feat: disposable Deno resources (#20845)

This commit implements Symbol.dispose and Symbol.asyncDispose for
the relevant resources.

Closes #20839

---------

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

1 files changed, 6 insertions, 0 deletions

diff --git a/runtime/js/40_fs_events.js b/runtime/js/40_fs_events.js
index 4c2f5fc9a..b10f6fd10 100644
--- a/runtime/js/40_fs_events.js
+++ b/runtime/js/40_fs_events.js
@@ -9,6 +9,8 @@ const {
   PromiseResolve,
   SymbolAsyncIterator,
 } = primordials;
+import { SymbolDispose } from "ext:deno_web/00_infra.js";
+
 class FsWatcher {
   #rid = 0;
 
@@ -51,6 +53,10 @@ class FsWatcher {
   [SymbolAsyncIterator]() {
     return this;
   }
+
+  [SymbolDispose]() {
+    core.tryClose(this.#rid);
+  }
 }
 
 function watchFs(