Function withPlatform

test/spawnReplacementProcess.test.js:47–55

(value, fn)

// Helper: temporarily override process.platform without leaking state.
function withPlatform(value, fn) {
  const desc = Object.getOwnPropertyDescriptor(process, 'platform');
  Object.defineProperty(process, 'platform', { value, configurable: true });
  try {
    return fn();
  } finally {
    Object.defineProperty(process, 'platform', desc);
  }
}

function withEnv(key, value, fn) {
  const had = Object.prototype.hasOwnProperty.call(process.env, key);