code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _root = _interopRequireDefault(require("./selectors/root"));
var _selector = _interopRequireDefault(require("./selectors/selector"));
var _className = _interopRequireDefault(require("./selectors/className"));
var _comment = _interopRequireDefault(require("./selectors/comment"));
var _id = _interopRequireDefault(require("./selectors/id"));
var _tag = _interopRequireDefault(require("./selectors/tag"));
var _string = _interopRequireDefault(require("./selectors/string"));
var _pseudo = _interopRequireDefault(require("./selectors/pseudo"));
var _attribute = _interopRequireWildcard(require("./selectors/attribute"));
var _universal = _interopRequireDefault(require("./selectors/universal"));
var _combinator = _interopRequireDefault(require("./selectors/combinator"));
var _nesting = _interopRequireDefault(require("./selectors/nesting"));
var _sortAscending = _interopRequireDefault(require("./sortAscending"));
var _tokenize = _interopRequireWildcard(require("./tokenize"));
var tokens = _interopRequireWildcard(require("./tokenTypes"));
var types = _interopRequireWildcard(require("./selectors/types"));
var _util = require("./util");
var _WHITESPACE_TOKENS, _Object$assign;
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
var WHITESPACE_TOKENS = (_WHITESPACE_TOKENS = {}, _WHITESPACE_TOKENS[tokens.space] = true, _WHITESPACE_TOKENS[tokens.cr] = true, _WHITESPACE_TOKENS[tokens.feed] = true, _WHITESPACE_TOKENS[tokens.newline] = true, _WHITESPACE_TOKENS[tokens.tab] = true, _WHITESPACE_TOKENS);
var WHITESPACE_EQUIV_TOKENS = Object.assign({}, WHITESPACE_TOKENS, (_Object$assign = {}, _Object$assign[tokens.comment] = true, _Object$assign));
function tokenStart(token) {
  return {
    line: token[_tokenize.FIELDS.START_LINE],
    column: token[_tokenize.FIELDS.START_COL]
  };
}
function tokenEnd(token) {
  return {
    line: token[_tokenize.FIELDS.END_LINE],
    column: token[_tokenize.FIELDS.END_COL]
  };
}
function getSource(startLine, startColumn, endLine, endColumn) {
  return {
    start: {
      line: startLine,
      column: startColumn
    },
    end: {
      line: endLine,
      column: endColumn
    }
  };
}
function getTokenSource(token) {
  return getSource(token[_tokenize.FIELDS.START_LINE], token[_tokenize.FIELDS.START_COL], token[_tokenize.FIELDS.END_LINE], token[_tokenize.FIELDS.END_COL]);
}
function getTokenSourceSpan(startToken, endToken) {
  if (!startToken) {
    return undefined;
  }
  return getSource(startToken[_tokenize.FIELDS.START_LINE], startToken[_tokenize.FIELDS.START_COL], endToken[_tokenize.FIELDS.END_LINE], endToken[_tokenize.FIELDS.END_COL]);
}
function unescapeProp(node, prop) {
  var value = node[prop];
  if (typeof value !== "string") {
    return;
  }
  if (value.indexOf("\\") !== -1) {
    (0, _util.ensureObject)(node, 'raws');
    node[prop] = (0, _util.unesc)(value);
    if (node.raws[prop] === undefined) {
      node.raws[prop] = value;
    }
  }
  return node;
}
function indexesOf(array, item) {
  var i = -1;
  var indexes = [];
  while ((i = array.indexOf(item, i + 1)) !== -1) {
    indexes.push(i);
  }
  return indexes;
}
function uniqs() {
  var list = Array.prototype.concat.apply([], arguments);
  return list.filter(function (item, i) {
    return i === list.indexOf(item);
  });
}
var Parser = /*#__PURE__*/function () {
  function Parser(rule, options) {
    if (options === void 0) {
      options = {};
    }
    this.rule = rule;
    this.options = Object.assign({
      lossy: false,
      safe: false
    }, options);
    this.position = 0;
    this.css = typeof this.rule === 'string' ? this.rule : this.rule.selector;
    this.tokens = (0, _tokenize["default"])({
      css: this.css,
      error: this._errorGenerator(),
      safe: this.options.safe
    });
    var rootSource = getTokenSourceSpan(this.tokens[0], this.tokens[this.tokens.length - 1]);
    this.root = new _root["default"]({
      source: rootSource
    });
    this.root.errorGenerator = this._errorGenerator();
    var selector = new _selector["default"]({
      source: {
        start: {
          line: 1,
          column: 1
        }
      },
      sourceIndex: 0
    });
    this.root.append(selector);
    this.current = selector;
    this.loop();
  }
  var _proto = Parser.prototype;
  _proto._errorGenerator = function _errorGenerator() {
    var _this = this;
    return function (message, errorOptions) {
      if (typeof _this.rule === 'string') {
        return new Error(message);
      }
      return _this.rule.error(message, errorOptions);
    };
  };
  _proto.attribute = function attribute() {
    var attr = [];
    var startingToken = this.currToken;
    this.position++;
    while (this.position < this.tokens.length && this.currToken[_tokenize.FIELDS.TYPE] !== tokens.closeSquare) {
      attr.push(this.currToken);
      this.position++;
    }
    if (this.currToken[_tokenize.FIELDS.TYPE] !== tokens.closeSquare) {
      return this.expected('closing square bracket', this.currToken[_tokenize.FIELDS.START_POS]);
    }
    var len = attr.length;
    var node = {
      source: getSource(startingToken[1], startingToken[2], this.currToken[3], this.currToken[4]),
      sourceIndex: startingToken[_tokenize.FIELDS.START_POS]
    };
    if (len === 1 && !~[tokens.word].indexOf(attr[0][_tokenize.FIELDS.TYPE])) {
      return this.expected('attribute', attr[0][_tokenize.FIELDS.START_POS]);
    }
    var pos = 0;
    var spaceBefore = '';
    var commentBefore = '';
    var lastAdded = null;
    var spaceAfterMeaningfulToken = false;
    while (pos < len) {
      var token = attr[pos];
      var content = this.content(token);
      var next = attr[pos + 1];
      switch (token[_tokenize.FIELDS.TYPE]) {
        case tokens.space:
          // if (
          //     len === 1 ||
          //     pos === 0 && this.content(next) === '|'
          // ) {
          //     return this.expected('attribute', token[TOKEN.START_POS], content);
          // }
          spaceAfterMeaningfulToken = true;
          if (this.options.lossy) {
            break;
          }
          if (lastAdded) {
            (0, _util.ensureObject)(node, 'spaces', lastAdded);
            var prevContent = node.spaces[lastAdded].after || '';
            node.spaces[lastAdded].after = prevContent + content;
            var existingComment = (0, _util.getProp)(node, 'raws', 'spaces', lastAdded, 'after') || null;
            if (existingComment) {
              node.raws.spaces[lastAdded].after = existingComment + content;
            }
          } else {
            spaceBefore = spaceBefore + content;
            commentBefore = commentBefore + content;
          }
          break;
        case tokens.asterisk:
          if (next[_tokenize.FIELDS.TYPE] === tokens.equals) {
            node.operator = content;
            lastAdded = 'operator';
          } else if ((!node.namespace || lastAdded === "namespace" && !spaceAfterMeaningfulToken) && next) {
            if (spaceBefore) {
              (0, _util.ensureObject)(node, 'spaces', 'attribute');
              node.spaces.attribute.before = spaceBefore;
              spaceBefore = '';
            }
            if (commentBefore) {
              (0, _util.ensureObject)(node, 'raws', 'spaces', 'attribute');
              node.raws.spaces.attribute.before = spaceBefore;
              commentBefore = '';
            }
            node.namespace = (node.namespace || "") + content;
            var rawValue = (0, _util.getProp)(node, 'raws', 'namespace') || null;
            if (rawValue) {
              node.raws.namespace += content;
            }
            lastAdded = 'namespace';
          }
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.dollar:
          if (lastAdded === "value") {
            var oldRawValue = (0, _util.getProp)(node, 'raws', 'value');
            node.value += "$";
            if (oldRawValue) {
              node.raws.value = oldRawValue + "$";
            }
            break;
          }
        // Falls through
        case tokens.caret:
          if (next[_tokenize.FIELDS.TYPE] === tokens.equals) {
            node.operator = content;
            lastAdded = 'operator';
          }
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.combinator:
          if (content === '~' && next[_tokenize.FIELDS.TYPE] === tokens.equals) {
            node.operator = content;
            lastAdded = 'operator';
          }
          if (content !== '|') {
            spaceAfterMeaningfulToken = false;
            break;
          }
          if (next[_tokenize.FIELDS.TYPE] === tokens.equals) {
            node.operator = content;
            lastAdded = 'operator';
          } else if (!node.namespace && !node.attribute) {
            node.namespace = true;
          }
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.word:
          if (next && this.content(next) === '|' && attr[pos + 2] && attr[pos + 2][_tokenize.FIELDS.TYPE] !== tokens.equals &&
          // this look-ahead probably fails with comment nodes involved.
          !node.operator && !node.namespace) {
            node.namespace = content;
            lastAdded = 'namespace';
          } else if (!node.attribute || lastAdded === "attribute" && !spaceAfterMeaningfulToken) {
            if (spaceBefore) {
              (0, _util.ensureObject)(node, 'spaces', 'attribute');
              node.spaces.attribute.before = spaceBefore;
              spaceBefore = '';
            }
            if (commentBefore) {
              (0, _util.ensureObject)(node, 'raws', 'spaces', 'attribute');
              node.raws.spaces.attribute.before = commentBefore;
              commentBefore = '';
            }
            node.attribute = (node.attribute || "") + content;
            var _rawValue = (0, _util.getProp)(node, 'raws', 'attribute') || null;
            if (_rawValue) {
              node.raws.attribute += content;
            }
            lastAdded = 'attribute';
          } else if (!node.value && node.value !== "" || lastAdded === "value" && !(spaceAfterMeaningfulToken || node.quoteMark)) {
            var _unescaped = (0, _util.unesc)(content);
            var _oldRawValue = (0, _util.getProp)(node, 'raws', 'value') || '';
            var oldValue = node.value || '';
            node.value = oldValue + _unescaped;
            node.quoteMark = null;
            if (_unescaped !== content || _oldRawValue) {
              (0, _util.ensureObject)(node, 'raws');
              node.raws.value = (_oldRawValue || oldValue) + content;
            }
            lastAdded = 'value';
          } else {
            var insensitive = content === 'i' || content === "I";
            if ((node.value || node.value === '') && (node.quoteMark || spaceAfterMeaningfulToken)) {
              node.insensitive = insensitive;
              if (!insensitive || content === "I") {
                (0, _util.ensureObject)(node, 'raws');
                node.raws.insensitiveFlag = content;
              }
              lastAdded = 'insensitive';
              if (spaceBefore) {
                (0, _util.ensureObject)(node, 'spaces', 'insensitive');
                node.spaces.insensitive.before = spaceBefore;
                spaceBefore = '';
              }
              if (commentBefore) {
                (0, _util.ensureObject)(node, 'raws', 'spaces', 'insensitive');
                node.raws.spaces.insensitive.before = commentBefore;
                commentBefore = '';
              }
            } else if (node.value || node.value === '') {
              lastAdded = 'value';
              node.value += content;
              if (node.raws.value) {
                node.raws.value += content;
              }
            }
          }
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.str:
          if (!node.attribute || !node.operator) {
            return this.error("Expected an attribute followed by an operator preceding the string.", {
              index: token[_tokenize.FIELDS.START_POS]
            });
          }
          var _unescapeValue = (0, _attribute.unescapeValue)(content),
            unescaped = _unescapeValue.unescaped,
            quoteMark = _unescapeValue.quoteMark;
          node.value = unescaped;
          node.quoteMark = quoteMark;
          lastAdded = 'value';
          (0, _util.ensureObject)(node, 'raws');
          node.raws.value = content;
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.equals:
          if (!node.attribute) {
            return this.expected('attribute', token[_tokenize.FIELDS.START_POS], content);
          }
          if (node.value) {
            return this.error('Unexpected "=" found; an operator was already defined.', {
              index: token[_tokenize.FIELDS.START_POS]
            });
          }
          node.operator = node.operator ? node.operator + content : content;
          lastAdded = 'operator';
          spaceAfterMeaningfulToken = false;
          break;
        case tokens.comment:
          if (lastAdded) {
            if (spaceAfterMeaningfulToken || next && next[_tokenize.FIELDS.TYPE] === tokens.space || lastAdded === 'insensitive') {
              var lastComment = (0, _util.getProp)(node, 'spaces', lastAdded, 'after') || '';
              var rawLastComment = (0, _util.getProp)(node, 'raws', 'spaces', lastAdded, 'after') || lastComment;
              (0, _util.ensureObject)(node, 'raws', 'spaces', lastAdded);
              node.raws.spaces[lastAdded].after = rawLastComment + content;
            } else {
              var lastValue = node[lastAdded] || '';
              var rawLastValue = (0, _util.getProp)(node, 'raws', lastAdded) || lastValue;
              (0, _util.ensureObject)(node, 'raws');
              node.raws[lastAdded] = rawLastValue + content;
            }
          } else {
            commentBefore = commentBefore + content;
          }
          break;
        default:
          return this.error("Unexpected \"" + content + "\" found.", {
            index: token[_tokenize.FIELDS.START_POS]
          });
      }
      pos++;
    }
    unescapeProp(node, "attribute");
    unescapeProp(node, "namespace");
    this.newNode(new _attribute["default"](node));
    this.position++;
  }

