sl clone git@github.com:facebook/jest.git # or git clone git@github.com:facebook/jest.git
cd jest
yarn
cd examples/getting-started
yarn
mkdir -pv .sl/origbackups/
echo "aoeu}{" > .sl/origbackups/package.json
node ../../packages/jest-cli/bin/jest.js

❯ node ../../packages/jest-cli/bin/jest.js                                                                           ─╯
Error: Cannot parse /Users/m0c0j7y/workspace/github.com/facebook/jest/examples/getting-started/.sl/origbackups/package.json as JSON: Unexpected token 'a', "aoeu}{
" is not valid JSON
    at Object.worker (/Users/m0c0j7y/workspace/github.com/facebook/jest/packages/jest-haste-map/build/worker.js:128:13)
    at execFunction (/Users/m0c0j7y/workspace/github.com/facebook/jest/packages/jest-worker/build/workers/processChild.js:130:17)
    at execHelper (/Users/m0c0j7y/workspace/github.com/facebook/jest/packages/jest-worker/build/workers/processChild.js:
118:5)
    at execMethod (/Users/m0c0j7y/workspace/github.com/facebook/jest/packages/jest-worker/build/workers/processChild.js:121:5)
    at process.messageListener (/Users/m0c0j7y/workspace/github.com/facebook/jest/packages/jest-worker/build/workers/processChild.js:44:7)
    at process.emit (node:events:513:28)
    at emit (node:internal/child_process:944:14)
    at process.processTicksAndRejections (node:internal/process/task_queues:83:21)

❯ npx envinfo --preset jest                                                                                          ─╯

  System:
    OS: macOS 12.6.1
    CPU: (16) x64 Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
  Binaries:
    Node: 19.2.0 - /usr/local/bin/node
    Yarn: 3.3.0 - /usr/local/bin/yarn
    npm: 9.2.0 - /usr/local/bin/npm