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node_modules/clean-css/lib/clean.js

@@ -0,0 +1,241 @@
+/**
+ * Clean-css - https://github.com/clean-css/clean-css
+ * Released under the terms of MIT license
+ */
+
+var level0Optimize = require('./optimizer/level-0/optimize');
+var level1Optimize = require('./optimizer/level-1/optimize');
+var level2Optimize = require('./optimizer/level-2/optimize');
+var validator = require('./optimizer/validator');
+
+var compatibilityFrom = require('./options/compatibility');
+var fetchFrom = require('./options/fetch');
+var formatFrom = require('./options/format').formatFrom;
+var inlineFrom = require('./options/inline');
+var inlineRequestFrom = require('./options/inline-request');
+var inlineTimeoutFrom = require('./options/inline-timeout');
+var OptimizationLevel = require('./options/optimization-level').OptimizationLevel;
+var optimizationLevelFrom = require('./options/optimization-level').optimizationLevelFrom;
+var pluginsFrom = require('./options/plugins');
+var rebaseFrom = require('./options/rebase');
+var rebaseToFrom = require('./options/rebase-to');
+
+var inputSourceMapTracker = require('./reader/input-source-map-tracker');
+var readSources = require('./reader/read-sources');
+
+var serializeStyles = require('./writer/simple');
+var serializeStylesAndSourceMap = require('./writer/source-maps');
+
+var CleanCSS = module.exports = function CleanCSS(options) {
+  options = options || {};
+
+  this.options = {
+    batch: !!options.batch,
+    compatibility: compatibilityFrom(options.compatibility),
+    explicitRebaseTo: 'rebaseTo' in options,
+    fetch: fetchFrom(options.fetch),
+    format: formatFrom(options.format),
+    inline: inlineFrom(options.inline),
+    inlineRequest: inlineRequestFrom(options.inlineRequest),
+    inlineTimeout: inlineTimeoutFrom(options.inlineTimeout),
+    level: optimizationLevelFrom(options.level),
+    plugins: pluginsFrom(options.plugins),
+    rebase: rebaseFrom(options.rebase, options.rebaseTo),
+    rebaseTo: rebaseToFrom(options.rebaseTo),
+    returnPromise: !!options.returnPromise,
+    sourceMap: !!options.sourceMap,
+    sourceMapInlineSources: !!options.sourceMapInlineSources
+  };
+};
+
+// for compatibility with optimize-css-assets-webpack-plugin
+CleanCSS.process = function(input, opts) {
+  var cleanCss;
+  var optsTo = opts.to;
+
+  delete opts.to;
+  cleanCss = new CleanCSS(Object.assign({
+    returnPromise: true, rebaseTo: optsTo
+  }, opts));
+
+  return cleanCss.minify(input)
+    .then(function(output) {
+      return { css: output.styles };
+    });
+};
+
+CleanCSS.prototype.minify = function(input, maybeSourceMap, maybeCallback) {
+  var options = this.options;
+
+  if (options.returnPromise) {
+    return new Promise(function(resolve, reject) {
+      minifyAll(input, options, maybeSourceMap, function(errors, output) {
+        return errors
+          ? reject(errors)
+          : resolve(output);
+      });
+    });
+  }
+  return minifyAll(input, options, maybeSourceMap, maybeCallback);
+};
+
+function minifyAll(input, options, maybeSourceMap, maybeCallback) {
+  if (options.batch && Array.isArray(input)) {
+    return minifyInBatchesFromArray(input, options, maybeSourceMap, maybeCallback);
+  } if (options.batch && (typeof input == 'object')) {
+    return minifyInBatchesFromHash(input, options, maybeSourceMap, maybeCallback);
+  }
+  return minify(input, options, maybeSourceMap, maybeCallback);
+}
+
+function minifyInBatchesFromArray(input, options, maybeSourceMap, maybeCallback) {
+  var callback = typeof maybeCallback == 'function'
+    ? maybeCallback
+    : (typeof maybeSourceMap == 'function' ? maybeSourceMap : null);
+  var errors = [];
+  var outputAsHash = {};
+  var inputValue;
+  var i, l;
+
+  function whenHashBatchDone(innerErrors, output) {
+    outputAsHash = Object.assign(outputAsHash, output);
+
+    if (innerErrors !== null) {
+      errors = errors.concat(innerErrors);
+    }
+  }
+
+  for (i = 0, l = input.length; i < l; i++) {
+    if (typeof input[i] == 'object') {
+      minifyInBatchesFromHash(input[i], options, whenHashBatchDone);
+    } else {
+      inputValue = input[i];
+
+      outputAsHash[inputValue] = minify([inputValue], options);
+      errors = errors.concat(outputAsHash[inputValue].errors);
+    }
+  }
+
+  return callback
+    ? callback(errors.length > 0 ? errors : null, outputAsHash)
+    : outputAsHash;
+}
+
+function minifyInBatchesFromHash(input, options, maybeSourceMap, maybeCallback) {
+  var callback = typeof maybeCallback == 'function'
+    ? maybeCallback
+    : (typeof maybeSourceMap == 'function' ? maybeSourceMap : null);
+  var errors = [];
+  var outputAsHash = {};
+  var inputKey;
+  var inputValue;
+
+  for (inputKey in input) {
+    inputValue = input[inputKey];
+
+    outputAsHash[inputKey] = minify(inputValue.styles, options, inputValue.sourceMap);
+    errors = errors.concat(outputAsHash[inputKey].errors);
+  }
+
+  return callback
+    ? callback(errors.length > 0 ? errors : null, outputAsHash)
+    : outputAsHash;
+}
+
+function minify(input, options, maybeSourceMap, maybeCallback) {
+  var sourceMap = typeof maybeSourceMap != 'function'
+    ? maybeSourceMap
+    : null;
+  var callback = typeof maybeCallback == 'function'
+    ? maybeCallback
+    : (typeof maybeSourceMap == 'function' ? maybeSourceMap : null);
+  var context = {
+    stats: {
+      efficiency: 0,
+      minifiedSize: 0,
+      originalSize: 0,
+      startedAt: Date.now(),
+      timeSpent: 0
+    },
+    cache: { specificity: {} },
+    errors: [],
+    inlinedStylesheets: [],
+    inputSourceMapTracker: inputSourceMapTracker(),
+    localOnly: !callback,
+    options: options,
+    source: null,
+    sourcesContent: {},
+    validator: validator(options.compatibility),
+    warnings: []
+  };
+  var implicitRebaseToWarning;
+
+  if (sourceMap) {
+    context.inputSourceMapTracker.track(undefined, sourceMap);
+  }
+
+  if (options.rebase && !options.explicitRebaseTo) {
+    implicitRebaseToWarning = 'You have set `rebase: true` without giving `rebaseTo` option, which, in this case, defaults to the current working directory. '
+      + 'You are then warned this can lead to unexpected URL rebasing (aka here be dragons)! '
+      + 'If you are OK with the clean-css output, then you can get rid of this warning by giving clean-css a `rebaseTo: process.cwd()` option.';
+    context.warnings.push(implicitRebaseToWarning);
+  }
+
+  return runner(context.localOnly)(function() {
+    return readSources(input, context, function(tokens) {
+      var serialize = context.options.sourceMap
+        ? serializeStylesAndSourceMap
+        : serializeStyles;
+
+      var optimizedTokens = optimize(tokens, context);
+      var optimizedStyles = serialize(optimizedTokens, context);
+      var output = withMetadata(optimizedStyles, context);
+
+      return callback
+        ? callback(context.errors.length > 0 ? context.errors : null, output)
+        : output;
+    });
+  });
+}
+
+function runner(localOnly) {
+  // to always execute code asynchronously when a callback is given
+  // more at blog.izs.me/post/59142742143/designing-apis-for-asynchrony
+  return localOnly
+    ? function(callback) { return callback(); }
+    : process.nextTick;
+}
+
+function optimize(tokens, context) {
+  var optimized = level0Optimize(tokens, context);
+
+  optimized = OptimizationLevel.One in context.options.level
+    ? level1Optimize(tokens, context)
+    : tokens;
+  optimized = OptimizationLevel.Two in context.options.level
+    ? level2Optimize(tokens, context, true)
+    : optimized;
+
+  return optimized;
+}
+
+function withMetadata(output, context) {
+  output.stats = calculateStatsFrom(output.styles, context);
+  output.errors = context.errors;
+  output.inlinedStylesheets = context.inlinedStylesheets;
+  output.warnings = context.warnings;
+
+  return output;
+}
+
+function calculateStatsFrom(styles, context) {
+  var finishedAt = Date.now();
+  var timeSpent = finishedAt - context.stats.startedAt;
+
+  delete context.stats.startedAt;
+  context.stats.timeSpent = timeSpent;
+  context.stats.efficiency = 1 - styles.length / context.stats.originalSize;
+  context.stats.minifiedSize = styles.length;
+
+  return context.stats;
+}

node_modules/clean-css/lib/optimizer/clone.js

@@ -0,0 +1,33 @@
+var wrapSingle = require('./wrap-for-optimizing').single;
+
+var Token = require('../tokenizer/token');
+
+function deep(property) {
+  var cloned = shallow(property);
+  for (var i = property.components.length - 1; i >= 0; i--) {
+    var component = shallow(property.components[i]);
+    component.value = property.components[i].value.slice(0);
+    cloned.components.unshift(component);
+  }
+
+  cloned.dirty = true;
+  cloned.value = property.value.slice(0);
+
+  return cloned;
+}
+
+function shallow(property) {
+  var cloned = wrapSingle([
+    Token.PROPERTY,
+    [Token.PROPERTY_NAME, property.name]
+  ]);
+  cloned.important = property.important;
+  cloned.hack = property.hack;
+  cloned.unused = false;
+  return cloned;
+}
+
+module.exports = {
+  deep: deep,
+  shallow: shallow
+};

node_modules/clean-css/lib/optimizer/configuration/can-override.js

@@ -0,0 +1,314 @@
+var understandable = require('./properties/understandable');
+
+function animationIterationCount(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true)
+    && !(validator.isAnimationIterationCountKeyword(value2) || validator.isPositiveNumber(value2))) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  }
+
+  return validator.isAnimationIterationCountKeyword(value2) || validator.isPositiveNumber(value2);
+}
+
+function animationName(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true)
+    && !(validator.isAnimationNameKeyword(value2) || validator.isIdentifier(value2))) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  }
+
+  return validator.isAnimationNameKeyword(value2) || validator.isIdentifier(value2);
+}
+
+function areSameFunction(validator, value1, value2) {
+  if (!validator.isFunction(value1) || !validator.isFunction(value2)) {
+    return false;
+  }
+
+  var function1Name = value1.substring(0, value1.indexOf('('));
+  var function2Name = value2.substring(0, value2.indexOf('('));
+
+  var function1Value = value1.substring(function1Name.length + 1, value1.length - 1);
+  var function2Value = value2.substring(function2Name.length + 1, value2.length - 1);
+
+  if (validator.isFunction(function1Value) || validator.isFunction(function2Value)) {
+    return function1Name === function2Name && areSameFunction(validator, function1Value, function2Value);
+  }
+  return function1Name === function2Name;
+}
+
+function backgroundPosition(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true)
+    && !(validator.isBackgroundPositionKeyword(value2) || validator.isGlobal(value2))) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  } if (validator.isBackgroundPositionKeyword(value2) || validator.isGlobal(value2)) {
+    return true;
+  }
+
+  return unit(validator, value1, value2);
+}
+
+function backgroundSize(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true)
+    && !(validator.isBackgroundSizeKeyword(value2) || validator.isGlobal(value2))) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  } if (validator.isBackgroundSizeKeyword(value2) || validator.isGlobal(value2)) {
+    return true;
+  }
+
+  return unit(validator, value1, value2);
+}
+
+function color(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true) && !validator.isColor(value2)) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  } if (!validator.colorOpacity && (validator.isRgbColor(value1) || validator.isHslColor(value1))) {
+    return false;
+  } if (!validator.colorOpacity && (validator.isRgbColor(value2) || validator.isHslColor(value2))) {
+    return false;
+  } if (!validator.colorHexAlpha && (validator.isHexAlphaColor(value1) || validator.isHexAlphaColor(value2))) {
+    return false;
+  } if (validator.isColor(value1) && validator.isColor(value2)) {
+    return true;
+  }
+
+  return sameFunctionOrValue(validator, value1, value2);
+}
+
+function components(overrideCheckers) {
+  return function(validator, value1, value2, position) {
+    return overrideCheckers[position](validator, value1, value2);
+  };
+}
+
+function fontFamily(validator, value1, value2) {
+  return understandable(validator, value1, value2, 0, true);
+}
+
+function image(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true) && !validator.isImage(value2)) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  } if (validator.isImage(value2)) {
+    return true;
+  } if (validator.isImage(value1)) {
+    return false;
+  }
+
+  return sameFunctionOrValue(validator, value1, value2);
+}
+
+function keyword(propertyName) {
+  return function(validator, value1, value2) {
+    if (!understandable(validator, value1, value2, 0, true) && !validator.isKeyword(propertyName)(value2)) {
+      return false;
+    } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+      return true;
+    }
+
+    return validator.isKeyword(propertyName)(value2);
+  };
+}
+
+function keywordWithGlobal(propertyName) {
+  return function(validator, value1, value2) {
+    if (!understandable(validator, value1, value2, 0, true)
+      && !(validator.isKeyword(propertyName)(value2) || validator.isGlobal(value2))) {
+      return false;
+    } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+      return true;
+    }
+
+    return validator.isKeyword(propertyName)(value2) || validator.isGlobal(value2);
+  };
+}
+
+function propertyName(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true) && !validator.isIdentifier(value2)) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  }
+
+  return validator.isIdentifier(value2);
+}
+
+function sameFunctionOrValue(validator, value1, value2) {
+  return areSameFunction(validator, value1, value2)
+    ? true
+    : value1 === value2;
+}
+
+function textShadow(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true)
+    && !(validator.isUnit(value2)
+    || validator.isColor(value2)
+    || validator.isGlobal(value2))) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  }
+
+  return validator.isUnit(value2) || validator.isColor(value2) || validator.isGlobal(value2);
+}
+
+function time(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true) && !validator.isTime(value2)) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  } if (validator.isTime(value1) && !validator.isTime(value2)) {
+    return false;
+  } if (validator.isTime(value2)) {
+    return true;
+  } if (validator.isTime(value1)) {
+    return false;
+  } if (validator.isFunction(value1)
+    && !validator.isPrefixed(value1)
+    && validator.isFunction(value2)
+    && !validator.isPrefixed(value2)) {
+    return true;
+  }
+
+  return sameFunctionOrValue(validator, value1, value2);
+}
+
+function timingFunction(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true)
+    && !(validator.isTimingFunction(value2) || validator.isGlobal(value2))) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  }
+
+  return validator.isTimingFunction(value2) || validator.isGlobal(value2);
+}
+
+function unit(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true) && !validator.isUnit(value2)) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  } if (validator.isUnit(value1) && !validator.isUnit(value2)) {
+    return false;
+  } if (validator.isUnit(value2)) {
+    return true;
+  } if (validator.isUnit(value1)) {
+    return false;
+  } if (validator.isFunction(value1)
+    && !validator.isPrefixed(value1)
+    && validator.isFunction(value2)
+    && !validator.isPrefixed(value2)) {
+    return true;
+  }
+
+  return sameFunctionOrValue(validator, value1, value2);
+}
+
+function unitOrKeywordWithGlobal(propertyName) {
+  var byKeyword = keywordWithGlobal(propertyName);
+
+  return function(validator, value1, value2) {
+    return unit(validator, value1, value2) || byKeyword(validator, value1, value2);
+  };
+}
+
+function unitOrNumber(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true)
+    && !(validator.isUnit(value2)
+    || validator.isNumber(value2))) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  } if ((validator.isUnit(value1)
+    || validator.isNumber(value1))
+    && !(validator.isUnit(value2)
+    || validator.isNumber(value2))) {
+    return false;
+  } if (validator.isUnit(value2) || validator.isNumber(value2)) {
+    return true;
+  } if (validator.isUnit(value1) || validator.isNumber(value1)) {
+    return false;
+  } if (validator.isFunction(value1)
+    && !validator.isPrefixed(value1)
+    && validator.isFunction(value2)
+    && !validator.isPrefixed(value2)) {
+    return true;
+  }
+
+  return sameFunctionOrValue(validator, value1, value2);
+}
+
+function zIndex(validator, value1, value2) {
+  if (!understandable(validator, value1, value2, 0, true) && !validator.isZIndex(value2)) {
+    return false;
+  } if (validator.isVariable(value1) && validator.isVariable(value2)) {
+    return true;
+  }
+
+  return validator.isZIndex(value2);
+}
+
+module.exports = {
+  generic: {
+    color: color,
+    components: components,
+    image: image,
+    propertyName: propertyName,
+    time: time,
+    timingFunction: timingFunction,
+    unit: unit,
+    unitOrNumber: unitOrNumber
+  },
+  property: {
+    animationDirection: keywordWithGlobal('animation-direction'),
+    animationFillMode: keyword('animation-fill-mode'),
+    animationIterationCount: animationIterationCount,
+    animationName: animationName,
+    animationPlayState: keywordWithGlobal('animation-play-state'),
+    backgroundAttachment: keyword('background-attachment'),
+    backgroundClip: keywordWithGlobal('background-clip'),
+    backgroundOrigin: keyword('background-origin'),
+    backgroundPosition: backgroundPosition,
+    backgroundRepeat: keyword('background-repeat'),
+    backgroundSize: backgroundSize,
+    bottom: unitOrKeywordWithGlobal('bottom'),
+    borderCollapse: keyword('border-collapse'),
+    borderStyle: keywordWithGlobal('*-style'),
+    clear: keywordWithGlobal('clear'),
+    cursor: keywordWithGlobal('cursor'),
+    display: keywordWithGlobal('display'),
+    float: keywordWithGlobal('float'),
+    left: unitOrKeywordWithGlobal('left'),
+    fontFamily: fontFamily,
+    fontStretch: keywordWithGlobal('font-stretch'),
+    fontStyle: keywordWithGlobal('font-style'),
+    fontVariant: keywordWithGlobal('font-variant'),
+    fontWeight: keywordWithGlobal('font-weight'),
+    listStyleType: keywordWithGlobal('list-style-type'),
+    listStylePosition: keywordWithGlobal('list-style-position'),
+    outlineStyle: keywordWithGlobal('*-style'),
+    overflow: keywordWithGlobal('overflow'),
+    position: keywordWithGlobal('position'),
+    right: unitOrKeywordWithGlobal('right'),
+    textAlign: keywordWithGlobal('text-align'),
+    textDecoration: keywordWithGlobal('text-decoration'),
+    textOverflow: keywordWithGlobal('text-overflow'),
+    textShadow: textShadow,
+    top: unitOrKeywordWithGlobal('top'),
+    transform: sameFunctionOrValue,
+    verticalAlign: unitOrKeywordWithGlobal('vertical-align'),
+    visibility: keywordWithGlobal('visibility'),
+    whiteSpace: keywordWithGlobal('white-space'),
+    zIndex: zIndex
+  }
+};

