6 files changed, 0 insertions, 984 deletions
diff --git a/node_modules/xss/lib/cli.js b/node_modules/xss/lib/cli.js
deleted file mode 100644
index 4aa075e..0000000
--- a/node_modules/xss/lib/cli.js
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * command line tool
- *
- * @author Zongmin Lei<leizongmin@gmail.com>
- */
-
-var xss = require("./");
-var readline = require("readline");
-
-var rl = readline.createInterface({
-  input: process.stdin,
-  output: process.stdout
-});
-
-console.log('Enter a blank line to do xss(), enter "@quit" to exit.\n');
-
-function take(c, n) {
-  var ret = "";
-  for (var i = 0; i < n; i++) {
-    ret += c;
-  }
-  return ret;
-}
-
-function setPrompt(line) {
-  line = line.toString();
-  rl.setPrompt("[" + line + "]" + take(" ", 5 - line.length));
-  rl.prompt();
-}
-
-setPrompt(1);
-
-var html = [];
-rl.on("line", function(line) {
-  if (line === "@quit") return process.exit();
-  if (line === "") {
-    console.log("");
-    console.log(xss(html.join("\r\n")));
-    console.log("");
-    html = [];
-  } else {
-    html.push(line);
-  }
-  setPrompt(html.length + 1);
-});
diff --git a/node_modules/xss/lib/default.js b/node_modules/xss/lib/default.js
deleted file mode 100644
index 1452ed3..0000000
--- a/node_modules/xss/lib/default.js
+++ /dev/null
@@ -1,415 +0,0 @@
-/**
- * default settings
- *
- * @author Zongmin Lei<leizongmin@gmail.com>
- */
-
-var FilterCSS = require("cssfilter").FilterCSS;
-var getDefaultCSSWhiteList = require("cssfilter").getDefaultWhiteList;
-var _ = require("./util");
-
-function getDefaultWhiteList() {
-  return {
-    a: ["target", "href", "title"],
-    abbr: ["title"],
-    address: [],
-    area: ["shape", "coords", "href", "alt"],
-    article: [],
-    aside: [],
-    audio: ["autoplay", "controls", "loop", "preload", "src"],
-    b: [],
-    bdi: ["dir"],
-    bdo: ["dir"],
-    big: [],
-    blockquote: ["cite"],
-    br: [],
-    caption: [],
-    center: [],
-    cite: [],
-    code: [],
-    col: ["align", "valign", "span", "width"],
-    colgroup: ["align", "valign", "span", "width"],
-    dd: [],
-    del: ["datetime"],
-    details: ["open"],
-    div: [],
-    dl: [],
-    dt: [],
-    em: [],
-    font: ["color", "size", "face"],
-    footer: [],
-    h1: [],
-    h2: [],
-    h3: [],
-    h4: [],
-    h5: [],
-    h6: [],
-    header: [],
-    hr: [],
-    i: [],
-    img: ["src", "alt", "title", "width", "height"],
-    ins: ["datetime"],
-    li: [],
-    mark: [],
-    nav: [],
-    ol: [],
-    p: [],
-    pre: [],
-    s: [],
-    section: [],
-    small: [],
-    span: [],
-    sub: [],
-    sup: [],
-    strong: [],
-    table: ["width", "border", "align", "valign"],
-    tbody: ["align", "valign"],
-    td: ["width", "rowspan", "colspan", "align", "valign"],
-    tfoot: ["align", "valign"],
-    th: ["width", "rowspan", "colspan", "align", "valign"],
-    thead: ["align", "valign"],
-    tr: ["rowspan", "align", "valign"],
-    tt: [],
-    u: [],
-    ul: [],
-    video: ["autoplay", "controls", "loop", "preload", "src", "height", "width"]
-  };
-}
-
-var defaultCSSFilter = new FilterCSS();
-
-/**
- * default onTag function
- *
- * @param {String} tag
- * @param {String} html
- * @param {Object} options
- * @return {String}
- */
-function onTag(tag, html, options) {
-  // do nothing
-}
-
-/**
- * default onIgnoreTag function
- *
- * @param {String} tag