  /**
   * return a node containing meaningless garbage up to (but not including) the specified token position.
   * if the token position is negative, all remaining tokens are consumed.
   *
   * This returns an array containing a single string node if all whitespace,
   * otherwise an array of comment nodes with space before and after.
   *
   * These tokens are not added to the current selector, the caller can add them or use them to amend
   * a previous node's space metadata.
   *
   * In lossy mode, this returns only comments.
   */;
  _proto.parseWhitespaceEquivalentTokens = function parseWhitespaceEquivalentTokens(stopPosition) {
    if (stopPosition < 0) {
      stopPosition = this.tokens.length;
    }
    var startPosition = this.position;
    var nodes = [];
    var space = "";
    var lastComment = undefined;
    do {
      if (WHITESPACE_TOKENS[this.currToken[_tokenize.FIELDS.TYPE]]) {
        if (!this.options.lossy) {
          space += this.content();
        }
      } else if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.comment) {
        var spaces = {};
        if (space) {
          spaces.before = space;
          space = "";
        }
        lastComment = new _comment["default"]({
          value: this.content(),
          source: getTokenSource(this.currToken),
          sourceIndex: this.currToken[_tokenize.FIELDS.START_POS],
          spaces: spaces
        });
        nodes.push(lastComment);
      }
    } while (++this.position < stopPosition);
    if (space) {
      if (lastComment) {
        lastComment.spaces.after = space;
      } else if (!this.options.lossy) {
        var firstToken = this.tokens[startPosition];
        var lastToken = this.tokens[this.position - 1];
        nodes.push(new _string["default"]({
          value: '',
          source: getSource(firstToken[_tokenize.FIELDS.START_LINE], firstToken[_tokenize.FIELDS.START_COL], lastToken[_tokenize.FIELDS.END_LINE], lastToken[_tokenize.FIELDS.END_COL]),
          sourceIndex: firstToken[_tokenize.FIELDS.START_POS],
          spaces: {
            before: space,
            after: ''
          }
        }));
      }
    }
    return nodes;
  }