node_modules/clean-css/lib/optimizer/configuration/properties/understandable.js

@@ -0,0 +1,15 @@
+var sameVendorPrefixes = require('../../vendor-prefixes').same;
+
+function understandable(validator, value1, value2, _position, isPaired) {
+  if (!sameVendorPrefixes(value1, value2)) {
+    return false;
+  }
+
+  if (isPaired && validator.isVariable(value1) !== validator.isVariable(value2)) {
+    return false;
+  }
+
+  return true;
+}
+
+module.exports = understandable;

node_modules/clean-css/lib/optimizer/configuration/restore.js

@@ -0,0 +1,294 @@
+var shallowClone = require('../clone').shallow;
+
+var Token = require('../../tokenizer/token');
+var Marker = require('../../tokenizer/marker');
+
+function isInheritOnly(values) {
+  for (var i = 0, l = values.length; i < l; i++) {
+    var value = values[i][1];
+
+    if (value != 'inherit' && value != Marker.COMMA && value != Marker.FORWARD_SLASH) { return false; }
+  }
+
+  return true;
+}
+
+function background(property, configuration, lastInMultiplex) {
+  var components = property.components;
+  var restored = [];
+  var needsOne, needsBoth;
+
+  function restoreValue(component) {
+    Array.prototype.unshift.apply(restored, component.value);
+  }
+
+  function isDefaultValue(component) {
+    var descriptor = configuration[component.name];
+
+    if (descriptor.doubleValues && descriptor.defaultValue.length == 1) {
+      return component.value[0][1] == descriptor.defaultValue[0]
+        && (component.value[1]
+          ? component.value[1][1] == descriptor.defaultValue[0]
+          : true);
+    } if (descriptor.doubleValues && descriptor.defaultValue.length != 1) {
+      return component.value[0][1] == descriptor.defaultValue[0]
+      && ((component.value[1] ? component.value[1][1] : component.value[0][1])
+        == descriptor.defaultValue[1]);
+    }
+    return component.value[0][1] == descriptor.defaultValue;
+  }
+
+  for (var i = components.length - 1; i >= 0; i--) {
+    var component = components[i];
+    var isDefault = isDefaultValue(component);
+
+    if (component.name == 'background-clip') {
+      var originComponent = components[i - 1];
+      var isOriginDefault = isDefaultValue(originComponent);
+
+      needsOne = component.value[0][1] == originComponent.value[0][1];
+
+      needsBoth = !needsOne && (
+        (isOriginDefault && !isDefault)
+        || (!isOriginDefault && !isDefault)
+        || (!isOriginDefault && isDefault && component.value[0][1] != originComponent.value[0][1]));
+
+      if (needsOne) {
+        restoreValue(originComponent);
+      } else if (needsBoth) {
+        restoreValue(component);
+        restoreValue(originComponent);
+      }
+
+      i--;
+    } else if (component.name == 'background-size') {
+      var positionComponent = components[i - 1];
+      var isPositionDefault = isDefaultValue(positionComponent);
+
+      needsOne = !isPositionDefault && isDefault;
+
+      needsBoth = !needsOne
+        && (isPositionDefault && !isDefault || !isPositionDefault && !isDefault);
+
+      if (needsOne) {
+        restoreValue(positionComponent);
+      } else if (needsBoth) {
+        restoreValue(component);
+        restored.unshift([Token.PROPERTY_VALUE, Marker.FORWARD_SLASH]);
+        restoreValue(positionComponent);
+      } else if (positionComponent.value.length == 1) {
+        restoreValue(positionComponent);
+      }
+
+      i--;
+    } else {
+      if (isDefault || configuration[component.name].multiplexLastOnly && !lastInMultiplex) { continue; }
+
+      restoreValue(component);
+    }
+  }
+
+  if (restored.length === 0 && property.value.length == 1 && property.value[0][1] == '0') { restored.push(property.value[0]); }
+
+  if (restored.length === 0) { restored.push([Token.PROPERTY_VALUE, configuration[property.name].defaultValue]); }
+
+  if (isInheritOnly(restored)) { return [restored[0]]; }
+
+  return restored;
+}
+
+function borderRadius(property) {
+  if (property.multiplex) {
+    var horizontal = shallowClone(property);
+    var vertical = shallowClone(property);
+
+    for (var i = 0; i < 4; i++) {
+      var component = property.components[i];
+
+      var horizontalComponent = shallowClone(property);
+      horizontalComponent.value = [component.value[0]];
+      horizontal.components.push(horizontalComponent);
+
+      var verticalComponent = shallowClone(property);
+      // FIXME: only shorthand compactor (see breakup#borderRadius) knows that border radius
+      // longhands have two values, whereas tokenizer does not care about populating 2nd value
+      // if it's missing, hence this fallback
+      verticalComponent.value = [component.value[1] || component.value[0]];
+      vertical.components.push(verticalComponent);
+    }
+
+    var horizontalValues = fourValues(horizontal);
+    var verticalValues = fourValues(vertical);
+
+    if (horizontalValues.length == verticalValues.length
+        && horizontalValues[0][1] == verticalValues[0][1]
+        && (horizontalValues.length > 1 ? horizontalValues[1][1] == verticalValues[1][1] : true)
+        && (horizontalValues.length > 2 ? horizontalValues[2][1] == verticalValues[2][1] : true)
+        && (horizontalValues.length > 3 ? horizontalValues[3][1] == verticalValues[3][1] : true)) {
+      return horizontalValues;
+    }
+    return horizontalValues.concat([[Token.PROPERTY_VALUE, Marker.FORWARD_SLASH]]).concat(verticalValues);
+  }
+  return fourValues(property);
+}
+
+function font(property, configuration) {
+  var components = property.components;
+  var restored = [];
+  var component;
+  var componentIndex = 0;
+  var fontFamilyIndex = 0;
+
+  if (property.value[0][1].indexOf(Marker.INTERNAL) === 0) {
+    property.value[0][1] = property.value[0][1].substring(Marker.INTERNAL.length);
+    return property.value;
+  }
+
+  // first four components are optional
+  while (componentIndex < 4) {
+    component = components[componentIndex];
+
+    if (component.value[0][1] != configuration[component.name].defaultValue) {
+      Array.prototype.push.apply(restored, component.value);
+    }
+
+    componentIndex++;
+  }
+
+  // then comes font-size
+  Array.prototype.push.apply(restored, components[componentIndex].value);
+  componentIndex++;
+
+  // then may come line-height
+  if (components[componentIndex].value[0][1] != configuration[components[componentIndex].name].defaultValue) {
+    Array.prototype.push.apply(restored, [[Token.PROPERTY_VALUE, Marker.FORWARD_SLASH]]);
+    Array.prototype.push.apply(restored, components[componentIndex].value);
+  }
+
+  componentIndex++;
+
+  // then comes font-family
+  while (components[componentIndex].value[fontFamilyIndex]) {
+    restored.push(components[componentIndex].value[fontFamilyIndex]);
+
+    if (components[componentIndex].value[fontFamilyIndex + 1]) {
+      restored.push([Token.PROPERTY_VALUE, Marker.COMMA]);
+    }
+
+    fontFamilyIndex++;
+  }
+
+  if (isInheritOnly(restored)) {
+    return [restored[0]];
+  }
+
+  return restored;
+}
+
+function fourValues(property) {
+  var components = property.components;
+  var value1 = components[0].value[0];
+  var value2 = components[1].value[0];
+  var value3 = components[2].value[0];
+  var value4 = components[3].value[0];
+
+  if (value1[1] == value2[1] && value1[1] == value3[1] && value1[1] == value4[1]) {
+    return [value1];
+  } if (value1[1] == value3[1] && value2[1] == value4[1]) {
+    return [value1, value2];
+  } if (value2[1] == value4[1]) {
+    return [value1, value2, value3];
+  }
+  return [value1, value2, value3, value4];
+}
+
+function multiplex(restoreWith) {
+  return function(property, configuration) {
+    if (!property.multiplex) { return restoreWith(property, configuration, true); }
+
+    var multiplexSize = 0;
+    var restored = [];
+    var componentMultiplexSoFar = {};
+    var i, l;
+
+    // At this point we don't know what's the multiplex size, e.g. how many background layers are there
+    for (i = 0, l = property.components[0].value.length; i < l; i++) {
+      if (property.components[0].value[i][1] == Marker.COMMA) { multiplexSize++; }
+    }
+
+    for (i = 0; i <= multiplexSize; i++) {
+      var _property = shallowClone(property);
+
+      // We split multiplex into parts and restore them one by one
+      for (var j = 0, m = property.components.length; j < m; j++) {
+        var componentToClone = property.components[j];
+        var _component = shallowClone(componentToClone);
+        _property.components.push(_component);
+
+        // The trick is some properties has more than one value, so we iterate over values looking for
+        // a multiplex separator - a comma
+        for (var k = componentMultiplexSoFar[_component.name] || 0, n = componentToClone.value.length; k < n; k++) {
+          if (componentToClone.value[k][1] == Marker.COMMA) {
+            componentMultiplexSoFar[_component.name] = k + 1;
+            break;
+          }
+
+          _component.value.push(componentToClone.value[k]);
+        }
+      }
+
+      // No we can restore shorthand value
+      var lastInMultiplex = i == multiplexSize;
+      var _restored = restoreWith(_property, configuration, lastInMultiplex);
+      Array.prototype.push.apply(restored, _restored);
+
+      if (i < multiplexSize) { restored.push([Token.PROPERTY_VALUE, Marker.COMMA]); }
+    }
+
+    return restored;
+  };
+}
+
+function withoutDefaults(property, configuration) {
+  var components = property.components;
+  var restored = [];
+
+  for (var i = components.length - 1; i >= 0; i--) {
+    var component = components[i];
+    var descriptor = configuration[component.name];
+
+    if (component.value[0][1] != descriptor.defaultValue || ('keepUnlessDefault' in descriptor) && !isDefault(components, configuration, descriptor.keepUnlessDefault)) {
+      restored.unshift(component.value[0]);
+    }
+  }
+
+  if (restored.length === 0) { restored.push([Token.PROPERTY_VALUE, configuration[property.name].defaultValue]); }
+
+  if (isInheritOnly(restored)) { return [restored[0]]; }
+
+  return restored;
+}
+
+function isDefault(components, configuration, propertyName) {
+  var component;
+  var i, l;
+
+  for (i = 0, l = components.length; i < l; i++) {
+    component = components[i];
+
+    if (component.name == propertyName && component.value[0][1] == configuration[propertyName].defaultValue) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+module.exports = {
+  background: background,
+  borderRadius: borderRadius,
+  font: font,
+  fourValues: fourValues,
+  multiplex: multiplex,
+  withoutDefaults: withoutDefaults
+};

node_modules/clean-css/lib/optimizer/hack.js

@@ -0,0 +1,8 @@
+var Hack = {
+  ASTERISK: 'asterisk',
+  BANG: 'bang',
+  BACKSLASH: 'backslash',
+  UNDERSCORE: 'underscore'
+};
+
+module.exports = Hack;

