Basic injectable class for AngularJS

injectable.js

/**
 * injectable
 *
 * Provides a constructor to move items from the $inject property to local object members.
 *
 *  inject = ['$q', '$http'] //translates to
 *
 *  this.$q
 *  this.$http
 */
 
export class Injectable {
  static set inject(...args) {
    this.prototype.$inject = this.$inject = args;
  }
  
  static get inject() {
    return this.$inject || [];
  }
  
  constructor(...args) {
    this.inject.forEach((dep, idx) => {
      if (args.length < idx - 1) {
        throw new Error(`could not read ${dep} - no more arguments passed`);
      }
      this[dep] = args[idx];
    });
  }
};