text: /*!
   * Bootstrap's Gruntfile
   * http://getbootstrap.com
   * Copyright 2013-2016 Twitter, Inc.
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   */
  
  module.exports = function (grunt) {
      'use strict';
      
      // Force use of Unix newlines
      grunt.util.linefeed = '\n';
      
      RegExp.quote = function (string) {
          return string.replace(/[-\\^$*+?.()|[\]{}]/g, '\\$&');
      };
      
      var fs = require('fs');
      var path = require('path');
      var generateGlyphiconsData = require('./grunt/bs-glyphicons-data-generator.js');
      var BsLessdocParser = require('./grunt/bs-lessdoc-parser.js');
      var getLessVarsData = function () {
          var filePath = path.join(__dirname, 'less/variables.less');
          var fileContent = fs.readFileSync(filePath, { encoding: 'utf8' });
          var parser = new BsLessdocParser(fileContent);
          return { sections: parser.parseFile() };
      };
      var generateRawFiles = require('./grunt/bs-raw-files-generator.js');
      var generateCommonJSModule = require('./grunt/bs-commonjs-generator.js');
      var configBridge = grunt.file.readJSON('./grunt/configBridge.json', { encoding: 'utf8' });
      
      Object.keys(configBridge.paths).forEach(function (key) {
          configBridge.paths[key].forEach(function (val, i, arr) {
              arr[i] = path.join('./docs/assets', val);
          });
      });
      
      // Project configuration.
      grunt.initConfig({
          
          // Metadata.
          pkg: grunt.file.readJSON('package.json'),
          banner: '/*!\n' +
          ' * Bootstrap v<%= pkg.version %> (<%= pkg.homepage %>)\n' +
          ' * Copyright 2011-<%= grunt.template.today("yyyy") %> <%= pkg.author %>\n' +
          ' * Licensed under the <%= pkg.license %> license\n' +
          ' */\n',
          jqueryCheck: configBridge.config.jqueryCheck.join('\n'),
          jqueryVersionCheck: configBridge.config.jqueryVersionCheck.join('\n'),
          
          // Task configuration.
          clean: {
              dist: 'dist',
              docs: 'docs/dist'
          },
          
          jshint: {
              options: {
                  jshintrc: 'js/.jshintrc'
              },
              grunt: {
                  options: {
                      jshintrc: 'grunt/.jshintrc'
                  },
                  src: ['Gruntfile.js', 'package.js', 'grunt/*.js']
              },
              core: {
                  src: 'js/*.js'
              },
              test: {
                  options: {
                      jshintrc: 'js/tests/unit/.jshintrc'
                  },
                  src: 'js/tests/unit/*.js'
              },
              assets: {
                  src: ['docs/assets/js/src/*.js', 'docs/assets/js/*.js', '!docs/assets/js/*.min.js']
              }
          },
          
          jscs: {
              options: {
                  config: 'js/.jscsrc'
              },
              grunt: {
                  src: '<%= jshint.grunt.src %>'
              },
              core: {
                  src: '<%= jshint.core.src %>'
              },
              test: {
                  src: '<%= jshint.test.src %>'
              },
              assets: {
                  options: {
                      requireCamelCaseOrUpperCaseIdentifiers: null
                  },
                  src: '<%= jshint.assets.src %>'
              }
          },
          
          concat: {
              options: {
                  banner: '<%= banner %>\n<%= jqueryCheck %>\n<%= jqueryVersionCheck %>',
                  stripBanners: false
              },
              bootstrap: {
                  src: [
                      'js/transition.js',
                      'js/alert.js',
                      'js/button.js',
                      'js/carousel.js',
                      'js/collapse.js',
                      'js/dropdown.js',
                      'js/modal.js',
                      'js/tooltip.js',
                      'js/popover.js',
                      'js/scrollspy.js',
                      'js/tab.js',
                      'js/affix.js'
                  ],
                  dest: 'dist/js/<%= pkg.name %>.js'
              }
          },
          
