import { Options, tokenize as tokenize$1 } from 'linkifyjs';

/**
 * generated from https://raw.githubusercontent.com/w3c/html/26b5126f96f736f796b9e29718138919dd513744/entities.json
 * do not edit
 */
var HTML5NamedCharRefs = {
  // We don't need the complete named character reference because linkifyHtml
  // does not modify the escape sequences. We do need   so that
  // whitespace is parsed properly. Other types of whitespace should already
  // be accounted for. > < and " are also frequently relevant ones
  amp: "&",
  gt: ">",
  lt: "<",
  nbsp: " ",
  quot: "\""
};
var HEXCHARCODE = /^#[xX]([A-Fa-f0-9]+)$/;
var CHARCODE = /^#([0-9]+)$/;
var NAMED = /^([A-Za-z0-9]+)$/;
var EntityParser = /** @class */function () {
  function EntityParser(named) {
    this.named = named;
  }
  EntityParser.prototype.parse = function (entity) {
    if (!entity) {
      return;
    }
    var matches = entity.match(HEXCHARCODE);
    if (matches) {
      return String.fromCharCode(parseInt(matches[1], 16));
    }
    matches = entity.match(CHARCODE);
    if (matches) {
      return String.fromCharCode(parseInt(matches[1], 10));
    }
    matches = entity.match(NAMED);
    if (matches) {
      return this.named[matches[1]] || "&" + matches[1] + ";";
    }
  };
  return EntityParser;
}();
var WSP = /[\t\n\f ]/;
var ALPHA = /[A-Za-z]/;
var CRLF = /\r\n?/g;
function isSpace(char) {
  return WSP.test(char);
}
function isAlpha(char) {
  return ALPHA.test(char);
}
function preprocessInput(input) {
  return input.replace(CRLF, '\n');
}
var EventedTokenizer = /** @class */function () {
  function EventedTokenizer(delegate, entityParser, mode) {
    if (mode === void 0) {
      mode = 'precompile';
    }
    this.delegate = delegate;
    this.entityParser = entityParser;
    this.mode = mode;
    this.state = "beforeData" /* beforeData */;
    this.line = -1;
    this.column = -1;
    this.input = '';
    this.index = -1;
    this.tagNameBuffer = '';
    this.states = {
      beforeData: function () {
        var char = this.peek();
        if (char === '<' && !this.isIgnoredEndTag()) {
          this.transitionTo("tagOpen" /* tagOpen */);
          this.markTagStart();
          this.consume();
        } else {
          if (this.mode === 'precompile' && char === '\n') {
            var tag = this.tagNameBuffer.toLowerCase();
            if (tag === 'pre' || tag === 'textarea') {
              this.consume();
            }
          }
          this.transitionTo("data" /* data */);
          this.delegate.beginData();
        }
      },
      data: function () {
        var char = this.peek();
        var tag = this.tagNameBuffer;
        if (char === '<' && !this.isIgnoredEndTag()) {
          this.delegate.finishData();
          this.transitionTo("tagOpen" /* tagOpen */);
          this.markTagStart();
          this.consume();
        } else if (char === '&' && tag !== 'script' && tag !== 'style') {
          this.consume();
          this.delegate.appendToData(this.consumeCharRef() || '&');
        } else {
          this.consume();
          this.delegate.appendToData(char);
        }
      },
      tagOpen: function () {
        var char = this.consume();
        if (char === '!') {
          this.transitionTo("markupDeclarationOpen" /* markupDeclarationOpen */);
        } else if (char === '/') {
          this.transitionTo("endTagOpen" /* endTagOpen */);
        } else if (char === '@' || char === ':' || isAlpha(char)) {
          this.transitionTo("tagName" /* tagName */);
          this.tagNameBuffer = '';
          this.delegate.beginStartTag();
          this.appendToTagName(char);
        }
      },
      markupDeclarationOpen: function () {
        var char = this.consume();
        if (char === '-' && this.peek() === '-') {
          this.consume();
          this.transitionTo("commentStart" /* commentStart */);
          this.delegate.beginComment();
        } else {
          var maybeDoctype = char.toUpperCase() + this.input.substring(this.index, this.index + 6).toUpperCase();
          if (maybeDoctype === 'DOCTYPE') {
            this.consume();
            this.consume();
            this.consume();
            this.consume();
            this.consume();
