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grunt uglify showing error

I am getting the error though all seems to be right in the code. Can someone help?
gruntfile.js
module.exports = function(grunt) {
// Project configuration.
grunt.initConfig({
//Setting up some base links
meta: {
basePath: '../'
},
//Reading package.json file
pkg: grunt.file.readJSON('package.json'),
// Concat Configuration
concat: {
options: {
separator: ';'
},
dist: {
src: ['<%= meta.basePath %>scripts/*.js'],
dest: '<%= meta.basePath %>scripts/concated.js'
}
},
// Uglify Configuration
uglify: {
build: {
src: ['<%= meta.basePath %>scripts/concated.js'],
dest: '<%= meta.basePath %>scripts/uglify.js'
}
}
});
// These plugins provide necessary tasks.
grunt.loadNpmTasks('grunt-contrib-concat','grunt-contrib-uglify');
// Default task
grunt.registerTask('default', ['concat','uglify']);
};
ERROR
Already seen the links:
grunt uglify task failing
new to grunt - warning: task "concat, uglify" not found
However, "grunt concat" runs fine and provide results. No issues. But this uglify seems to create a lot of pain.

try this excerpt from http://gruntjs.com/configuring-task:
uglify: {
static_mappings: {
// Because these src-dest file mappings are manually specified, every
// time a new file is added or removed, the Gruntfile has to be updated.
files: [
{ src: 'lib/a.js', dest: 'build/a.min.js' },
{ src: 'lib/b.js', dest: 'build/b.min.js' },
{ src: 'lib/subdir/c.js', dest: 'build/subdir/c.min.js' },
{ src: 'lib/subdir/d.js', dest: 'build/subdir/d.min.js' },
]
}
}

Grunt-Browserify Ignore Option

I have a React app that I am transforming, uglifying and browserfying via Grunt. My grunt file looks like this...
module.exports = function(grunt) {
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
browserify: {
dist: {
files: {
'./Scripts/build/App.js': ['./Scripts/src/**/*.js']
},
options: {
browserifyOptions: {
debug: true
},
transform: [ require('grunt-react').browserify ],
ignore: './Scripts/src/**/*-test.js'
}
}
},
uglify: {
my_target: {
files: {
'./Scripts/build/App-min.js': ['./Scripts/build/App.js']
}
}
},
watch: {
scripts: {
files: ['./Scripts/src/**/*.js'],
tasks: ['browserify', 'uglify'],
options: {
spawn: false
},
},
},
})
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.loadNpmTasks('grunt-browserify');
grunt.loadNpmTasks('grunt-contrib-watch');
}
You will notice the ignore property of the browserify task is telling it to ignore any file with -test.js in the filename, the reason being that my tests are stored in folders directly next to the file I am testing (as seems to be the convention when looking at the React Flux examples) and I don't want the test files being bundled in to my app.js file. Can anyone tell me if I am doing this wrong because so far it doesnt seem to be working at all? The test files get bundled into app.js and then I get console errors about jest not being defined.

Did a bit of lateral Googling and found a post on stack Here
It seems that you can add files to the src array and if you prefix them with a '!' it marks them as ignored files.
My now working grunt file....
module.exports = function(grunt) {
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
browserify: {
dist: {
files: {
'./Scripts/build/App.js': ['./Scripts/src/**/*.js', '!./Scripts/src/**/*-test.js']
},
options: {
browserifyOptions: {
debug: true
},
transform: [ require('grunt-react').browserify ]
}
}
},
uglify: {
my_target: {
files: {
'./Scripts/build/App-min.js': ['./Scripts/build/App.js']
}
}
},
jest: {
options: {
coverage: true,
testPathPattern: /.*-test.js/
}
},
watch: {
scripts: {
files: ['./Scripts/src/**/*.js'],
tasks: ['browserify', 'uglify'],
options: {
spawn: false
},
},
},
})
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.loadNpmTasks('grunt-jest');
grunt.loadNpmTasks('grunt-browserify');
grunt.loadNpmTasks('grunt-contrib-watch');
}

