refactor(core): CORE-01 migrate utility contracts to TypeScript

packages/artplayer/src/utils/time.ts

@@ -0,0 +1,32 @@
+export function sleep(ms = 0): Promise<void> {
+  return new Promise(resolve => setTimeout(resolve, ms))
+}
+
+export function debounce<Receiver, Args extends unknown[]>(func: (this: Receiver, ...args: Args) => unknown, duration: number) {
+  let timeout: ReturnType<typeof setTimeout> | undefined
+
+  return function (this: Receiver, ...args: Args): void {
+    const effect = () => {
+      timeout = undefined
+      return func.apply(this, args)
+    }
+
+    clearTimeout(timeout)
+    timeout = setTimeout(effect, duration)
+  }
+}
+
+export function throttle<Receiver, Args extends unknown[]>(func: (this: Receiver, ...args: Args) => unknown, duration: number) {
+  let shouldWait = false
+
+  return function (this: Receiver, ...args: Args): void {
+    if (!shouldWait) {
+      func.apply(this, args)
+      shouldWait = true
+
+      setTimeout(() => {
+        shouldWait = false
+      }, duration)
+    }
+  }
+}