            this.consume();
            this.transitionTo("doctype" /* doctype */);
            if (this.delegate.beginDoctype) this.delegate.beginDoctype();
          }
        }
      },
      doctype: function () {
        var char = this.consume();
        if (isSpace(char)) {
          this.transitionTo("beforeDoctypeName" /* beforeDoctypeName */);
        }
      },
      beforeDoctypeName: function () {
        var char = this.consume();
        if (isSpace(char)) {
          return;
        } else {
          this.transitionTo("doctypeName" /* doctypeName */);
          if (this.delegate.appendToDoctypeName) this.delegate.appendToDoctypeName(char.toLowerCase());
        }
      },
      doctypeName: function () {
        var char = this.consume();
        if (isSpace(char)) {
          this.transitionTo("afterDoctypeName" /* afterDoctypeName */);
        } else if (char === '>') {
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          if (this.delegate.appendToDoctypeName) this.delegate.appendToDoctypeName(char.toLowerCase());
        }
      },
      afterDoctypeName: function () {
        var char = this.consume();
        if (isSpace(char)) {
          return;
        } else if (char === '>') {
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          var nextSixChars = char.toUpperCase() + this.input.substring(this.index, this.index + 5).toUpperCase();
          var isPublic = nextSixChars.toUpperCase() === 'PUBLIC';
          var isSystem = nextSixChars.toUpperCase() === 'SYSTEM';
          if (isPublic || isSystem) {
            this.consume();
            this.consume();
            this.consume();
            this.consume();
            this.consume();
            this.consume();
          }
          if (isPublic) {
            this.transitionTo("afterDoctypePublicKeyword" /* afterDoctypePublicKeyword */);
          } else if (isSystem) {
            this.transitionTo("afterDoctypeSystemKeyword" /* afterDoctypeSystemKeyword */);
          }
        }
      },
      afterDoctypePublicKeyword: function () {
        var char = this.peek();
        if (isSpace(char)) {
          this.transitionTo("beforeDoctypePublicIdentifier" /* beforeDoctypePublicIdentifier */);
          this.consume();
        } else if (char === '"') {
          this.transitionTo("doctypePublicIdentifierDoubleQuoted" /* doctypePublicIdentifierDoubleQuoted */);
          this.consume();
        } else if (char === "'") {
          this.transitionTo("doctypePublicIdentifierSingleQuoted" /* doctypePublicIdentifierSingleQuoted */);
          this.consume();
        } else if (char === '>') {
          this.consume();
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        }
      },
      doctypePublicIdentifierDoubleQuoted: function () {
        var char = this.consume();
        if (char === '"') {
          this.transitionTo("afterDoctypePublicIdentifier" /* afterDoctypePublicIdentifier */);
        } else if (char === '>') {
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          if (this.delegate.appendToDoctypePublicIdentifier) this.delegate.appendToDoctypePublicIdentifier(char);
        }
      },
      doctypePublicIdentifierSingleQuoted: function () {
        var char = this.consume();
        if (char === "'") {
          this.transitionTo("afterDoctypePublicIdentifier" /* afterDoctypePublicIdentifier */);
        } else if (char === '>') {
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          if (this.delegate.appendToDoctypePublicIdentifier) this.delegate.appendToDoctypePublicIdentifier(char);
        }
      },
      afterDoctypePublicIdentifier: function () {
        var char = this.consume();
        if (isSpace(char)) {
          this.transitionTo("betweenDoctypePublicAndSystemIdentifiers" /* betweenDoctypePublicAndSystemIdentifiers */);
        } else if (char === '>') {
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        } else if (char === '"') {
          this.transitionTo("doctypeSystemIdentifierDoubleQuoted" /* doctypeSystemIdentifierDoubleQuoted */);
        } else if (char === "'") {
          this.transitionTo("doctypeSystemIdentifierSingleQuoted" /* doctypeSystemIdentifierSingleQuoted */);