  /**
   *
   * @param {*} nodes
   */;
  _proto.convertWhitespaceNodesToSpace = function convertWhitespaceNodesToSpace(nodes, requiredSpace) {
    var _this2 = this;
    if (requiredSpace === void 0) {
      requiredSpace = false;
    }
    var space = "";
    var rawSpace = "";
    nodes.forEach(function (n) {
      var spaceBefore = _this2.lossySpace(n.spaces.before, requiredSpace);
      var rawSpaceBefore = _this2.lossySpace(n.rawSpaceBefore, requiredSpace);
      space += spaceBefore + _this2.lossySpace(n.spaces.after, requiredSpace && spaceBefore.length === 0);
      rawSpace += spaceBefore + n.value + _this2.lossySpace(n.rawSpaceAfter, requiredSpace && rawSpaceBefore.length === 0);
    });
    if (rawSpace === space) {
      rawSpace = undefined;
    }
    var result = {
      space: space,
      rawSpace: rawSpace
    };
    return result;
  };
  _proto.isNamedCombinator = function isNamedCombinator(position) {
    if (position === void 0) {
      position = this.position;
    }
    return this.tokens[position + 0] && this.tokens[position + 0][_tokenize.FIELDS.TYPE] === tokens.slash && this.tokens[position + 1] && this.tokens[position + 1][_tokenize.FIELDS.TYPE] === tokens.word && this.tokens[position + 2] && this.tokens[position + 2][_tokenize.FIELDS.TYPE] === tokens.slash;
  };
  _proto.namedCombinator = function namedCombinator() {
    if (this.isNamedCombinator()) {
      var nameRaw = this.content(this.tokens[this.position + 1]);
      var name = (0, _util.unesc)(nameRaw).toLowerCase();
      var raws = {};
      if (name !== nameRaw) {
        raws.value = "/" + nameRaw + "/";
      }
      var node = new _combinator["default"]({
        value: "/" + name + "/",
        source: getSource(this.currToken[_tokenize.FIELDS.START_LINE], this.currToken[_tokenize.FIELDS.START_COL], this.tokens[this.position + 2][_tokenize.FIELDS.END_LINE], this.tokens[this.position + 2][_tokenize.FIELDS.END_COL]),
        sourceIndex: this.currToken[_tokenize.FIELDS.START_POS],
        raws: raws
      });
      this.position = this.position + 3;
      return node;
    } else {
      this.unexpected();
    }
  };
  _proto.combinator = function combinator() {
    var _this3 = this;
    if (this.content() === '|') {
      return this.namespace();
    }
    // We need to decide between a space that's a descendant combinator and meaningless whitespace at the end of a selector.
    var nextSigTokenPos = this.locateNextMeaningfulToken(this.position);
    if (nextSigTokenPos < 0 || this.tokens[nextSigTokenPos][_tokenize.FIELDS.TYPE] === tokens.comma) {
      var nodes = this.parseWhitespaceEquivalentTokens(nextSigTokenPos);
      if (nodes.length > 0) {
        var last = this.current.last;
        if (last) {
          var _this$convertWhitespa = this.convertWhitespaceNodesToSpace(nodes),
            space = _this$convertWhitespa.space,
            rawSpace = _this$convertWhitespa.rawSpace;
          if (rawSpace !== undefined) {
            last.rawSpaceAfter += rawSpace;
          }
          last.spaces.after += space;
        } else {
          nodes.forEach(function (n) {
            return _this3.newNode(n);
          });
        }
      }
      return;
    }
    var firstToken = this.currToken;
    var spaceOrDescendantSelectorNodes = undefined;
    if (nextSigTokenPos > this.position) {
      spaceOrDescendantSelectorNodes = this.parseWhitespaceEquivalentTokens(nextSigTokenPos);
    }
    var node;
    if (this.isNamedCombinator()) {
      node = this.namedCombinator();
    } else if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.combinator) {
      node = new _combinator["default"]({
        value: this.content(),
        source: getTokenSource(this.currToken),
        sourceIndex: this.currToken[_tokenize.FIELDS.START_POS]
      });
      this.position++;
    } else if (WHITESPACE_TOKENS[this.currToken[_tokenize.FIELDS.TYPE]]) {
      // pass
    } else if (!spaceOrDescendantSelectorNodes) {
      this.unexpected();
    }
    if (node) {
      if (spaceOrDescendantSelectorNodes) {
        var _this$convertWhitespa2 = this.convertWhitespaceNodesToSpace(spaceOrDescendantSelectorNodes),
          _space = _this$convertWhitespa2.space,
          _rawSpace = _this$convertWhitespa2.rawSpace;
        node.spaces.before = _space;
        node.rawSpaceBefore = _rawSpace;
      }
    } else {
      // descendant combinator
      var _this$convertWhitespa3 = this.convertWhitespaceNodesToSpace(spaceOrDescendantSelectorNodes, true),
        _space2 = _this$convertWhitespa3.space,
        _rawSpace2 = _this$convertWhitespa3.rawSpace;
      if (!_rawSpace2) {
        _rawSpace2 = _space2;
      }
      var spaces = {};
      var raws = {
        spaces: {}
      };
      if (_space2.endsWith(' ') && _rawSpace2.endsWith(' ')) {
        spaces.before = _space2.slice(0, _space2.length - 1);
        raws.spaces.before = _rawSpace2.slice(0, _rawSpace2.length - 1);
      } else if (_space2.startsWith(' ') && _rawSpace2.startsWith(' ')) {
        spaces.after = _space2.slice(1);
        raws.spaces.after = _rawSpace2.slice(1);
      } else {
        raws.value = _rawSpace2;
      }
      node = new _combinator["default"]({
        value: ' ',
        source: getTokenSourceSpan(firstToken, this.tokens[this.position - 1]),
        sourceIndex: firstToken[_tokenize.FIELDS.START_POS],
        spaces: spaces,
        raws: raws
      });
    }
    if (this.currToken && this.currToken[_tokenize.FIELDS.TYPE] === tokens.space) {
      node.spaces.after = this.optionalSpace(this.content());
      this.position++;
    }
    return this.newNode(node);
  };
  _proto.comma = function comma() {
    if (this.position === this.tokens.length - 1) {
      this.root.trailingComma = true;
      this.position++;
      return;
    }
    this.current._inferEndPosition();
    var selector = new _selector["default"]({
      source: {
        start: tokenStart(this.tokens[this.position + 1])
      },
      sourceIndex: this.tokens[this.position + 1][_tokenize.FIELDS.START_POS]
    });
    this.current.parent.append(selector);
    this.current = selector;
    this.position++;
  };
  _proto.comment = function comment() {
    var current = this.currToken;
    this.newNode(new _comment["default"]({
      value: this.content(),
      source: getTokenSource(current),
      sourceIndex: current[_tokenize.FIELDS.START_POS]
    }));
    this.position++;
  };
  _proto.error = function error(message, opts) {
    throw this.root.error(message, opts);
  };
  _proto.missingBackslash = function missingBackslash() {
    return this.error('Expected a backslash preceding the semicolon.', {
      index: this.currToken[_tokenize.FIELDS.START_POS]
    });
  };
  _proto.missingParenthesis = function missingParenthesis() {
    return this.expected('opening parenthesis', this.currToken[_tokenize.FIELDS.START_POS]);
  };
  _proto.missingSquareBracket = function missingSquareBracket() {
    return this.expected('opening square bracket', this.currToken[_tokenize.FIELDS.START_POS]);
  };
  _proto.unexpected = function unexpected() {
    return this.error("Unexpected '" + this.content() + "'. Escaping special characters with \\ may help.", this.currToken[_tokenize.FIELDS.START_POS]);
  };
  _proto.unexpectedPipe = function unexpectedPipe() {
    return this.error("Unexpected '|'.", this.currToken[_tokenize.FIELDS.START_POS]);
  };
  _proto.namespace = function namespace() {
    var before = this.prevToken && this.content(this.prevToken) || true;
    if (this.nextToken[_tokenize.FIELDS.TYPE] === tokens.word) {
      this.position++;
      return this.word(before);
    } else if (this.nextToken[_tokenize.FIELDS.TYPE] === tokens.asterisk) {
      this.position++;
      return this.universal(before);
    }
    this.unexpectedPipe();
  };
  _proto.nesting = function nesting() {
    if (this.nextToken) {
      var nextContent = this.content(this.nextToken);
      if (nextContent === "|") {
        this.position++;
        return;
      }
    }
    var current = this.currToken;
    this.newNode(new _nesting["default"]({
      value: this.content(),
      source: getTokenSource(current),
      sourceIndex: current[_tokenize.FIELDS.START_POS]
    }));
    this.position++;
  };
  _proto.parentheses = function parentheses() {
    var last = this.current.last;
    var unbalanced = 1;
    this.position++;
    if (last && last.type === types.PSEUDO) {
      var selector = new _selector["default"]({
        source: {
          start: tokenStart(this.tokens[this.position])
        },
        sourceIndex: this.tokens[this.position][_tokenize.FIELDS.START_POS]
      });
      var cache = this.current;
      last.append(selector);
      this.current = selector;
      while (this.position < this.tokens.length && unbalanced) {
        if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.openParenthesis) {
          unbalanced++;
        }
        if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.closeParenthesis) {
          unbalanced--;
        }
        if (unbalanced) {
          this.parse();
        } else {
          this.current.source.end = tokenEnd(this.currToken);
          this.current.parent.source.end = tokenEnd(this.currToken);
          this.position++;
        }
      }
      this.current = cache;
    } else {
      // I think this case should be an error. It's used to implement a basic parse of media queries
      // but I don't think it's a good idea.
      var parenStart = this.currToken;
      var parenValue = "(";
      var parenEnd;
      while (this.position < this.tokens.length && unbalanced) {
        if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.openParenthesis) {
          unbalanced++;
        }
        if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.closeParenthesis) {
          unbalanced--;
        }
        parenEnd = this.currToken;
        parenValue += this.parseParenthesisToken(this.currToken);
        this.position++;
      }
      if (last) {
        last.appendToPropertyAndEscape("value", parenValue, parenValue);
      } else {
        this.newNode(new _string["default"]({
          value: parenValue,
          source: getSource(parenStart[_tokenize.FIELDS.START_LINE], parenStart[_tokenize.FIELDS.START_COL], parenEnd[_tokenize.FIELDS.END_LINE], parenEnd[_tokenize.FIELDS.END_COL]),
          sourceIndex: parenStart[_tokenize.FIELDS.START_POS]
        }));
      }
    }
    if (unbalanced) {
      return this.expected('closing parenthesis', this.currToken[_tokenize.FIELDS.START_POS]);
    }
  };
  _proto.pseudo = function pseudo() {
    var _this4 = this;
    var pseudoStr = '';
    var startingToken = this.currToken;
    while (this.currToken && this.currToken[_tokenize.FIELDS.TYPE] === tokens.colon) {
      pseudoStr += this.content();
      this.position++;
    }
    if (!this.currToken) {
      return this.expected(['pseudo-class', 'pseudo-element'], this.position - 1);
    }
    if (this.currToken[_tokenize.FIELDS.TYPE] === tokens.word) {
      this.splitWord(false, function (first, length) {
        pseudoStr += first;
        _this4.newNode(new _pseudo["default"]({
          value: pseudoStr,
          source: getTokenSourceSpan(startingToken, _this4.currToken),
          sourceIndex: startingToken[_tokenize.FIELDS.START_POS]
        }));
        if (length > 1 && _this4.nextToken && _this4.nextToken[_tokenize.FIELDS.TYPE] === tokens.openParenthesis) {
          _this4.error('Misplaced parenthesis.', {
            index: _this4.nextToken[_tokenize.FIELDS.START_POS]
          });
        }
      });
    } else {
      return this.expected(['pseudo-class', 'pseudo-element'], this.currToken[_tokenize.FIELDS.START_POS]);
    }
  };
  _proto.space = function space() {
    var content = this.content();
    // Handle space before and after the selector
    if (this.position === 0 || this.prevToken[_tokenize.FIELDS.TYPE] === tokens.comma || this.prevToken[_tokenize.FIELDS.TYPE] === tokens.openParenthesis || this.current.nodes.every(function (node) {
      return node.type === 'comment';
    })) {
      this.spaces = this.optionalSpace(content);
      this.position++;
    } else if (this.position === this.tokens.length - 1 || this.nextToken[_tokenize.FIELDS.TYPE] === tokens.comma || this.nextToken[_tokenize.FIELDS.TYPE] === tokens.closeParenthesis) {
      this.current.last.spaces.after = this.optionalSpace(content);
      this.position++;
    } else {
      this.combinator();
    }
  };
  _proto.string = function string() {
    var current = this.currToken;
    this.newNode(new _string["default"]({
      value: this.content(),
      source: getTokenSource(current),
      sourceIndex: current[_tokenize.FIELDS.START_POS]
    }));
    this.position++;
  };
  _proto.universal = function universal(namespace) {
    var nextToken = this.nextToken;
    if (nextToken && this.content(nextToken) === '|') {
      this.position++;
      return this.namespace();
    }
    var current = this.currToken;
    this.newNode(new _universal["default"]({
      value: this.content(),
      source: getTokenSource(current),
      sourceIndex: current[_tokenize.FIELDS.START_POS]
    }), namespace);
    this.position++;
  };
  _proto.splitWord = function splitWord(namespace, firstCallback) {
    var _this5 = this;
    var nextToken = this.nextToken;
    var word = this.content();
    while (nextToken && ~[tokens.dollar, tokens.caret, tokens.equals, tokens.word].indexOf(nextToken[_tokenize.FIELDS.TYPE])) {
      this.position++;
      var current = this.content();
      word += current;
      if (current.lastIndexOf('\\') === current.length - 1) {
        var next = this.nextToken;
        if (next && next[_tokenize.FIELDS.TYPE] === tokens.space) {
          word += this.requiredSpace(this.content(next));
          this.position++;
        }
      }
      nextToken = this.nextToken;
    }
    var hasClass = indexesOf(word, '.').filter(function (i) {
      // Allow escaped dot within class name
      var escapedDot = word[i - 1] === '\\';
      // Allow decimal numbers percent in @keyframes
      var isKeyframesPercent = /^\d+\.\d+%$/.test(word);
      return !escapedDot && !isKeyframesPercent;
    });
    var hasId = indexesOf(word, '#').filter(function (i) {
      return word[i - 1] !== '\\';
    });
    // Eliminate Sass interpolations from the list of id indexes
    var interpolations = indexesOf(word, '#{');
    if (interpolations.length) {
      hasId = hasId.filter(function (hashIndex) {
        return !~interpolations.indexOf(hashIndex);
      });
    }
    var indices = (0, _sortAscending["default"])(uniqs([0].concat(hasClass, hasId)));
    indices.forEach(function (ind, i) {
      var index = indices[i + 1] || word.length;
      var value = word.slice(ind, index);
      if (i === 0 && firstCallback) {
        return firstCallback.call(_this5, value, indices.length);
      }
      var node;
      var current = _this5.currToken;
      var sourceIndex = current[_tokenize.FIELDS.START_POS] + indices[i];
      var source = getSource(current[1], current[2] + ind, current[3], current[2] + (index - 1));
      if (~hasClass.indexOf(ind)) {
        var classNameOpts = {
          value: value.slice(1),
          source: source,
          sourceIndex: sourceIndex
        };
        node = new _className["default"](unescapeProp(classNameOpts, "value"));
      } else if (~hasId.indexOf(ind)) {
        var idOpts = {
          value: value.slice(1),
          source: source,
          sourceIndex: sourceIndex
        };
        node = new _id["default"](unescapeProp(idOpts, "value"));
      } else {
        var tagOpts = {
          value: value,
          source: source,
          sourceIndex: sourceIndex
        };
        unescapeProp(tagOpts, "value");
        node = new _tag["default"](tagOpts);
      }
      _this5.newNode(node, namespace);
      // Ensure that the namespace is used only once
      namespace = null;
    });
    this.position++;
  };
  _proto.word = function word(namespace) {
    var nextToken = this.nextToken;
    if (nextToken && this.content(nextToken) === '|') {
      this.position++;
      return this.namespace();
    }
    return this.splitWord(namespace);
  };
  _proto.loop = function loop() {
    while (this.position < this.tokens.length) {
      this.parse(true);
    }
    this.current._inferEndPosition();
    return this.root;
  };
  _proto.parse = function parse(throwOnParenthesis) {
    switch (this.currToken[_tokenize.FIELDS.TYPE]) {
      case tokens.space:
        this.space();
        break;
      case tokens.comment:
        this.comment();
        break;
      case tokens.openParenthesis:
        this.parentheses();
        break;
      case tokens.closeParenthesis:
        if (throwOnParenthesis) {
          this.missingParenthesis();
        }
        break;
      case tokens.openSquare:
        this.attribute();
        break;
      case tokens.dollar:
      case tokens.caret:
      case tokens.equals:
      case tokens.word:
        this.word();
        break;
      case tokens.colon:
        this.pseudo();
        break;
      case tokens.comma:
        this.comma();
        break;
      case tokens.asterisk:
        this.universal();
        break;
      case tokens.ampersand:
        this.nesting();
        break;
      case tokens.slash:
      case tokens.combinator:
        this.combinator();
        break;
      case tokens.str:
        this.string();
        break;
      // These cases throw; no break needed.
      case tokens.closeSquare:
        this.missingSquareBracket();
      case tokens.semicolon:
        this.missingBackslash();
      default:
        this.unexpected();
    }
  }

