remob/src/decorator/util/validation.js

Rethinking of Redux and MobX

import Reducer from '../../redux/Reducer';

export const validateInstance = klass => klass instanceof Reducer;

/**
 * validator for correct decorator usage
 * @method validation
 * @param  {Object}   klass         instance of where decorator was used
 * @param  {Function} fn            method where decorator was used
 * @param  {String}   method        name of method in instance
 * @param  {String}   decoratorType what type pf decorator called this
 */
export default (klass, fn, method, decoratorType) => {
  if (!(klass instanceof Reducer)) {
    throw new SyntaxError(`${klass} should be instanceof Reducer`);
  }
  if (typeof fn !== 'function' || typeof method !== 'string') {
    throw new SyntaxError(`${decoratorType} decorator method ${method} is not a function.`);
  }
};