grunt watch & connect

I am kinda new to grunt and want to use it with Jekyll and some LESS-compiling.
My problem now is, I already have fully functioning LESS-comipiling with live reload and watch task and can build my jekyll site through grunt, but how do I run something like the jekyll serve or grunt-connect and grunt watch simultaneously?
I want a grunt task that provides the watching of my LESS-files etc, builds the jekyll site and then runs a small web server with grunt-connect or whatever.
My Gruntfile.js so far:
'use strict';
module.exports = function (grunt) {
grunt.initConfig({
jshint: {
options: {
jshintrc: '.jshintrc'
},
all: [
'Gruntfile.js',
'js/*.js',
'!js/scripts.min.js'
]
},
less: {
dist: {
files: {
'css/styles.min.css': [
'less/app.less'
]
},
options: {
compress: true,
// LESS source map
// To enable, set sourceMap to true and update sourceMapRootpath based on your install
sourceMap: false,
sourceMapFilename: 'css/styles.min.css.map',
sourceMapRootpath: '/'
}
},
dev: {
files: {
'css/styles.min.css': [
'less/app.less'
]
},
options: {
compress: false,
// LESS source map
// To enable, set sourceMap to true and update sourceMapRootpath based on your install
sourceMap: true,
sourceMapFilename: 'css/styles.min.css.map',
sourceMapRootpath: '/'
}
}
},
uglify: {
dist: {
files: {
'js/scripts.min.js': [
'vendor/bootstrap/js/transition.js',
'vendor/bootstrap/js/alert.js',
'vendor/bootstrap/js/button.js',
'vendor/bootstrap/js/carousel.js',
'vendor/bootstrap/js/collapse.js',
'vendor/bootstrap/js/dropdown.js',
'vendor/bootstrap/js/modal.js',
'vendor/bootstrap/js/tooltip.js',
'vendor/bootstrap/js/popover.js',
'vendor/bootstrap/js/scrollspy.js',
'vendor/bootstrap/js/tab.js',
'vendor/bootstrap/js/affix.js',
'vendor/*.js',
'js/_*.js'
]
},
options: {
// JS source map: to enable, uncomment the lines below and update sourceMappingURL based on your install
// sourceMap: 'assets/js/scripts.min.js.map',
// sourceMappingURL: '/app/themes/roots/assets/js/scripts.min.js.map'
}
}
},
watch: {
less: {
files: [
'less/*.less',
'less/bootstrap/*.less'
],
tasks: ['less:dev']
},
js: {
files: [
'<%= jshint.all %>'
],
tasks: ['jshint', 'uglify']
},
livereload: {
// Browser live reloading
// https://github.com/gruntjs/grunt-contrib-watch#live-reloading
options: {
livereload: true
},
files: [
'_site/*'
]
}
},
clean: {
dist: [
'css/styles.min.css',
'css/styles.min.css.map',
'js/scripts.min.js',
'_site/*'
]
},
jekyll: { // Task
options: { // Universal options
bundleExec: true,
src : '<%= app %>'
},
dist: { // Target
options: { // Target options
dest: '<%= dist %>',
config: '_config.yml'
}
},
serve: { // Another target
options: {
serve: true,
drafts: true
}
}
},
connect: {
server: {
options: {
keepalive: true
}
}
}
});
// Load tasks
grunt.loadNpmTasks('grunt-contrib-clean');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-contrib-less');
grunt.loadNpmTasks('grunt-jekyll');
grunt.loadNpmTasks('grunt-contrib-connect');
// Register tasks
grunt.registerTask('default', [
'clean',
'less:dist',
'uglify',
'jekyll:dist'
]);
grunt.registerTask('dev', [
'watch'
]);
};

You need to tell connect what directory to serve up in the configuration using the "base" option, in this case it would be the static _site directory. You can also change the port to whatever you want, but you end up navigating to localhost:9009 with my example
connect: {
server: {
options: {
livereload: true,
base: '_site/',
port: 9009
}
}
}
You will also want to add a watch task for when you change your html templates. Something like this would work.
watch: {
html: {
files: ['**/*.html', '!_site/**/*.html'],
tasks: ['jekyll:dist']
}
}
Then create a "serve" task like Wallace suggested.
// Start web server
grunt.registerTask('serve', [
'jekyll:dist',
'connect:server',
'watch'
]);
Lastly run "grunt serve" in the command line and navigate to localhost with the port you specified.
As commented by #jiggy
The key change is to not set keepalive to true. Keepalive will block
all subsequent tasks from running. So long as connect is followed by
watch the server won't terminate.