          uglify: {
              options: {
                  compress: {
                      warnings: false
                  },
                  mangle: true,
                  preserveComments: /^!|@preserve|@license|@cc_on/i
              },
              core: {
                  src: '<%= concat.bootstrap.dest %>',
                  dest: 'dist/js/<%= pkg.name %>.min.js'
              },
              customize: {
                  src: configBridge.paths.customizerJs,
                  dest: 'docs/assets/js/customize.min.js'
              },
              docsJs: {
                  src: configBridge.paths.docsJs,
                  dest: 'docs/assets/js/docs.min.js'
              }
          },
          
          qunit: {
              options: {
                  inject: 'js/tests/unit/phantom.js'
              },
              files: 'js/tests/index.html'
          },
          
          less: {
              compileCore: {
                  options: {
                      strictMath: true,
                      sourceMap: true,
                      outputSourceFiles: true,
                      sourceMapURL: '<%= pkg.name %>.css.map',
                      sourceMapFilename: 'dist/css/<%= pkg.name %>.css.map'
                  },
                  src: 'less/bootstrap.less',
                  dest: 'dist/css/<%= pkg.name %>.css'
              },
              compileChain: {
                  options: {
                      strictMath: true,
                      sourceMap: true,
                      outputSourceFiles: true,
                      sourceMapURL: 'chain-style.css.map',
                      sourceMapFilename: 'dist/css/chain-style.css.map'
                  },
                  src: 'less/chain-style.less',
                  dest: 'dist/css/chain-style.css'
              },
              compileTheme: {
                  options: {
                      strictMath: true,
                      sourceMap: true,
                      outputSourceFiles: true,
                      sourceMapURL: '<%= pkg.name %>-theme.css.map',
                      sourceMapFilename: 'dist/css/<%= pkg.name %>-theme.css.map'
                  },
                  src: 'less/theme.less',
                  dest: 'dist/css/<%= pkg.name %>-theme.css'
              }
          },
          
          autoprefixer: {
              options: {
                  browsers: configBridge.config.autoprefixerBrowsers
              },
              core: {
                  options: {
                      map: true
                  },
                  src: 'dist/css/<%= pkg.name %>.css'
              },
              theme: {
                  options: {
                      map: true
                  },
                  src: 'dist/css/<%= pkg.name %>-theme.css'
              },
              docs: {
                  src: ['docs/assets/css/src/docs.css']
              },
              examples: {
                  expand: true,
                  cwd: 'docs/examples/',
                  src: ['**/*.css'],
                  dest: 'docs/examples/'
              }
          },
          
          csslint: {
              options: {
                  csslintrc: 'less/.csslintrc'
              },
              dist: [
                  'dist/css/bootstrap.css',
                  'dist/css/bootstrap-theme.css'
              ],
              examples: [
                  'docs/examples/**/*.css'
              ],
              docs: {
                  options: {
                      ids: false,
                      'overqualified-elements': false
                  },
                  src: 'docs/assets/css/src/docs.css'
              }
          },
          
          cssmin: {
              options: {
                  // TODO: disable `zeroUnits` optimization once clean-css 3.2 is released
                  //    and then simplify the fix for https://github.com/twbs/bootstrap/issues/14837 accordingly
                  compatibility: 'ie8',
                  keepSpecialComments: '*',
                  sourceMap: true,
                  sourceMapInlineSources: true,
                  advanced: false
              },
              minifyCore: {
                  src: 'dist/css/<%= pkg.name %>.css',
                  dest: 'dist/css/<%= pkg.name %>.min.css'
              },
              minifyChain: {
                  src: 'dist/css/chain-style.css',
                  dest: 'dist/css/chain-style.min.css'
              },
              minifyTheme: {
                  src: 'dist/css/<%= pkg.name %>-theme.css',
                  dest: 'dist/css/<%= pkg.name %>-theme.min.css'
              },
              docs: {
                  src: [
                      'docs/assets/css/ie10-viewport-bug-workaround.css',
                      'docs/assets/css/src/pygments-manni.css',
                      'docs/assets/css/src/docs.css'
                  ],
                  dest: 'docs/assets/css/docs.min.css'
              }
          },
          
          csscomb: {
              options: {
                  config: 'less/.csscomb.json'
              },
              dist: {
                  expand: true,
                  cwd: 'dist/css/',
                  src: ['*.css', '!*.min.css'],
                  dest: 'dist/css/'
              },
              examples: {
                  expand: true,
                  cwd: 'docs/examples/',
                  src: '**/*.css',
                  dest: 'docs/examples/'
              },
              docs: {
                  src: 'docs/assets/css/src/docs.css',
                  dest: 'docs/assets/css/src/docs.css'
              }
          },
          