        }
      },
      betweenDoctypePublicAndSystemIdentifiers: function () {
        var char = this.consume();
        if (isSpace(char)) {
          return;
        } else if (char === '>') {
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        } else if (char === '"') {
          this.transitionTo("doctypeSystemIdentifierDoubleQuoted" /* doctypeSystemIdentifierDoubleQuoted */);
        } else if (char === "'") {
          this.transitionTo("doctypeSystemIdentifierSingleQuoted" /* doctypeSystemIdentifierSingleQuoted */);
        }
      },
      doctypeSystemIdentifierDoubleQuoted: function () {
        var char = this.consume();
        if (char === '"') {
          this.transitionTo("afterDoctypeSystemIdentifier" /* afterDoctypeSystemIdentifier */);
        } else if (char === '>') {
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          if (this.delegate.appendToDoctypeSystemIdentifier) this.delegate.appendToDoctypeSystemIdentifier(char);
        }
      },
      doctypeSystemIdentifierSingleQuoted: function () {
        var char = this.consume();
        if (char === "'") {
          this.transitionTo("afterDoctypeSystemIdentifier" /* afterDoctypeSystemIdentifier */);
        } else if (char === '>') {
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          if (this.delegate.appendToDoctypeSystemIdentifier) this.delegate.appendToDoctypeSystemIdentifier(char);
        }
      },
      afterDoctypeSystemIdentifier: function () {
        var char = this.consume();
        if (isSpace(char)) {
          return;
        } else if (char === '>') {
          if (this.delegate.endDoctype) this.delegate.endDoctype();
          this.transitionTo("beforeData" /* beforeData */);
        }
      },
      commentStart: function () {
        var char = this.consume();
        if (char === '-' && this.peek() === '-') {
          this.transitionTo("commentStartDash" /* commentStartDash */);
        } else if (char === '>') {
          this.delegate.finishComment();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          this.delegate.appendToCommentData(char);
          this.transitionTo("comment" /* comment */);
        }
      },
      commentStartDash: function () {
        var char = this.consume();
        if (char === '-') {
          this.transitionTo("commentEnd" /* commentEnd */);
        } else if (char === '>') {
          this.delegate.finishComment();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          this.delegate.appendToCommentData('-');
          this.transitionTo("comment" /* comment */);
        }
      },
      comment: function () {
        var char = this.consume();
        if (char === '-') {
          this.transitionTo("commentEndDash" /* commentEndDash */);
        } else {
          this.delegate.appendToCommentData(char);
        }
      },
      commentEndDash: function () {
        var char = this.consume();
        if (char === '-' && this.peek() === '-') {
          this.delegate.appendToCommentData(char);
        } else if (char === '-') {
          this.transitionTo("commentEnd" /* commentEnd */);
        } else {
          this.delegate.appendToCommentData('-' + char);
          this.transitionTo("comment" /* comment */);
        }
      },
      commentEnd: function () {
        var char = this.consume();
        if (char === '>') {
          this.delegate.finishComment();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          this.delegate.appendToCommentData('--' + char);
          this.transitionTo("comment" /* comment */);
        }
      },
      tagName: function () {
        var char = this.consume();
        if (isSpace(char)) {
          this.transitionTo("beforeAttributeName" /* beforeAttributeName */);
        } else if (char === '/') {
          this.transitionTo("selfClosingStartTag" /* selfClosingStartTag */);
        } else if (char === '>') {
          this.delegate.finishTag();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          this.appendToTagName(char);
        }
      },
      endTagName: function () {
        var char = this.consume();
        if (isSpace(char)) {
          this.transitionTo("beforeAttributeName" /* beforeAttributeName */);
