Example of using TFS with Grunt (not that you would want to do this, but it can work). Employs the grunt-shell task so that TFS targets play well with other tasks that spawn (like grunt-contrib-compass).

tfscheckout

//
// Example showing how to use TFS with grunt.
// Plays well with grunt-contrib-compass and other tasks that spawn processes.
// This example only shows tf checkout, but you could reuse this pattern to add more tf commands.
//
// Gist by https://github.com/localnerve, http://www.localnerve.com
//
var path = require("path");

module.exports = function(grunt) {

  // Load all grunt dev deps, including grunt-shell
  require("matchdep").filterDev("grunt-*").forEach(grunt.loadNpmTasks);

  // The project config
  var projectConfig = {

    // the style directory
    styles: "styles",

    // the scripts directory
    scripts: "scripts",
    
    // the markup directory
    markup: "markup",

    // the current working directory for TF.exe
    // shown here is 32bit, vs2012. For 64bit, use program files (x86)
    tfcwd: "c:/Program Files/Microsoft Visual Studio 11.0/Common7/IDE",

    // the tf command for checkout
    tfcheckout: "tf.exe checkout"
  };

  // Configure grunt tasks
  grunt.initConfig({
    
    project: projectConfig,

    // grunt-shell used for TFS
    // task provided by https://github.com/sindresorhus/grunt-shell
    shell: {
      // task options
      options: {
        stdout: true,
        stderr: true,
        failOnError: true,
        execOptions: {
          cwd: "<%= project.tfcwd %>"
        }
      },
      
      // target to checkout all css
      "checkout-css": {
        command: grunt.util._.map([
          path.resolve("<%= project.styles %>")+path.sep+"*.css"//,
          // add other paths here
        ], function(p) {
          // for each path, run the checkout command, could add /recursive flag too
          return "<%= project.tfcheckout %> "+p;
        }).join(" && ")
        // && sequentially runs commands, if there is a failure, it stops
      },

      // target to checkout all js
      "checkout-js": {
        command: grunt.util._.map([
          path.resolve("<%= project.scripts %>")+path.sep+"*.js"//,
          // add other paths here
        ], function(p) {
          // for each path, run the checkout command, could add /recursive flag too
          return "<%= project.tfcheckout %> "+p;
        }).join(" && ")
        // && sequentially runs commands, if there is a failure, it stops
      },

      // target to checkout all markup
      "checkout-markup": {
        command: grunt.util._.map([
          path.resolve("<%= project.markup %>")+path.sep+"*.aspx"//,
          // add other paths here
        ], function(p) {
          // for each path, run the checkout command, could add /recursive flag too
          return "<%= project.tfcheckout %> "+p;
        }).join(" && ")
        // && sequentially runs commands, if there is a failure, it stops
      }//,

      // add other TFS targets/commands, etc
    }//,

    // add other task configs, etc
  });

  // checkout all
  grunt.registerTask("default", ["shell"]);

  // checkout css
  grunt.registerTask("css", ["shell:checkout-css"]);

  // checkout js
  grunt.registerTask("js", ["shell:checkout-js"]);

  // checkout markup
  grunt.registerTask("markup", ["shell:checkout-markup"]);

};