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, 30 insertions, 0 deletions

diff --git a/cli/tests/unit/fs_events_test.ts b/cli/tests/unit/fs_events_test.ts
index 9330f2007..86adeb4d7 100644
--- a/cli/tests/unit/fs_events_test.ts
+++ b/cli/tests/unit/fs_events_test.ts
@@ -107,3 +107,33 @@ Deno.test(
     assertEquals(events, []);
   },
 );
+
+Deno.test(
+  { permissions: { read: true, write: true } },
+  async function watchFsExplicitResourceManagement() {
+    let res;
+    {
+      const testDir = await makeTempDir();
+      using iter = Deno.watchFs(testDir);
+
+      res = iter[Symbol.asyncIterator]().next();
+    }
+
+    const { done } = await res;
+    assert(done);
+  },
+);
+
+Deno.test(
+  { permissions: { read: true, write: true } },
+  async function watchFsExplicitResourceManagementManualClose() {
+    const testDir = await makeTempDir();
+    using iter = Deno.watchFs(testDir);
+
+    const res = iter[Symbol.asyncIterator]().next();
+
+    iter.close();
+    const { done } = await res;
+    assert(done);
+  },
+);