feat: explicit resource management in TypeScript (#20506)

This adds support for `using` and `await using` declarations in
TypeScript only. We need to wait for v8 to support it for this to work
in JS.

3 files changed, 31 insertions, 0 deletions

diff --git a/cli/tests/integration/run_tests.rs b/cli/tests/integration/run_tests.rs
index be9bc554a..0a5e86b1f 100644
--- a/cli/tests/integration/run_tests.rs
+++ b/cli/tests/integration/run_tests.rs
@@ -4701,3 +4701,8 @@ console.log(returnsHi());"#,
 ")
     .assert_exit_code(1);
 }
+
+itest!(explicit_resource_management {
+  args: "run --quiet --check run/explicit_resource_management/main.ts",
+  output: "run/explicit_resource_management/main.out",
+});
diff --git a/cli/tests/testdata/run/explicit_resource_management/main.out b/cli/tests/testdata/run/explicit_resource_management/main.out
new file mode 100644
index 000000000..ff5ac4b59
--- /dev/null
+++ b/cli/tests/testdata/run/explicit_resource_management/main.out
@@ -0,0 +1,5 @@
+A
+Disposed
+B
+Async disposed
+C
diff --git a/cli/tests/testdata/run/explicit_resource_management/main.ts b/cli/tests/testdata/run/explicit_resource_management/main.ts
new file mode 100644
index 000000000..0201a51f9
--- /dev/null
+++ b/cli/tests/testdata/run/explicit_resource_management/main.ts
@@ -0,0 +1,21 @@
+class Resource {
+  [Symbol.dispose]() {
+    console.log("Disposed");
+  }
+}
+class AsyncResource {
+  async [Symbol.asyncDispose]() {
+    await new Promise((resolve) => setTimeout(resolve, 10));
+    console.log("Async disposed");
+  }
+}
+
+{
+  using resource = new Resource();
+  console.log("A");
+}
+{
+  await using resource = new AsyncResource();
+  console.log("B");
+}
+console.log("C");