          this.tagNameBuffer = '';
        } else if (char === '/') {
          this.transitionTo("selfClosingStartTag" /* selfClosingStartTag */);
          this.tagNameBuffer = '';
        } else if (char === '>') {
          this.delegate.finishTag();
          this.transitionTo("beforeData" /* beforeData */);
          this.tagNameBuffer = '';
        } else {
          this.appendToTagName(char);
        }
      },
      beforeAttributeName: function () {
        var char = this.peek();
        if (isSpace(char)) {
          this.consume();
          return;
        } else if (char === '/') {
          this.transitionTo("selfClosingStartTag" /* selfClosingStartTag */);
          this.consume();
        } else if (char === '>') {
          this.consume();
          this.delegate.finishTag();
          this.transitionTo("beforeData" /* beforeData */);
        } else if (char === '=') {
          this.delegate.reportSyntaxError('attribute name cannot start with equals sign');
          this.transitionTo("attributeName" /* attributeName */);
          this.delegate.beginAttribute();
          this.consume();
          this.delegate.appendToAttributeName(char);
        } else {
          this.transitionTo("attributeName" /* attributeName */);
          this.delegate.beginAttribute();
        }
      },
      attributeName: function () {
        var char = this.peek();
        if (isSpace(char)) {
          this.transitionTo("afterAttributeName" /* afterAttributeName */);
          this.consume();
        } else if (char === '/') {
          this.delegate.beginAttributeValue(false);
          this.delegate.finishAttributeValue();
          this.consume();
          this.transitionTo("selfClosingStartTag" /* selfClosingStartTag */);
        } else if (char === '=') {
          this.transitionTo("beforeAttributeValue" /* beforeAttributeValue */);
          this.consume();
        } else if (char === '>') {
          this.delegate.beginAttributeValue(false);
          this.delegate.finishAttributeValue();
          this.consume();
          this.delegate.finishTag();
          this.transitionTo("beforeData" /* beforeData */);
        } else if (char === '"' || char === "'" || char === '<') {
          this.delegate.reportSyntaxError(char + ' is not a valid character within attribute names');
          this.consume();
          this.delegate.appendToAttributeName(char);
        } else {
          this.consume();
          this.delegate.appendToAttributeName(char);
        }
      },
      afterAttributeName: function () {
        var char = this.peek();
        if (isSpace(char)) {
          this.consume();
          return;
        } else if (char === '/') {
          this.delegate.beginAttributeValue(false);
          this.delegate.finishAttributeValue();
          this.consume();
          this.transitionTo("selfClosingStartTag" /* selfClosingStartTag */);
        } else if (char === '=') {
          this.consume();
          this.transitionTo("beforeAttributeValue" /* beforeAttributeValue */);
        } else if (char === '>') {
          this.delegate.beginAttributeValue(false);
          this.delegate.finishAttributeValue();
          this.consume();
          this.delegate.finishTag();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          this.delegate.beginAttributeValue(false);
          this.delegate.finishAttributeValue();
          this.transitionTo("attributeName" /* attributeName */);
          this.delegate.beginAttribute();
          this.consume();
          this.delegate.appendToAttributeName(char);
        }
      },
      beforeAttributeValue: function () {
        var char = this.peek();
        if (isSpace(char)) {
          this.consume();
        } else if (char === '"') {
          this.transitionTo("attributeValueDoubleQuoted" /* attributeValueDoubleQuoted */);
          this.delegate.beginAttributeValue(true);
          this.consume();
        } else if (char === "'") {
          this.transitionTo("attributeValueSingleQuoted" /* attributeValueSingleQuoted */);
          this.delegate.beginAttributeValue(true);
          this.consume();
        } else if (char === '>') {
          this.delegate.beginAttributeValue(false);
