diff --git a/src/sleep/index.ts b/src/sleep/index.ts
new file mode 100644
index 0000000..5733cb7
--- /dev/null
+++ b/src/sleep/index.ts
@@ -0,0 +1,19 @@
+/**
+ * 睡眠 `n` 毫秒
+ *
+ * @example
+ * ```ts
+ * async run() {
+ *   console.log(Date.now())
+ *   await sleep(1000)
+ *   console.log(Date.now())
+ * }
+ * ```
+ */
+export default function sleep(ms = 0) {
+  return new Promise((resolve) => {
+    setTimeout(() => {
+      resolve(true)
+    }, ms)
+  })
+}