I spent 2 days desperately trying every gruntfile-configuration I could find on the internet. Never worked. Then I found this https://stackoverflow.com/a/24765175/1541141.
Use grunt-contrib-connect, NOT grunt-connect. grunt-connect is blocking...
Hope it helps.

I think the heart of your solution is to create a new task or edit an existing task, like so:
// Start web server
grunt.registerTask('serve', [
'jekyll:dist',
'connect:livereload',
'watch'
]);
...which you would run with a $ grunt serve. less, jshint, uglify and connect are already included under watch.

How to output two files using grunt durandal

I am having a go at grunt for optimizing my Durandal SPA. It seems to work great but now I would like to output a second file called libs.js which is the merged uglified version of all my required libraries but my first dist is getting ignored and still the only file I get is main-built.js
I only get one file so app/libs.js never gets created. I also have no grunt errors.
Here is my Gruntfile:
module.exports = function (grunt) {
grunt.initConfig({
durandal: {
libs: {
src: [
"../scripts/jquery-1.9.1.js",
"../scripts/typeahead.js",
"../scripts/jquery-ui-1.10.3.js",
"../scripts/knockout-3.0.0rc.js",
"../scripts/toastr.js",
"../scripts/q.js",
"../scripts/breeze.min.js",
"../scripts/bootstrap.js",
"../scripts/moment.js",
"../scripts/lodash.js",
"../scripts/respond.js",
"../scripts/knockout-sortable.js",
"../scripts/knockout-bootstrap.js",
"../scripts/knockout.validation.js",
],
dest: 'scripts/libs.js',
options: {
uglify2: {
compress: {
global_defs: {
DEBUG: false
}
}
}
}
},
dist: {
src: [
"app/**/*.*",
"scripts/durandal/**/*.*"
],
options: {
baseUrl: "app/",
mainPath: "app/main.js",
out: "app/main-built.js",
uglify2: {
compress: {
global_defs: {
DEBUG: false
}
}
}
}
}
}
});
grunt.loadTasks('tasks');
grunt.registerTask('default', ['durandal']);
};

This is JavaScript. If you create an object like { a: 'a', a: 'b' }, the first key will be overwritten by the second by the VM.
Instead of configuring it like this:
dist: {
// config goes here
},
dist: {
// config goes here
}
Try
libs: {
// config goes here
},
main: {
// config goes here
}

Alternate grunt.js tasks for development/production environments

I would really love to be able to have a development grunt file and using the same file an production version of the script.
I have tried the suggestion on SO but my script will just fail when trying to call a dev/prod argument. I believe that the answer is for an older version of grunt, or maybe the plugins I am using.
module.exports = function (grunt) {
// load all grunt tasks
require('matchdep').filterDev('grunt-*').forEach(grunt.loadNpmTasks);
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
compass: {
dev: {
options: {
config: 'config.rb',
force: true,
livereload: true
}
}
},
uglify: {
build: {
src: ['docroot/js/*.js', 'docroot/components/**/*.js'],
dest: 'docroot/dis/main.min.js'
}
},
watch: {
options: {
dateFormat: function(time) {
grunt.log.writeln('The watch finished in ' + time + 'ms at' + (new Date()).toString());
grunt.log.writeln('Waiting for more changes...');
},
livereload: true
},
sass: {
files: ['docroot/sass/*.scss'],
tasks: ['compass:dev']
},
/* watch and see if our javascript files change, or new packages are installed */
js: {
files: '<%= uglify.build.src %>',
tasks: ['uglify']
},
/* watch our files for change, reload */
livereload: {
files: ['*.html', 'docroot/css/*.css', 'docroot/img/*', 'docroot/js/{main.min.js, plugins.min.js}'],
options: {
livereload: true
}
}
}
});
grunt.registerTask('default', 'watch');
};
Really, so long as I can get two version running by calling them with, for example:
grunt //local
grunt prod //live
then I can play around with the scripts and what to load.

You can also just register a task that calls an array of tasks
grunt.registerTask('prod', ['tasks1','task2']);
before your default task, that would be
$ grunt prod