node_modules/clean-css/lib/optimizer/invalid-property-error.js

@@ -0,0 +1,10 @@
+function InvalidPropertyError(message) {
+  this.name = 'InvalidPropertyError';
+  this.message = message;
+  this.stack = (new Error()).stack;
+}
+
+InvalidPropertyError.prototype = Object.create(Error.prototype);
+InvalidPropertyError.prototype.constructor = InvalidPropertyError;
+
+module.exports = InvalidPropertyError;

node_modules/clean-css/lib/optimizer/level-0/optimize.js

@@ -0,0 +1,6 @@
+function level0Optimize(tokens) {
+  // noop as level 0 means no optimizations!
+  return tokens;
+}
+
+module.exports = level0Optimize;

node_modules/clean-css/lib/optimizer/level-1/optimize.js

@@ -0,0 +1,325 @@
+var sortSelectors = require('./sort-selectors');
+var tidyRules = require('./tidy-rules');
+var tidyBlock = require('./tidy-block');
+var tidyAtRule = require('./tidy-at-rule');
+
+var Hack = require('../hack');
+var removeUnused = require('../remove-unused');
+var restoreFromOptimizing = require('../restore-from-optimizing');
+var wrapForOptimizing = require('../wrap-for-optimizing').all;
+
+var configuration = require('../configuration');
+var optimizers = require('./value-optimizers');
+
+var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;
+
+var Token = require('../../tokenizer/token');
+var Marker = require('../../tokenizer/marker');
+
+var formatPosition = require('../../utils/format-position');
+
+var serializeRules = require('../../writer/one-time').rules;
+
+var CHARSET_TOKEN = '@charset';
+var CHARSET_REGEXP = new RegExp('^' + CHARSET_TOKEN, 'i');
+
+var DEFAULT_ROUNDING_PRECISION = require('../../options/rounding-precision').DEFAULT;
+
+var VARIABLE_PROPERTY_NAME_PATTERN = /^--\S+$/;
+var PROPERTY_NAME_PATTERN = /^(?:-chrome-|-[\w-]+\w|\w[\w-]+\w|\w{1,})$/;
+var IMPORT_PREFIX_PATTERN = /^@import/i;
+var URL_PREFIX_PATTERN = /^url\(/i;
+
+function startsAsUrl(value) {
+  return URL_PREFIX_PATTERN.test(value);
+}
+
+function isImport(token) {
+  return IMPORT_PREFIX_PATTERN.test(token[1]);
+}
+
+function isLegacyFilter(property) {
+  var value;
+
+  if (property.name == 'filter' || property.name == '-ms-filter') {
+    value = property.value[0][1];
+
+    return value.indexOf('progid') > -1
+      || value.indexOf('alpha') === 0
+      || value.indexOf('chroma') === 0;
+  }
+  return false;
+}
+
+function noop() {}
+
+function noopValueOptimizer(_name, value, _options) { return value; }
+
+function optimizeBody(rule, properties, context) {
+  var options = context.options;
+  var valueOptimizers;
+  var property, name, type, value;
+  var propertyToken;
+  var propertyOptimizer;
+  var serializedRule = serializeRules(rule);
+  var _properties = wrapForOptimizing(properties);
+  var pluginValueOptimizers = context.options.plugins.level1Value;
+  var pluginPropertyOptimizers = context.options.plugins.level1Property;
+  var isVariable;
+  var i, l;
+
+  for (i = 0, l = _properties.length; i < l; i++) {
+    var j, k, m, n;
+
+    property = _properties[i];
+    name = property.name;
+    propertyOptimizer = configuration[name] && configuration[name].propertyOptimizer || noop;
+    valueOptimizers = configuration[name] && configuration[name].valueOptimizers || [optimizers.whiteSpace];
+    isVariable = VARIABLE_PROPERTY_NAME_PATTERN.test(name);
+
+    if (isVariable) {
+      valueOptimizers = options.variableOptimizers.length > 0
+        ? options.variableOptimizers
+        : [optimizers.whiteSpace];
+    }
+
+    if (!isVariable && !PROPERTY_NAME_PATTERN.test(name)) {
+      propertyToken = property.all[property.position];
+      context.warnings.push('Invalid property name \'' + name + '\' at ' + formatPosition(propertyToken[1][2][0]) + '. Ignoring.');
+      property.unused = true;
+      continue;
+    }
+
+    if (property.value.length === 0) {
+      propertyToken = property.all[property.position];
+      context.warnings.push('Empty property \'' + name + '\' at ' + formatPosition(propertyToken[1][2][0]) + '. Ignoring.');
+      property.unused = true;
+      continue;
+    }
+
+    if (property.hack && (
+      (property.hack[0] == Hack.ASTERISK || property.hack[0] == Hack.UNDERSCORE)
+        && !options.compatibility.properties.iePrefixHack
+        || property.hack[0] == Hack.BACKSLASH && !options.compatibility.properties.ieSuffixHack
+        || property.hack[0] == Hack.BANG && !options.compatibility.properties.ieBangHack)) {
+      property.unused = true;
+      continue;
+    }
+
+    if (!options.compatibility.properties.ieFilters && isLegacyFilter(property)) {
+      property.unused = true;
+      continue;
+    }
+
+    if (property.block) {
+      optimizeBody(rule, property.value[0][1], context);
+      continue;
+    }
+
+    for (j = 0, m = property.value.length; j < m; j++) {
+      type = property.value[j][0];
+      value = property.value[j][1];
+
+      if (type == Token.PROPERTY_BLOCK) {
+        property.unused = true;
+        context.warnings.push('Invalid value token at ' + formatPosition(value[0][1][2][0]) + '. Ignoring.');
+        break;
+      }
+
+      if (startsAsUrl(value) && !context.validator.isUrl(value)) {
+        property.unused = true;
+        context.warnings.push('Broken URL \'' + value + '\' at ' + formatPosition(property.value[j][2][0]) + '. Ignoring.');
+        break;
+      }
+
+      for (k = 0, n = valueOptimizers.length; k < n; k++) {
+        value = valueOptimizers[k](name, value, options);
+      }
+
+      for (k = 0, n = pluginValueOptimizers.length; k < n; k++) {
+        value = pluginValueOptimizers[k](name, value, options);
+      }
+
+      property.value[j][1] = value;
+    }
+
+    propertyOptimizer(serializedRule, property, options);
+
+    for (j = 0, m = pluginPropertyOptimizers.length; j < m; j++) {
+      pluginPropertyOptimizers[j](serializedRule, property, options);
+    }
+  }
+
+  restoreFromOptimizing(_properties);
+  removeUnused(_properties);
+  removeComments(properties, options);
+}
+
+function removeComments(tokens, options) {
+  var token;
+  var i;
+
+  for (i = 0; i < tokens.length; i++) {
+    token = tokens[i];
+
+    if (token[0] != Token.COMMENT) {
+      continue;
+    }
+
+    optimizeComment(token, options);
+
+    if (token[1].length === 0) {
+      tokens.splice(i, 1);
+      i--;
+    }
+  }
+}
+
+function optimizeComment(token, options) {
+  if (token[1][2] == Marker.EXCLAMATION && (options.level[OptimizationLevel.One].specialComments == 'all' || options.commentsKept < options.level[OptimizationLevel.One].specialComments)) {
+    options.commentsKept++;
+    return;
+  }
+
+  token[1] = [];
+}
+
+function cleanupCharsets(tokens) {
+  var hasCharset = false;
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    if (token[0] != Token.AT_RULE) { continue; }
+
+    if (!CHARSET_REGEXP.test(token[1])) { continue; }
+
+    if (hasCharset || token[1].indexOf(CHARSET_TOKEN) == -1) {
+      tokens.splice(i, 1);
+      i--;
+      l--;
+    } else {
+      hasCharset = true;
+      tokens.splice(i, 1);
+      tokens.unshift([Token.AT_RULE, token[1].replace(CHARSET_REGEXP, CHARSET_TOKEN)]);
+    }
+  }
+}
+
+function buildUnitRegexp(options) {
+  var units = ['px', 'em', 'ex', 'cm', 'mm', 'in', 'pt', 'pc', '%'];
+  var otherUnits = ['ch', 'rem', 'vh', 'vm', 'vmax', 'vmin', 'vw'];
+
+  otherUnits.forEach(function(unit) {
+    if (options.compatibility.units[unit]) {
+      units.push(unit);
+    }
+  });
+
+  return new RegExp('(^|\\s|\\(|,)0(?:' + units.join('|') + ')(\\W|$)', 'g');
+}
+
+function buildPrecisionOptions(roundingPrecision) {
+  var precisionOptions = {
+    matcher: null,
+    units: {}
+  };
+  var optimizable = [];
+  var unit;
+  var value;
+
+  for (unit in roundingPrecision) {
+    value = roundingPrecision[unit];
+
+    if (value != DEFAULT_ROUNDING_PRECISION) {
+      precisionOptions.units[unit] = {};
+      precisionOptions.units[unit].value = value;
+      precisionOptions.units[unit].multiplier = 10 ** value;
+
+      optimizable.push(unit);
+    }
+  }
+
+  if (optimizable.length > 0) {
+    precisionOptions.enabled = true;
+    precisionOptions.decimalPointMatcher = new RegExp('(\\d)\\.($|' + optimizable.join('|') + ')($|\\W)', 'g');
+    precisionOptions.zeroMatcher = new RegExp('(\\d*)(\\.\\d+)(' + optimizable.join('|') + ')', 'g');
+  }
+
+  return precisionOptions;
+}
+
+function buildVariableOptimizers(options) {
+  return options.level[OptimizationLevel.One].variableValueOptimizers.map(function(optimizer) {
+    if (typeof (optimizer) == 'string') {
+      return optimizers[optimizer] || noopValueOptimizer;
+    }
+
+    return optimizer;
+  });
+}
+
+function level1Optimize(tokens, context) {
+  var options = context.options;
+  var levelOptions = options.level[OptimizationLevel.One];
+  var ie7Hack = options.compatibility.selectors.ie7Hack;
+  var adjacentSpace = options.compatibility.selectors.adjacentSpace;
+  var spaceAfterClosingBrace = options.compatibility.properties.spaceAfterClosingBrace;
+  var format = options.format;
+  var mayHaveCharset = false;
+  var afterRules = false;
+
+  options.unitsRegexp = options.unitsRegexp || buildUnitRegexp(options);
+  options.precision = options.precision || buildPrecisionOptions(levelOptions.roundingPrecision);
+  options.commentsKept = options.commentsKept || 0;
+  options.variableOptimizers = options.variableOptimizers || buildVariableOptimizers(options);
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    switch (token[0]) {
+    case Token.AT_RULE:
+      token[1] = isImport(token) && afterRules ? '' : token[1];
+      token[1] = levelOptions.tidyAtRules ? tidyAtRule(token[1]) : token[1];
+      mayHaveCharset = true;
+      break;
+    case Token.AT_RULE_BLOCK:
+      optimizeBody(token[1], token[2], context);
+      afterRules = true;
+      break;
+    case Token.NESTED_BLOCK:
+      token[1] = levelOptions.tidyBlockScopes ? tidyBlock(token[1], spaceAfterClosingBrace) : token[1];
+      level1Optimize(token[2], context);
+      afterRules = true;
+      break;
+    case Token.COMMENT:
+      optimizeComment(token, options);
+      break;
+    case Token.RULE:
+      token[1] = levelOptions.tidySelectors
+        ? tidyRules(token[1], !ie7Hack, adjacentSpace, format, context.warnings)
+        : token[1];
+      token[1] = token[1].length > 1 ? sortSelectors(token[1], levelOptions.selectorsSortingMethod) : token[1];
+      optimizeBody(token[1], token[2], context);
+      afterRules = true;
+      break;
+    }
+
+    if (token[0] == Token.COMMENT
+      && token[1].length === 0
+      || levelOptions.removeEmpty
+      && (token[1].length === 0 || (token[2] && token[2].length === 0))) {
+      tokens.splice(i, 1);
+      i--;
+      l--;
+    }
+  }
+
+  if (levelOptions.cleanupCharsets && mayHaveCharset) {
+    cleanupCharsets(tokens);
+  }
+
+  return tokens;
+}
+
+module.exports = level1Optimize;

node_modules/clean-css/lib/optimizer/level-1/property-optimizers.js

@@ -0,0 +1,10 @@
+module.exports = {
+  background: require('./property-optimizers/background').level1.property,
+  boxShadow: require('./property-optimizers/box-shadow').level1.property,
+  borderRadius: require('./property-optimizers/border-radius').level1.property,
+  filter: require('./property-optimizers/filter').level1.property,
+  fontWeight: require('./property-optimizers/font-weight').level1.property,
+  margin: require('./property-optimizers/margin').level1.property,
+  outline: require('./property-optimizers/outline').level1.property,
+  padding: require('./property-optimizers/padding').level1.property
+};

node_modules/clean-css/lib/optimizer/level-1/property-optimizers/background.js

@@ -0,0 +1,23 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var plugin = {
+  level1: {
+    property: function background(_rule, property, options) {
+      var values = property.value;
+
+      if (!options.level[OptimizationLevel.One].optimizeBackground) {
+        return;
+      }
+
+      if (values.length == 1 && values[0][1] == 'none') {
+        values[0][1] = '0 0';
+      }
+
+      if (values.length == 1 && values[0][1] == 'transparent') {
+        values[0][1] = '0 0';
+      }
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/property-optimizers/border-radius.js

@@ -0,0 +1,29 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var plugin = {
+  level1: {
+    property: function borderRadius(_rule, property, options) {
+      var values = property.value;
+
+      if (!options.level[OptimizationLevel.One].optimizeBorderRadius) {
+        return;
+      }
+
+      if (values.length == 3 && values[1][1] == '/' && values[0][1] == values[2][1]) {
+        property.value.splice(1);
+        property.dirty = true;
+      } else if (values.length == 5 && values[2][1] == '/' && values[0][1] == values[3][1] && values[1][1] == values[4][1]) {
+        property.value.splice(2);
+        property.dirty = true;
+      } else if (values.length == 7 && values[3][1] == '/' && values[0][1] == values[4][1] && values[1][1] == values[5][1] && values[2][1] == values[6][1]) {
+        property.value.splice(3);
+        property.dirty = true;
+      } else if (values.length == 9 && values[4][1] == '/' && values[0][1] == values[5][1] && values[1][1] == values[6][1] && values[2][1] == values[7][1] && values[3][1] == values[8][1]) {
+        property.value.splice(4);
+        property.dirty = true;
+      }
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/property-optimizers/box-shadow.js

@@ -0,0 +1,15 @@
+var plugin = {
+  level1: {
+    property: function boxShadow(_rule, property) {
+      var values = property.value;
+
+      // remove multiple zeros
+      if (values.length == 4 && values[0][1] === '0' && values[1][1] === '0' && values[2][1] === '0' && values[3][1] === '0') {
+        property.value.splice(2);
+        property.dirty = true;
+      }
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/property-optimizers/filter.js

