From 428266c06a192f008a5429e871f783dfb4601f93 Mon Sep 17 00:00:00 2001
From: Divy Srivastava <dj.srivastava23@gmail.com>
Date: Tue, 6 Feb 2024 12:32:58 +0530
Subject: [PATCH] fix(node): add `cp` to fs/promises (#22263)

---
 cli/tests/unit_node/fs_test.ts    | 16 +++++++++++++++-
 ext/node/polyfills/fs/promises.ts |  1 +
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/cli/tests/unit_node/fs_test.ts b/cli/tests/unit_node/fs_test.ts
index 11114823f2..6766c59280 100644
--- a/cli/tests/unit_node/fs_test.ts
+++ b/cli/tests/unit_node/fs_test.ts
@@ -15,7 +15,7 @@ import {
   readFileSync,
   writeFileSync,
 } from "node:fs";
-import { constants as fsPromiseConstants } from "node:fs/promises";
+import { constants as fsPromiseConstants, cp } from "node:fs/promises";
 import { pathToAbsoluteFileUrl } from "../unit/test_util.ts";
 
 Deno.test(
@@ -100,3 +100,17 @@ Deno.test(
     assertEquals(constants, promises.constants);
   },
 );
+
+Deno.test(
+  "[node/fs/promises cp] copy file",
+  async () => {
+    const src = mkdtempSync(join(tmpdir(), "foo-")) + "/test.txt";
+    const dest = mkdtempSync(join(tmpdir(), "foo-")) + "/test.txt";
+    writeFileSync(src, "Hello");
+
+    await cp(src, dest);
+
+    const dataRead = readFileSync(dest, "utf8");
+    assert(dataRead === "Hello");
+  },
+);
diff --git a/ext/node/polyfills/fs/promises.ts b/ext/node/polyfills/fs/promises.ts
index ffdb862d8c..3e5329dbbe 100644
--- a/ext/node/polyfills/fs/promises.ts
+++ b/ext/node/polyfills/fs/promises.ts
@@ -30,5 +30,6 @@ export const writeFile = fsPromises.writeFile;
 export const appendFile = fsPromises.appendFile;
 export const readFile = fsPromises.readFile;
 export const watch = fsPromises.watch;
+export const cp = fsPromises.cp;
 
 export default fsPromises;