How to make grunt watch and grunt nodemon work together - node.js

Question

I have a web app in node.js that I want to start with nodemon, so everytime the main script changes, the webapp can start again.
At the same time, I have my coffeescript files that I need to recompile everytime any of them changes.
I've set up a grunt-contrib-watch task to listen just for app/frontend/*.coffee files, to dispatch the coffee parser.
However, this doesn't seem to be hapenning, since the nodemon task is also listening.
I set up app/frontend/ folder in nodemon ignore.
I also set up nodemon and watch as concurrent.
Still, everytime I edit a coffee script, the coffee task is not bein executed.
This is my Gruntfile
module.exports = function(grunt) {
// Project configuration.
grunt.initConfig({
concurrent: {
dev: [
'nodemon',
'watch'
],
options: {
logConcurrentOutput: true
}
},
coffee: {
compile: {
files: {
'app/public/app.js': ['app/frontend/*.coffee']
}
}
},
nodemon: {
dev: {
script: 'app/index.js',
options: {
ignore: ['app/frontend/**', 'app/public/**']
}
}
},
watch: {
scripts: {
files: 'app/frontend/*.coffee',
tasks: ['coffee'],
options: {
spawn: false
}
}
}
});
grunt.loadNpmTasks('grunt-concurrent');
grunt.loadNpmTasks('grunt-contrib-coffee');
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-nodemon');
// Default task(s).
grunt.registerTask('default', ['coffee', 'nodemon', 'watch']);
};

Answer 1

Your Gruntfile instructs Grunt to run nodemon and watch sequentially as the default task (and thus watch is never run as nodemon never finishes).
You need to explicitly include the concurrent task in the last line:
grunt.registerTask('default', ['coffee', 'concurrent']);