module.exports = function(grunt) {

    grunt.initConfig({
        concat: {
            dist: {
                src: ['src/foo.js', 'src/bar.js'],
                dest: 'dist/output.js'
            }
        },
        jshint: {
            beforeconcat: ['src/foo.js', 'src/bar.js'],
            afterconcat: ['dist/output.js']
        },
        sass: {                                  // Task
            dist: {                              // Target
                options: {                       // Target options
                    style: 'expanded'
                },
                files: {                         // Dictionary of files
                    'css/calculator.css': 'css/calculator.scss'
                }
            }
        },
        uglify: {
            options: {
                mangle: false
            },
            my_target: {
                files: {
                    'dest/output.min.js': ['src/input.js']
                }
            }
        },
        cssmin: {
            options: {
                shorthandCompacting: false,
                roundingPrecision: -1
            },
            target: {
                files: {
                    'output.css': ['foo.css', 'bar.css']
                }
            }
        },
        watch: {
            files: ['css/calculator.scss'],
            tasks: ['sass']
        }
    });

    grunt.loadNpmTasks('grunt-contrib-concat');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-contrib-jshint');
    grunt.loadNpmTasks('grunt-contrib-sass');
    grunt.loadNpmTasks('grunt-contrib-cssmin');
    grunt.loadNpmTasks('grunt-contrib-watch');

    grunt.registerTask('default', ['watch']);

};