Merge pull request #19604 from twbs/fix-18559

Use vanilla npm shrinkwrap instead of uber/npm-shrinkwrap

Gruntfile.js

@@ -18,7 +18,6 @@ module.exports = function (grunt) {
   var fs = require('fs');
   var path = require('path');
   var isTravis = require('is-travis');
-  var npmShrinkwrap = require('npm-shrinkwrap');
   var mq4HoverShim = require('mq4-hover-shim');
   var autoprefixerSettings = require('./grunt/autoprefixer-settings.js');
   var autoprefixer = require('autoprefixer')(autoprefixerSettings);
@@ -490,20 +489,4 @@ module.exports = function (grunt) {
 
   // Publish to GitHub
   grunt.registerTask('publish', ['buildcontrol:pages']);
-
-  // Task for updating the cached npm packages used by the Travis build (which are controlled by test-infra/npm-shrinkwrap.json).
-  // This task should be run and the updated file should be committed whenever Bootstrap's dependencies change.
-  grunt.registerTask('update-shrinkwrap', ['exec:npmUpdate', '_update-shrinkwrap']);
-  grunt.registerTask('_update-shrinkwrap', function () {
-    var done = this.async();
-    npmShrinkwrap({ dev: true, dirname: __dirname }, function (err) {
-      if (err) {
-        grunt.fail.warn(err);
-      }
-      var dest = 'grunt/npm-shrinkwrap.json';
-      fs.renameSync('npm-shrinkwrap.json', dest);
-      grunt.log.writeln('File ' + dest.cyan + ' updated.');
-      done();
-    });
-  });
 };