fix(ext/node): add FileHandle#datasync & FileHandle#sync

ext/node/polyfills/internal/fs/handle.ts

@@ -158,6 +158,14 @@ export class FileHandle extends EventEmitter {
     return promises.chmod(this.#path, mode);
   }
 
+  datasync(): Promise<void> {
+    return fsCall(promises.fdatasync, this);
+  }
+
+  sync(): Promise<void> {
+    return fsCall(promises.fsync, this);
+  }
+
   utimes(
     atime: number | string | Date,
     mtime: number | string | Date,

tests/node_compat/config.jsonc

@@ -480,6 +480,7 @@
       "test-fs-opendir.js",
       "test-fs-promises-exists.js",
       "test-fs-promises-file-handle-stat.js",
+      "test-fs-promises-file-handle-sync.js",
       "test-fs-promises-file-handle-write.js",
       "test-fs-promises-readfile-empty.js",
       "test-fs-promises-readfile-with-fd.js",

tests/node_compat/test/parallel/test-fs-promises-file-handle-sync.js

@@ -0,0 +1,42 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 20.11.1
+// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
+
+'use strict';
+require('../common');
+const assert = require('assert');
+const fixtures = require('../common/fixtures');
+const tmpdir = require('../common/tmpdir');
+
+const { access, copyFile, open } = require('fs').promises;
+
+async function validate() {
+  tmpdir.refresh();
+  const dest = tmpdir.resolve('baz.js');
+  await assert.rejects(
+    copyFile(fixtures.path('baz.js'), dest, 'r'),
+    {
+      code: 'ERR_INVALID_ARG_TYPE',
+    }
+  );
+  await copyFile(fixtures.path('baz.js'), dest);
+  await assert.rejects(
+    access(dest, 'r'),
+    { code: 'ERR_INVALID_ARG_TYPE', message: /mode/ }
+  );
+  await access(dest);
+  const handle = await open(dest, 'r+');
+  await handle.datasync();
+  await handle.sync();
+  const buf = Buffer.from('hello world');
+  await handle.write(buf);
+  const ret = await handle.read(Buffer.alloc(11), 0, 11, 0);
+  assert.strictEqual(ret.bytesRead, 11);
+  assert.deepStrictEqual(ret.buffer, buf);
+  await handle.close();
+}
+
+validate();