51 lines
1.1 KiB
TypeScript
Executable File
51 lines
1.1 KiB
TypeScript
Executable File
/**
|
|
* Create an event queue that processes events sequentially.
|
|
*
|
|
* @param processEvent - Async function that processes a single event.
|
|
* @returns A function that enqueues events for processing.
|
|
*/
|
|
export function createEventQueue<T>(processEvent: (event: T) => Promise<void>) {
|
|
// The internal queue holding events.
|
|
const queue: T[] = [];
|
|
|
|
// Flag to indicate whether an event is currently being processed.
|
|
let processing = false;
|
|
|
|
/**
|
|
* Process the next event in the queue (if not already processing).
|
|
*/
|
|
async function processNext(): Promise<void> {
|
|
if (processing || queue.length === 0) {
|
|
return;
|
|
}
|
|
|
|
processing = true;
|
|
const currentEvent = queue.shift();
|
|
|
|
if (currentEvent !== undefined) {
|
|
try {
|
|
await processEvent(currentEvent);
|
|
} catch (error) {
|
|
console.error('Error processing event:', error);
|
|
}
|
|
}
|
|
|
|
processing = false;
|
|
|
|
// Recursively process the next event.
|
|
await processNext();
|
|
}
|
|
|
|
/**
|
|
* Enqueue an event and trigger processing.
|
|
*
|
|
* @param event - The event to enqueue.
|
|
*/
|
|
function enqueue(event: T): void {
|
|
queue.push(event);
|
|
void processNext();
|
|
}
|
|
|
|
return { enqueue };
|
|
}
|