Using grunt, is it possible to compile and output one modified file to another directory?

Question

A lot of source code files in the format /assets/src/coffee , etc. ( ./child/paths etc.) and I would like to output them to assets/js/ and assets/js/child/paths .

Looks like I came up, but it doesn't work. Using grunt-contrib-coffee and grunt-contrib-watch .

 grunt.initConfig watch: coffee: files: '<%= coffee.src %>', tasks: 'coffee:dev' options: nospawn: true coffee: src: 'assets/src/coffee/**/*.coffee' dev: options: sourceMap: true files: [ expand: true cwd: "assets/" src: "/src/coffee/**/*.coffee" dest: "../js/" ext: ".js" ] grunt.loadNpmTasks "grunt-contrib-coffee" grunt.loadNpmTasks 'grunt-contrib-watch' # Default task. grunt.registerTask "default", "watch" grunt.event.on('watch', (action, filepath) -> (grunt.log.writeln('\n'+ filepath + ' has ' + action)) dest = "#{path.dirname(filepath.replace("src/coffee", "js"))}" grunt.config(['coffee', 'dev', 'files', 'src'], [filepath]) grunt.config(['coffee', 'dev', 'files', 'dest'], [dest]) (grunt.log.writeln("src: #{grunt.config(['coffee', 'dev', 'files', 'src'])}")) (grunt.log.writeln("dest: #{grunt.config(['coffee', 'dev', 'files', 'dest'])}")) 

)

Ok, so the output of this looks like this:

 assets/src/coffee/projAlpha/dl.coffee has changed src: assets/src/coffee/projAlpha/dl.coffee dest: assets/js/projAlpha/dl.coffee 

but the file actually ends: assets/src/coffee/projAlpha/dl.coffee ... and a coffee script. It should be in assets/js/projAlpha/dl.js

I have a grunt coffee utility to compile all files at once and put them in the right place. I would prefer that they be compiled one at a time, though, since now I have several files, and I'm adding more and more.

Answer 1

In your glob-pattern file path configuration, I notice 2 problems:

• The parameters of the glob-template do not fall under the "files" key, but directly under the options key.
• CWD is for src files only. The dest directory do not use cwd, so you must specify the full path from the base directory (where your Grunt file is located).

---

 dev: options: sourceMap: true expand: true cwd: "assets/src/coffee/" src: "**/*.coffee" dest: "assets/js/" ext: ".js" 

This will move, for example, from assets/src/coffee/User/controller.coffee to assets/js/User/controller.js .