Reproduces conditions for grunt-ng-config to throw: Warning: An error occurred while processing a template (Cannot read property 'js' of undefined).

Gruntfile.js

module.exports = function (grunt) {
    'use strict';

    // Project configuration.
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),

        jshint: {
            src: [
                'source/js/**/*.js',
                'Gruntfile.js'
            ],
            options: {
                curly: true,
                immed: true,
                newcap: true,
                noarg: true,
                sub: true,
                boss: true,
                eqnull: true
            },
            globals: {}
        },

        ngconstant: {
            options: {
                space: '  '
            },
            development: {
                constants: {
                    API_CONFIG: {
                        baseUrl: 'http://localhost:8080/bl-server/api'
                    }
                },
                dest: 'source/js/env-config.js',
                name: 'bl.environment-config',
                wrap: 'define(["angular"], function (angular) {\n"use strict";\n<%= __ngModule %>});'
            }
        }
    });

    grunt.loadNpmTasks('grunt-contrib-jshint');
    grunt.loadNpmTasks('grunt-ng-constant');

};

package.json

{
    "author": "bla-bla",
    "name": "bla",
    "version": "0.2.0",
    "homepage": "http://bla",
    "licenses": {
    "type": "MIT",
        "url": "https://raw.github.com/joshdmiller/ng-boilerplate/master/LICENSE"
    },
    "bugs": "http://bla/bugs",
    "repository": {
    "type": "git",
        "url": "git@github.com:joshdmiller/ng-boilerplate.git"
    },
    "dependencies": {},
    "devDependencies": {
        "grunt": "~0.4.1",
        "grunt-contrib-jshint": "~0.4.3",
        "grunt-ng-constant": "latest"
}
}