@@ -0,0 +1,34 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var ALPHA_OR_CHROMA_FILTER_PATTERN = /progid:DXImageTransform\.Microsoft\.(Alpha|Chroma)(\W)/;
+var NO_SPACE_AFTER_COMMA_PATTERN = /,(\S)/g;
+var WHITESPACE_AROUND_EQUALS_PATTERN = / ?= ?/g;
+
+var plugin = {
+  level1: {
+    property: function filter(_rule, property, options) {
+      if (!options.compatibility.properties.ieFilters) {
+        return;
+      }
+
+      if (!options.level[OptimizationLevel.One].optimizeFilter) {
+        return;
+      }
+
+      if (property.value.length == 1) {
+        property.value[0][1] = property.value[0][1].replace(
+          ALPHA_OR_CHROMA_FILTER_PATTERN,
+          function(match, filter, suffix) {
+            return filter.toLowerCase() + suffix;
+          }
+        );
+      }
+
+      property.value[0][1] = property.value[0][1]
+        .replace(NO_SPACE_AFTER_COMMA_PATTERN, ', $1')
+        .replace(WHITESPACE_AROUND_EQUALS_PATTERN, '=');
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/property-optimizers/font-weight.js

@@ -0,0 +1,23 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var plugin = {
+  level1: {
+    property: function fontWeight(_rule, property, options) {
+      var value = property.value[0][1];
+
+      if (!options.level[OptimizationLevel.One].optimizeFontWeight) {
+        return;
+      }
+
+      if (value == 'normal') {
+        value = '400';
+      } else if (value == 'bold') {
+        value = '700';
+      }
+
+      property.value[0][1] = value;
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/property-optimizers/margin.js

@@ -0,0 +1,21 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var plugin = {
+  level1: {
+    property: function margin(_rule, property, options) {
+      var values = property.value;
+
+      if (!options.level[OptimizationLevel.One].replaceMultipleZeros) {
+        return;
+      }
+
+      // remove multiple zeros
+      if (values.length == 4 && values[0][1] === '0' && values[1][1] === '0' && values[2][1] === '0' && values[3][1] === '0') {
+        property.value.splice(1);
+        property.dirty = true;
+      }
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/property-optimizers/outline.js

@@ -0,0 +1,19 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var plugin = {
+  level1: {
+    property: function outline(_rule, property, options) {
+      var values = property.value;
+
+      if (!options.level[OptimizationLevel.One].optimizeOutline) {
+        return;
+      }
+
+      if (values.length == 1 && values[0][1] == 'none') {
+        values[0][1] = '0';
+      }
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/property-optimizers/padding.js

@@ -0,0 +1,32 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+function isNegative(value) {
+  return value && value[1][0] == '-' && parseFloat(value[1]) < 0;
+}
+
+var plugin = {
+  level1: {
+    property: function padding(_rule, property, options) {
+      var values = property.value;
+
+      // remove multiple zeros
+      if (values.length == 4 && values[0][1] === '0' && values[1][1] === '0' && values[2][1] === '0' && values[3][1] === '0') {
+        property.value.splice(1);
+        property.dirty = true;
+      }
+
+      // remove negative paddings
+      if (options.level[OptimizationLevel.One].removeNegativePaddings
+        && (
+          isNegative(property.value[0])
+          || isNegative(property.value[1])
+          || isNegative(property.value[2])
+          || isNegative(property.value[3])
+        )) {
+        property.unused = true;
+      }
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/sort-selectors.js

@@ -0,0 +1,23 @@
+var naturalCompare = require('../../utils/natural-compare');
+
+function naturalSorter(scope1, scope2) {
+  return naturalCompare(scope1[1], scope2[1]);
+}
+
+function standardSorter(scope1, scope2) {
+  return scope1[1] > scope2[1] ? 1 : -1;
+}
+
+function sortSelectors(selectors, method) {
+  switch (method) {
+  case 'natural':
+    return selectors.sort(naturalSorter);
+  case 'standard':
+    return selectors.sort(standardSorter);
+  case 'none':
+  case false:
+    return selectors;
+  }
+}
+
+module.exports = sortSelectors;

node_modules/clean-css/lib/optimizer/level-1/tidy-at-rule.js

@@ -0,0 +1,9 @@
+function tidyAtRule(value) {
+  return value
+    .replace(/\s+/g, ' ')
+    .replace(/url\(\s+/g, 'url(')
+    .replace(/\s+\)/g, ')')
+    .trim();
+}
+
+module.exports = tidyAtRule;

node_modules/clean-css/lib/optimizer/level-1/tidy-block.js

@@ -0,0 +1,34 @@
+var SUPPORTED_COMPACT_BLOCK_MATCHER = /^@media\W/;
+var SUPPORTED_QUOTE_REMOVAL_MATCHER = /^@(?:keyframes|-moz-keyframes|-o-keyframes|-webkit-keyframes)\W/;
+
+function tidyBlock(values, spaceAfterClosingBrace) {
+  var withoutSpaceAfterClosingBrace;
+  var withoutQuotes;
+  var i;
+
+  for (i = values.length - 1; i >= 0; i--) {
+    withoutSpaceAfterClosingBrace = !spaceAfterClosingBrace && SUPPORTED_COMPACT_BLOCK_MATCHER.test(values[i][1]);
+    withoutQuotes = SUPPORTED_QUOTE_REMOVAL_MATCHER.test(values[i][1]);
+
+    values[i][1] = values[i][1]
+      .replace(/\n|\r\n/g, ' ')
+      .replace(/\s+/g, ' ')
+      .replace(/(,|:|\() /g, '$1')
+      .replace(/ \)/g, ')');
+
+    if (withoutQuotes) {
+      values[i][1] = values[i][1]
+        .replace(/'([a-zA-Z][a-zA-Z\d\-_]+)'/, '$1')
+        .replace(/"([a-zA-Z][a-zA-Z\d\-_]+)"/, '$1');
+    }
+
+    if (withoutSpaceAfterClosingBrace) {
+      values[i][1] = values[i][1]
+        .replace(/\) /g, ')');
+    }
+  }
+
+  return values;
+}
+
+module.exports = tidyBlock;

node_modules/clean-css/lib/optimizer/level-1/tidy-rules.js

@@ -0,0 +1,265 @@
+var Spaces = require('../../options/format').Spaces;
+var Marker = require('../../tokenizer/marker');
+var formatPosition = require('../../utils/format-position');
+
+var CASE_ATTRIBUTE_PATTERN = /[\s"'][iI]\s*\]/;
+var CASE_RESTORE_PATTERN = /([\d\w])([iI])\]/g;
+var DOUBLE_QUOTE_CASE_PATTERN = /="([a-zA-Z][a-zA-Z\d\-_]+)"([iI])/g;
+var DOUBLE_QUOTE_PATTERN = /="([a-zA-Z][a-zA-Z\d\-_]+)"(\s|\])/g;
+var HTML_COMMENT_PATTERN = /^(?:(?:<!--|-->)\s*)+/;
+var SINGLE_QUOTE_CASE_PATTERN = /='([a-zA-Z][a-zA-Z\d\-_]+)'([iI])/g;
+var SINGLE_QUOTE_PATTERN = /='([a-zA-Z][a-zA-Z\d\-_]+)'(\s|\])/g;
+var RELATION_PATTERN = /[>+~]/;
+var WHITESPACE_PATTERN = /\s/;
+
+var ASTERISK_PLUS_HTML_HACK = '*+html ';
+var ASTERISK_FIRST_CHILD_PLUS_HTML_HACK = '*:first-child+html ';
+var LESS_THAN = '<';
+
+var PSEUDO_CLASSES_WITH_SELECTORS = [
+  ':current',
+  ':future',
+  ':has',
+  ':host',
+  ':host-context',
+  ':is',
+  ':not',
+  ':past',
+  ':where'
+];
+
+function hasInvalidCharacters(value) {
+  var isEscaped;
+  var isInvalid = false;
+  var character;
+  var isQuote = false;
+  var i, l;
+
+  for (i = 0, l = value.length; i < l; i++) {
+    character = value[i];
+
+    if (isEscaped) {
+      // continue as always
+    } else if (character == Marker.SINGLE_QUOTE || character == Marker.DOUBLE_QUOTE) {
+      isQuote = !isQuote;
+    } else if (!isQuote
+      && (character == Marker.CLOSE_CURLY_BRACKET
+        || character == Marker.EXCLAMATION
+        || character == LESS_THAN
+        || character == Marker.SEMICOLON)
+    ) {
+      isInvalid = true;
+      break;
+    } else if (!isQuote && i === 0 && RELATION_PATTERN.test(character)) {
+      isInvalid = true;
+      break;
+    }
+
+    isEscaped = character == Marker.BACK_SLASH;
+  }
+
+  return isInvalid;
+}
+
+function removeWhitespace(value, format) {
+  var stripped = [];
+  var character;
+  var isNewLineNix;
+  var isNewLineWin;
+  var isEscaped;
+  var wasEscaped;
+  var isQuoted;
+  var isSingleQuoted;
+  var isDoubleQuoted;
+  var isAttribute;
+  var isRelation;
+  var isWhitespace;
+  var isSpaceAwarePseudoClass;
+  var roundBracketLevel = 0;
+  var wasComma = false;
+  var wasRelation = false;
+  var wasWhitespace = false;
+  var withCaseAttribute = CASE_ATTRIBUTE_PATTERN.test(value);
+  var spaceAroundRelation = format && format.spaces[Spaces.AroundSelectorRelation];
+  var i, l;
+
+  for (i = 0, l = value.length; i < l; i++) {
+    character = value[i];
+
+    isNewLineNix = character == Marker.NEW_LINE_NIX;
+    isNewLineWin = character == Marker.NEW_LINE_NIX && value[i - 1] == Marker.CARRIAGE_RETURN;
+    isQuoted = isSingleQuoted || isDoubleQuoted;
+    isRelation = !isAttribute && !isEscaped && roundBracketLevel === 0 && RELATION_PATTERN.test(character);
+    isWhitespace = WHITESPACE_PATTERN.test(character);
+    isSpaceAwarePseudoClass = roundBracketLevel == 1 && character == Marker.CLOSE_ROUND_BRACKET
+      ? false
+      : isSpaceAwarePseudoClass
+        || (roundBracketLevel === 0 && character == Marker.COLON && isPseudoClassWithSelectors(value, i));
+
+    if (wasEscaped && isQuoted && isNewLineWin) {
+      // swallow escaped new windows lines in comments
+      stripped.pop();
+      stripped.pop();
+    } else if (isEscaped && isQuoted && isNewLineNix) {
+      // swallow escaped new *nix lines in comments
+      stripped.pop();
+    } else if (isEscaped) {
+      stripped.push(character);
+    } else if (character == Marker.OPEN_SQUARE_BRACKET && !isQuoted) {
+      stripped.push(character);
+      isAttribute = true;
+    } else if (character == Marker.CLOSE_SQUARE_BRACKET && !isQuoted) {
+      stripped.push(character);
+      isAttribute = false;
+    } else if (character == Marker.OPEN_ROUND_BRACKET && !isQuoted) {
+      stripped.push(character);
+      roundBracketLevel++;
+    } else if (character == Marker.CLOSE_ROUND_BRACKET && !isQuoted) {
+      stripped.push(character);
+      roundBracketLevel--;
+    } else if (character == Marker.SINGLE_QUOTE && !isQuoted) {
+      stripped.push(character);
+      isSingleQuoted = true;
+    } else if (character == Marker.DOUBLE_QUOTE && !isQuoted) {
+      stripped.push(character);
+      isDoubleQuoted = true;
+    } else if (character == Marker.SINGLE_QUOTE && isQuoted) {
+      stripped.push(character);
+      isSingleQuoted = false;
+    } else if (character == Marker.DOUBLE_QUOTE && isQuoted) {
+      stripped.push(character);
+      isDoubleQuoted = false;
+    } else if (isWhitespace && wasRelation && !spaceAroundRelation) {
+      continue;
+    } else if (!isWhitespace && wasRelation && spaceAroundRelation) {
+      stripped.push(Marker.SPACE);
+      stripped.push(character);
+    } else if (isWhitespace && !wasWhitespace && wasComma && roundBracketLevel > 0 && isSpaceAwarePseudoClass) {
+      // skip space
+    } else if (isWhitespace && !wasWhitespace && roundBracketLevel > 0 && isSpaceAwarePseudoClass) {
+      stripped.push(character);
+    } else if (isWhitespace && (isAttribute || roundBracketLevel > 0) && !isQuoted) {
+      // skip space
+    } else if (isWhitespace && wasWhitespace && !isQuoted) {
+      // skip extra space
+    } else if ((isNewLineWin || isNewLineNix) && (isAttribute || roundBracketLevel > 0) && isQuoted) {
+      // skip newline
+    } else if (isRelation && wasWhitespace && !spaceAroundRelation) {
+      stripped.pop();
+      stripped.push(character);
+    } else if (isRelation && !wasWhitespace && spaceAroundRelation) {
+      stripped.push(Marker.SPACE);
+      stripped.push(character);
+    } else if (isWhitespace) {
+      stripped.push(Marker.SPACE);
+    } else {
+      stripped.push(character);
+    }
+
+    wasEscaped = isEscaped;
+    isEscaped = character == Marker.BACK_SLASH;
+    wasRelation = isRelation;
+    wasWhitespace = isWhitespace;
+    wasComma = character == Marker.COMMA;
+  }
+
+  return withCaseAttribute
+    ? stripped.join('').replace(CASE_RESTORE_PATTERN, '$1 $2]')
+    : stripped.join('');
+}
+
+function isPseudoClassWithSelectors(value, colonPosition) {
+  var pseudoClass = value.substring(colonPosition, value.indexOf(Marker.OPEN_ROUND_BRACKET, colonPosition));
+
+  return PSEUDO_CLASSES_WITH_SELECTORS.indexOf(pseudoClass) > -1;
+}
+
+function removeQuotes(value) {
+  if (value.indexOf('\'') == -1 && value.indexOf('"') == -1) {
+    return value;
+  }
+
+  return value
+    .replace(SINGLE_QUOTE_CASE_PATTERN, '=$1 $2')
+    .replace(SINGLE_QUOTE_PATTERN, '=$1$2')
+    .replace(DOUBLE_QUOTE_CASE_PATTERN, '=$1 $2')
+    .replace(DOUBLE_QUOTE_PATTERN, '=$1$2');
+}
+
+function replacePseudoClasses(value) {
+  return value
+    .replace('nth-child(1)', 'first-child')
+    .replace('nth-of-type(1)', 'first-of-type')
+    .replace('nth-of-type(even)', 'nth-of-type(2n)')
+    .replace('nth-child(even)', 'nth-child(2n)')
+    .replace('nth-of-type(2n+1)', 'nth-of-type(odd)')
+    .replace('nth-child(2n+1)', 'nth-child(odd)')
+    .replace('nth-last-child(1)', 'last-child')
+    .replace('nth-last-of-type(1)', 'last-of-type')
+    .replace('nth-last-of-type(even)', 'nth-last-of-type(2n)')
+    .replace('nth-last-child(even)', 'nth-last-child(2n)')
+    .replace('nth-last-of-type(2n+1)', 'nth-last-of-type(odd)')
+    .replace('nth-last-child(2n+1)', 'nth-last-child(odd)');
+}
+
+function tidyRules(rules, removeUnsupported, adjacentSpace, format, warnings) {
+  var list = [];
+  var repeated = [];
+
+  function removeHTMLComment(rule, match) {
+    warnings.push('HTML comment \'' + match + '\' at ' + formatPosition(rule[2][0]) + '. Removing.');
+    return '';
+  }
+
+  for (var i = 0, l = rules.length; i < l; i++) {
+    var rule = rules[i];
+    var reduced = rule[1];
+
+    reduced = reduced.replace(HTML_COMMENT_PATTERN, removeHTMLComment.bind(null, rule));
+
+    if (hasInvalidCharacters(reduced)) {
+      warnings.push('Invalid selector \'' + rule[1] + '\' at ' + formatPosition(rule[2][0]) + '. Ignoring.');
+      continue;
+    }
+
+    reduced = removeWhitespace(reduced, format);
+    reduced = removeQuotes(reduced);
+
+    if (adjacentSpace && reduced.indexOf('nav') > 0) {
+      reduced = reduced.replace(/\+nav(\S|$)/, '+ nav$1');
+    }
+
+    if (removeUnsupported && reduced.indexOf(ASTERISK_PLUS_HTML_HACK) > -1) {
+      continue;
+    }
+
+    if (removeUnsupported && reduced.indexOf(ASTERISK_FIRST_CHILD_PLUS_HTML_HACK) > -1) {
+      continue;
+    }
+
+    if (reduced.indexOf('*') > -1) {
+      reduced = reduced
+        .replace(/\*([:#.[])/g, '$1')
+        .replace(/^(:first-child)?\+html/, '*$1+html');
+    }
+
+    if (repeated.indexOf(reduced) > -1) {
+      continue;
+    }
+
+    reduced = replacePseudoClasses(reduced);
+
+    rule[1] = reduced;
+    repeated.push(reduced);
+    list.push(rule);
+  }
+
+  if (list.length == 1 && list[0][1].length === 0) {
+    warnings.push('Empty selector \'' + list[0][1] + '\' at ' + formatPosition(list[0][2][0]) + '. Ignoring.');
+    list = [];
+  }
+
+  return list;
+}
+
+module.exports = tidyRules;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers.js

