fix: Don't panic when a worker is closed in the reactions to a wasm operation. (#12270)

1 files changed, 10 insertions, 0 deletions

diff --git a/cli/tests/testdata/worker_close_in_wasm_reactions.js b/cli/tests/testdata/worker_close_in_wasm_reactions.js
new file mode 100644
index 000000000..2f5ea32d5
--- /dev/null
+++ b/cli/tests/testdata/worker_close_in_wasm_reactions.js
@@ -0,0 +1,10 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+
+// https://github.com/denoland/deno/issues/12263
+// Test for a panic that happens when a worker is closed in the reactions of a
+// WASM async operation.
+
+new Worker(
+  new URL("./workers/close_in_wasm_reactions.js", import.meta.url),
+  { type: "module" },
+);