  /**
   * Helpers
   */;
  _proto.expected = function expected(description, index, found) {
    if (Array.isArray(description)) {
      var last = description.pop();
      description = description.join(', ') + " or " + last;
    }
    var an = /^[aeiou]/.test(description[0]) ? 'an' : 'a';
    if (!found) {
      return this.error("Expected " + an + " " + description + ".", {
        index: index
      });
    }
    return this.error("Expected " + an + " " + description + ", found \"" + found + "\" instead.", {
      index: index
    });
  };
  _proto.requiredSpace = function requiredSpace(space) {
    return this.options.lossy ? ' ' : space;
  };
  _proto.optionalSpace = function optionalSpace(space) {
    return this.options.lossy ? '' : space;
  };
  _proto.lossySpace = function lossySpace(space, required) {
    if (this.options.lossy) {
      return required ? ' ' : '';
    } else {
      return space;
    }
  };
  _proto.parseParenthesisToken = function parseParenthesisToken(token) {
    var content = this.content(token);
    if (token[_tokenize.FIELDS.TYPE] === tokens.space) {
      return this.requiredSpace(content);
    } else {
      return content;
    }
  };
  _proto.newNode = function newNode(node, namespace) {
    if (namespace) {
      if (/^ +$/.test(namespace)) {
        if (!this.options.lossy) {
          this.spaces = (this.spaces || '') + namespace;
        }
        namespace = true;
      }
      node.namespace = namespace;
      unescapeProp(node, "namespace");
    }
    if (this.spaces) {
      node.spaces.before = this.spaces;
      this.spaces = '';
    }
    return this.current.append(node);
  };
  _proto.content = function content(token) {
    if (token === void 0) {
      token = this.currToken;
    }
    return this.css.slice(token[_tokenize.FIELDS.START_POS], token[_tokenize.FIELDS.END_POS]);
  };
  /**
   * returns the index of the next non-whitespace, non-comment token.
   * returns -1 if no meaningful token is found.
   */
  _proto.locateNextMeaningfulToken = function locateNextMeaningfulToken(startPosition) {
    if (startPosition === void 0) {
      startPosition = this.position + 1;
    }
    var searchPosition = startPosition;
    while (searchPosition < this.tokens.length) {
      if (WHITESPACE_EQUIV_TOKENS[this.tokens[searchPosition][_tokenize.FIELDS.TYPE]]) {
        searchPosition++;
        continue;
      } else {
        return searchPosition;
      }
    }
    return -1;
  };
  _createClass(Parser, [{
    key: "currToken",
    get: function get() {
      return this.tokens[this.position];
    }
  }, {
    key: "nextToken",
    get: function get() {
      return this.tokens[this.position + 1];
    }
  }, {
    key: "prevToken",
    get: function get() {
      return this.tokens[this.position - 1];
    }
  }]);
  return Parser;
}();
exports["default"] = Parser;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _parser = _interopRequireDefault(require("./parser"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
var Processor = /*#__PURE__*/function () {
  function Processor(func, options) {
    this.func = func || function noop() {};
    this.funcRes = null;
    this.options = options;
  }
  var _proto = Processor.prototype;
  _proto._shouldUpdateSelector = function _shouldUpdateSelector(rule, options) {
    if (options === void 0) {
      options = {};
    }
    var merged = Object.assign({}, this.options, options);
    if (merged.updateSelector === false) {
      return false;
    } else {
      return typeof rule !== "string";
    }
  };
  _proto._isLossy = function _isLossy(options) {
    if (options === void 0) {
      options = {};
    }
    var merged = Object.assign({}, this.options, options);
    if (merged.lossless === false) {
      return true;
    } else {
      return false;
    }
  };
  _proto._root = function _root(rule, options) {
    if (options === void 0) {
      options = {};
    }
    var parser = new _parser["default"](rule, this._parseOptions(options));
    return parser.root;
  };
  _proto._parseOptions = function _parseOptions(options) {
    return {
      lossy: this._isLossy(options)
    };
  };
  _proto._run = function _run(rule, options) {
    var _this = this;
    if (options === void 0) {
      options = {};
    }
    return new Promise(function (resolve, reject) {
      try {
        var root = _this._root(rule, options);
        Promise.resolve(_this.func(root)).then(function (transform) {
          var string = undefined;
          if (_this._shouldUpdateSelector(rule, options)) {
            string = root.toString();
            rule.selector = string;
          }
          return {
            transform: transform,
            root: root,
            string: string
          };
        }).then(resolve, reject);
      } catch (e) {
        reject(e);
        return;
      }
    });
  };
  _proto._runSync = function _runSync(rule, options) {
    if (options === void 0) {
      options = {};
    }
    var root = this._root(rule, options);
    var transform = this.func(root);
    if (transform && typeof transform.then === "function") {
      throw new Error("Selector processor returned a promise to a synchronous call.");
    }
    var string = undefined;
    if (options.updateSelector && typeof rule !== "string") {
      string = root.toString();
      rule.selector = string;
    }
    return {
      transform: transform,
      root: root,
      string: string
    };
  }

  /**
   * Process rule into a selector AST.
   *
   * @param rule {postcss.Rule | string} The css selector to be processed
   * @param options The options for processing
   * @returns {Promise<parser.Root>} The AST of the selector after processing it.
   */;
  _proto.ast = function ast(rule, options) {
    return this._run(rule, options).then(function (result) {
      return result.root;
    });
  }

  /**
   * Process rule into a selector AST synchronously.
   *
   * @param rule {postcss.Rule | string} The css selector to be processed
   * @param options The options for processing
   * @returns {parser.Root} The AST of the selector after processing it.
   */;
  _proto.astSync = function astSync(rule, options) {
    return this._runSync(rule, options).root;
  }

  /**
   * Process a selector into a transformed value asynchronously
   *
   * @param rule {postcss.Rule | string} The css selector to be processed
   * @param options The options for processing
   * @returns {Promise<any>} The value returned by the processor.
   */;
  _proto.transform = function transform(rule, options) {
    return this._run(rule, options).then(function (result) {
      return result.transform;
    });
  }

  /**
   * Process a selector into a transformed value synchronously.
   *
   * @param rule {postcss.Rule | string} The css selector to be processed
   * @param options The options for processing
   * @returns {any} The value returned by the processor.
   */;
  _proto.transformSync = function transformSync(rule, options) {
    return this._runSync(rule, options).transform;
  }

  /**
   * Process a selector into a new selector string asynchronously.
   *
   * @param rule {postcss.Rule | string} The css selector to be processed
   * @param options The options for processing
   * @returns {string} the selector after processing.
   */;
  _proto.process = function process(rule, options) {
    return this._run(rule, options).then(function (result) {
      return result.string || result.root.toString();
    });
  }