@@ -0,0 +1,14 @@
+module.exports = {
+  color: require('./value-optimizers/color').level1.value,
+  degrees: require('./value-optimizers/degrees').level1.value,
+  fraction: require('./value-optimizers/fraction').level1.value,
+  precision: require('./value-optimizers/precision').level1.value,
+  textQuotes: require('./value-optimizers/text-quotes').level1.value,
+  time: require('./value-optimizers/time').level1.value,
+  unit: require('./value-optimizers/unit').level1.value,
+  urlPrefix: require('./value-optimizers/url-prefix').level1.value,
+  urlQuotes: require('./value-optimizers/url-quotes').level1.value,
+  urlWhiteSpace: require('./value-optimizers/url-whitespace').level1.value,
+  whiteSpace: require('./value-optimizers/whitespace').level1.value,
+  zero: require('./value-optimizers/zero').level1.value
+};

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/color.js

@@ -0,0 +1,89 @@
+var shortenHex = require('./color/shorten-hex');
+var shortenHsl = require('./color/shorten-hsl');
+var shortenRgb = require('./color/shorten-rgb');
+
+var split = require('../../../utils/split');
+
+var ANY_COLOR_FUNCTION_PATTERN = /(rgb|rgba|hsl|hsla)\(([^()]+)\)/gi;
+var COLOR_PREFIX_PATTERN = /#|rgb|hsl/gi;
+var HEX_LONG_PATTERN = /(^|[^='"])#([0-9a-f]{6})/gi;
+var HEX_SHORT_PATTERN = /(^|[^='"])#([0-9a-f]{3})/gi;
+var HEX_VALUE_PATTERN = /[0-9a-f]/i;
+var HSL_PATTERN = /hsl\((-?\d+),(-?\d+)%?,(-?\d+)%?\)/gi;
+var RGBA_HSLA_PATTERN = /(rgb|hsl)a?\((-?\d+),(-?\d+%?),(-?\d+%?),(0*[1-9]+[0-9]*(\.?\d*)?)\)/gi;
+var RGB_PATTERN = /rgb\((-?\d+),(-?\d+),(-?\d+)\)/gi;
+var TRANSPARENT_FUNCTION_PATTERN = /(?:rgba|hsla)\(0,0%?,0%?,0\)/g;
+
+var plugin = {
+  level1: {
+    value: function color(name, value, options) {
+      if (!options.compatibility.properties.colors) {
+        return value;
+      }
+
+      if (!value.match(COLOR_PREFIX_PATTERN)) {
+        return shortenHex(value);
+      }
+
+      value = value
+        .replace(RGBA_HSLA_PATTERN, function(match, colorFn, p1, p2, p3, alpha) {
+          return (parseInt(alpha) >= 1 ? colorFn + '(' + [p1, p2, p3].join(',') + ')' : match);
+        })
+        .replace(RGB_PATTERN, function(match, red, green, blue) {
+          return shortenRgb(red, green, blue);
+        })
+        .replace(HSL_PATTERN, function(match, hue, saturation, lightness) {
+          return shortenHsl(hue, saturation, lightness);
+        })
+        .replace(HEX_LONG_PATTERN, function(match, prefix, color, at, inputValue) {
+          var suffix = inputValue[at + match.length];
+
+          if (suffix && HEX_VALUE_PATTERN.test(suffix)) {
+            return match;
+          } if (color[0] == color[1] && color[2] == color[3] && color[4] == color[5]) {
+            return (prefix + '#' + color[0] + color[2] + color[4]).toLowerCase();
+          }
+          return (prefix + '#' + color).toLowerCase();
+        })
+        .replace(HEX_SHORT_PATTERN, function(match, prefix, color) {
+          return prefix + '#' + color.toLowerCase();
+        })
+        .replace(ANY_COLOR_FUNCTION_PATTERN, function(match, colorFunction, colorDef) {
+          var tokens = colorDef.split(',');
+          var colorFnLowercase = colorFunction && colorFunction.toLowerCase();
+          var applies = (colorFnLowercase == 'hsl' && tokens.length == 3)
+            || (colorFnLowercase == 'hsla' && tokens.length == 4)
+            || (colorFnLowercase == 'rgb' && tokens.length === 3 && colorDef.indexOf('%') > 0)
+            || (colorFnLowercase == 'rgba' && tokens.length == 4 && colorDef.indexOf('%') > 0);
+
+          if (!applies) {
+            return match;
+          }
+
+          if (tokens[1].indexOf('%') == -1) {
+            tokens[1] += '%';
+          }
+
+          if (tokens[2].indexOf('%') == -1) {
+            tokens[2] += '%';
+          }
+
+          return colorFunction + '(' + tokens.join(',') + ')';
+        });
+
+      if (options.compatibility.colors.opacity && name.indexOf('background') == -1) {
+        value = value.replace(TRANSPARENT_FUNCTION_PATTERN, function(match) {
+          if (split(value, ',').pop().indexOf('gradient(') > -1) {
+            return match;
+          }
+
+          return 'transparent';
+        });
+      }
+
+      return shortenHex(value);
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/color/shorten-hex.js

@@ -0,0 +1,189 @@
+var COLORS = {
+  aliceblue: '#f0f8ff',
+  antiquewhite: '#faebd7',
+  aqua: '#0ff',
+  aquamarine: '#7fffd4',
+  azure: '#f0ffff',
+  beige: '#f5f5dc',
+  bisque: '#ffe4c4',
+  black: '#000',
+  blanchedalmond: '#ffebcd',
+  blue: '#00f',
+  blueviolet: '#8a2be2',
+  brown: '#a52a2a',
+  burlywood: '#deb887',
+  cadetblue: '#5f9ea0',
+  chartreuse: '#7fff00',
+  chocolate: '#d2691e',
+  coral: '#ff7f50',
+  cornflowerblue: '#6495ed',
+  cornsilk: '#fff8dc',
+  crimson: '#dc143c',
+  cyan: '#0ff',
+  darkblue: '#00008b',
+  darkcyan: '#008b8b',
+  darkgoldenrod: '#b8860b',
+  darkgray: '#a9a9a9',
+  darkgreen: '#006400',
+  darkgrey: '#a9a9a9',
+  darkkhaki: '#bdb76b',
+  darkmagenta: '#8b008b',
+  darkolivegreen: '#556b2f',
+  darkorange: '#ff8c00',
+  darkorchid: '#9932cc',
+  darkred: '#8b0000',
+  darksalmon: '#e9967a',
+  darkseagreen: '#8fbc8f',
+  darkslateblue: '#483d8b',
+  darkslategray: '#2f4f4f',
+  darkslategrey: '#2f4f4f',
+  darkturquoise: '#00ced1',
+  darkviolet: '#9400d3',
+  deeppink: '#ff1493',
+  deepskyblue: '#00bfff',
+  dimgray: '#696969',
+  dimgrey: '#696969',
+  dodgerblue: '#1e90ff',
+  firebrick: '#b22222',
+  floralwhite: '#fffaf0',
+  forestgreen: '#228b22',
+  fuchsia: '#f0f',
+  gainsboro: '#dcdcdc',
+  ghostwhite: '#f8f8ff',
+  gold: '#ffd700',
+  goldenrod: '#daa520',
+  gray: '#808080',
+  green: '#008000',
+  greenyellow: '#adff2f',
+  grey: '#808080',
+  honeydew: '#f0fff0',
+  hotpink: '#ff69b4',
+  indianred: '#cd5c5c',
+  indigo: '#4b0082',
+  ivory: '#fffff0',
+  khaki: '#f0e68c',
+  lavender: '#e6e6fa',
+  lavenderblush: '#fff0f5',
+  lawngreen: '#7cfc00',
+  lemonchiffon: '#fffacd',
+  lightblue: '#add8e6',
+  lightcoral: '#f08080',
+  lightcyan: '#e0ffff',
+  lightgoldenrodyellow: '#fafad2',
+  lightgray: '#d3d3d3',
+  lightgreen: '#90ee90',
+  lightgrey: '#d3d3d3',
+  lightpink: '#ffb6c1',
+  lightsalmon: '#ffa07a',
+  lightseagreen: '#20b2aa',
+  lightskyblue: '#87cefa',
+  lightslategray: '#778899',
+  lightslategrey: '#778899',
+  lightsteelblue: '#b0c4de',
+  lightyellow: '#ffffe0',
+  lime: '#0f0',
+  limegreen: '#32cd32',
+  linen: '#faf0e6',
+  magenta: '#ff00ff',
+  maroon: '#800000',
+  mediumaquamarine: '#66cdaa',
+  mediumblue: '#0000cd',
+  mediumorchid: '#ba55d3',
+  mediumpurple: '#9370db',
+  mediumseagreen: '#3cb371',
+  mediumslateblue: '#7b68ee',
+  mediumspringgreen: '#00fa9a',
+  mediumturquoise: '#48d1cc',
+  mediumvioletred: '#c71585',
+  midnightblue: '#191970',
+  mintcream: '#f5fffa',
+  mistyrose: '#ffe4e1',
+  moccasin: '#ffe4b5',
+  navajowhite: '#ffdead',
+  navy: '#000080',
+  oldlace: '#fdf5e6',
+  olive: '#808000',
+  olivedrab: '#6b8e23',
+  orange: '#ffa500',
+  orangered: '#ff4500',
+  orchid: '#da70d6',
+  palegoldenrod: '#eee8aa',
+  palegreen: '#98fb98',
+  paleturquoise: '#afeeee',
+  palevioletred: '#db7093',
+  papayawhip: '#ffefd5',
+  peachpuff: '#ffdab9',
+  peru: '#cd853f',
+  pink: '#ffc0cb',
+  plum: '#dda0dd',
+  powderblue: '#b0e0e6',
+  purple: '#800080',
+  rebeccapurple: '#663399',
+  red: '#f00',
+  rosybrown: '#bc8f8f',
+  royalblue: '#4169e1',
+  saddlebrown: '#8b4513',
+  salmon: '#fa8072',
+  sandybrown: '#f4a460',
+  seagreen: '#2e8b57',
+  seashell: '#fff5ee',
+  sienna: '#a0522d',
+  silver: '#c0c0c0',
+  skyblue: '#87ceeb',
+  slateblue: '#6a5acd',
+  slategray: '#708090',
+  slategrey: '#708090',
+  snow: '#fffafa',
+  springgreen: '#00ff7f',
+  steelblue: '#4682b4',
+  tan: '#d2b48c',
+  teal: '#008080',
+  thistle: '#d8bfd8',
+  tomato: '#ff6347',
+  turquoise: '#40e0d0',
+  violet: '#ee82ee',
+  wheat: '#f5deb3',
+  white: '#fff',
+  whitesmoke: '#f5f5f5',
+  yellow: '#ff0',
+  yellowgreen: '#9acd32'
+};
+
+var toHex = {};
+var toName = {};
+
+for (var name in COLORS) {
+  var hex = COLORS[name];
+
+  if (name.length < hex.length) {
+    toName[hex] = name;
+  } else {
+    toHex[name] = hex;
+  }
+}
+
+var toHexPattern = new RegExp('(^| |,|\\))(' + Object.keys(toHex).join('|') + ')( |,|\\)|$)', 'ig');
+var toNamePattern = new RegExp('(' + Object.keys(toName).join('|') + ')([^a-f0-9]|$)', 'ig');
+
+function hexConverter(match, prefix, colorValue, suffix) {
+  return prefix + toHex[colorValue.toLowerCase()] + suffix;
+}
+
+function nameConverter(match, colorValue, suffix) {
+  return toName[colorValue.toLowerCase()] + suffix;
+}
+
+function shortenHex(value) {
+  var hasHex = value.indexOf('#') > -1;
+  var shortened = value.replace(toHexPattern, hexConverter);
+
+  if (shortened != value) {
+    shortened = shortened.replace(toHexPattern, hexConverter);
+  }
+
+  return hasHex
+    ? shortened.replace(toNamePattern, nameConverter)
+    : shortened;
+}
+
+module.exports = shortenHex;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/color/shorten-hsl.js

