From 0ea1ab4b464b66d48c26e47e8a970e645729877f Mon Sep 17 00:00:00 2001
From: Dragory <2606411+Dragory@users.noreply.github.com>
Date: Sat, 22 May 2021 13:46:55 +0300
Subject: [PATCH] Add .length to Queue

---
 backend/src/Queue.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/backend/src/Queue.ts b/backend/src/Queue.ts
index 3158346b..cf507a22 100644
--- a/backend/src/Queue.ts
+++ b/backend/src/Queue.ts
@@ -14,6 +14,16 @@ export class Queue<TQueueFunction extends AnyFn = AnyFn> {
     this.timeout = timeout;
   }
 
+  /**
+   * The number of operations that are currently queued up or running.
+   * I.e. backlog (queue) + current running process, if any.
+   *
+   * If this is 0, queueing a function will run it as soon as possible.
+   */
+  get length(): number {
+    return this.queue.length + (this.running ? 1 : 0);
+  }
+
   public add(fn: TQueueFunction): Promise<void> {
     const promise = new Promise<void>(resolve => {
       this.queue.push(async () => {