Create fakeTimer.js

JavaScript/Programmes/fakeTimer.js

@@ -0,0 +1,40 @@
+// Fake timer
+class FakeTimer{
+    constructor(){
+        this.currentTime = 0;
+        this.timers = {}
+        this.id = 1
+    }
+    fakeSetTimeout(cb, wait){
+        const timerId = this.id++
+        this.timers[timerId] = {callback: cb, delay: this.currentTime + wait}
+        return timerId;
+    }
+    fakeClearTimeout(id){
+        delete this.timers[id]
+    }
+    tick(ms){
+        this.currentTime += ms;
+        for(let [id, timer] of Object.entries(this.timers)){
+            if(this.currentTime >= timer.delay){
+                timer.callback()
+                this.fakeClearTimeout(id)
+            }else{
+                console.log(`In the queue : ${id}`)
+            }
+        }
+    }
+}
+
+const fakeTimer = new FakeTimer();
+
+// Example usage
+const timerId = fakeTimer.fakeSetTimeout(() => {
+  console.log('Executed after 100ms');
+}, 200);
+
+// Simulate the passage of time
+fakeTimer.tick(50);  // Nothing should happen
+fakeTimer.tick(50);  // Nothing should happen
+fakeTimer.tick(50);  // Nothing should happen
+fakeTimer.tick(50);  // Now it should execute the callback