          copy: {
              fonts: {
                  expand: true,
                  src: 'fonts/**',
                  dest: 'dist/'
              },
              docs: {
                  expand: true,
                  cwd: 'dist/',
                  src: [
                      '**/*'
                  ],
                  dest: 'docs/dist/'
              }
          },
          
          connect: {
              server: {
                  options: {
                      port: 3000,
                      base: '.'
                  }
              }
          },
          
          jekyll: {
              options: {
                  bundleExec: true,
                  config: '_config.yml',
                  incremental: false
              },
              docs: {},
              github: {
                  options: {
                      raw: 'github: true'
                  }
              }
          },
          
          htmlmin: {
              dist: {
                  options: {
                      collapseBooleanAttributes: true,
                      collapseWhitespace: true,
                      conservativeCollapse: true,
                      decodeEntities: false,
                      minifyCSS: {
                          compatibility: 'ie8',
                          keepSpecialComments: 0
                      },
                      minifyJS: true,
                      minifyURLs: false,
                      processConditionalComments: true,
                      removeAttributeQuotes: true,
                      removeComments: true,
                      removeOptionalAttributes: true,
                      removeOptionalTags: true,
                      removeRedundantAttributes: true,
                      removeScriptTypeAttributes: true,
                      removeStyleLinkTypeAttributes: true,
                      removeTagWhitespace: false,
                      sortAttributes: true,
                      sortClassName: true
                  },
                  expand: true,
                  cwd: '_gh_pages',
                  dest: '_gh_pages',
                  src: [
                      '**/*.html',
                      '!examples/**/*.html'
                  ]
              }
          },
          
          pug: {
              options: {
                  pretty: true,
                  data: getLessVarsData
              },
              customizerVars: {
                  src: 'docs/_pug/customizer-variables.pug',
                  dest: 'docs/_includes/customizer-variables.html'
              },
              customizerNav: {
                  src: 'docs/_pug/customizer-nav.pug',
                  dest: 'docs/_includes/nav/customize.html'
              }
          },
          
          htmllint: {
              options: {
                  ignore: [
                      'Attribute "autocomplete" not allowed on element "button" at this point.',
                      'Attribute "autocomplete" is only allowed when the input type is "color", "date", "datetime", "datetime-local", "email", "hidden", "month", "number", "password", "range", "search", "tel", "text", "time", "url", or "week".',
                      'Element "img" is missing required attribute "src".'
                  ]
              },
              src: '_gh_pages/**/*.html'
          },
          
          watch: {
              src: {
                  files: '<%= jshint.core.src %>',
                  tasks: ['jshint:core', 'qunit', 'concat']
              },
              test: {
                  files: '<%= jshint.test.src %>',
                  tasks: ['jshint:test', 'qunit']
              },
              less: {
                  files: 'less/**/*.less',
                  tasks: 'less'
              }
          },
          
          'saucelabs-qunit': {
              all: {
                  options: {
                      build: process.env.TRAVIS_JOB_ID,
                      throttled: 10,
                      maxRetries: 3,
                      maxPollRetries: 4,
                      urls: ['http://127.0.0.1:3000/js/tests/index.html?hidepassed'],
                      browsers: grunt.file.readYAML('grunt/sauce_browsers.yml')
                  }
              }
          },
          
          exec: {
              npmUpdate: {
                  command: 'npm update'
              }
          },
          
          compress: {
              main: {
                  options: {
                      archive: 'bootstrap-<%= pkg.version %>-dist.zip',
                      mode: 'zip',
                      level: 9,
                      pretty: true
                  },
                  files: [
                      {
                          expand: true,
                          cwd: 'dist/',
                          src: ['**'],
                          dest: 'bootstrap-<%= pkg.version %>-dist'
                      }
                  ]
              }
          }
          
      });
      
      
      // These plugins provide necessary tasks.
      require('load-grunt-tasks')(grunt, { scope: 'devDependencies' });
      require('time-grunt')(grunt);
      
