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Uglify not working with Grunt Watch

I have a pretty basic setup with sass, watch and uglify but for some reason I can't get watch to detect when a js file is saved. It works fine for SCSS/CSS (compiles and reloads.) If I run 'grunt uglify' it bundles my JS files, and if watch is running (in another console instance) it will detect it and trigger the reload.
I've tried lots of combinations and I have a feeling it's something really dumb I'm doing/not doing but I'm just not seeing it.
my gruntfile.js:
module.exports = function(grunt) {
grunt.registerTask('default', ['sass', 'uglify']);
grunt.initConfig({
sass: {
dist: {
options: {
style: 'expanded'
},
files: { 'fivesixtwo.com/src/FiveSixTwo.com/wwwroot/css/main.css': 'fivesixtwo.com/src/FiveSixTwo.com/wwwroot/css/main.scss' }
}
},
uglify: {
my_target: {
files: {
'fivesixtwo.com/src/FiveSixTwo.com/wwwroot/js/site.js': [
'fivesixtwo.com/src/FiveSixTwo.com/wwwroot/lib/jquery/dist/jquery.js',
'fivesixtwo.com/src/FiveSixTwo.com/wwwroot/lib/*.js'
]
}
}
},
watch: {
options: {
livereload: 35729,
},
html: {
files: ['fivesixtwo.com/src/FiveSixTwo.com/Views/*.cshtml'],
},
sass: {
options: {
livereload: false
},
files: ['fivesixtwo.com/src/FiveSixTwo.com/wwwroot/css/*.scss'],
tasks: ['sass']
},
css: {
files: ['fivesixtwo.com/src/FiveSixTwo.com/wwwroot/css/main.css'],
tasks: []
},
scripts: {
files: ['fivesixtwo.com/src/FiveSixTwo.com/wwwroot/js/site.js'],
tasks: ['uglify']
}
}
});
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-contrib-sass');
grunt.loadNpmTasks('grunt-contrib-uglify');
};

Look at your watch config:
scripts: {
files: ['fivesixtwo.com/src/FiveSixTwo.com/wwwroot/js/site.js'],
tasks: ['uglify']
}
You are only watching for a single js files changes called site.js. To watch all your sources use this config:
scripts: {
files: ['fivesixtwo.com/src/FiveSixTwo.com/wwwroot/lib/*.js'],
tasks: ['uglify']
}
Use the same pattern as in the uglify config. I assumed you are not going to modify jquery itself.

Watch task doesn't compile sass files

So i am trying to set up my first grunt application, but i am struggling with the watch task.
When I run the task watch looks like it is working when i change my sass files, but the css files are not updated, so it looks like it is not compiling.
I am wondering if i need to install something else, for me this is all new... and i am not sure if I understand, because it looks very simple but I just cant make it work.
So here is my code
module.exports = function(grunt) {
// Project configuration.
grunt.initConfig({
watch:{
sass:{
options: {
livereload: true
},
files:['sass/**/*.scss'],
task:['sass']
},
css: {
files: ['css/*.css'],
tasks: []
}
},
sass: {
dist: {
files: [{
expand: true,
cwd: 'sass',
src: ['*.scss', '*.sass'],
dest: 'css/',
ext: '.css'
}]
}
}
});
grunt.loadNpmTasks('grunt-sass');
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.registerTask('default', ['sass']);
};

I think you want your livereload to be on the css files instead of scss. As it is the compiled file that you want to be reloaded and not the preprocessed (scss) file.
Example
watch:{
sass:{
files:['sass/**/*.scss'],
task:['sass']
},
css: {
options: {
livereload: true
},
files: ['css/*.css']
}
}

OWWWWW....
I just found the problem... it should have been "tasks" not "task", i wasted sooo much time, on finding this little thingy!

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');
}

File watcher for less in grunt not updating css

I have the following gruntfile.js code:
less: {
development: {
files: [{
expand: true,
cwd: 'assets/less',
src: ['*.less'],
dest: 'wwwroot/content/css/',
ext: '.css'
}]
}
},
watch: {
less: {
files: ["assets/less/*.less"],
task: ["less:development"]
}
};
grunt.loadNpmTasks("grunt-contrib-less");
grunt.loadNpmTasks("grunt-contrib-watch");
When I run the watch task and make changes on any of my less files, it detected the changes in the less files:
File "assets\less\abc.less" changed.
But the problem is it is not updating my abc.css file. Does anyone know why is this and how to fix it? Thanks

Heh... just had another question with this issue, and it's the same problem:
watch: {
less: {
files: ["assets/less/*.less"],
tasks: ["less:development"] // <-- note that this is PLURAL! :)
}
}

