Bob Bob - 6 months ago 42
AngularJS Question

ECMA6 class-based controller with babel and ng-annotate/ngInject results in ReferenceError

I've an Angular 1.4 controller with a method that depends on a resource service. I've annotated the constructor of that class with

ng-annotate
, but still, Angular curses that service can't be found in the method:

var MyResourceFactory = require("myResource.service");

class MyController {
// @ngInject
constructor($location, $stateParams, $state, MyResource) {
... // some initialization code
}

myMethod(data) {
var resource = new MyResource();
resource.data = data;
resource.save();
}
}

module.exports = angular.module("MyModule", [])
.factory('MyResource', MyResourceFactory)
.controller('MyController', MyController)
.config(routes);


But, on the very first line of
myMethod
(
var resource = new MyResource()
) execution fails:

ReferenceError: MyResource is undefined
at MyController.myMethod (myModule.module.js:214)
...


Technologies used:


  • Angular 1.4

  • Webpack

  • Babel

  • ng-annotate



How to apply ngInject to an ECMA6-class method?

Answer

MyResource is a variable local to constructor method and it's not available outside. Usual approach in such cases, is to make it public property:

class MyController {
    // @ngInject
    constructor($location, $stateParams, $state, MyResource) {
        this.MyResource = MyResource;
        // ... some initialization code
    }

    myMethod(data) {
        var resource = new this.MyResource();
        resource.data = data;
        resource.save();
    }
}