When using a service, AngularJS can experience issues when the code is minified

Hello, I'm still learning AngularJS and trying my best to follow Todd Motto's Opinionated AngularJS Styleguide for Teams. I've encountered an issue while using Grunt to uglify my code - whenever I enable mangling, it throws an error:

Error: [$injector:unpr] Unknown provider: aProvider <- a

I believe this error is due to name mangling causing confusion in the injection process, specifically when resolving routes that rely on DataService. Despite my efforts to troubleshoot, I'm unsure where exactly to inject the correct name.

If you could take a look at my simplified code structure below, which includes dependencies on angular, angular-route, and data.json, and guide me on how to resolve this issue, I would greatly appreciate it.

File Structure

├── data.json
├── gruntfile.js
├── index.html
└── js
    ├── app
    │   └── app.js
    └── vendor
        ├── angular-route.js
        └── angular.js

gruntfile.js

module.exports = function(grunt) {
    // Task configurations here...
};

index.html

<!DOCTYPE html>
<html ng-app="app">
    <head>
        <meta charset="utf-8">
        <title>Mangled Names Test</title>
    </head>
    <body>

        <h2>I'm above the content</h2>
        <hr>
        <!-- Begin Content -->
        <div ng-view></div>
        <!-- End Content -->
        <hr>
        <h2>I'm below the content</h2>

        <!-- Begin Release Scripts -->
        <script src='js/vendor.min.js'></script>
        <script src='js/production.min.js'></script>
        <!-- End Release Scripts -->
    </body>
</html>

app.js

// App module setup and controller definitions here...

Answer №1

One possible solution is to include mangle:false in the uglify.debugVendor.options section. If that doesn't work, consider compiling vendor and your files together so uglify can access them within the same scope.

    uglify: {
        // ...
        debugVendor: {
            options: {
                mangle: false,
            },
        }

Answer №2

The service you are using is named DataService, so make sure to declare it in your configuration with the same name, like this:

.controller('DocumentCtrl', ['DataService', DocumentCtrl])

Based on the example you provided:

angular
    .module('app', ['ngRoute'])
    .factory('DataService', ['$http', DataService])
    .controller('DocumentCtrl', ['DataService', DocumentCtrl])
    .config(['$routeProvider', RouteConfig]);

Answer №3

Minify angularjs service name into simpler letters like a,b, .. . In order to achieve this, you need to modify the minification options:

options: {
    mangle: true,
},

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