          this.delegate.finishAttributeValue();
          this.consume();
          this.delegate.finishTag();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          this.transitionTo("attributeValueUnquoted" /* attributeValueUnquoted */);
          this.delegate.beginAttributeValue(false);
          this.consume();
          this.delegate.appendToAttributeValue(char);
        }
      },
      attributeValueDoubleQuoted: function () {
        var char = this.consume();
        if (char === '"') {
          this.delegate.finishAttributeValue();
          this.transitionTo("afterAttributeValueQuoted" /* afterAttributeValueQuoted */);
        } else if (char === '&') {
          this.delegate.appendToAttributeValue(this.consumeCharRef() || '&');
        } else {
          this.delegate.appendToAttributeValue(char);
        }
      },
      attributeValueSingleQuoted: function () {
        var char = this.consume();
        if (char === "'") {
          this.delegate.finishAttributeValue();
          this.transitionTo("afterAttributeValueQuoted" /* afterAttributeValueQuoted */);
        } else if (char === '&') {
          this.delegate.appendToAttributeValue(this.consumeCharRef() || '&');
        } else {
          this.delegate.appendToAttributeValue(char);
        }
      },
      attributeValueUnquoted: function () {
        var char = this.peek();
        if (isSpace(char)) {
          this.delegate.finishAttributeValue();
          this.consume();
          this.transitionTo("beforeAttributeName" /* beforeAttributeName */);
        } else if (char === '/') {
          this.delegate.finishAttributeValue();
          this.consume();
          this.transitionTo("selfClosingStartTag" /* selfClosingStartTag */);
        } else if (char === '&') {
          this.consume();
          this.delegate.appendToAttributeValue(this.consumeCharRef() || '&');
        } else if (char === '>') {
          this.delegate.finishAttributeValue();
          this.consume();
          this.delegate.finishTag();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          this.consume();
          this.delegate.appendToAttributeValue(char);
        }
      },
      afterAttributeValueQuoted: function () {
        var char = this.peek();
        if (isSpace(char)) {
          this.consume();
          this.transitionTo("beforeAttributeName" /* beforeAttributeName */);
        } else if (char === '/') {
          this.consume();
          this.transitionTo("selfClosingStartTag" /* selfClosingStartTag */);
        } else if (char === '>') {
          this.consume();
          this.delegate.finishTag();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          this.transitionTo("beforeAttributeName" /* beforeAttributeName */);
        }
      },
      selfClosingStartTag: function () {
        var char = this.peek();
        if (char === '>') {
          this.consume();
          this.delegate.markTagAsSelfClosing();
          this.delegate.finishTag();
          this.transitionTo("beforeData" /* beforeData */);
        } else {
          this.transitionTo("beforeAttributeName" /* beforeAttributeName */);
        }
      },
      endTagOpen: function () {
        var char = this.consume();
        if (char === '@' || char === ':' || isAlpha(char)) {
          this.transitionTo("endTagName" /* endTagName */);
          this.tagNameBuffer = '';
          this.delegate.beginEndTag();
          this.appendToTagName(char);
        }
      }
    };
    this.reset();
  }
  EventedTokenizer.prototype.reset = function () {
    this.transitionTo("beforeData" /* beforeData */);
    this.input = '';
    this.tagNameBuffer = '';
    this.index = 0;
    this.line = 1;
    this.column = 0;
    this.delegate.reset();
  };
  EventedTokenizer.prototype.transitionTo = function (state) {
    this.state = state;
  };
  EventedTokenizer.prototype.tokenize = function (input) {
    this.reset();
    this.tokenizePart(input);
    this.tokenizeEOF();
  };
  EventedTokenizer.prototype.tokenizePart = function (input) {
    this.input += preprocessInput(input);
    while (this.index < this.input.length) {
      var handler = this.states[this.state];