  /**
   * Process a selector into a new selector string synchronously.
   *
   * @param rule {postcss.Rule | string} The css selector to be processed
   * @param options The options for processing
   * @returns {string} the selector after processing.
   */;
  _proto.processSync = function processSync(rule, options) {
    var result = this._runSync(rule, options);
    return result.string || result.root.toString();
  };
  return Processor;
}();
exports["default"] = Processor;
module.exports = exports.default;

license: mit


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
exports.unescapeValue = unescapeValue;
var _cssesc = _interopRequireDefault(require("cssesc"));
var _unesc = _interopRequireDefault(require("../util/unesc"));
var _namespace = _interopRequireDefault(require("./namespace"));
var _types = require("./types");
var _CSSESC_QUOTE_OPTIONS;
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var deprecate = require("util-deprecate");
var WRAPPED_IN_QUOTES = /^('|")([^]*)\1$/;
var warnOfDeprecatedValueAssignment = deprecate(function () {}, "Assigning an attribute a value containing characters that might need to be escaped is deprecated. " + "Call attribute.setValue() instead.");
var warnOfDeprecatedQuotedAssignment = deprecate(function () {}, "Assigning attr.quoted is deprecated and has no effect. Assign to attr.quoteMark instead.");
var warnOfDeprecatedConstructor = deprecate(function () {}, "Constructing an Attribute selector with a value without specifying quoteMark is deprecated. Note: The value should be unescaped now.");
function unescapeValue(value) {
  var deprecatedUsage = false;
  var quoteMark = null;
  var unescaped = value;
  var m = unescaped.match(WRAPPED_IN_QUOTES);
  if (m) {
    quoteMark = m[1];
    unescaped = m[2];
  }
  unescaped = (0, _unesc["default"])(unescaped);
  if (unescaped !== value) {
    deprecatedUsage = true;
  }
  return {
    deprecatedUsage: deprecatedUsage,
    unescaped: unescaped,
    quoteMark: quoteMark
  };
}
function handleDeprecatedContructorOpts(opts) {
  if (opts.quoteMark !== undefined) {
    return opts;
  }
  if (opts.value === undefined) {
    return opts;
  }
  warnOfDeprecatedConstructor();
  var _unescapeValue = unescapeValue(opts.value),
    quoteMark = _unescapeValue.quoteMark,
    unescaped = _unescapeValue.unescaped;
  if (!opts.raws) {
    opts.raws = {};
  }
  if (opts.raws.value === undefined) {
    opts.raws.value = opts.value;
  }
  opts.value = unescaped;
  opts.quoteMark = quoteMark;
  return opts;
}
var Attribute = /*#__PURE__*/function (_Namespace) {
  _inheritsLoose(Attribute, _Namespace);
  function Attribute(opts) {
    var _this;
    if (opts === void 0) {
      opts = {};
    }
    _this = _Namespace.call(this, handleDeprecatedContructorOpts(opts)) || this;
    _this.type = _types.ATTRIBUTE;
    _this.raws = _this.raws || {};
    Object.defineProperty(_this.raws, 'unquoted', {
      get: deprecate(function () {
        return _this.value;
      }, "attr.raws.unquoted is deprecated. Call attr.value instead."),
      set: deprecate(function () {
        return _this.value;
      }, "Setting attr.raws.unquoted is deprecated and has no effect. attr.value is unescaped by default now.")
    });
    _this._constructed = true;
    return _this;
  }

  /**
   * Returns the Attribute's value quoted such that it would be legal to use
   * in the value of a css file. The original value's quotation setting
   * used for stringification is left unchanged. See `setValue(value, options)`
   * if you want to control the quote settings of a new value for the attribute.
   *
   * You can also change the quotation used for the current value by setting quoteMark.
   *
   * Options:
   *   * quoteMark {'"' | "'" | null} - Use this value to quote the value. If this
   *     option is not set, the original value for quoteMark will be used. If
   *     indeterminate, a double quote is used. The legal values are:
   *     * `null` - the value will be unquoted and characters will be escaped as necessary.
   *     * `'` - the value will be quoted with a single quote and single quotes are escaped.
   *     * `"` - the value will be quoted with a double quote and double quotes are escaped.
   *   * preferCurrentQuoteMark {boolean} - if true, prefer the source quote mark
   *     over the quoteMark option value.
   *   * smart {boolean} - if true, will select a quote mark based on the value
   *     and the other options specified here. See the `smartQuoteMark()`
   *     method.
   **/
  var _proto = Attribute.prototype;
  _proto.getQuotedValue = function getQuotedValue(options) {
    if (options === void 0) {
      options = {};
    }
    var quoteMark = this._determineQuoteMark(options);
    var cssescopts = CSSESC_QUOTE_OPTIONS[quoteMark];
    var escaped = (0, _cssesc["default"])(this._value, cssescopts);
    return escaped;
  };
  _proto._determineQuoteMark = function _determineQuoteMark(options) {
    return options.smart ? this.smartQuoteMark(options) : this.preferredQuoteMark(options);
  }

  /**
   * Set the unescaped value with the specified quotation options. The value
   * provided must not include any wrapping quote marks -- those quotes will
   * be interpreted as part of the value and escaped accordingly.
   */;
  _proto.setValue = function setValue(value, options) {
    if (options === void 0) {
      options = {};
    }
    this._value = value;
    this._quoteMark = this._determineQuoteMark(options);
    this._syncRawValue();
  }

  /**
   * Intelligently select a quoteMark value based on the value's contents. If
   * the value is a legal CSS ident, it will not be quoted. Otherwise a quote
   * mark will be picked that minimizes the number of escapes.
   *
   * If there's no clear winner, the quote mark from these options is used,
   * then the source quote mark (this is inverted if `preferCurrentQuoteMark` is
   * true). If the quoteMark is unspecified, a double quote is used.
   *
   * @param options This takes the quoteMark and preferCurrentQuoteMark options
   * from the quoteValue method.
   */;
  _proto.smartQuoteMark = function smartQuoteMark(options) {
    var v = this.value;
    var numSingleQuotes = v.replace(/[^']/g, '').length;
    var numDoubleQuotes = v.replace(/[^"]/g, '').length;
    if (numSingleQuotes + numDoubleQuotes === 0) {
      var escaped = (0, _cssesc["default"])(v, {
        isIdentifier: true
      });
      if (escaped === v) {
        return Attribute.NO_QUOTE;
      } else {
        var pref = this.preferredQuoteMark(options);
        if (pref === Attribute.NO_QUOTE) {
          // pick a quote mark that isn't none and see if it's smaller
          var quote = this.quoteMark || options.quoteMark || Attribute.DOUBLE_QUOTE;
          var opts = CSSESC_QUOTE_OPTIONS[quote];
          var quoteValue = (0, _cssesc["default"])(v, opts);
          if (quoteValue.length < escaped.length) {
            return quote;
          }
        }
        return pref;
      }
    } else if (numDoubleQuotes === numSingleQuotes) {
      return this.preferredQuoteMark(options);
    } else if (numDoubleQuotes < numSingleQuotes) {
      return Attribute.DOUBLE_QUOTE;
    } else {
      return Attribute.SINGLE_QUOTE;
    }
  }

  /**
   * Selects the preferred quote mark based on the options and the current quote mark value.
   * If you want the quote mark to depend on the attribute value, call `smartQuoteMark(opts)`
   * instead.
   */;
  _proto.preferredQuoteMark = function preferredQuoteMark(options) {
    var quoteMark = options.preferCurrentQuoteMark ? this.quoteMark : options.quoteMark;
    if (quoteMark === undefined) {
      quoteMark = options.preferCurrentQuoteMark ? options.quoteMark : this.quoteMark;
    }
    if (quoteMark === undefined) {
      quoteMark = Attribute.DOUBLE_QUOTE;
    }
    return quoteMark;
  };
  _proto._syncRawValue = function _syncRawValue() {
    var rawValue = (0, _cssesc["default"])(this._value, CSSESC_QUOTE_OPTIONS[this.quoteMark]);
    if (rawValue === this._value) {
      if (this.raws) {
        delete this.raws.value;
      }
    } else {
      this.raws.value = rawValue;
    }
  };
  _proto._handleEscapes = function _handleEscapes(prop, value) {
    if (this._constructed) {
      var escaped = (0, _cssesc["default"])(value, {
        isIdentifier: true
      });
      if (escaped !== value) {
        this.raws[prop] = escaped;
      } else {
        delete this.raws[prop];
      }
    }
  };
  _proto._spacesFor = function _spacesFor(name) {
    var attrSpaces = {
      before: '',
      after: ''
    };
    var spaces = this.spaces[name] || {};
    var rawSpaces = this.raws.spaces && this.raws.spaces[name] || {};
    return Object.assign(attrSpaces, spaces, rawSpaces);
  };
  _proto._stringFor = function _stringFor(name, spaceName, concat) {
    if (spaceName === void 0) {
      spaceName = name;
    }
    if (concat === void 0) {
      concat = defaultAttrConcat;
    }
    var attrSpaces = this._spacesFor(spaceName);
    return concat(this.stringifyProperty(name), attrSpaces);
  }

  /**
   * returns the offset of the attribute part specified relative to the
   * start of the node of the output string.
   *
   * * "ns" - alias for "namespace"
   * * "namespace" - the namespace if it exists.
   * * "attribute" - the attribute name
   * * "attributeNS" - the start of the attribute or its namespace
   * * "operator" - the match operator of the attribute
   * * "value" - The value (string or identifier)
   * * "insensitive" - the case insensitivity flag;
   * @param part One of the possible values inside an attribute.
   * @returns -1 if the name is invalid or the value doesn't exist in this attribute.
   */;
  _proto.offsetOf = function offsetOf(name) {
    var count = 1;
    var attributeSpaces = this._spacesFor("attribute");
    count += attributeSpaces.before.length;
    if (name === "namespace" || name === "ns") {
      return this.namespace ? count : -1;
    }
    if (name === "attributeNS") {
      return count;
    }
    count += this.namespaceString.length;
    if (this.namespace) {
      count += 1;
    }
    if (name === "attribute") {
      return count;
    }
    count += this.stringifyProperty("attribute").length;
    count += attributeSpaces.after.length;
    var operatorSpaces = this._spacesFor("operator");
    count += operatorSpaces.before.length;
    var operator = this.stringifyProperty("operator");
    if (name === "operator") {
      return operator ? count : -1;
    }
    count += operator.length;
    count += operatorSpaces.after.length;
    var valueSpaces = this._spacesFor("value");
    count += valueSpaces.before.length;
    var value = this.stringifyProperty("value");
    if (name === "value") {
      return value ? count : -1;
    }
    count += value.length;
    count += valueSpaces.after.length;
    var insensitiveSpaces = this._spacesFor("insensitive");
    count += insensitiveSpaces.before.length;
    if (name === "insensitive") {
      return this.insensitive ? count : -1;
    }
    return -1;
  };
  _proto.toString = function toString() {
    var _this2 = this;
    var selector = [this.rawSpaceBefore, '['];
    selector.push(this._stringFor('qualifiedAttribute', 'attribute'));
    if (this.operator && (this.value || this.value === '')) {
      selector.push(this._stringFor('operator'));
      selector.push(this._stringFor('value'));
      selector.push(this._stringFor('insensitiveFlag', 'insensitive', function (attrValue, attrSpaces) {
        if (attrValue.length > 0 && !_this2.quoted && attrSpaces.before.length === 0 && !(_this2.spaces.value && _this2.spaces.value.after)) {
          attrSpaces.before = " ";
        }
        return defaultAttrConcat(attrValue, attrSpaces);
      }));
    }
    selector.push(']');
    selector.push(this.rawSpaceAfter);
    return selector.join('');
  };
  _createClass(Attribute, [{
    key: "quoted",
    get: function get() {
      var qm = this.quoteMark;
      return qm === "'" || qm === '"';
    },
    set: function set(value) {
      warnOfDeprecatedQuotedAssignment();
    }

