1 files changed, 0 insertions, 259 deletions
diff --git a/node_modules/clean-css/lib/optimizer/level-2/is-mergeable.js b/node_modules/clean-css/lib/optimizer/level-2/is-mergeable.js
deleted file mode 100644
index 29049302..00000000
--- a/node_modules/clean-css/lib/optimizer/level-2/is-mergeable.js
+++ /dev/null
@@ -1,259 +0,0 @@
-var Marker = require('../../tokenizer/marker');
-var split = require('../../utils/split');
-
-var DEEP_SELECTOR_PATTERN = /\/deep\//;
-var DOUBLE_COLON_PATTERN = /^::/;
-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) ||
-        (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 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;