1 files changed, 45 insertions, 0 deletions
diff --git a/cli/js/utime.ts b/cli/js/utime.ts
new file mode 100644
index 000000000..7495378b1
--- /dev/null
+++ b/cli/js/utime.ts
@@ -0,0 +1,45 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { sendSync, sendAsync } from "./dispatch_json.ts";
+import { OP_UTIME } from "./dispatch.ts";
+
+function toSecondsFromEpoch(v: number | Date): number {
+  return v instanceof Date ? v.valueOf() / 1000 : v;
+}
+
+/** Synchronously changes the access and modification times of a file system
+ * object referenced by `filename`. Given times are either in seconds
+ * (Unix epoch time) or as `Date` objects.
+ *
+ *       Deno.utimeSync("myfile.txt", 1556495550, new Date());
+ */
+export function utimeSync(
+  filename: string,
+  atime: number | Date,
+  mtime: number | Date
+): void {
+  sendSync(OP_UTIME, {
+    filename,
+    // TODO(ry) split atime, mtime into [seconds, nanoseconds] tuple
+    atime: toSecondsFromEpoch(atime),
+    mtime: toSecondsFromEpoch(mtime)
+  });
+}
+
+/** Changes the access and modification times of a file system object
+ * referenced by `filename`. Given times are either in seconds
+ * (Unix epoch time) or as `Date` objects.
+ *
+ *       await Deno.utime("myfile.txt", 1556495550, new Date());
+ */
+export async function utime(
+  filename: string,
+  atime: number | Date,
+  mtime: number | Date
+): Promise<void> {
+  await sendAsync(OP_UTIME, {
+    filename,
+    // TODO(ry) split atime, mtime into [seconds, nanoseconds] tuple
+    atime: toSecondsFromEpoch(atime),
+    mtime: toSecondsFromEpoch(mtime)
+  });
+}