- * @param {String} html
- * @param {Object} options
- * @return {String}
- */
-function onIgnoreTag(tag, html, options) {
-  // do nothing
-}
-
-/**
- * default onTagAttr function
- *
- * @param {String} tag
- * @param {String} name
- * @param {String} value
- * @return {String}
- */
-function onTagAttr(tag, name, value) {
-  // do nothing
-}
-
-/**
- * default onIgnoreTagAttr function
- *
- * @param {String} tag
- * @param {String} name
- * @param {String} value
- * @return {String}
- */
-function onIgnoreTagAttr(tag, name, value) {
-  // do nothing
-}
-
-/**
- * default escapeHtml function
- *
- * @param {String} html
- */
-function escapeHtml(html) {
-  return html.replace(REGEXP_LT, "&lt;").replace(REGEXP_GT, "&gt;");
-}
-
-/**
- * default safeAttrValue function
- *
- * @param {String} tag
- * @param {String} name
- * @param {String} value
- * @param {Object} cssFilter
- * @return {String}
- */
-function safeAttrValue(tag, name, value, cssFilter) {
-  // unescape attribute value firstly
-  value = friendlyAttrValue(value);
-
-  if (name === "href" || name === "src") {
-    // filter `href` and `src` attribute
-    // only allow the value that starts with `http://` | `https://` | `mailto:` | `/` | `#`
-    value = _.trim(value);
-    if (value === "#") return "#";
-    if (
-      !(
-        value.substr(0, 7) === "http://" ||
-        value.substr(0, 8) === "https://" ||
-        value.substr(0, 7) === "mailto:" ||
-        value.substr(0, 4) === "tel:" ||
-        value[0] === "#" ||
-        value[0] === "/"
-      )
-    ) {
-      return "";
-    }
-  } else if (name === "background") {
-    // filter `background` attribute (maybe no use)
-    // `javascript:`
-    REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
-    if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
-      return "";
-    }
-  } else if (name === "style") {
-    // `expression()`
-    REGEXP_DEFAULT_ON_TAG_ATTR_7.lastIndex = 0;
-    if (REGEXP_DEFAULT_ON_TAG_ATTR_7.test(value)) {
-      return "";
-    }
-    // `url()`
-    REGEXP_DEFAULT_ON_TAG_ATTR_8.lastIndex = 0;
-    if (REGEXP_DEFAULT_ON_TAG_ATTR_8.test(value)) {
-      REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
-      if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
-        return "";
-      }
-    }
-    if (cssFilter !== false) {
-      cssFilter = cssFilter || defaultCSSFilter;
-      value = cssFilter.process(value);
-    }
-  }
-
-  // escape `<>"` before returns
-  value = escapeAttrValue(value);
-  return value;
-}
-
-// RegExp list
-var REGEXP_LT = /</g;
-var REGEXP_GT = />/g;
-var REGEXP_QUOTE = /"/g;
-var REGEXP_QUOTE_2 = /&quot;/g;
-var REGEXP_ATTR_VALUE_1 = /&#([a-zA-Z0-9]*);?/gim;
-var REGEXP_ATTR_VALUE_COLON = /&colon;?/gim;
-var REGEXP_ATTR_VALUE_NEWLINE = /&newline;?/gim;
-var REGEXP_DEFAULT_ON_TAG_ATTR_3 = /\/\*|\*\//gm;
-var REGEXP_DEFAULT_ON_TAG_ATTR_4 = /((j\s*a\s*v\s*a|v\s*b|l\s*i\s*v\s*e)\s*s\s*c\s*r\s*i\s*p\s*t\s*|m\s*o\s*c\s*h\s*a)\:/gi;
-var REGEXP_DEFAULT_ON_TAG_ATTR_5 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:/gi;
-var REGEXP_DEFAULT_ON_TAG_ATTR_6 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:\s*image\//gi;
-var REGEXP_DEFAULT_ON_TAG_ATTR_7 = /e\s*x\s*p\s*r\s*e\s*s\s*s\s*i\s*o\s*n\s*\(.*/gi;
-var REGEXP_DEFAULT_ON_TAG_ATTR_8 = /u\s*r\s*l\s*\(.*/gi;
-
-/**
- * escape doube quote
- *
- * @param {String} str
- * @return {String} str
