData)
-			}
-
-			data = makeBufferData()
-
-			logger.trace('released buffered events')
 		},
 		on: (...args) => ev.on(...args),
 		off: (...args) => ev.off(...args),