Error: Unexpected message on Worker: 'some message' ❯ Worker.<anonymous> dist/index.js:739:9 ❯ Worker.emit node:events:517:28 ❯ MessagePort.<anonymous> node:internal/worker:256:53 ❯ MessagePort.[nodejs.internal.kHybridDispatch] node:internal/event_target:786:20 ❯ MessagePort.exports.emitMessage node:internal/per_context/messageport:23:28 This error originated in "test/uncaught-exception-from-handler.test.ts" test file. It doesn't mean the error was thrown inside the file itself, but while it was running. The latest test that might've caused the error is "using parentPort is treated as an error". It might mean one of the following: - The error was thrown, while Vitest was running this test. - If the error occurred after the test had been completed, this was the last documented test before it was thrown.

Process completed with exit code 1.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/setup-node@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/