@@ -0,0 +1,54 @@
+// HSL to RGB converter. Both methods adapted from:
+// http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
+
+function hslToRgb(h, s, l) {
+  var r, g, b;
+
+  // normalize hue orientation b/w 0 and 360 degrees
+  h %= 360;
+  if (h < 0) { h += 360; }
+  h = ~~h / 360;
+
+  if (s < 0) { s = 0; } else if (s > 100) { s = 100; }
+  s = ~~s / 100;
+
+  if (l < 0) { l = 0; } else if (l > 100) { l = 100; }
+  l = ~~l / 100;
+
+  if (s === 0) {
+    r = g = b = l; // achromatic
+  } else {
+    var q = l < 0.5
+      ? l * (1 + s)
+      : l + s - l * s;
+    var p = 2 * l - q;
+    r = hueToRgb(p, q, h + 1 / 3);
+    g = hueToRgb(p, q, h);
+    b = hueToRgb(p, q, h - 1 / 3);
+  }
+
+  return [~~(r * 255), ~~(g * 255), ~~(b * 255)];
+}
+
+function hueToRgb(p, q, t) {
+  if (t < 0) { t += 1; }
+  if (t > 1) { t -= 1; }
+  if (t < 1 / 6) { return p + (q - p) * 6 * t; }
+  if (t < 1 / 2) { return q; }
+  if (t < 2 / 3) { return p + (q - p) * (2 / 3 - t) * 6; }
+  return p;
+}
+
+function shortenHsl(hue, saturation, lightness) {
+  var asRgb = hslToRgb(hue, saturation, lightness);
+  var redAsHex = asRgb[0].toString(16);
+  var greenAsHex = asRgb[1].toString(16);
+  var blueAsHex = asRgb[2].toString(16);
+
+  return '#'
+    + ((redAsHex.length == 1 ? '0' : '') + redAsHex)
+    + ((greenAsHex.length == 1 ? '0' : '') + greenAsHex)
+    + ((blueAsHex.length == 1 ? '0' : '') + blueAsHex);
+}
+
+module.exports = shortenHsl;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/color/shorten-rgb.js

@@ -0,0 +1,10 @@
+function shortenRgb(red, green, blue) {
+  var normalizedRed = Math.max(0, Math.min(parseInt(red), 255));
+  var normalizedGreen = Math.max(0, Math.min(parseInt(green), 255));
+  var normalizedBlue = Math.max(0, Math.min(parseInt(blue), 255));
+
+  // Credit: Asen  http://jsbin.com/UPUmaGOc/2/edit?js,console
+  return '#' + ('00000' + (normalizedRed << 16 | normalizedGreen << 8 | normalizedBlue).toString(16)).slice(-6);
+}
+
+module.exports = shortenRgb;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/degrees.js

@@ -0,0 +1,19 @@
+var ZERO_DEG_PATTERN = /\(0deg\)/g;
+
+var plugin = {
+  level1: {
+    value: function degrees(_name, value, options) {
+      if (!options.compatibility.properties.zeroUnits) {
+        return value;
+      }
+
+      if (value.indexOf('0deg') == -1) {
+        return value;
+      }
+
+      return value.replace(ZERO_DEG_PATTERN, '(0)');
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/fraction.js

@@ -0,0 +1,72 @@
+var split = require('../../../utils/split');
+var startsAsUrl = require('./starts-as-url');
+
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var EXPRESSION_PATTERN = /^expression\(.*\)$/;
+var ANY_FUNCTION_PATTERN = /^(-(?:moz|ms|o|webkit)-[a-z-]+|[a-z-]+)\((.+)\)$/;
+var TOKEN_SEPARATOR_PATTERN = /([\s,/])/;
+
+var DOT_ZERO_PATTERN = /(^|\D)\.0+(\D|$)/g;
+var FRACTION_PATTERN = /\.([1-9]*)0+(\D|$)/g;
+var LEADING_ZERO_FRACTION_PATTERN = /(^|\D)0\.(\d)/g;
+var MINUS_ZERO_FRACTION_PATTERN = /([^\w\d-]|^)-0([^.]|$)/g;
+var ZERO_PREFIXED_UNIT_PATTERN = /(^|\s)0+([1-9])/g;
+
+function optimizeRecursively(value) {
+  var functionTokens;
+  var tokens;
+
+  if (startsAsUrl(value)) {
+    return value;
+  }
+
+  if (EXPRESSION_PATTERN.test(value)) {
+    return value;
+  }
+
+  functionTokens = ANY_FUNCTION_PATTERN.exec(value);
+
+  if (!functionTokens) {
+    return optimizeFractions(value);
+  }
+
+  tokens = split(functionTokens[2], TOKEN_SEPARATOR_PATTERN)
+    .map(function(token) { return optimizeRecursively(token); });
+
+  return functionTokens[1] + '(' + tokens.join('') + ')';
+}
+
+function optimizeFractions(value) {
+  if (value.indexOf('0') == -1) {
+    return value;
+  }
+
+  if (value.indexOf('-') > -1) {
+    value = value
+      .replace(MINUS_ZERO_FRACTION_PATTERN, '$10$2')
+      .replace(MINUS_ZERO_FRACTION_PATTERN, '$10$2');
+  }
+
+  return value
+    .replace(ZERO_PREFIXED_UNIT_PATTERN, '$1$2')
+    .replace(DOT_ZERO_PATTERN, '$10$2')
+    .replace(FRACTION_PATTERN, function(match, nonZeroPart, suffix) {
+      return (nonZeroPart.length > 0 ? '.' : '') + nonZeroPart + suffix;
+    })
+    .replace(LEADING_ZERO_FRACTION_PATTERN, '$1.$2');
+}
+
+var plugin = {
+  level1: {
+    value: function fraction(name, value, options) {
+      if (!options.level[OptimizationLevel.One].replaceZeroUnits) {
+        return value;
+      }
+
+      return optimizeRecursively(value);
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/precision.js

@@ -0,0 +1,22 @@
+var plugin = {
+  level1: {
+    value: function precision(_name, value, options) {
+      if (!options.precision.enabled || value.indexOf('.') === -1) {
+        return value;
+      }
+
+      return value
+        .replace(options.precision.decimalPointMatcher, '$1$2$3')
+        .replace(options.precision.zeroMatcher, function(match, integerPart, fractionPart, unit) {
+          var multiplier = options.precision.units[unit].multiplier;
+          var parsedInteger = parseInt(integerPart);
+          var integer = Number.isNaN(parsedInteger) ? 0 : parsedInteger;
+          var fraction = parseFloat(fractionPart);
+
+          return Math.round((integer + fraction) * multiplier) / multiplier + unit;
+        });
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/starts-as-url.js

@@ -0,0 +1,7 @@
+var URL_PREFIX_PATTERN = /^url\(/i;
+
+function startsAsUrl(value) {
+  return URL_PREFIX_PATTERN.test(value);
+}
+
+module.exports = startsAsUrl;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/text-quotes.js

@@ -0,0 +1,31 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var LOCAL_PREFIX_PATTERN = /^local\(/i;
+var QUOTED_PATTERN = /^('.*'|".*")$/;
+var QUOTED_BUT_SAFE_PATTERN = /^['"][a-zA-Z][a-zA-Z\d\-_]+['"]$/;
+// eslint-disable-next-line max-len
+var GENERIC_FONT_FAMILY_PATTERN = /^['"](?:cursive|default|emoji|fangsong|fantasy|inherit|initial|math|monospace|revert|revert-layer|sans-serif|serif|system-ui|ui-monospace|ui-rounded|ui-sans-serif|ui-serif|unset)['"]$/;
+
+var plugin = {
+  level1: {
+    value: function textQuotes(name, value, options) {
+      if ((name == 'font-family' || name == 'font') && GENERIC_FONT_FAMILY_PATTERN.test(value)) {
+        return value;
+      }
+
+      if (!options.level[OptimizationLevel.One].removeQuotes) {
+        return value;
+      }
+
+      if (!QUOTED_PATTERN.test(value) && !LOCAL_PREFIX_PATTERN.test(value)) {
+        return value;
+      }
+
+      return QUOTED_BUT_SAFE_PATTERN.test(value)
+        ? value.substring(1, value.length - 1)
+        : value;
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/time.js

@@ -0,0 +1,31 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var TIME_VALUE = /^(-?[\d.]+)(m?s)$/;
+
+var plugin = {
+  level1: {
+    value: function time(name, value, options) {
+      if (!options.level[OptimizationLevel.One].replaceTimeUnits) {
+        return value;
+      }
+
+      if (!TIME_VALUE.test(value)) {
+        return value;
+      }
+
+      return value.replace(TIME_VALUE, function(match, val, unit) {
+        var newValue;
+
+        if (unit == 'ms') {
+          newValue = parseInt(val) / 1000 + 's';
+        } else if (unit == 's') {
+          newValue = parseFloat(val) * 1000 + 'ms';
+        }
+
+        return newValue.length < match.length ? newValue : match;
+      });
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/unit.js

@@ -0,0 +1,46 @@
+var WHOLE_PIXEL_VALUE = /(?:^|\s|\()(-?\d+)px/;
+
+var plugin = {
+  level1: {
+    value: function unit(_name, value, options) {
+      if (!WHOLE_PIXEL_VALUE.test(value)) {
+        return value;
+      }
+
+      return value.replace(WHOLE_PIXEL_VALUE, function(match, val) {
+        var newValue;
+        var intVal = parseInt(val);
+
+        if (intVal === 0) {
+          return match;
+        }
+
+        if (options.compatibility.properties.shorterLengthUnits
+          && options.compatibility.units.pt
+          && intVal * 3 % 4 === 0) {
+          newValue = intVal * 3 / 4 + 'pt';
+        }
+
+        if (options.compatibility.properties.shorterLengthUnits
+          && options.compatibility.units.pc
+          && intVal % 16 === 0) {
+          newValue = intVal / 16 + 'pc';
+        }
+
+        if (options.compatibility.properties.shorterLengthUnits
+          && options.compatibility.units.in
+          && intVal % 96 === 0) {
+          newValue = intVal / 96 + 'in';
+        }
+
+        if (newValue) {
+          newValue = match.substring(0, match.indexOf(val)) + newValue;
+        }
+
+        return newValue && newValue.length < match.length ? newValue : match;
+      });
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/url-prefix.js

@@ -0,0 +1,23 @@
+var startsAsUrl = require('./starts-as-url');
+
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var URL_PREFIX_PATTERN = /^url\(/i;
+
+var plugin = {
+  level1: {
+    value: function urlPrefix(_name, value, options) {
+      if (!options.level[OptimizationLevel.One].normalizeUrls) {
+        return value;
+      }
+
+      if (!startsAsUrl(value)) {
+        return value;
+      }
+
+      return value.replace(URL_PREFIX_PATTERN, 'url(');
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/url-quotes.js

@@ -0,0 +1,22 @@
+var QUOTED_URL_PATTERN = /^url\(['"].+['"]\)$/;
+var QUOTED_URL_WITH_WHITESPACE_PATTERN = /^url\(['"].*[*\s()'"].*['"]\)$/;
+var QUOTES_PATTERN = /["']/g;
+var URL_DATA_PATTERN = /^url\(['"]data:[^;]+;charset/;
+
+var plugin = {
+  level1: {
+    value: function urlQuotes(_name, value, options) {
+      if (options.compatibility.properties.urlQuotes) {
+        return value;
+      }
+
+      return QUOTED_URL_PATTERN.test(value)
+        && !QUOTED_URL_WITH_WHITESPACE_PATTERN.test(value)
+        && !URL_DATA_PATTERN.test(value)
+        ? value.replace(QUOTES_PATTERN, '')
+        : value;
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/url-whitespace.js

@@ -0,0 +1,22 @@
+var startsAsUrl = require('./starts-as-url');
+
+var WHITESPACE_PATTERN = /\\?\n|\\?\r\n/g;
+var WHITESPACE_PREFIX_PATTERN = /(\()\s+/g;
+var WHITESPACE_SUFFIX_PATTERN = /\s+(\))/g;
+
+var plugin = {
+  level1: {
+    value: function urlWhitespace(_name, value) {
+      if (!startsAsUrl(value)) {
+        return value;
+      }
+
+      return value
+        .replace(WHITESPACE_PATTERN, '')
+        .replace(WHITESPACE_PREFIX_PATTERN, '$1')
+        .replace(WHITESPACE_SUFFIX_PATTERN, '$1');
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/whitespace.js

@@ -0,0 +1,48 @@
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var Marker = require('../../../tokenizer/marker');
+
+var CALC_DIVISION_WHITESPACE_PATTERN = /\) ?\/ ?/g;
+var COMMA_AND_SPACE_PATTERN = /, /g;
+var LINE_BREAK_PATTERN = /\r?\n/g;
+var MULTI_WHITESPACE_PATTERN = /\s+/g;
+var FUNCTION_CLOSING_BRACE_WHITESPACE_PATTERN = /\s+(;?\))/g;
+var FUNCTION_OPENING_BRACE_WHITESPACE_PATTERN = /(\(;?)\s+/g;
+var VARIABLE_NAME_PATTERN = /^--\S+$/;
+var VARIABLE_VALUE_PATTERN = /^var\(\s*--\S+\s*\)$/;
+
+var plugin = {
+  level1: {
+    value: function whitespace(name, value, options) {
+      if (!options.level[OptimizationLevel.One].removeWhitespace) {
+        return value;
+      }
+
+      if (VARIABLE_NAME_PATTERN.test(name) && !VARIABLE_VALUE_PATTERN.test(value)) {
+        return value;
+      }
+
+      if ((value.indexOf(' ') == -1 && value.indexOf('\n') == -1) || value.indexOf('expression') === 0) {
+        return value;
+      }
+
+      if (value.indexOf(Marker.SINGLE_QUOTE) > -1 || value.indexOf(Marker.DOUBLE_QUOTE) > -1) {
+        return value;
+      }
+
+      value = value.replace(LINE_BREAK_PATTERN, '');
+      value = value.replace(MULTI_WHITESPACE_PATTERN, ' ');
+
+      if (value.indexOf('calc') > -1) {
+        value = value.replace(CALC_DIVISION_WHITESPACE_PATTERN, ')/ ');
+      }
+
+      return value
+        .replace(FUNCTION_OPENING_BRACE_WHITESPACE_PATTERN, '$1')
+        .replace(FUNCTION_CLOSING_BRACE_WHITESPACE_PATTERN, '$1')
+        .replace(COMMA_AND_SPACE_PATTERN, ',');
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/zero.js

