Function _mustCallInner

test/common.js:50–85

(fn, criteria = 1, field)

}

function _mustCallInner(fn, criteria = 1, field) {
  if (process._exiting)
    throw new Error('Cannot use common.mustCall*() in process exit handler');

  if (typeof fn === 'number') {
    criteria = fn;
    fn = noop;
  } else if (fn === undefined) {
    fn = noop;
  }

  if (typeof criteria !== 'number')
    throw new TypeError(`Invalid ${field} value: ${criteria}`);

  const context = {
    [field]: criteria,
    actual: 0,
    stack: inspect(new Error()),
    name: fn.name || '<anonymous>'
  };

  // Add the exit listener only once to avoid listener leak warnings
  if (mustCallChecks.length === 0)
    process.on('exit', runCallChecks);

  mustCallChecks.push(context);

  function wrapped(...args) {
    ++context.actual;
    return fn.call(this, ...args);
  }
  // TODO: remove origFn?
  wrapped.origFn = fn;

  return wrapped;
}

function getCallSite(top) {
  const originalStackFormatter = Error.prepareStackTrace;