How I can use external JavaScript library imported as ES6 module in Angularjs service?

Question

I have a service that require external library, for example moment. I import that library as ES6 module. But because AngularJS service defined using closure approach, library is not available when funcA() is being been called.

service.js

import moment from 'moment';
export function DataService() {
    return { 

        funcA: function() {
            return moment().startOf('day').fromNow(); 
        } 
    };
}

controller.js

MyCtrl.$inject = ['$scope', '$state', 'DataService', ...];
export function MyCtrl($scope, $state, DataService, ...) {

    function setInitialDate () {
      ctrl.someDate = DataService.funcA();
    }
}

app.js

import {DataService} from './service.js';
import {MyCtrl} from './controller.js';

var services = angular.module('services', []); 
services.factory('DataService', DataService);

angular.module('mycontrollers').controller('MyCtrl', MyCtrl);

I can import external library into window object, and get access to it inside service using $window. Is there exists other way to get access to library, that was imported as ES6 module, from inside AngularJS service?

What you have looks like it should work. You may need to add more details to your question — frodo2975
– frodo2975, Commented Apr 30, 2019 at 19:48
@NagaSaiA moment is undefined inside funcA(). It is not a message in console, it is the state of moment variable when function is being executed. — Raf
– Raf, Commented Apr 30, 2019 at 20:15

georgeawg · Accepted Answer · 2019-04-30 20:24:13Z

1

Put the factory and the controller in the same module:

import {DataService} from './service.js';
import {MyCtrl} from './controller.js';

angular.module('app',[])
.factory('DataService', DataService);
.controller('MyCtrl', MyCtrl);

answered Apr 30, 2019 at 20:24

georgeawg

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1 Comment

Raf Over a year ago

It works, but during tests I should mock app module. It may be inconvenient if I need to tests only services. Can you suggest the other approach so I could keep modules separated?

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