    /**
     * returns a single (`'`) or double (`"`) quote character if the value is quoted.
     * returns `null` if the value is not quoted.
     * returns `undefined` if the quotation state is unknown (this can happen when
     * the attribute is constructed without specifying a quote mark.)
     */
  }, {
    key: "quoteMark",
    get: function get() {
      return this._quoteMark;
    }

    /**
     * Set the quote mark to be used by this attribute's value.
     * If the quote mark changes, the raw (escaped) value at `attr.raws.value` of the attribute
     * value is updated accordingly.
     *
     * @param {"'" | '"' | null} quoteMark The quote mark or `null` if the value should be unquoted.
     */,
    set: function set(quoteMark) {
      if (!this._constructed) {
        this._quoteMark = quoteMark;
        return;
      }
      if (this._quoteMark !== quoteMark) {
        this._quoteMark = quoteMark;
        this._syncRawValue();
      }
    }
  }, {
    key: "qualifiedAttribute",
    get: function get() {
      return this.qualifiedName(this.raws.attribute || this.attribute);
    }
  }, {
    key: "insensitiveFlag",
    get: function get() {
      return this.insensitive ? 'i' : '';
    }
  }, {
    key: "value",
    get: function get() {
      return this._value;
    },
    set:
    /**
     * Before 3.0, the value had to be set to an escaped value including any wrapped
     * quote marks. In 3.0, the semantics of `Attribute.value` changed so that the value
     * is unescaped during parsing and any quote marks are removed.
     *
     * Because the ambiguity of this semantic change, if you set `attr.value = newValue`,
     * a deprecation warning is raised when the new value contains any characters that would
     * require escaping (including if it contains wrapped quotes).
     *
     * Instead, you should call `attr.setValue(newValue, opts)` and pass options that describe
     * how the new value is quoted.
     */
    function set(v) {
      if (this._constructed) {
        var _unescapeValue2 = unescapeValue(v),
          deprecatedUsage = _unescapeValue2.deprecatedUsage,
          unescaped = _unescapeValue2.unescaped,
          quoteMark = _unescapeValue2.quoteMark;
        if (deprecatedUsage) {
          warnOfDeprecatedValueAssignment();
        }
        if (unescaped === this._value && quoteMark === this._quoteMark) {
          return;
        }
        this._value = unescaped;
        this._quoteMark = quoteMark;
        this._syncRawValue();
      } else {
        this._value = v;
      }
    }
  }, {
    key: "insensitive",
    get: function get() {
      return this._insensitive;
    }

    /**
     * Set the case insensitive flag.
     * If the case insensitive flag changes, the raw (escaped) value at `attr.raws.insensitiveFlag`
     * of the attribute is updated accordingly.
     *
     * @param {true | false} insensitive true if the attribute should match case-insensitively.
     */,
    set: function set(insensitive) {
      if (!insensitive) {
        this._insensitive = false;

        // "i" and "I" can be used in "this.raws.insensitiveFlag" to store the original notation.
        // When setting `attr.insensitive = false` both should be erased to ensure correct serialization.
        if (this.raws && (this.raws.insensitiveFlag === 'I' || this.raws.insensitiveFlag === 'i')) {
          this.raws.insensitiveFlag = undefined;
        }
      }
      this._insensitive = insensitive;
    }
  }, {
    key: "attribute",
    get: function get() {
      return this._attribute;
    },
    set: function set(name) {
      this._handleEscapes("attribute", name);
      this._attribute = name;
    }
  }]);
  return Attribute;
}(_namespace["default"]);
exports["default"] = Attribute;
Attribute.NO_QUOTE = null;
Attribute.SINGLE_QUOTE = "'";
Attribute.DOUBLE_QUOTE = '"';
var CSSESC_QUOTE_OPTIONS = (_CSSESC_QUOTE_OPTIONS = {
  "'": {
    quotes: 'single',
    wrap: true
  },
  '"': {
    quotes: 'double',
    wrap: true
  }
}, _CSSESC_QUOTE_OPTIONS[null] = {
  isIdentifier: true
}, _CSSESC_QUOTE_OPTIONS);
function defaultAttrConcat(attrValue, attrSpaces) {
  return "" + attrSpaces.before + attrValue + attrSpaces.after;
}


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _cssesc = _interopRequireDefault(require("cssesc"));
var _util = require("../util");
var _node = _interopRequireDefault(require("./node"));
var _types = require("./types");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var ClassName = /*#__PURE__*/function (_Node) {
  _inheritsLoose(ClassName, _Node);
  function ClassName(opts) {
    var _this;
    _this = _Node.call(this, opts) || this;
    _this.type = _types.CLASS;
    _this._constructed = true;
    return _this;
  }
  var _proto = ClassName.prototype;
  _proto.valueToString = function valueToString() {
    return '.' + _Node.prototype.valueToString.call(this);
  };
  _createClass(ClassName, [{
    key: "value",
    get: function get() {
      return this._value;
    },
    set: function set(v) {
      if (this._constructed) {
        var escaped = (0, _cssesc["default"])(v, {
          isIdentifier: true
        });
        if (escaped !== v) {
          (0, _util.ensureObject)(this, "raws");
          this.raws.value = escaped;
        } else if (this.raws) {
          delete this.raws.value;
        }
      }
      this._value = v;
    }
  }]);
  return ClassName;
}(_node["default"]);
exports["default"] = ClassName;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _node = _interopRequireDefault(require("./node"));
var _types = require("./types");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var Combinator = /*#__PURE__*/function (_Node) {
  _inheritsLoose(Combinator, _Node);
  function Combinator(opts) {
    var _this;
    _this = _Node.call(this, opts) || this;
    _this.type = _types.COMBINATOR;
    return _this;
  }
  return Combinator;
}(_node["default"]);
exports["default"] = Combinator;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _node = _interopRequireDefault(require("./node"));
var _types = require("./types");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var Comment = /*#__PURE__*/function (_Node) {
  _inheritsLoose(Comment, _Node);
  function Comment(opts) {
    var _this;
    _this = _Node.call(this, opts) || this;
    _this.type = _types.COMMENT;
    return _this;
  }
  return Comment;
}(_node["default"]);
exports["default"] = Comment;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports.universal = exports.tag = exports.string = exports.selector = exports.root = exports.pseudo = exports.nesting = exports.id = exports.comment = exports.combinator = exports.className = exports.attribute = void 0;
var _attribute = _interopRequireDefault(require("./attribute"));
var _className = _interopRequireDefault(require("./className"));
var _combinator = _interopRequireDefault(require("./combinator"));
var _comment = _interopRequireDefault(require("./comment"));
var _id = _interopRequireDefault(require("./id"));
var _nesting = _interopRequireDefault(require("./nesting"));
var _pseudo = _interopRequireDefault(require("./pseudo"));
var _root = _interopRequireDefault(require("./root"));
var _selector = _interopRequireDefault(require("./selector"));
var _string = _interopRequireDefault(require("./string"));
var _tag = _interopRequireDefault(require("./tag"));
var _universal = _interopRequireDefault(require("./universal"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
var attribute = function attribute(opts) {
  return new _attribute["default"](opts);
};
exports.attribute = attribute;
var className = function className(opts) {
  return new _className["default"](opts);
};
exports.className = className;
var combinator = function combinator(opts) {
  return new _combinator["default"](opts);
};
exports.combinator = combinator;
var comment = function comment(opts) {
  return new _comment["default"](opts);
};
exports.comment = comment;
var id = function id(opts) {
  return new _id["default"](opts);
};
exports.id = id;
var nesting = function nesting(opts) {
  return new _nesting["default"](opts);
};
exports.nesting = nesting;
var pseudo = function pseudo(opts) {
  return new _pseudo["default"](opts);
};
exports.pseudo = pseudo;
var root = function root(opts) {
  return new _root["default"](opts);
};
exports.root = root;
var selector = function selector(opts) {
  return new _selector["default"](opts);
};
exports.selector = selector;
var string = function string(opts) {
  return new _string["default"](opts);
};
exports.string = string;
var tag = function tag(opts) {
  return new _tag["default"](opts);
};
exports.tag = tag;
var universal = function universal(opts) {
  return new _universal["default"](opts);
};
exports.universal = universal;


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _node = _interopRequireDefault(require("./node"));
var types = _interopRequireWildcard(require("./types"));
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _createForOfIteratorHelperLoose(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (it) return (it = it.call(o)).next.bind(it); if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; return function () { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var Container = /*#__PURE__*/function (_Node) {
  _inheritsLoose(Container, _Node);
  function Container(opts) {
    var _this;
    _this = _Node.call(this, opts) || this;
    if (!_this.nodes) {
      _this.nodes = [];
    }
    return _this;
  }
  var _proto = Container.prototype;
  _proto.append = function append(selector) {
    selector.parent = this;
    this.nodes.push(selector);
    return this;
  };
  _proto.prepend = function prepend(selector) {
    selector.parent = this;
    this.nodes.unshift(selector);
    return this;
  };
  _proto.at = function at(index) {
    return this.nodes[index];
  };
  _proto.index = function index(child) {
    if (typeof child === 'number') {
      return child;
    }
    return this.nodes.indexOf(child);
  };
  _proto.removeChild = function removeChild(child) {
    child = this.index(child);
    this.at(child).parent = undefined;
    this.nodes.splice(child, 1);
    var index;
    for (var id in this.indexes) {
      index = this.indexes[id];
      if (index >= child) {
        this.indexes[id] = index - 1;
      }
    }
    return this;
  };
  _proto.removeAll = function removeAll() {
    for (var _iterator = _createForOfIteratorHelperLoose(this.nodes), _step; !(_step = _iterator()).done;) {
      var node = _step.value;
      node.parent = undefined;
    }
    this.nodes = [];
    return this;
  };
  _proto.empty = function empty() {
    return this.removeAll();
  };
  _proto.insertAfter = function insertAfter(oldNode, newNode) {
    newNode.parent = this;
    var oldIndex = this.index(oldNode);
    this.nodes.splice(oldIndex + 1, 0, newNode);
    newNode.parent = this;
    var index;
    for (var id in this.indexes) {
      index = this.indexes[id];
      if (oldIndex <= index) {
        this.indexes[id] = index + 1;
      }
    }
    return this;
  };
  _proto.insertBefore = function insertBefore(oldNode, newNode) {
    newNode.parent = this;
    var oldIndex = this.index(oldNode);
    this.nodes.splice(oldIndex, 0, newNode);
    newNode.parent = this;
    var index;
    for (var id in this.indexes) {
      index = this.indexes[id];
      if (index <= oldIndex) {
        this.indexes[id] = index + 1;
      }
    }
    return this;
  };
  _proto._findChildAtPosition = function _findChildAtPosition(line, col) {
    var found = undefined;
    this.each(function (node) {
      if (node.atPosition) {
        var foundChild = node.atPosition(line, col);
        if (foundChild) {
          found = foundChild;
          return false;
        }
      } else if (node.isAtPosition(line, col)) {
        found = node;
        return false;
      }
    });
    return found;
  }