      if (handler !== undefined) {
        handler.call(this);
      } else {
        throw new Error("unhandled state " + this.state);
      }
    }
  };
  EventedTokenizer.prototype.tokenizeEOF = function () {
    this.flushData();
  };
  EventedTokenizer.prototype.flushData = function () {
    if (this.state === 'data') {
      this.delegate.finishData();
      this.transitionTo("beforeData" /* beforeData */);
    }
  };
  EventedTokenizer.prototype.peek = function () {
    return this.input.charAt(this.index);
  };
  EventedTokenizer.prototype.consume = function () {
    var char = this.peek();
    this.index++;
    if (char === '\n') {
      this.line++;
      this.column = 0;
    } else {
      this.column++;
    }
    return char;
  };
  EventedTokenizer.prototype.consumeCharRef = function () {
    var endIndex = this.input.indexOf(';', this.index);
    if (endIndex === -1) {
      return;
    }
    var entity = this.input.slice(this.index, endIndex);
    var chars = this.entityParser.parse(entity);
    if (chars) {
      var count = entity.length;
      // consume the entity chars
      while (count) {
        this.consume();
        count--;
      }
      // consume the `;`
      this.consume();
      return chars;
    }
  };
  EventedTokenizer.prototype.markTagStart = function () {
    this.delegate.tagOpen();
  };
  EventedTokenizer.prototype.appendToTagName = function (char) {
    this.tagNameBuffer += char;
    this.delegate.appendToTagName(char);
  };
  EventedTokenizer.prototype.isIgnoredEndTag = function () {
    var tag = this.tagNameBuffer;
    return tag === 'title' && this.input.substring(this.index, this.index + 8) !== '</title>' || tag === 'style' && this.input.substring(this.index, this.index + 8) !== '</style>' || tag === 'script' && this.input.substring(this.index, this.index + 9) !== '</script>';
  };
  return EventedTokenizer;
}();
var Tokenizer = /** @class */function () {
  function Tokenizer(entityParser, options) {
    if (options === void 0) {
      options = {};
    }
    this.options = options;
    this.token = null;
    this.startLine = 1;
    this.startColumn = 0;
    this.tokens = [];
    this.tokenizer = new EventedTokenizer(this, entityParser, options.mode);
    this._currentAttribute = undefined;
  }
  Tokenizer.prototype.tokenize = function (input) {
    this.tokens = [];
    this.tokenizer.tokenize(input);
    return this.tokens;
  };
  Tokenizer.prototype.tokenizePart = function (input) {
    this.tokens = [];
    this.tokenizer.tokenizePart(input);
    return this.tokens;
  };
  Tokenizer.prototype.tokenizeEOF = function () {
    this.tokens = [];
    this.tokenizer.tokenizeEOF();
    return this.tokens[0];
  };
  Tokenizer.prototype.reset = function () {
    this.token = null;
    this.startLine = 1;
    this.startColumn = 0;
  };
  Tokenizer.prototype.current = function () {
    var token = this.token;
    if (token === null) {
      throw new Error('token was unexpectedly null');
    }
    if (arguments.length === 0) {
      return token;
    }
    for (var i = 0; i < arguments.length; i++) {
      if (token.type === arguments[i]) {
        return token;
      }
    }
    throw new Error("token type was unexpectedly " + token.type);
  };
  Tokenizer.prototype.push = function (token) {
    this.token = token;
    this.tokens.push(token);
  };
  Tokenizer.prototype.currentAttribute = function () {
    return this._currentAttribute;
  };
  Tokenizer.prototype.addLocInfo = function () {
    if (this.options.loc) {
      this.current().loc = {
        start: {
          line: this.startLine,
          column: this.startColumn
        },
        end: {
          line: this.tokenizer.line,
          column: this.tokenizer.column
        }
      };
    }
    this.startLine = this.tokenizer.line;
    this.startColumn = this.tokenizer.column;
  };
  // Data
  Tokenizer.prototype.beginDoctype = function () {
    this.push({
      type: "Doctype" /* Doctype */,
      name: ''
    });
  };
  Tokenizer.prototype.appendToDoctypeName = function (char) {
    this.current("Doctype" /* Doctype */).name += char;
  };
  Tokenizer.prototype.appendToDoctypePublicIdentifier = function (char) {
    var doctype = this.current("Doctype" /* Doctype */);