- */
-function escapeQuote(str) {
-  return str.replace(REGEXP_QUOTE, "&quot;");
-}
-
-/**
- * unescape double quote
- *
- * @param {String} str
- * @return {String} str
- */
-function unescapeQuote(str) {
-  return str.replace(REGEXP_QUOTE_2, '"');
-}
-
-/**
- * escape html entities
- *
- * @param {String} str
- * @return {String}
- */
-function escapeHtmlEntities(str) {
-  return str.replace(REGEXP_ATTR_VALUE_1, function replaceUnicode(str, code) {
-    return code[0] === "x" || code[0] === "X"
-      ? String.fromCharCode(parseInt(code.substr(1), 16))
-      : String.fromCharCode(parseInt(code, 10));
-  });
-}
-
-/**
- * escape html5 new danger entities
- *
- * @param {String} str
- * @return {String}
- */
-function escapeDangerHtml5Entities(str) {
-  return str
-    .replace(REGEXP_ATTR_VALUE_COLON, ":")
-    .replace(REGEXP_ATTR_VALUE_NEWLINE, " ");
-}
-
-/**
- * clear nonprintable characters
- *
- * @param {String} str
- * @return {String}
- */
-function clearNonPrintableCharacter(str) {
-  var str2 = "";
-  for (var i = 0, len = str.length; i < len; i++) {
-    str2 += str.charCodeAt(i) < 32 ? " " : str.charAt(i);
-  }
-  return _.trim(str2);
-}
-
-/**
- * get friendly attribute value
- *
- * @param {String} str
- * @return {String}
- */
-function friendlyAttrValue(str) {
-  str = unescapeQuote(str);
-  str = escapeHtmlEntities(str);
-  str = escapeDangerHtml5Entities(str);
-  str = clearNonPrintableCharacter(str);
-  return str;
-}
-
-/**
- * unescape attribute value
- *
- * @param {String} str
- * @return {String}
- */
-function escapeAttrValue(str) {
-  str = escapeQuote(str);
-  str = escapeHtml(str);
-  return str;
-}
-
-/**
- * `onIgnoreTag` function for removing all the tags that are not in whitelist
- */
-function onIgnoreTagStripAll() {
-  return "";
-}
-
-/**
- * remove tag body
- * specify a `tags` list, if the tag is not in the `tags` list then process by the specify function (optional)
- *
- * @param {array} tags
- * @param {function} next
- */
-function StripTagBody(tags, next) {
-  if (typeof next !== "function") {
-    next = function() {};
-  }
-
-  var isRemoveAllTag = !Array.isArray(tags);
-  function isRemoveTag(tag) {
-    if (isRemoveAllTag) return true;
-    return _.indexOf(tags, tag) !== -1;
-  }
-
-  var removeList = [];
-  var posStart = false;
-
-  return {
-    onIgnoreTag: function(tag, html, options) {
-      if (isRemoveTag(tag)) {
-        if (options.isClosing) {
-          var ret = "[/removed]";
-          var end = options.position + ret.length;
-          removeList.push([
-            posStart !== false ? posStart : options.position,
-            end
-          ]);
-          posStart = false;
-          return ret;
-        } else {
-          if (!posStart) {
-            posStart = options.position;
-          }
-          return "[removed]";
-        }
-      } else {
-        return next(tag, html, options);
-      }
-    },
-    remove: function(html) {
-      var rethtml = "";
-      var lastPos = 0;
-      _.forEach(removeList, function(pos) {
-        rethtml += html.slice(lastPos, pos[0]);
-        lastPos = pos[1];
-      });
-      rethtml += html.slice(lastPos);
-      return rethtml;
-    }
-  };
-}
-
-/**
- * remove html comments
- *
- * @param {String} html
- * @return {String}
- */
-function stripCommentTag(html) {
-  return html.replace(STRIP_COMMENT_TAG_REGEXP, "");
-}
