feat(runtime/worker): Structured cloning worker message passing (#9323)

This commit upgrade "Worker.postMessage()" implementation to use 
structured clone algorithm instead of non-spec compliant JSON serialization.

1 files changed, 15 insertions, 0 deletions

diff --git a/cli/tests/workers/worker_structured_cloning.ts b/cli/tests/workers/worker_structured_cloning.ts
new file mode 100644
index 000000000..eb1719a9a
--- /dev/null
+++ b/cli/tests/workers/worker_structured_cloning.ts
@@ -0,0 +1,15 @@
+// More info on structured cloning can be found here:
+// https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm
+
+self.onmessage = () => {
+  const arr = ["a", true, 432];
+  const set = new Set([1, 3, 5, 7, 9]);
+  const selfReference = {
+    a: arr,
+    b: arr,
+    c: set,
+  };
+  // deno-lint-ignore no-explicit-any
+  (selfReference as any).self = selfReference;
+  self.postMessage(selfReference);
+};