Set cache-busing file revision using Grunt

Cache-bust Gruntfile.js

/* 
  Example using grunt-contrib-concat, but this should work with any package 
  Inject string-based timestamp into an output filename, e.g. vendor-min.ka2bct2u.js
*/

module.exports = function(grunt) {
  
  grunt.loadNpmTasks("grunt-contrib-concat");
  
  grunt.initConfig({
    revision: new Date().getTime().toString(36),
    concat: {
      options: {
        separator: ";",
      },
      vendor: {
        src: [
          "node_modules/some-pkg/pgk.min.js",
          "node_modules/some-pkg-extension/pgk-extension.min.js",
        ],
        dest: "deploy/public/vendor/vendor-min.<%= revision %>.js",
      }
    }
  });
  
  grunt.registerTask("Compile", "Concatenate vendor libraries", function(){
    grunt.task.run(["concat:vendor"]);    
  });

};