WeakMaps as bags for dependencies in Angular 1

import template from './my-dummy.html';
import './my-dummy.scss';

const deps = new WeakMap();

class MyDummyController {
    constructor($timeout, $q) {
        'ngInject';
        deps.set(this, {$timeout, $q});
    }

    doSomething() {
        const {$timeout, $q} = deps.get(this);

        /*
         * Do something with $timeout & $q.
         */
    }
}

const myDummyComponent = {
    bindings: {
        $router: '<',
    },
    template,
    controller: MyDummyController,
};

angular
    .module('myDummy', [])
    .component('myDummy, myDummyComponent);