Function harness

__tests__/fatal-handler.test.ts:57–69

()

describe('installFatalHandlers', () => {
  function harness() {
    const target = new EventEmitter();
    const writes: string[] = [];
    const exits: number[] = [];
    installFatalHandlers({
      target,
      write: (line) => writes.push(line),
      exit: (code) => {
        exits.push(code);
      },
    });
    return { target, writes, exits };
  }

  it('logs a bounded line and exits non-zero on an uncaught exception', () => {
    const { target, writes, exits } = harness();