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denoland-deno/cli/tests/testdata/worker_close_nested.js

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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
// Test that closing a worker which has living child workers will automatically
// close the children.
console.log("Starting the main thread");
const worker = new Worker(
new URL("./workers/close_nested_parent.js", import.meta.url),
{ type: "module" },
);
setTimeout(() => {
console.log("About to close");
worker.postMessage({});
// Keep the process running for another two seconds, to make sure there's no
// output from the child worker.
setTimeout(() => {}, 2000);
}, 1000);