text: /*!
   * Bootstrap's Gruntfile
   * https://getbootstrap.com/
   * Copyright 2013-01 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
        },
        core: {
          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: true,
          mangle: true,
          ie8: true,
          output: {
            comments: /^!|@preserve|@license|@cc_on/i
          }
        },
        core: {
          src: '<%= concat.core.dest %>',
          dest: 'dist/js/<%= pkg.name %>.min.js'
        },
        customize: {
          src: configBridge.paths.customizerJs,
          dest: 'docs/assets/js/customize.min.js'
        },
        docs: {
          src: configBridge.paths.docsJs,
          dest: 'docs/assets/js/docs.min.js'
        }
      },
  
      less: {
        options: {
          ieCompat: true,
          strictMath: true,
          sourceMap: true,
          outputSourceFiles: true
        },
        core: {
          options: {
            sourceMapURL: '<%= pkg.name %>.css.map',
            sourceMapFilename: 'dist/css/<%= pkg.name %>.css.map'
          },
          src: 'less/bootstrap.less',
          dest: 'dist/css/<%= pkg.name %>.css'
        },
        theme: {
          options: {
            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'
        },
        docs: {
          options: {
            sourceMapURL: 'docs.css.map',
            sourceMapFilename: 'docs/assets/css/docs.css.map'
          },
          src: 'docs/assets/less/docs.less',
          dest: 'docs/assets/css/docs.css'
        },
        docsIe: {
          options: {
            sourceMap: false
          },
          src: 'docs/assets/less/ie10-viewport-bug-workaround.less',
          dest: 'docs/assets/css/ie10-viewport-bug-workaround.css'
        }
      },
  
      postcss: {
        options: {
          map: {
            inline: false,
            sourcesContent: true
          },
          processors: [
            require('autoprefixer')(configBridge.config.autoprefixer)
          ]
        },
        core: {
          src: 'dist/css/<%= pkg.name %>.css'
        },
        theme: {
          src: 'dist/css/<%= pkg.name %>-theme.css'
        },
        docs: {
          src: 'docs/assets/css/docs.css'
        },
        examples: {
          options: {
            map: false
          },
          expand: true,
          cwd: 'docs/examples/',
          src: ['**/*.css'],
          dest: 'docs/examples/'
        }
      },
  
      stylelint: {
        options: {
          configFile: 'grunt/.stylelintrc',
          reportNeedlessDisables: false
        },
        dist: [
          'less/**/*.less'
        ],
        docs: [
          'docs/assets/less/**/*.less'
        ],
        examples: [
          'docs/examples/**/*.css'
        ]
      },
  
      cssmin: {
        options: {
          compatibility: 'ie8',
          sourceMap: true,
          sourceMapInlineSources: true,
          level: {
            1: {
              specialComments: 'all'
            }
          }
        },
        core: {
          src: 'dist/css/<%= pkg.name %>.css',
          dest: 'dist/css/<%= pkg.name %>.min.css'
        },
        theme: {
          src: 'dist/css/<%= pkg.name %>-theme.css',
          dest: 'dist/css/<%= pkg.name %>-theme.min.css'
        },
        docs: {
          src: 'docs/assets/css/docs.css',
          dest: 'docs/assets/css/docs.min.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'
          }
        }
      },
  
      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: [
            'Element "img" is missing required attribute "src".'
          ],
          noLangDetect: true
        },
        src: ['_gh_pages/**/*.html', 'js/tests/**/*.html']
      },
  
      watch: {
        src: {
          files: '<%= jshint.core.src %>',
          tasks: ['jshint:core', 'exec:karma', 'concat']
        },
        test: {
          files: '<%= jshint.test.src %>',
          tasks: ['jshint:test', 'exec:karma']
        },
        less: {
          files: 'less/**/*.less',
          tasks: ['less', 'copy']
        },
        docs: {
          files: 'docs/assets/less/**/*.less',
          tasks: ['less']
        }
      },
  
      exec: {
        browserstack: {
          command: 'cross-env BROWSER=true karma start grunt/karma.conf.js'
        },
        karma: {
          command: 'karma start grunt/karma.conf.js'
        }
      }
    });
  
  
    // 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 typeof val === 'undefined' || val !== '0';
    };
  
    // Test task.
    var testSubtasks = [];
    // Skip core tests if running a different subset of the test suite
    if (runSubset('core')) {
      testSubtasks = testSubtasks.concat(['dist-css', 'dist-js', 'stylelint: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 BrowserStack tests if there's a BrowserStack access key
    if (typeof process.env.BROWSER_STACK_USERNAME !== 'undefined' &&
        // Skip BrowserStack if running a different subset of the test suite
        runSubset('browserstack') &&
        // Skip BrowserStack on Travis when [skip browserstack] is in the commit message
        isUndefOrNonZero(process.env.TWBS_DO_BROWSERSTACK)) {
      testSubtasks.push('exec:browserstack');
    }
  
    grunt.registerTask('test', testSubtasks);
    grunt.registerTask('test-js', ['jshint:core', 'jshint:test', 'jshint:grunt', 'jscs:core', 'jscs:test', 'jscs:grunt', 'exec:karma']);
  
    // JS distribution task.
    grunt.registerTask('dist-js', ['concat', 'uglify:core', 'commonjs']);
  
    // CSS distribution task.
    grunt.registerTask('dist-css', ['less:core', 'less:theme', 'postcss:core', 'postcss:theme', 'cssmin:core', 'cssmin:theme']);
  
    // 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.core.src');
      var destFilepath = 'dist/js/npm.js';
      generateCommonJSModule(grunt, srcFiles, destFilepath);
    });
  
    // Docs task.
    grunt.registerTask('docs-css', ['less:docs', 'less:docsIe', 'postcss:docs', 'postcss:examples', 'cssmin:docs']);
    grunt.registerTask('lint-docs-css', ['stylelint:docs', 'stylelint:examples']);
    grunt.registerTask('docs-js', ['uglify:docs', '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('prep-release', ['dist', 'docs', 'jekyll:github']);
  };
  