Function register

src/controller/factory.js:85–91

* Register controllers * @param {String} type - The type of the connecting UI component * @param {Class} contrConstructor * @param {Array } allowedSecondaryTypes - UI components that are allowed to connect to the defined controller * @return {Object} A controller instance

(type, contrConstructor, allowedSecondaryTypes)

 * @return {Object} A controller instance
 */
function register(type, contrConstructor, allowedSecondaryTypes) {
  if (repo.has(type)) {
    throw new Error('Subcontroller class already registered.');
  } else {
    repo.set(type, {contrConstructor, allowedSecondaryTypes});
  }
}

function registerPeer(type, contrConstructor) {
  if (peerRepo.has(type)) {