@@ -0,0 +1,49 @@
+var split = require('../../../utils/split');
+
+var ANY_FUNCTION_PATTERN = /^(-(?:moz|ms|o|webkit)-[a-z-]+|[a-z-]+)\((.+)\)$/;
+var SKIP_FUNCTION_PATTERN = /^(?:-moz-calc|-webkit-calc|calc|rgb|hsl|rgba|hsla|min|max|clamp|expression)\(/;
+var TOKEN_SEPARATOR_PATTERN = /([\s,/])/;
+
+function removeRecursively(value, options) {
+  var functionTokens;
+  var tokens;
+
+  if (SKIP_FUNCTION_PATTERN.test(value)) {
+    return value;
+  }
+
+  functionTokens = ANY_FUNCTION_PATTERN.exec(value);
+
+  if (!functionTokens) {
+    return removeZeros(value, options);
+  }
+
+  tokens = split(functionTokens[2], TOKEN_SEPARATOR_PATTERN)
+    .map(function(token) { return removeRecursively(token, options); });
+
+  return functionTokens[1] + '(' + tokens.join('') + ')';
+}
+
+function removeZeros(value, options) {
+  return value
+    .replace(options.unitsRegexp, '$10$2')
+    .replace(options.unitsRegexp, '$10$2');
+}
+
+var plugin = {
+  level1: {
+    value: function zero(name, value, options) {
+      if (!options.compatibility.properties.zeroUnits) {
+        return value;
+      }
+
+      if (value.indexOf('%') > 0 && (name == 'height' || name == 'max-height' || name == 'width' || name == 'max-width')) {
+        return value;
+      }
+
+      return removeRecursively(value, options);
+    }
+  }
+};
+
+module.exports = plugin;

node_modules/clean-css/lib/optimizer/level-2/extract-properties.js

@@ -0,0 +1,61 @@
+// This extractor is used in level 2 optimizations
+// IMPORTANT: Mind Token class and this code is not related!
+// Properties will be tokenized in one step, see #429
+
+var Token = require('../../tokenizer/token');
+var serializeRules = require('../../writer/one-time').rules;
+var serializeValue = require('../../writer/one-time').value;
+
+function extractProperties(token) {
+  var properties = [];
+  var inSpecificSelector;
+  var property;
+  var name;
+  var value;
+  var i, l;
+
+  if (token[0] == Token.RULE) {
+    inSpecificSelector = !/[.+>~]/.test(serializeRules(token[1]));
+
+    for (i = 0, l = token[2].length; i < l; i++) {
+      property = token[2][i];
+
+      if (property[0] != Token.PROPERTY) { continue; }
+
+      name = property[1][1];
+      if (name.length === 0) { continue; }
+
+      value = serializeValue(property, i);
+
+      properties.push([
+        name,
+        value,
+        findNameRoot(name),
+        token[2][i],
+        name + ':' + value,
+        token[1],
+        inSpecificSelector
+      ]);
+    }
+  } else if (token[0] == Token.NESTED_BLOCK) {
+    for (i = 0, l = token[2].length; i < l; i++) {
+      properties = properties.concat(extractProperties(token[2][i]));
+    }
+  }
+
+  return properties;
+}
+
+function findNameRoot(name) {
+  if (name == 'list-style') { return name; }
+  if (name.indexOf('-radius') > 0) { return 'border-radius'; }
+  if (name == 'border-collapse' || name == 'border-spacing' || name == 'border-image') { return name; }
+  if (name.indexOf('border-') === 0 && /^border-\w+-\w+$/.test(name)) { return name.match(/border-\w+/)[0]; }
+  if (name.indexOf('border-') === 0 && /^border-\w+$/.test(name)) { return 'border'; }
+  if (name.indexOf('text-') === 0) { return name; }
+  if (name == '-chrome-') { return name; }
+
+  return name.replace(/^-\w+-/, '').match(/([a-zA-Z]+)/)[0].toLowerCase();
+}
+
+module.exports = extractProperties;

node_modules/clean-css/lib/optimizer/level-2/is-mergeable.js

@@ -0,0 +1,273 @@
+var Marker = require('../../tokenizer/marker');
+var split = require('../../utils/split');
+
+var DEEP_SELECTOR_PATTERN = /\/deep\//;
+var DOUBLE_COLON_PATTERN = /^::/;
+var VENDOR_PREFIXED_PATTERN = /:(-moz-|-ms-|-o-|-webkit-)/;
+
+var NOT_PSEUDO = ':not';
+var PSEUDO_CLASSES_WITH_ARGUMENTS = [
+  ':dir',
+  ':lang',
+  ':not',
+  ':nth-child',
+  ':nth-last-child',
+  ':nth-last-of-type',
+  ':nth-of-type'
+];
+var RELATION_PATTERN = /[>+~]/;
+var UNMIXABLE_PSEUDO_CLASSES = [
+  ':after',
+  ':before',
+  ':first-letter',
+  ':first-line',
+  ':lang'
+];
+var UNMIXABLE_PSEUDO_ELEMENTS = [
+  '::after',
+  '::before',
+  '::first-letter',
+  '::first-line'
+];
+
+var Level = {
+  DOUBLE_QUOTE: 'double-quote',
+  SINGLE_QUOTE: 'single-quote',
+  ROOT: 'root'
+};
+
+function isMergeable(selector, mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) {
+  var singleSelectors = split(selector, Marker.COMMA);
+  var singleSelector;
+  var i, l;
+
+  for (i = 0, l = singleSelectors.length; i < l; i++) {
+    singleSelector = singleSelectors[i];
+
+    if (singleSelector.length === 0
+        || isDeepSelector(singleSelector)
+        || isVendorPrefixed(singleSelector)
+        || (singleSelector.indexOf(Marker.COLON) > -1
+          && !areMergeable(
+            singleSelector,
+            extractPseudoFrom(singleSelector),
+            mergeablePseudoClasses,
+            mergeablePseudoElements,
+            multiplePseudoMerging
+          ))) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function isDeepSelector(selector) {
+  return DEEP_SELECTOR_PATTERN.test(selector);
+}
+
+function isVendorPrefixed(selector) {
+  return VENDOR_PREFIXED_PATTERN.test(selector);
+}
+
+function extractPseudoFrom(selector) {
+  var list = [];
+  var character;
+  var buffer = [];
+  var level = Level.ROOT;
+  var roundBracketLevel = 0;
+  var isQuoted;
+  var isEscaped;
+  var isPseudo = false;
+  var isRelation;
+  var wasColon = false;
+  var index;
+  var len;
+
+  for (index = 0, len = selector.length; index < len; index++) {
+    character = selector[index];
+
+    isRelation = !isEscaped && RELATION_PATTERN.test(character);
+    isQuoted = level == Level.DOUBLE_QUOTE || level == Level.SINGLE_QUOTE;
+
+    if (isEscaped) {
+      buffer.push(character);
+    } else if (character == Marker.DOUBLE_QUOTE && level == Level.ROOT) {
+      buffer.push(character);
+      level = Level.DOUBLE_QUOTE;
+    } else if (character == Marker.DOUBLE_QUOTE && level == Level.DOUBLE_QUOTE) {
+      buffer.push(character);
+      level = Level.ROOT;
+    } else if (character == Marker.SINGLE_QUOTE && level == Level.ROOT) {
+      buffer.push(character);
+      level = Level.SINGLE_QUOTE;
+    } else if (character == Marker.SINGLE_QUOTE && level == Level.SINGLE_QUOTE) {
+      buffer.push(character);
+      level = Level.ROOT;
+    } else if (isQuoted) {
+      buffer.push(character);
+    } else if (character == Marker.OPEN_ROUND_BRACKET) {
+      buffer.push(character);
+      roundBracketLevel++;
+    } else if (character == Marker.CLOSE_ROUND_BRACKET && roundBracketLevel == 1 && isPseudo) {
+      buffer.push(character);
+      list.push(buffer.join(''));
+      roundBracketLevel--;
+      buffer = [];
+      isPseudo = false;
+    } else if (character == Marker.CLOSE_ROUND_BRACKET) {
+      buffer.push(character);
+      roundBracketLevel--;
+    } else if (character == Marker.COLON && roundBracketLevel === 0 && isPseudo && !wasColon) {
+      list.push(buffer.join(''));
+      buffer = [];
+      buffer.push(character);
+    } else if (character == Marker.COLON && roundBracketLevel === 0 && !wasColon) {
+      buffer = [];
+      buffer.push(character);
+      isPseudo = true;
+    } else if (character == Marker.SPACE && roundBracketLevel === 0 && isPseudo) {
+      list.push(buffer.join(''));
+      buffer = [];
+      isPseudo = false;
+    } else if (isRelation && roundBracketLevel === 0 && isPseudo) {
+      list.push(buffer.join(''));
+      buffer = [];
+      isPseudo = false;
+    } else {
+      buffer.push(character);
+    }
+
+    isEscaped = character == Marker.BACK_SLASH;
+    wasColon = character == Marker.COLON;
+  }
+
+  if (buffer.length > 0 && isPseudo) {
+    list.push(buffer.join(''));
+  }
+
+  return list;
+}
+
+function areMergeable(selector, matches, mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) {
+  return areAllowed(matches, mergeablePseudoClasses, mergeablePseudoElements)
+    && needArguments(matches)
+    && (matches.length < 2 || !someIncorrectlyChained(selector, matches))
+    && (matches.length < 2 || multiplePseudoMerging && allMixable(matches));
+}
+
+function areAllowed(matches, mergeablePseudoClasses, mergeablePseudoElements) {
+  var match;
+  var name;
+  var i, l;
+
+  for (i = 0, l = matches.length; i < l; i++) {
+    match = matches[i];
+    name = match.indexOf(Marker.OPEN_ROUND_BRACKET) > -1
+      ? match.substring(0, match.indexOf(Marker.OPEN_ROUND_BRACKET))
+      : match;
+
+    if (mergeablePseudoClasses.indexOf(name) === -1 && mergeablePseudoElements.indexOf(name) === -1) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function needArguments(matches) {
+  var match;
+  var name;
+  var bracketOpensAt;
+  var hasArguments;
+  var i, l;
+
+  for (i = 0, l = matches.length; i < l; i++) {
+    match = matches[i];
+
+    bracketOpensAt = match.indexOf(Marker.OPEN_ROUND_BRACKET);
+    hasArguments = bracketOpensAt > -1;
+    name = hasArguments
+      ? match.substring(0, bracketOpensAt)
+      : match;
+
+    if (hasArguments && PSEUDO_CLASSES_WITH_ARGUMENTS.indexOf(name) == -1) {
+      return false;
+    }
+
+    if (!hasArguments && PSEUDO_CLASSES_WITH_ARGUMENTS.indexOf(name) > -1) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function someIncorrectlyChained(selector, matches) {
+  var positionInSelector = 0;
+  var match;
+  var matchAt;
+  var nextMatch;
+  var nextMatchAt;
+  var name;
+  var nextName;
+  var areChained;
+  var i, l;
+
+  for (i = 0, l = matches.length; i < l; i++) {
+    match = matches[i];
+    nextMatch = matches[i + 1];
+
+    if (!nextMatch) {
+      break;
+    }
+
+    matchAt = selector.indexOf(match, positionInSelector);
+    nextMatchAt = selector.indexOf(match, matchAt + 1);
+    positionInSelector = nextMatchAt;
+    areChained = matchAt + match.length == nextMatchAt;
+
+    if (areChained) {
+      name = match.indexOf(Marker.OPEN_ROUND_BRACKET) > -1
+        ? match.substring(0, match.indexOf(Marker.OPEN_ROUND_BRACKET))
+        : match;
+      nextName = nextMatch.indexOf(Marker.OPEN_ROUND_BRACKET) > -1
+        ? nextMatch.substring(0, nextMatch.indexOf(Marker.OPEN_ROUND_BRACKET))
+        : nextMatch;
+
+      if (name != NOT_PSEUDO || nextName != NOT_PSEUDO) {
+        return true;
+      }
+    }
+  }
+
+  return false;
+}
+
+function allMixable(matches) {
+  var unmixableMatches = 0;
+  var match;
+  var i, l;
+
+  for (i = 0, l = matches.length; i < l; i++) {
+    match = matches[i];
+
+    if (isPseudoElement(match)) {
+      unmixableMatches += UNMIXABLE_PSEUDO_ELEMENTS.indexOf(match) > -1 ? 1 : 0;
+    } else {
+      unmixableMatches += UNMIXABLE_PSEUDO_CLASSES.indexOf(match) > -1 ? 1 : 0;
+    }
+
+    if (unmixableMatches > 1) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function isPseudoElement(pseudo) {
+  return DOUBLE_COLON_PATTERN.test(pseudo);
+}
+
+module.exports = isMergeable;

node_modules/clean-css/lib/optimizer/level-2/merge-adjacent.js

@@ -0,0 +1,55 @@
+var isMergeable = require('./is-mergeable');
+
+var optimizeProperties = require('./properties/optimize');
+
+var sortSelectors = require('../level-1/sort-selectors');
+var tidyRules = require('../level-1/tidy-rules');
+
+var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;
+
+var serializeBody = require('../../writer/one-time').body;
+var serializeRules = require('../../writer/one-time').rules;
+
+var Token = require('../../tokenizer/token');
+
+function mergeAdjacent(tokens, context) {
+  var lastToken = [null, [], []];
+  var options = context.options;
+  var adjacentSpace = options.compatibility.selectors.adjacentSpace;
+  var selectorsSortingMethod = options.level[OptimizationLevel.One].selectorsSortingMethod;
+  var mergeablePseudoClasses = options.compatibility.selectors.mergeablePseudoClasses;
+  var mergeablePseudoElements = options.compatibility.selectors.mergeablePseudoElements;
+  var mergeLimit = options.compatibility.selectors.mergeLimit;
+  var multiplePseudoMerging = options.compatibility.selectors.multiplePseudoMerging;
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    if (token[0] != Token.RULE) {
+      lastToken = [null, [], []];
+      continue;
+    }
+
+    if (lastToken[0] == Token.RULE && serializeRules(token[1]) == serializeRules(lastToken[1])) {
+      Array.prototype.push.apply(lastToken[2], token[2]);
+      optimizeProperties(lastToken[2], true, true, context);
+      token[2] = [];
+    } else if (lastToken[0] == Token.RULE && serializeBody(token[2]) == serializeBody(lastToken[2])
+        && isMergeable(serializeRules(token[1]), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging)
+        && isMergeable(
+          serializeRules(lastToken[1]),
+          mergeablePseudoClasses,
+          mergeablePseudoElements,
+          multiplePseudoMerging
+        )
+        && lastToken[1].length < mergeLimit) {
+      lastToken[1] = tidyRules(lastToken[1].concat(token[1]), false, adjacentSpace, false, context.warnings);
+      lastToken[1] = lastToken.length > 1 ? sortSelectors(lastToken[1], selectorsSortingMethod) : lastToken[1];
+      token[2] = [];
+    } else {
+      lastToken = token;
+    }
+  }
+}
+
+module.exports = mergeAdjacent;