  /**
   * Return the most specific node at the line and column number given.
   * The source location is based on the original parsed location, locations aren't
   * updated as selector nodes are mutated.
   *
   * Note that this location is relative to the location of the first character
   * of the selector, and not the location of the selector in the overall document
   * when used in conjunction with postcss.
   *
   * If not found, returns undefined.
   * @param {number} line The line number of the node to find. (1-based index)
   * @param {number} col  The column number of the node to find. (1-based index)
   */;
  _proto.atPosition = function atPosition(line, col) {
    if (this.isAtPosition(line, col)) {
      return this._findChildAtPosition(line, col) || this;
    } else {
      return undefined;
    }
  };
  _proto._inferEndPosition = function _inferEndPosition() {
    if (this.last && this.last.source && this.last.source.end) {
      this.source = this.source || {};
      this.source.end = this.source.end || {};
      Object.assign(this.source.end, this.last.source.end);
    }
  };
  _proto.each = function each(callback) {
    if (!this.lastEach) {
      this.lastEach = 0;
    }
    if (!this.indexes) {
      this.indexes = {};
    }
    this.lastEach++;
    var id = this.lastEach;
    this.indexes[id] = 0;
    if (!this.length) {
      return undefined;
    }
    var index, result;
    while (this.indexes[id] < this.length) {
      index = this.indexes[id];
      result = callback(this.at(index), index);
      if (result === false) {
        break;
      }
      this.indexes[id] += 1;
    }
    delete this.indexes[id];
    if (result === false) {
      return false;
    }
  };
  _proto.walk = function walk(callback) {
    return this.each(function (node, i) {
      var result = callback(node, i);
      if (result !== false && node.length) {
        result = node.walk(callback);
      }
      if (result === false) {
        return false;
      }
    });
  };
  _proto.walkAttributes = function walkAttributes(callback) {
    var _this2 = this;
    return this.walk(function (selector) {
      if (selector.type === types.ATTRIBUTE) {
        return callback.call(_this2, selector);
      }
    });
  };
  _proto.walkClasses = function walkClasses(callback) {
    var _this3 = this;
    return this.walk(function (selector) {
      if (selector.type === types.CLASS) {
        return callback.call(_this3, selector);
      }
    });
  };
  _proto.walkCombinators = function walkCombinators(callback) {
    var _this4 = this;
    return this.walk(function (selector) {
      if (selector.type === types.COMBINATOR) {
        return callback.call(_this4, selector);
      }
    });
  };
  _proto.walkComments = function walkComments(callback) {
    var _this5 = this;
    return this.walk(function (selector) {
      if (selector.type === types.COMMENT) {
        return callback.call(_this5, selector);
      }
    });
  };
  _proto.walkIds = function walkIds(callback) {
    var _this6 = this;
    return this.walk(function (selector) {
      if (selector.type === types.ID) {
        return callback.call(_this6, selector);
      }
    });
  };
  _proto.walkNesting = function walkNesting(callback) {
    var _this7 = this;
    return this.walk(function (selector) {
      if (selector.type === types.NESTING) {
        return callback.call(_this7, selector);
      }
    });
  };
  _proto.walkPseudos = function walkPseudos(callback) {
    var _this8 = this;
    return this.walk(function (selector) {
      if (selector.type === types.PSEUDO) {
        return callback.call(_this8, selector);
      }
    });
  };
  _proto.walkTags = function walkTags(callback) {
    var _this9 = this;
    return this.walk(function (selector) {
      if (selector.type === types.TAG) {
        return callback.call(_this9, selector);
      }
    });
  };
  _proto.walkUniversals = function walkUniversals(callback) {
    var _this10 = this;
    return this.walk(function (selector) {
      if (selector.type === types.UNIVERSAL) {
        return callback.call(_this10, selector);
      }
    });
  };
  _proto.split = function split(callback) {
    var _this11 = this;
    var current = [];
    return this.reduce(function (memo, node, index) {
      var split = callback.call(_this11, node);
      current.push(node);
      if (split) {
        memo.push(current);
        current = [];
      } else if (index === _this11.length - 1) {
        memo.push(current);
      }
      return memo;
    }, []);
  };
  _proto.map = function map(callback) {
    return this.nodes.map(callback);
  };
  _proto.reduce = function reduce(callback, memo) {
    return this.nodes.reduce(callback, memo);
  };
  _proto.every = function every(callback) {
    return this.nodes.every(callback);
  };
  _proto.some = function some(callback) {
    return this.nodes.some(callback);
  };
  _proto.filter = function filter(callback) {
    return this.nodes.filter(callback);
  };
  _proto.sort = function sort(callback) {
    return this.nodes.sort(callback);
  };
  _proto.toString = function toString() {
    return this.map(String).join('');
  };
  _createClass(Container, [{
    key: "first",
    get: function get() {
      return this.at(0);
    }
  }, {
    key: "last",
    get: function get() {
      return this.at(this.length - 1);
    }
  }, {
    key: "length",
    get: function get() {
      return this.nodes.length;
    }
  }]);
  return Container;
}(_node["default"]);
exports["default"] = Container;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports.isComment = exports.isCombinator = exports.isClassName = exports.isAttribute = void 0;
exports.isContainer = isContainer;
exports.isIdentifier = void 0;
exports.isNamespace = isNamespace;
exports.isNesting = void 0;
exports.isNode = isNode;
exports.isPseudo = void 0;
exports.isPseudoClass = isPseudoClass;
exports.isPseudoElement = isPseudoElement;
exports.isUniversal = exports.isTag = exports.isString = exports.isSelector = exports.isRoot = void 0;
var _types = require("./types");
var _IS_TYPE;
var IS_TYPE = (_IS_TYPE = {}, _IS_TYPE[_types.ATTRIBUTE] = true, _IS_TYPE[_types.CLASS] = true, _IS_TYPE[_types.COMBINATOR] = true, _IS_TYPE[_types.COMMENT] = true, _IS_TYPE[_types.ID] = true, _IS_TYPE[_types.NESTING] = true, _IS_TYPE[_types.PSEUDO] = true, _IS_TYPE[_types.ROOT] = true, _IS_TYPE[_types.SELECTOR] = true, _IS_TYPE[_types.STRING] = true, _IS_TYPE[_types.TAG] = true, _IS_TYPE[_types.UNIVERSAL] = true, _IS_TYPE);
function isNode(node) {
  return typeof node === "object" && IS_TYPE[node.type];
}
function isNodeType(type, node) {
  return isNode(node) && node.type === type;
}
var isAttribute = isNodeType.bind(null, _types.ATTRIBUTE);
exports.isAttribute = isAttribute;
var isClassName = isNodeType.bind(null, _types.CLASS);
exports.isClassName = isClassName;
var isCombinator = isNodeType.bind(null, _types.COMBINATOR);
exports.isCombinator = isCombinator;
var isComment = isNodeType.bind(null, _types.COMMENT);
exports.isComment = isComment;
var isIdentifier = isNodeType.bind(null, _types.ID);
exports.isIdentifier = isIdentifier;
var isNesting = isNodeType.bind(null, _types.NESTING);
exports.isNesting = isNesting;
var isPseudo = isNodeType.bind(null, _types.PSEUDO);
exports.isPseudo = isPseudo;
var isRoot = isNodeType.bind(null, _types.ROOT);
exports.isRoot = isRoot;
var isSelector = isNodeType.bind(null, _types.SELECTOR);
exports.isSelector = isSelector;
var isString = isNodeType.bind(null, _types.STRING);
exports.isString = isString;
var isTag = isNodeType.bind(null, _types.TAG);
exports.isTag = isTag;
var isUniversal = isNodeType.bind(null, _types.UNIVERSAL);
exports.isUniversal = isUniversal;
function isPseudoElement(node) {
  return isPseudo(node) && node.value && (node.value.startsWith("::") || node.value.toLowerCase() === ":before" || node.value.toLowerCase() === ":after" || node.value.toLowerCase() === ":first-letter" || node.value.toLowerCase() === ":first-line");
}
function isPseudoClass(node) {
  return isPseudo(node) && !isPseudoElement(node);
}
function isContainer(node) {
  return !!(isNode(node) && node.walk);
}
function isNamespace(node) {
  return isAttribute(node) || isTag(node);
}


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _node = _interopRequireDefault(require("./node"));
var _types = require("./types");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var ID = /*#__PURE__*/function (_Node) {
  _inheritsLoose(ID, _Node);
  function ID(opts) {
    var _this;
    _this = _Node.call(this, opts) || this;
    _this.type = _types.ID;
    return _this;
  }
  var _proto = ID.prototype;
  _proto.valueToString = function valueToString() {
    return '#' + _Node.prototype.valueToString.call(this);
  };
  return ID;
}(_node["default"]);
exports["default"] = ID;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
var _types = require("./types");
Object.keys(_types).forEach(function (key) {
  if (key === "default" || key === "__esModule") return;
  if (key in exports && exports[key] === _types[key]) return;
  exports[key] = _types[key];
});
var _constructors = require("./constructors");
Object.keys(_constructors).forEach(function (key) {
  if (key === "default" || key === "__esModule") return;
  if (key in exports && exports[key] === _constructors[key]) return;
  exports[key] = _constructors[key];
});
var _guards = require("./guards");
Object.keys(_guards).forEach(function (key) {
  if (key === "default" || key === "__esModule") return;
  if (key in exports && exports[key] === _guards[key]) return;
  exports[key] = _guards[key];
});


