Bootstrap LESS setup with Bower Structure

Gruntfile.js

module.exports = function(grunt) {
 
    // Project configuration.
    grunt.initConfig({
 
        //Read the package.json (optional)
        pkg: grunt.file.readJSON('package.json'),
 
        // Metadata.
        meta: {
            basePath: '',
            srcPath: 'js/',
            deployPath: 'deploy/'
        },
 
        
        // ==================================
        // TASKS CONFIG


        // COPY FILES FROM SOURCE TO DEPLOY - https://github.com/gruntjs/grunt-contrib-copy
        // don't include '!X'
        copy: {
            deploy: {
                expand: true,
                src: ["*", "css/*.css", "img/*", "css/fonts/*",  "js/*/**", "!css/less", "!css/main.css", '!js/*.js', "!node_modules", "!dist", "!less", "!docs", "!grunt", "!Gruntfile.js", "!package.json", "!deploy", "!bower_components", "!test-infra", "!grunt", "!doc", "!docs", "!src"  ],
                dest: 'deploy/'
            }
        },


        // LESS - https://github.com/gruntjs/grunt-contrib-less
        less: {
          deploy: {
            options: {
              compress: true
            },
            files: [
                { src: ["less/bootstrap.less"], dest: "deploy/css/bootstrap.min.css"}
              ],
            }
        },

        


        // UGLIFY - https://github.com/gruntjs/grunt-contrib-uglify
        uglify: {
            deploy: {
              files: [
                    { src: ["js/scripts.js"], dest: "deploy/js/scripts.js"},
                    { src: ["js/plugins.js"], dest: "deploy/js/plugins.js"},
                    ],
                }
        },

        

        // CONNECT - Create server - https://github.com/gruntjs/grunt-contrib-connect
        connect: {
            server: {
              options: {
                port: 9999,
                base: 'deploy'
              }
            }
        },


        // CONCAT JS SCRIPTS
      concat: {
        deploy: {
          src: [
            'bower_components/bootstrap/js/transition.js',
            'bower_components/bootstrap/js/alert.js',
            'bower_components/bootstrap/js/button.js',
            'bower_components/bootstrap/js/carousel.js',
            'bower_components/bootstrap/js/collapse.js',
            'bower_components/bootstrap/js/dropdown.js',
            'bower_components/bootstrap/js/modal.js',
            'bower_components/bootstrap/js/tooltip.js',
            'bower_components/bootstrap/js/popover.js',
            'bower_components/bootstrap/js/scrollspy.js',
            'bower_components/bootstrap/js/tab.js',
            'bower_components/bootstrap/js/affix.js'
          ],
          dest: 'deploy/js/bootstrap.min.js'
        }
      },

        // WATCH FILES & FOLDERS - https://github.com/gruntjs/grunt-contrib-watch
        // Executes the listed targets on file save
        // Watches folders for file changes and then runs the specified tasks
        watch: {
            uglify: {
                files: ["js/script.js", "js/plugins.js"],
                tasks: ['uglify:deploy'],
                options: {
                    //interrupt: true
                }
            },
            less: {
                files: 'less/*.less',
                tasks: ['less:deploy'],
                options: {
                    //interrupt: true
                }
            },
            copy: {
                files: ["*", "css/*.css", "img/*", "css/fonts/*",  "js/*/**", "!css/less", "!css/main.css", '!js/*.js', "!node_modules", "!dist", "!less", "!docs", "!grunt", "!Gruntfile.js", "!package.json", "!deploy", "!bower_components", "!test-infra", "!grunt", "!doc", "!docs", "!src"  ],
                tasks: ['copy:deploy'],
                options: {
                    //interrupt: true,
                    //nospawn: true // commented out to make sure files are being copied to deploy on change
                }
            }
        }

    });
 
    // These plugins provide necessary tasks.
    grunt.loadNpmTasks('grunt-contrib-concat');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-contrib-copy');
    grunt.loadNpmTasks('grunt-contrib-concat');
    grunt.loadNpmTasks('grunt-contrib-less');
    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('grunt-contrib-connect');

    // Resigster tasks in order
    // Make sure WATCH is last
    grunt.registerTask('default', [ 'less', 'copy', 'uglify', 'concat', 'connect', 'watch']);
 
};