    if (doctype.publicIdentifier === undefined) {
      doctype.publicIdentifier = char;
    } else {
      doctype.publicIdentifier += char;
    }
  };
  Tokenizer.prototype.appendToDoctypeSystemIdentifier = function (char) {
    var doctype = this.current("Doctype" /* Doctype */);
    if (doctype.systemIdentifier === undefined) {
      doctype.systemIdentifier = char;
    } else {
      doctype.systemIdentifier += char;
    }
  };
  Tokenizer.prototype.endDoctype = function () {
    this.addLocInfo();
  };
  Tokenizer.prototype.beginData = function () {
    this.push({
      type: "Chars" /* Chars */,
      chars: ''
    });
  };
  Tokenizer.prototype.appendToData = function (char) {
    this.current("Chars" /* Chars */).chars += char;
  };
  Tokenizer.prototype.finishData = function () {
    this.addLocInfo();
  };
  // Comment
  Tokenizer.prototype.beginComment = function () {
    this.push({
      type: "Comment" /* Comment */,
      chars: ''
    });
  };
  Tokenizer.prototype.appendToCommentData = function (char) {
    this.current("Comment" /* Comment */).chars += char;
  };
  Tokenizer.prototype.finishComment = function () {
    this.addLocInfo();
  };
  // Tags - basic
  Tokenizer.prototype.tagOpen = function () {};
  Tokenizer.prototype.beginStartTag = function () {
    this.push({
      type: "StartTag" /* StartTag */,
      tagName: '',
      attributes: [],
      selfClosing: false
    });
  };
  Tokenizer.prototype.beginEndTag = function () {
    this.push({
      type: "EndTag" /* EndTag */,
      tagName: ''
    });
  };
  Tokenizer.prototype.finishTag = function () {
    this.addLocInfo();
  };
  Tokenizer.prototype.markTagAsSelfClosing = function () {
    this.current("StartTag" /* StartTag */).selfClosing = true;
  };
  // Tags - name
  Tokenizer.prototype.appendToTagName = function (char) {
    this.current("StartTag" /* StartTag */, "EndTag" /* EndTag */).tagName += char;
  };
  // Tags - attributes
  Tokenizer.prototype.beginAttribute = function () {
    this._currentAttribute = ['', '', false];
  };
  Tokenizer.prototype.appendToAttributeName = function (char) {
    this.currentAttribute()[0] += char;
  };
  Tokenizer.prototype.beginAttributeValue = function (isQuoted) {
    this.currentAttribute()[2] = isQuoted;
  };
  Tokenizer.prototype.appendToAttributeValue = function (char) {
    this.currentAttribute()[1] += char;
  };
  Tokenizer.prototype.finishAttributeValue = function () {
    this.current("StartTag" /* StartTag */).attributes.push(this._currentAttribute);
  };
  Tokenizer.prototype.reportSyntaxError = function (message) {
    this.current().syntaxError = message;
  };
  return Tokenizer;
}();
function tokenize(input, options) {
  var tokenizer = new Tokenizer(new EntityParser(HTML5NamedCharRefs), options);
  return tokenizer.tokenize(input);
}

const LinkifyResult = 'LinkifyResult';
const StartTag = 'StartTag';
const EndTag = 'EndTag';
const Chars = 'Chars';
const Comment = 'Comment';
const Doctype = 'Doctype';

/**
 * @param {string} str html string to link
 * @param {import('linkifyjs').Opts} [opts] linkify options
 * @returns {string} resulting string
 */
function linkifyHtml(str, opts = {}) {
  // `tokens` and `token` in this section refer to tokens generated by the
  // HTML parser, not linkify's parser
  const tokens = tokenize(str);
  const linkifiedTokens = [];
  const linkified = [];
  const options = new Options(opts, defaultRender);

  // Linkify the tokens given by the parser
  for (let i = 0; i < tokens.length; i++) {
    const token = tokens[i];
    if (token.type === StartTag) {
      linkifiedTokens.push(token);

      // Ignore all the contents of ignored tags
      const tagName = token.tagName.toUpperCase();
      const isIgnored = tagName === 'A' || options.ignoreTags.indexOf(tagName) >= 0;
      if (!isIgnored) {
        continue;
      }
      let preskipLen = linkifiedTokens.length;
      skipTagTokens(tagName, tokens, ++i, linkifiedTokens);
      i += linkifiedTokens.length - preskipLen - 1;
    } else if (token.type !== Chars) {
      // Skip this token, it's not important
      linkifiedTokens.push(token);
    } else {
      // Valid text token, linkify it!
