feat: `FsFile.sync()` and `FsFile.syncSync()` (#22017)

This change:
1. Implements `Deno.FsFile.sync()` and `Deno.FsFile.syncSync()`.
2. Deprecates `Deno.fsync()` and `Deno.fsyncSync()` for removal in Deno
v2, in favour of the above corresponding methods.

Related #21995

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/ext/node/polyfills/_fs/_fs_fsync.ts b/ext/node/polyfills/_fs/_fs_fsync.ts
index 489929227..942aecf6a 100644
--- a/ext/node/polyfills/_fs/_fs_fsync.ts
+++ b/ext/node/polyfills/_fs/_fs_fsync.ts
@@ -4,14 +4,15 @@
 // deno-lint-ignore-file prefer-primordials
 
 import { CallbackWithError } from "ext:deno_node/_fs/_fs_common.ts";
+import { FsFile } from "ext:deno_fs/30_fs.js";
 
 export function fsync(
   fd: number,
   callback: CallbackWithError,
 ) {
-  Deno.fsync(fd).then(() => callback(null), callback);
+  new FsFile(fd).sync().then(() => callback(null), callback);
 }
 
 export function fsyncSync(fd: number) {
-  Deno.fsyncSync(fd);
+  new FsFile(fd).syncSync();
 }