Add 'www/queue.js'

www/queue.js

@@ -0,0 +1,40 @@
+// Loops and calls each function in a queue
+function Queue() {
+  let queue = [];
+  let isLooping = false;
+  let isPaused = false;
+
+  this.loop = async () => {
+    isLooping = true;
+
+    const item = queue[0];
+    queue.shift();
+    await item();
+
+    if (!queue.length || isPaused) {
+      isLooping = false;
+      return;
+    }
+
+    this.loop();
+  };
+
+  this.add = item => {
+    if (isPaused) return;
+
+    queue.push(item);
+
+    if (!isLooping) this.loop();
+  };
+
+  this.clear = () => {
+    queue = [];
+  };
+
+  this.pause = (duration = 0) => {
+    isPaused = true;
+    setTimeout(() => (isPaused = false), duration);
+  };
+
+  this.isLooping = isLooping;
+}