Automatic Grunt layout

grunt_layout.sh

#!/bin/sh 

function eject() {
    local msg=$1
    echo "$msg" 1>&2
    exit 1
}

npm init || eject "'npm init' failed"

packages="grunt grunt-contrib-uglify grunt-contrib-concat \
          grunt-contrib-jshint grunt-contrib-watch"
for p in $packages; do
    npm install --save-dev "$p" || eject "Failed to install '$p'"
done

cat << EOF > Gruntfile.js

module.exports = function(grunt) {

    grunt.initConfig({

        pkg: grunt.file.readJSON('package.json'),

        concat: {
            options: {
                separator: ';'
            },
            dist: {
                src: ['src/**/*.js'],
                dest: 'build/<%= pkg.name %>.cat.js'
            }
        },

        uglify: {
            options: {
                banner: '/*! <%= pkg.name %> <%= grunt.template.today("yyyy-mm-dd") %> */\n'
            },
            build: {
                src: '<%= concat.dist.dest %>',
                dest: 'build/<%= pkg.name %>.min.js'
            }
        },

        jshint: {
            files: ['src/**/*.js'],
            options: {
                globals: {
                    jQuery: true,
                    console: true,
                    module: true
                }
            }
        },

        watch: {
            files: ['<%= jshint.files %>'],
            tasks: ['jshint']
        }

    });

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

    grunt.registerTask('default', ['concat', 'uglify']);

};

EOF