Grunt file does not complete

I have recently discovered grunt as it is used within an opensource project I have started to work on. Having not worked with grunt before I am struggling to see how it works, or in my case doesn't.
The grunt file is supplied by the project and I assume it works for everyone else. I have installed grunt and the necessary grunt modules have all installed in the "Node_modules" directory.
When running the grunt file the first process performs a number of concatenations and this seems to work fine. The concatenated files are created.
All of the other steps do not seem to execute. The files they are intended to create are not created. There is no error message displayed on the console when grunt is executed.
I'm stumped - anyone have any clues what might be the problem.
The grunt file is :
/*global module:false*/
module.exports = function(grunt) {
// Project configuration...
grunt.initConfig({
manifest: grunt.file.readJSON('chrome/manifest.json'),
concat: {
dist: {
src: ['chrome/js/requester/**/*.js'],
dest: 'chrome/js/requester.js'
},
requester_html: {
src: [
'chrome/html/requester/header.html',
'chrome/html/requester/sidebar.html',
'chrome/html/requester/main.html',
'chrome/html/requester/loggers/*.html',
'chrome/html/requester/modals/*.html',
'chrome/html/requester/footer.html'
],
dest: 'chrome/requester.html'
},
requester_tester: {
src: [
'chrome/html/requester/header.html',
'chrome/html/requester/sidebar.html',
'chrome/html/requester/main.html',
'chrome/html/requester/modals/*.html',
'chrome/html/requester/loggers/*.html',
'chrome/html/requester/footer.html',
'chrome/html/requester/tester.html'
],
dest: 'chrome/tester.html'
}
},
mindirect: {
dist: {
src: ['chrome/js/requester.js'],
dest: 'chrome/js/requester.min.js'
}
},
watch: {
requester_templates: {
files: ['chrome/html/requester/templates/*'],
tasks: ['handlebars'],
options: {
livereload: true
}
},
requester_js: {
files: ['chrome/js/requester/**/*.js'],
tasks: ['concat:dist'],
options: {
livereload: true
}
},
requester_html: {
files: ['chrome/html/requester/*', 'chrome/html/requester/modals/*', 'chrome/html/requester/loggers/*'],
tasks: ['concat:requester_html', 'concat:requester_tester'],
options: {
livereload: true
}
},
requester_css: {
files: ['chrome/css/**/*.scss'],
tasks: ['sass'],
options: {
livereload: true
}
}
},
jshint: {
options: {
curly: true,
eqeqeq: true,
immed: true,
latedef: true,
newcap: true,
noarg: true,
sub: true,
undef: true,
boss: true,
eqnull: true,
browser: true
},
globals: {
jQuery: true
}
},
handlebars: {
compile: {
options: {
partialsUseNamespace: true,
namespace: 'Handlebars.templates',
processPartialName: function(filePath) {
var pieces = filePath.split("/");
var name = pieces[pieces.length - 1].split(".")[0];
return name;
},
processName: function(filePath) {
var pieces = filePath.split("/");
var name = pieces[pieces.length - 1].split(".")[0];
return name;
}
},
files: {
"chrome/html/requester/templates.js": "chrome/html/requester/templates/*"
}
}
},
sass: {
dist: {
files: {
'chrome/css/requester/styles.css': 'chrome/css/requester/styles.scss'
}
}
},
compress: {
main: {
options: {
archive: 'releases/v<%= manifest.version %>.zip'
},
files: [
{src: ['chrome/**', '!chrome/tests/**', '!chrome/manifest_key.json', '!chrome/tester.html'], dest: '/'}, // includes files in path and its subdirs
]
}
}
});
// These plugins provide necessary tasks.
grunt.loadNpmTasks('grunt-contrib-handlebars');
grunt.loadNpmTasks('grunt-contrib-concat');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.loadNpmTasks('grunt-mindirect');
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-contrib-sass');
grunt.loadNpmTasks('grunt-contrib-compress');
// Default task.
grunt.registerTask('default', ['jshint', 'concat']);
grunt.registerTask('package', ['concat', 'handlebars', 'sass', 'compress']);
};
The output from the console is as follows :
Running "jshint:globals" (jshint) task
>> 0 files lint free.
Running "concat:dist" (concat) task
File "chrome/js/requester.js" created.
Running "concat:requester_html" (concat) task
File "chrome/requester.html" created.
Running "concat:requester_tester" (concat) task
File "chrome/tester.html" created.
Done, without errors.

Given that the tasks are defined like this:
grunt.registerTask('default', ['jshint', 'concat']);
grunt.registerTask('package', ['concat', 'handlebars', 'sass', 'compress']);
the output you show is what you'd expect if you are running grunt without a task name. It runs the jshint and concat tasks.
If you want to run the tasks associated with package, then you have to run grunt package to run those tasks.

It looks like I did not understand "tasks" within grunt.
Instead of executing "grunt" which runs the "default" tasks, I had to execute "grunt package" which runs the tasks that I was interested in.

As Louis said, you have to specify the right task to run.
But you can also create or modify the tasks you have in order to make it simpler. In your example you may include package in the default task. Because concat task is already executed inside package, you may just replace it in the default task:
grunt.registerTask('default', ['jshint', 'package']);
grunt.registerTask('package', ['concat', 'handlebars', 'sass', 'compress']);
and, in order to build your site, just type
grunt
both jshint and package tasks will be executed