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _cssesc = _interopRequireDefault(require("cssesc"));
var _util = require("../util");
var _node = _interopRequireDefault(require("./node"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var Namespace = /*#__PURE__*/function (_Node) {
  _inheritsLoose(Namespace, _Node);
  function Namespace() {
    return _Node.apply(this, arguments) || this;
  }
  var _proto = Namespace.prototype;
  _proto.qualifiedName = function qualifiedName(value) {
    if (this.namespace) {
      return this.namespaceString + "|" + value;
    } else {
      return value;
    }
  };
  _proto.valueToString = function valueToString() {
    return this.qualifiedName(_Node.prototype.valueToString.call(this));
  };
  _createClass(Namespace, [{
    key: "namespace",
    get: function get() {
      return this._namespace;
    },
    set: function set(namespace) {
      if (namespace === true || namespace === "*" || namespace === "&") {
        this._namespace = namespace;
        if (this.raws) {
          delete this.raws.namespace;
        }
        return;
      }
      var escaped = (0, _cssesc["default"])(namespace, {
        isIdentifier: true
      });
      this._namespace = namespace;
      if (escaped !== namespace) {
        (0, _util.ensureObject)(this, "raws");
        this.raws.namespace = escaped;
      } else if (this.raws) {
        delete this.raws.namespace;
      }
    }
  }, {
    key: "ns",
    get: function get() {
      return this._namespace;
    },
    set: function set(namespace) {
      this.namespace = namespace;
    }
  }, {
    key: "namespaceString",
    get: function get() {
      if (this.namespace) {
        var ns = this.stringifyProperty("namespace");
        if (ns === true) {
          return '';
        } else {
          return ns;
        }
      } else {
        return '';
      }
    }
  }]);
  return Namespace;
}(_node["default"]);
exports["default"] = Namespace;
;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _node = _interopRequireDefault(require("./node"));
var _types = require("./types");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var Nesting = /*#__PURE__*/function (_Node) {
  _inheritsLoose(Nesting, _Node);
  function Nesting(opts) {
    var _this;
    _this = _Node.call(this, opts) || this;
    _this.type = _types.NESTING;
    _this.value = '&';
    return _this;
  }
  return Nesting;
}(_node["default"]);
exports["default"] = Nesting;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _util = require("../util");
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
var cloneNode = function cloneNode(obj, parent) {
  if (typeof obj !== 'object' || obj === null) {
    return obj;
  }
  var cloned = new obj.constructor();
  for (var i in obj) {
    if (!obj.hasOwnProperty(i)) {
      continue;
    }
    var value = obj[i];
    var type = typeof value;
    if (i === 'parent' && type === 'object') {
      if (parent) {
        cloned[i] = parent;
      }
    } else if (value instanceof Array) {
      cloned[i] = value.map(function (j) {
        return cloneNode(j, cloned);
      });
    } else {
      cloned[i] = cloneNode(value, cloned);
    }
  }
  return cloned;
};
var Node = /*#__PURE__*/function () {
  function Node(opts) {
    if (opts === void 0) {
      opts = {};
    }
    Object.assign(this, opts);
    this.spaces = this.spaces || {};
    this.spaces.before = this.spaces.before || '';
    this.spaces.after = this.spaces.after || '';
  }
  var _proto = Node.prototype;
  _proto.remove = function remove() {
    if (this.parent) {
      this.parent.removeChild(this);
    }
    this.parent = undefined;
    return this;
  };
  _proto.replaceWith = function replaceWith() {
    if (this.parent) {
      for (var index in arguments) {
        this.parent.insertBefore(this, arguments[index]);
      }
      this.remove();
    }
    return this;
  };
  _proto.next = function next() {
    return this.parent.at(this.parent.index(this) + 1);
  };
  _proto.prev = function prev() {
    return this.parent.at(this.parent.index(this) - 1);
  };
  _proto.clone = function clone(overrides) {
    if (overrides === void 0) {
      overrides = {};
    }
    var cloned = cloneNode(this);
    for (var name in overrides) {
      cloned[name] = overrides[name];
    }
    return cloned;
  }

  /**
   * Some non-standard syntax doesn't follow normal escaping rules for css.
   * This allows non standard syntax to be appended to an existing property
   * by specifying the escaped value. By specifying the escaped value,
   * illegal characters are allowed to be directly inserted into css output.
   * @param {string} name the property to set
   * @param {any} value the unescaped value of the property
   * @param {string} valueEscaped optional. the escaped value of the property.
   */;
  _proto.appendToPropertyAndEscape = function appendToPropertyAndEscape(name, value, valueEscaped) {
    if (!this.raws) {
      this.raws = {};
    }
    var originalValue = this[name];
    var originalEscaped = this.raws[name];
    this[name] = originalValue + value; // this may trigger a setter that updates raws, so it has to be set first.
    if (originalEscaped || valueEscaped !== value) {
      this.raws[name] = (originalEscaped || originalValue) + valueEscaped;
    } else {
      delete this.raws[name]; // delete any escaped value that was created by the setter.
    }
  }

  /**
   * Some non-standard syntax doesn't follow normal escaping rules for css.
   * This allows the escaped value to be specified directly, allowing illegal
   * characters to be directly inserted into css output.
   * @param {string} name the property to set
   * @param {any} value the unescaped value of the property
   * @param {string} valueEscaped the escaped value of the property.
   */;
  _proto.setPropertyAndEscape = function setPropertyAndEscape(name, value, valueEscaped) {
    if (!this.raws) {
      this.raws = {};
    }
    this[name] = value; // this may trigger a setter that updates raws, so it has to be set first.
    this.raws[name] = valueEscaped;
  }

  /**
   * When you want a value to passed through to CSS directly. This method
   * deletes the corresponding raw value causing the stringifier to fallback
   * to the unescaped value.
   * @param {string} name the property to set.
   * @param {any} value The value that is both escaped and unescaped.
   */;
  _proto.setPropertyWithoutEscape = function setPropertyWithoutEscape(name, value) {
    this[name] = value; // this may trigger a setter that updates raws, so it has to be set first.
    if (this.raws) {
      delete this.raws[name];
    }
  }

  /**
   *
   * @param {number} line The number (starting with 1)
   * @param {number} column The column number (starting with 1)
   */;
  _proto.isAtPosition = function isAtPosition(line, column) {
    if (this.source && this.source.start && this.source.end) {
      if (this.source.start.line > line) {
        return false;
      }
      if (this.source.end.line < line) {
        return false;
      }
      if (this.source.start.line === line && this.source.start.column > column) {
        return false;
      }
      if (this.source.end.line === line && this.source.end.column < column) {
        return false;
      }
      return true;
    }
    return undefined;
  };
  _proto.stringifyProperty = function stringifyProperty(name) {
    return this.raws && this.raws[name] || this[name];
  };
  _proto.valueToString = function valueToString() {
    return String(this.stringifyProperty("value"));
  };
  _proto.toString = function toString() {
    return [this.rawSpaceBefore, this.valueToString(), this.rawSpaceAfter].join('');
  };
  _createClass(Node, [{
    key: "rawSpaceBefore",
    get: function get() {
      var rawSpace = this.raws && this.raws.spaces && this.raws.spaces.before;
      if (rawSpace === undefined) {
        rawSpace = this.spaces && this.spaces.before;
      }
      return rawSpace || "";
    },
    set: function set(raw) {
      (0, _util.ensureObject)(this, "raws", "spaces");
      this.raws.spaces.before = raw;
    }
  }, {
    key: "rawSpaceAfter",
    get: function get() {
      var rawSpace = this.raws && this.raws.spaces && this.raws.spaces.after;
      if (rawSpace === undefined) {
        rawSpace = this.spaces.after;
      }
      return rawSpace || "";
    },
    set: function set(raw) {
      (0, _util.ensureObject)(this, "raws", "spaces");
      this.raws.spaces.after = raw;
    }
  }]);
  return Node;
}();
exports["default"] = Node;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _container = _interopRequireDefault(require("./container"));
var _types = require("./types");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var Pseudo = /*#__PURE__*/function (_Container) {
  _inheritsLoose(Pseudo, _Container);
  function Pseudo(opts) {
    var _this;
    _this = _Container.call(this, opts) || this;
    _this.type = _types.PSEUDO;
    return _this;
  }
  var _proto = Pseudo.prototype;
  _proto.toString = function toString() {
    var params = this.length ? '(' + this.map(String).join(',') + ')' : '';
    return [this.rawSpaceBefore, this.stringifyProperty("value"), params, this.rawSpaceAfter].join('');
  };
  return Pseudo;
}(_container["default"]);
exports["default"] = Pseudo;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _container = _interopRequireDefault(require("./container"));
var _types = require("./types");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var Root = /*#__PURE__*/function (_Container) {
  _inheritsLoose(Root, _Container);
  function Root(opts) {
    var _this;
    _this = _Container.call(this, opts) || this;
    _this.type = _types.ROOT;
    return _this;
  }
  var _proto = Root.prototype;
  _proto.toString = function toString() {
    var str = this.reduce(function (memo, selector) {
      memo.push(String(selector));
      return memo;
    }, []).join(',');
    return this.trailingComma ? str + ',' : str;
  };
  _proto.error = function error(message, options) {
    if (this._error) {
      return this._error(message, options);
    } else {
      return new Error(message);
    }
  };
  _createClass(Root, [{
    key: "errorGenerator",
    set: function set(handler) {
      this._error = handler;
    }
  }]);
  return Root;
}(_container["default"]);
exports["default"] = Root;
module.exports = exports.default;


code:
"use strict";

exports.__esModule = true;
exports["default"] = void 0;
var _container = _interopRequireDefault(require("./container"));
var _types = require("./types");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
var Selector = /*#__PURE__*/function (_Container) {
  _inheritsLoose(Selector, _Container);
  function Selector(opts) {
    var _this;
    _this = _Container.call(this, opts) || this;
    _this.type = _types.SELECTOR;
    return _this;
  }
  return Selector;
}(_container["default"]);
exports["default"] = Selector;
module.exports = exports.default;