node_modules/clean-css/lib/optimizer/level-2/merge-media-queries.js

@@ -0,0 +1,105 @@
+var canReorder = require('./reorderable').canReorder;
+var canReorderSingle = require('./reorderable').canReorderSingle;
+var extractProperties = require('./extract-properties');
+var rulesOverlap = require('./rules-overlap');
+
+var serializeRules = require('../../writer/one-time').rules;
+var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;
+var Token = require('../../tokenizer/token');
+
+function mergeMediaQueries(tokens, context) {
+  var mergeSemantically = context.options.level[OptimizationLevel.Two].mergeSemantically;
+  var specificityCache = context.cache.specificity;
+  var candidates = {};
+  var reduced = [];
+
+  for (var i = tokens.length - 1; i >= 0; i--) {
+    var token = tokens[i];
+    if (token[0] != Token.NESTED_BLOCK) {
+      continue;
+    }
+
+    var key = serializeRules(token[1]);
+    var candidate = candidates[key];
+    if (!candidate) {
+      candidate = [];
+      candidates[key] = candidate;
+    }
+
+    candidate.push(i);
+  }
+
+  for (var name in candidates) {
+    var positions = candidates[name];
+
+    positionLoop:
+    for (var j = positions.length - 1; j > 0; j--) {
+      var positionOne = positions[j];
+      var tokenOne = tokens[positionOne];
+      var positionTwo = positions[j - 1];
+      var tokenTwo = tokens[positionTwo];
+
+      directionLoop:
+      for (var direction = 1; direction >= -1; direction -= 2) {
+        var topToBottom = direction == 1;
+        var from = topToBottom ? positionOne + 1 : positionTwo - 1;
+        var to = topToBottom ? positionTwo : positionOne;
+        var delta = topToBottom ? 1 : -1;
+        var source = topToBottom ? tokenOne : tokenTwo;
+        var target = topToBottom ? tokenTwo : tokenOne;
+        var movedProperties = extractProperties(source);
+
+        while (from != to) {
+          var traversedProperties = extractProperties(tokens[from]);
+          from += delta;
+
+          if (mergeSemantically
+            && allSameRulePropertiesCanBeReordered(movedProperties, traversedProperties, specificityCache)
+          ) {
+            continue;
+          }
+
+          if (!canReorder(movedProperties, traversedProperties, specificityCache)) { continue directionLoop; }
+        }
+
+        target[2] = topToBottom
+          ? source[2].concat(target[2])
+          : target[2].concat(source[2]);
+        source[2] = [];
+
+        reduced.push(target);
+        continue positionLoop;
+      }
+    }
+  }
+
+  return reduced;
+}
+
+function allSameRulePropertiesCanBeReordered(movedProperties, traversedProperties, specificityCache) {
+  var movedProperty;
+  var movedRule;
+  var traversedProperty;
+  var traversedRule;
+  var i, l;
+  var j, m;
+
+  for (i = 0, l = movedProperties.length; i < l; i++) {
+    movedProperty = movedProperties[i];
+    movedRule = movedProperty[5];
+
+    for (j = 0, m = traversedProperties.length; j < m; j++) {
+      traversedProperty = traversedProperties[j];
+      traversedRule = traversedProperty[5];
+
+      if (rulesOverlap(movedRule, traversedRule, true)
+        && !canReorderSingle(movedProperty, traversedProperty, specificityCache)) {
+        return false;
+      }
+    }
+  }
+
+  return true;
+}
+
+module.exports = mergeMediaQueries;

node_modules/clean-css/lib/optimizer/level-2/merge-non-adjacent-by-body.js

@@ -0,0 +1,88 @@
+var isMergeable = require('./is-mergeable');
+
+var sortSelectors = require('../level-1/sort-selectors');
+var tidyRules = require('../level-1/tidy-rules');
+
+var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;
+
+var serializeBody = require('../../writer/one-time').body;
+var serializeRules = require('../../writer/one-time').rules;
+
+var Token = require('../../tokenizer/token');
+
+function unsafeSelector(value) {
+  return /\.|\*| :/.test(value);
+}
+
+function isBemElement(token) {
+  var asString = serializeRules(token[1]);
+  return asString.indexOf('__') > -1 || asString.indexOf('--') > -1;
+}
+
+function withoutModifier(selector) {
+  return selector.replace(/--[^ ,>+~:]+/g, '');
+}
+
+function removeAnyUnsafeElements(left, candidates) {
+  var leftSelector = withoutModifier(serializeRules(left[1]));
+
+  for (var body in candidates) {
+    var right = candidates[body];
+    var rightSelector = withoutModifier(serializeRules(right[1]));
+
+    if (rightSelector.indexOf(leftSelector) > -1 || leftSelector.indexOf(rightSelector) > -1) {
+      delete candidates[body];
+    }
+  }
+}
+
+function mergeNonAdjacentByBody(tokens, context) {
+  var options = context.options;
+  var mergeSemantically = options.level[OptimizationLevel.Two].mergeSemantically;
+  var adjacentSpace = options.compatibility.selectors.adjacentSpace;
+  var selectorsSortingMethod = options.level[OptimizationLevel.One].selectorsSortingMethod;
+  var mergeablePseudoClasses = options.compatibility.selectors.mergeablePseudoClasses;
+  var mergeablePseudoElements = options.compatibility.selectors.mergeablePseudoElements;
+  var multiplePseudoMerging = options.compatibility.selectors.multiplePseudoMerging;
+  var candidates = {};
+
+  for (var i = tokens.length - 1; i >= 0; i--) {
+    var token = tokens[i];
+    if (token[0] != Token.RULE) { continue; }
+
+    if (token[2].length > 0 && (!mergeSemantically && unsafeSelector(serializeRules(token[1])))) { candidates = {}; }
+
+    if (token[2].length > 0 && mergeSemantically && isBemElement(token)) { removeAnyUnsafeElements(token, candidates); }
+
+    var candidateBody = serializeBody(token[2]);
+    var oldToken = candidates[candidateBody];
+    if (oldToken
+        && isMergeable(
+          serializeRules(token[1]),
+          mergeablePseudoClasses,
+          mergeablePseudoElements,
+          multiplePseudoMerging
+        )
+        && isMergeable(
+          serializeRules(oldToken[1]),
+          mergeablePseudoClasses,
+          mergeablePseudoElements,
+          multiplePseudoMerging
+        )
+    ) {
+      if (token[2].length > 0) {
+        token[1] = tidyRules(oldToken[1].concat(token[1]), false, adjacentSpace, false, context.warnings);
+        token[1] = token[1].length > 1 ? sortSelectors(token[1], selectorsSortingMethod) : token[1];
+      } else {
+        token[1] = oldToken[1].concat(token[1]);
+      }
+
+      oldToken[2] = [];
+      candidates[candidateBody] = null;
+    }
+
+    candidates[serializeBody(token[2])] = token;
+  }
+}
+
+module.exports = mergeNonAdjacentByBody;

node_modules/clean-css/lib/optimizer/level-2/merge-non-adjacent-by-selector.js

@@ -0,0 +1,73 @@
+var canReorder = require('./reorderable').canReorder;
+var extractProperties = require('./extract-properties');
+
+var optimizeProperties = require('./properties/optimize');
+
+var serializeRules = require('../../writer/one-time').rules;
+
+var Token = require('../../tokenizer/token');
+
+function mergeNonAdjacentBySelector(tokens, context) {
+  var specificityCache = context.cache.specificity;
+  var allSelectors = {};
+  var repeatedSelectors = [];
+  var i;
+
+  for (i = tokens.length - 1; i >= 0; i--) {
+    if (tokens[i][0] != Token.RULE) { continue; }
+    if (tokens[i][2].length === 0) { continue; }
+
+    var selector = serializeRules(tokens[i][1]);
+    allSelectors[selector] = [i].concat(allSelectors[selector] || []);
+
+    if (allSelectors[selector].length == 2) { repeatedSelectors.push(selector); }
+  }
+
+  for (i = repeatedSelectors.length - 1; i >= 0; i--) {
+    var positions = allSelectors[repeatedSelectors[i]];
+
+    selectorIterator:
+    for (var j = positions.length - 1; j > 0; j--) {
+      var positionOne = positions[j - 1];
+      var tokenOne = tokens[positionOne];
+      var positionTwo = positions[j];
+      var tokenTwo = tokens[positionTwo];
+
+      directionIterator:
+      for (var direction = 1; direction >= -1; direction -= 2) {
+        var topToBottom = direction == 1;
+        var from = topToBottom ? positionOne + 1 : positionTwo - 1;
+        var to = topToBottom ? positionTwo : positionOne;
+        var delta = topToBottom ? 1 : -1;
+        var moved = topToBottom ? tokenOne : tokenTwo;
+        var target = topToBottom ? tokenTwo : tokenOne;
+        var movedProperties = extractProperties(moved);
+
+        while (from != to) {
+          var traversedProperties = extractProperties(tokens[from]);
+          from += delta;
+
+          // traversed then moved as we move selectors towards the start
+          var reorderable = topToBottom
+            ? canReorder(movedProperties, traversedProperties, specificityCache)
+            : canReorder(traversedProperties, movedProperties, specificityCache);
+
+          if (!reorderable && !topToBottom) { continue selectorIterator; }
+          if (!reorderable && topToBottom) { continue directionIterator; }
+        }
+
+        if (topToBottom) {
+          Array.prototype.push.apply(moved[2], target[2]);
+          target[2] = moved[2];
+        } else {
+          Array.prototype.push.apply(target[2], moved[2]);
+        }
+
+        optimizeProperties(target[2], true, true, context);
+        moved[2] = [];
+      }
+    }
+  }
+}
+
+module.exports = mergeNonAdjacentBySelector;

node_modules/clean-css/lib/optimizer/level-2/optimize.js

@@ -0,0 +1,139 @@
+var mergeAdjacent = require('./merge-adjacent');
+var mergeMediaQueries = require('./merge-media-queries');
+var mergeNonAdjacentByBody = require('./merge-non-adjacent-by-body');
+var mergeNonAdjacentBySelector = require('./merge-non-adjacent-by-selector');
+var reduceNonAdjacent = require('./reduce-non-adjacent');
+var removeDuplicateFontAtRules = require('./remove-duplicate-font-at-rules');
+var removeDuplicateMediaQueries = require('./remove-duplicate-media-queries');
+var removeDuplicates = require('./remove-duplicates');
+var removeUnusedAtRules = require('./remove-unused-at-rules');
+var restructure = require('./restructure');
+
+var optimizeProperties = require('./properties/optimize');
+
+var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel;
+
+var Token = require('../../tokenizer/token');
+
+function removeEmpty(tokens) {
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+    var isEmpty = false;
+
+    switch (token[0]) {
+    case Token.RULE:
+      isEmpty = token[1].length === 0 || token[2].length === 0;
+      break;
+    case Token.NESTED_BLOCK:
+      removeEmpty(token[2]);
+      isEmpty = token[2].length === 0;
+      break;
+    case Token.AT_RULE:
+      isEmpty = token[1].length === 0;
+      break;
+    case Token.AT_RULE_BLOCK:
+      isEmpty = token[2].length === 0;
+    }
+
+    if (isEmpty) {
+      tokens.splice(i, 1);
+      i--;
+      l--;
+    }
+  }
+}
+
+function recursivelyOptimizeBlocks(tokens, context) {
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    if (token[0] == Token.NESTED_BLOCK) {
+      var isKeyframes = /@(-moz-|-o-|-webkit-)?keyframes/.test(token[1][0][1]);
+      level2Optimize(token[2], context, !isKeyframes);
+    }
+  }
+}
+
+function recursivelyOptimizeProperties(tokens, context) {
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    switch (token[0]) {
+    case Token.RULE:
+      optimizeProperties(token[2], true, true, context);
+      break;
+    case Token.NESTED_BLOCK:
+      recursivelyOptimizeProperties(token[2], context);
+    }
+  }
+}
+
+function level2Optimize(tokens, context, withRestructuring) {
+  var levelOptions = context.options.level[OptimizationLevel.Two];
+  var level2Plugins = context.options.plugins.level2Block;
+  var reduced;
+  var i;
+
+  recursivelyOptimizeBlocks(tokens, context);
+  recursivelyOptimizeProperties(tokens, context);
+
+  if (levelOptions.removeDuplicateRules) {
+    removeDuplicates(tokens, context);
+  }
+
+  if (levelOptions.mergeAdjacentRules) {
+    mergeAdjacent(tokens, context);
+  }
+
+  if (levelOptions.reduceNonAdjacentRules) {
+    reduceNonAdjacent(tokens, context);
+  }
+
+  if (levelOptions.mergeNonAdjacentRules && levelOptions.mergeNonAdjacentRules != 'body') {
+    mergeNonAdjacentBySelector(tokens, context);
+  }
+
+  if (levelOptions.mergeNonAdjacentRules && levelOptions.mergeNonAdjacentRules != 'selector') {
+    mergeNonAdjacentByBody(tokens, context);
+  }
+
+  if (levelOptions.restructureRules && levelOptions.mergeAdjacentRules && withRestructuring) {
+    restructure(tokens, context);
+    mergeAdjacent(tokens, context);
+  }
+
+  if (levelOptions.restructureRules && !levelOptions.mergeAdjacentRules && withRestructuring) {
+    restructure(tokens, context);
+  }
+
+  if (levelOptions.removeDuplicateFontRules) {
+    removeDuplicateFontAtRules(tokens, context);
+  }
+
+  if (levelOptions.removeDuplicateMediaBlocks) {
+    removeDuplicateMediaQueries(tokens, context);
+  }
+
+  if (levelOptions.removeUnusedAtRules) {
+    removeUnusedAtRules(tokens, context);
+  }
+
+  if (levelOptions.mergeMedia) {
+    reduced = mergeMediaQueries(tokens, context);
+    for (i = reduced.length - 1; i >= 0; i--) {
+      level2Optimize(reduced[i][2], context, false);
+    }
+  }
+
+  for (i = 0; i < level2Plugins.length; i++) {
+    level2Plugins[i](tokens);
+  }
+
+  if (levelOptions.removeEmpty) {
+    removeEmpty(tokens);
+  }
+
+  return tokens;
+}
+
+module.exports = level2Optimize;

node_modules/clean-css/lib/optimizer/level-2/properties/every-values-pair.js

@@ -0,0 +1,28 @@
+var Marker = require('../../../tokenizer/marker');
+
+function everyValuesPair(fn, left, right) {
+  var leftSize = left.value.length;
+  var rightSize = right.value.length;
+  var total = Math.max(leftSize, rightSize);
+  var lowerBound = Math.min(leftSize, rightSize) - 1;
+  var leftValue;
+  var rightValue;
+  var position;
+
+  for (position = 0; position < total; position++) {
+    leftValue = left.value[position] && left.value[position][1] || leftValue;
+    rightValue = right.value[position] && right.value[position][1] || rightValue;
+
+    if (leftValue == Marker.COMMA || rightValue == Marker.COMMA) {
+      continue;
+    }
+
+    if (!fn(leftValue, rightValue, position, position <= lowerBound)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+module.exports = everyValuesPair;

node_modules/clean-css/lib/optimizer/level-2/properties/find-component-in.js

@@ -0,0 +1,38 @@
+var configuration = require('../../configuration');
+
+function findComponentIn(shorthand, longhand) {
+  var comparator = nameComparator(longhand);
+
+  return findInDirectComponents(shorthand, comparator) || findInSubComponents(shorthand, comparator);
+}
+
+function nameComparator(to) {
+  return function(property) {
+    return to.name === property.name;
+  };
+}
+
+function findInDirectComponents(shorthand, comparator) {
+  return shorthand.components.filter(comparator)[0];
+}
+
+function findInSubComponents(shorthand, comparator) {
+  var shorthandComponent;
+  var longhandMatch;
+  var i, l;
+
+  if (!configuration[shorthand.name].shorthandComponents) {
+    return;
+  }
+
+  for (i = 0, l = shorthand.components.length; i < l; i++) {
+    shorthandComponent = shorthand.components[i];
+    longhandMatch = findInDirectComponents(shorthandComponent, comparator);
+
+    if (longhandMatch) {
+      return longhandMatch;
+    }
+  }
+}
+
+module.exports = findComponentIn;