Grunt可以单独缩小多个文件，而不连接它们吗？

Question

I have a Sailsjs project, and it comes with Grunt built in. Here is what tasks/register/prod.js looks like:

module.exports = function(grunt) {
  grunt.registerTask('prod', [
    'compileAssets',
    //'concat',
    'uglify',
    'cssmin',
    'sails-linker:prodJs',
    'sails-linker:prodStyles',
    //'sails-linker:devTpl',
    //'sails-linker:prodJsJade',
    //'sails-linker:prodStylesJade',
    //'sails-linker:devTplJade'
  ]);
};

and here is my attempt to get Grunt to minify files separately tasks/config/cssmin.js :

module.exports = function(grunt) {

  grunt.config.set('cssmin', {
    dist: {
      src: 'assets/css/test.css',
      dest: '.tmp/public/min/test.min.css'
    }
  });

  grunt.config.set('cssmin', {
    dist: {
      src: 'assets/css/main.css',
      dest: '.tmp/public/min/main.min.css'
    }
  });

  grunt.loadNpmTasks('grunt-contrib-cssmin');
};

This doesn't work correctly, it only gives me main.min.css (minified) but not test.min.css.

Answer 1

"dist" is not a static part of the syntax, it's the name of the target. You can have as many targets as you want, but you can't have two with the same name.

grunt.config.set('cssmin', {
  test: {
    src: 'assets/css/test.css',
    dest: '.tmp/public/min/test.min.css'
  },
  main: {
    src: 'assets/css/main.css',
    dest: '.tmp/public/min/main.min.css'
  }
});

Running "cssmin" executes both targets, "cssmin:test" runs the first one and "cssmin:main" runs the second.

Answer 2

The second time you set the value for the cssmin task you are overwriting your previous value, thus you are only returned main.min.css.

To minify multiple separate files with cssmin you would only set grunt.config once and it would look like this:

module.exports = function(grunt) {

  grunt.config.set('cssmin', {

    dist: {
      src: 'assets/css/test.css',
      dest: '.tmp/public/min/test.min.css'
    },

    dist2: {
      src: 'assets/css/main.css',
      dest: '.tmp/public/min/main.min.css'
    }

  });

  grunt.loadNpmTasks('grunt-contrib-cssmin');
};