diff --git a/packages/jest-runner/src/index.ts b/packages/jest-runner/src/index.ts index acc8139e1eec..4b8f73f40b5a 100644 --- a/packages/jest-runner/src/index.ts +++ b/packages/jest-runner/src/index.ts @@ -166,7 +166,12 @@ export default class TestRunner { const worker = new Worker(TEST_WORKER_PATH, { exposedMethods: ['worker'], - forkOptions: {stdio: 'pipe'}, + forkOptions: { + // default to advanced serialization in order to match worker threads + // @ts-expect-error: option does not exist on the node 10 types + serialization: 'advanced', + stdio: 'pipe', + }, maxRetries: 3, numWorkers: this._globalConfig.maxWorkers, setupArgs: [