@babel/helper-transform-fixture-test-runner/lib/exit-loader.cjs

Transform test runner for @babel/helper-fixtures module

// We need to gracefully exit rather than just terminating spawn tests with SIGINT
// to let c8 correctly report the collected coverage info.
// eslint-disable-next-line n/no-process-exit
process.on("message", () => process.exit(0));
process.channel?.unref();