      // Docs HTML validation task
      grunt.registerTask('validate-html', ['jekyll:docs', 'htmllint']);
      
      var runSubset = function (subset) {
          return !process.env.TWBS_TEST || process.env.TWBS_TEST === subset;
      };
      var isUndefOrNonZero = function (val) {
          return val === undefined || val !== '0';
      };
      
      // Test task.
      var testSubtasks = [];
      // Skip core tests if running a different subset of the test suite
      if (runSubset('core') &&
          // Skip core tests if this is a Savage build
          process.env.TRAVIS_REPO_SLUG !== 'twbs-savage/bootstrap') {
          testSubtasks = testSubtasks.concat(['dist-css', 'dist-js', 'csslint:dist', 'test-js', 'docs']);
      }
      // Skip HTML validation if running a different subset of the test suite
      if (runSubset('validate-html') &&
          // Skip HTML5 validator on Travis when [skip validator] is in the commit message
          isUndefOrNonZero(process.env.TWBS_DO_VALIDATOR)) {
          testSubtasks.push('validate-html');
      }
      // Only run Sauce Labs tests if there's a Sauce access key
      if (typeof process.env.SAUCE_ACCESS_KEY !== 'undefined' &&
          // Skip Sauce if running a different subset of the test suite
          runSubset('sauce-js-unit') &&
          // Skip Sauce on Travis when [skip sauce] is in the commit message
          isUndefOrNonZero(process.env.TWBS_DO_SAUCE)) {
          testSubtasks.push('connect');
          testSubtasks.push('saucelabs-qunit');
      }
      grunt.registerTask('test', testSubtasks);
      grunt.registerTask('test-js', ['jshint:core', 'jshint:test', 'jshint:grunt', 'jscs:core', 'jscs:test', 'jscs:grunt', 'qunit']);
      
      // JS distribution task.
      grunt.registerTask('dist-js', ['concat', 'uglify:core', 'commonjs']);
      
      // CSS distribution task.
      grunt.registerTask('less-compile', ['less:compileCore', 'less:compileChain', 'less:compileTheme']);
      grunt.registerTask('dist-css', ['less-compile', 'autoprefixer:core', 'autoprefixer:theme', 'csscomb:dist', 'cssmin:minifyCore', 'cssmin:minifyChain', 'cssmin:minifyTheme']);
      
      // Full distribution task.
      grunt.registerTask('dist', ['clean:dist', 'dist-css', 'copy:fonts', 'dist-js']);
      
      // Default task.
      grunt.registerTask('default', ['clean:dist', 'copy:fonts', 'test']);
      
      grunt.registerTask('build-glyphicons-data', function () { generateGlyphiconsData.call(this, grunt); });
      
      // task for building customizer
      grunt.registerTask('build-customizer', ['build-customizer-html', 'build-raw-files']);
      grunt.registerTask('build-customizer-html', 'pug');
      grunt.registerTask('build-raw-files', 'Add scripts/less files to customizer.', function () {
          var banner = grunt.template.process('<%= banner %>');
          generateRawFiles(grunt, banner);
      });
      
      grunt.registerTask('commonjs', 'Generate CommonJS entrypoint module in dist dir.', function () {
          var srcFiles = grunt.config.get('concat.bootstrap.src');
          var destFilepath = 'dist/js/npm.js';
          generateCommonJSModule(grunt, srcFiles, destFilepath);
      });
      
      // Docs task.
      grunt.registerTask('docs-css', ['autoprefixer:docs', 'autoprefixer:examples', 'csscomb:docs', 'csscomb:examples', 'cssmin:docs']);
      grunt.registerTask('lint-docs-css', ['csslint:docs', 'csslint:examples']);
      grunt.registerTask('docs-js', ['uglify:docsJs', 'uglify:customize']);
      grunt.registerTask('lint-docs-js', ['jshint:assets', 'jscs:assets']);
      grunt.registerTask('docs', ['docs-css', 'lint-docs-css', 'docs-js', 'lint-docs-js', 'clean:docs', 'copy:docs', 'build-glyphicons-data', 'build-customizer']);
      grunt.registerTask('docs-github', ['jekyll:github', 'htmlmin']);
      
      grunt.registerTask('prep-release', ['dist', 'docs', 'docs-github', 'compress']);
  };
  