Add Deno.realpath (#3404)

1 files changed, 19 insertions, 0 deletions

diff --git a/cli/js/realpath.ts b/cli/js/realpath.ts
new file mode 100644
index 000000000..c17a0f564
--- /dev/null
+++ b/cli/js/realpath.ts
@@ -0,0 +1,19 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { sendSync, sendAsync } from "./dispatch_json.ts";
+import * as dispatch from "./dispatch.ts";
+
+/** Returns absolute normalized path with symbolic links resolved synchronously.
+ *
+ *       const realPath = Deno.realpathSync("./some/path");
+ */
+export function realpathSync(path: string): string {
+  return sendSync(dispatch.OP_REALPATH, { path });
+}
+
+/** Returns absolute normalized path with symbolic links resolved.
+ *
+ *       const realPath = await Deno.realpath("./some/path");
+ */
+export async function realpath(path: string): Promise<string> {
+  return await sendAsync(dispatch.OP_REALPATH, { path });
+}