Function assertFileValid

util.js:163–169

(path, allowRemoteRequests)

export const isUrl = (path) => /^https?:\/\//.test(path);

export const assertFileValid = async (path, allowRemoteRequests) => {
  if (isUrl(path)) {
    assert(allowRemoteRequests, 'Remote requests are not allowed');
    return;
  }
  assert(await fsExtra.pathExists(path), `File does not exist ${path}`);
};

// See #16
export const checkTransition = (transition) => assert(transition == null || typeof transition === 'object', 'Transition must be an object');