      const linkifedChars = linkifyChars(token.chars, options);
      linkifiedTokens.push.apply(linkifiedTokens, linkifedChars);
    }
  }

  // Convert the tokens back into a string
  for (let i = 0; i < linkifiedTokens.length; i++) {
    const token = linkifiedTokens[i];
    switch (token.type) {
      case LinkifyResult:
        linkified.push(token.rendered);
        break;
      case StartTag:
        {
          let link = '<' + token.tagName;
          if (token.attributes.length > 0) {
            link += ' ' + attributeArrayToStrings(token.attributes).join(' ');
          }
          if (token.selfClosing) {
            link += ' /';
          }
          link += '>';
          linkified.push(link);
          break;
        }
      case EndTag:
        linkified.push(`</${token.tagName}>`);
        break;
      case Chars:
        linkified.push(escapeText(token.chars));
        break;
      case Comment:
        linkified.push(`<!--${escapeText(token.chars)}-->`);
        break;
      case Doctype:
        {
          let doctype = `<!DOCTYPE ${token.name}`;
          if (token.publicIdentifier) {
            doctype += ` PUBLIC "${token.publicIdentifier}"`;
          }
          if (token.systemIdentifier) {
            doctype += ` "${token.systemIdentifier}"`;
          }
          doctype += '>';
          linkified.push(doctype);
          break;
        }
    }
  }
  return linkified.join('');
}

/**
	`tokens` and `token` in this section referes to tokens returned by
	`linkify.tokenize`. `linkified` will contain HTML Parser-style tokens
	@param {string}
	@param {import('linkifyjs').Options}
*/
function linkifyChars(str, options) {
  const tokens = tokenize$1(str);
  const result = [];
  for (let i = 0; i < tokens.length; i++) {
    const token = tokens[i];
    if (token.t === 'nl' && options.get('nl2br')) {
      result.push({
        type: StartTag,
        tagName: 'br',
        attributes: [],
        selfClosing: true
      });
    } else if (!token.isLink || !options.check(token)) {
      result.push({
        type: Chars,
        chars: token.toString()
      });
    } else {
      result.push({
        type: LinkifyResult,
        rendered: options.render(token)
      });
    }
  }
  return result;
}

/**
	Returns a list of tokens skipped until the closing tag of tagName.

	* `tagName` is the closing tag which will prompt us to stop skipping
	* `tokens` is the array of tokens generated by HTML5Tokenizer which
	* `i` is the index immediately after the opening tag to skip
	* `skippedTokens` is an array which skipped tokens are being pushed into

	Caveats

	* Assumes that i is the first token after the given opening tagName
	* The closing tag will be skipped, but nothing after it
	* Will track whether there is a nested tag of the same type
*/
function skipTagTokens(tagName, tokens, i, skippedTokens) {
  // number of tokens of this type on the [fictional] stack
  let stackCount = 1;
  while (i < tokens.length && stackCount > 0) {
    let token = tokens[i];
    if (token.type === StartTag && token.tagName.toUpperCase() === tagName) {
      // Nested tag of the same type, "add to stack"
      stackCount++;
    } else if (token.type === EndTag && token.tagName.toUpperCase() === tagName) {
      // Closing tag
      stackCount--;
    }
    skippedTokens.push(token);
    i++;
  }

  // Note that if stackCount > 0 here, the HTML is probably invalid
  return skippedTokens;
}
function defaultRender({
  tagName,
  attributes,
  content
}) {
  return `<${tagName} ${attributesToString(attributes)}>${escapeText(content)}</${tagName}>`;
}
function escapeText(text) {
  return text.replace(/</g, '&lt;').replace(/>/g, '&gt;');
}
function escapeAttr(attr) {
  return attr.replace(/"/g, '&quot;');
}
function attributesToString(attributes) {
  const result = [];
  for (const attr in attributes) {
    const val = attributes[attr] + '';
    result.push(`${attr}="${escapeAttr(val)}"`);
  }
  return result.join(' ');
}
function attributeArrayToStrings(attrs) {
  const attrStrs = [];
  for (let i = 0; i < attrs.length; i++) {
    const name = attrs[i][0];
    const value = attrs[i][1] + '';
    attrStrs.push(`${name}="${escapeAttr(value)}"`);
  }
  return attrStrs;
}

export { linkifyHtml as default };