function invokeCallback()

in Damage Assessment Visualizer/js/noty.js [1570:1608]

• 34 lines of code
• 10 McCabe index (conditional complexity)

function invokeCallback(settled, promise, callback, detail) {
  var hasCallback = isFunction(callback),
      value = undefined,
      error = undefined,
      succeeded = undefined,
      failed = undefined;

  if (hasCallback) {
    value = tryCatch(callback, detail);

    if (value === TRY_CATCH_ERROR) {
      failed = true;
      error = value.error;
      value.error = null;
    } else {
      succeeded = true;
    }

    if (promise === value) {
      reject(promise, cannotReturnOwn());
      return;
    }
  } else {
    value = detail;
    succeeded = true;
  }

  if (promise._state !== PENDING) {
    // noop
  } else if (hasCallback && succeeded) {
      resolve(promise, value);
    } else if (failed) {
      reject(promise, error);
    } else if (settled === FULFILLED) {
      fulfill(promise, value);
    } else if (settled === REJECTED) {
      reject(promise, value);
    }
}