-var STRIP_COMMENT_TAG_REGEXP = /<!--[\s\S]*?-->/g;
-
-/**
- * remove invisible characters
- *
- * @param {String} html
- * @return {String}
- */
-function stripBlankChar(html) {
-  var chars = html.split("");
-  chars = chars.filter(function(char) {
-    var c = char.charCodeAt(0);
-    if (c === 127) return false;
-    if (c <= 31) {
-      if (c === 10 || c === 13) return true;
-      return false;
-    }
-    return true;
-  });
-  return chars.join("");
-}
-
-exports.whiteList = getDefaultWhiteList();
-exports.getDefaultWhiteList = getDefaultWhiteList;
-exports.onTag = onTag;
-exports.onIgnoreTag = onIgnoreTag;
-exports.onTagAttr = onTagAttr;
-exports.onIgnoreTagAttr = onIgnoreTagAttr;
-exports.safeAttrValue = safeAttrValue;
-exports.escapeHtml = escapeHtml;
-exports.escapeQuote = escapeQuote;
-exports.unescapeQuote = unescapeQuote;
-exports.escapeHtmlEntities = escapeHtmlEntities;
-exports.escapeDangerHtml5Entities = escapeDangerHtml5Entities;
-exports.clearNonPrintableCharacter = clearNonPrintableCharacter;
-exports.friendlyAttrValue = friendlyAttrValue;
-exports.escapeAttrValue = escapeAttrValue;
-exports.onIgnoreTagStripAll = onIgnoreTagStripAll;
-exports.StripTagBody = StripTagBody;
-exports.stripCommentTag = stripCommentTag;
-exports.stripBlankChar = stripBlankChar;
-exports.cssFilter = defaultCSSFilter;
-exports.getDefaultCSSWhiteList = getDefaultCSSWhiteList;
diff --git a/node_modules/xss/lib/index.js b/node_modules/xss/lib/index.js
deleted file mode 100644
index e0c1a06..0000000
--- a/node_modules/xss/lib/index.js
+++ /dev/null
@@ -1,40 +0,0 @@
-/**
- * xss
- *
- * @author Zongmin Lei<leizongmin@gmail.com>
- */
-
-var DEFAULT = require("./default");
-var parser = require("./parser");
-var FilterXSS = require("./xss");
-
-/**
- * filter xss function
- *
- * @param {String} html
- * @param {Object} options { whiteList, onTag, onTagAttr, onIgnoreTag, onIgnoreTagAttr, safeAttrValue, escapeHtml }
- * @return {String}
- */
-function filterXSS(html, options) {
-  var xss = new FilterXSS(options);
-  return xss.process(html);
-}
-
-exports = module.exports = filterXSS;
-exports.filterXSS = filterXSS;
-exports.FilterXSS = FilterXSS;
-for (var i in DEFAULT) exports[i] = DEFAULT[i];
-for (var i in parser) exports[i] = parser[i];
-
-// using `xss` on the browser, output `filterXSS` to the globals
-if (typeof window !== "undefined") {
-  window.filterXSS = module.exports;
-}
-
-// using `xss` on the WebWorker, output `filterXSS` to the globals
-function isWorkerEnv() {
-  return typeof self !== 'undefined' && typeof DedicatedWorkerGlobalScope !== 'undefined' && self instanceof DedicatedWorkerGlobalScope;
-}
-if (isWorkerEnv()) {
-  self.filterXSS = module.exports;
-}
diff --git a/node_modules/xss/lib/parser.js b/node_modules/xss/lib/parser.js
deleted file mode 100644
index 7c15def..0000000
--- a/node_modules/xss/lib/parser.js
+++ /dev/null
@@ -1,239 +0,0 @@
-/**
- * Simple HTML Parser
- *
- * @author Zongmin Lei<leizongmin@gmail.com>
- */
-
-var _ = require("./util");
-
-/**
- * get tag name
- *
- * @param {String} html e.g. '<a hef="#">'
- * @return {String}
- */
-function getTagName(html) {
-  var i = _.spaceIndex(html);
-  if (i === -1) {
-    var tagName = html.slice(1, -1);
-  } else {
-    var tagName = html.slice(1, i + 1);
-  }
-  tagName = _.trim(tagName).toLowerCase();
-  if (tagName.slice(0, 1) === "/") tagName = tagName.slice(1);
-  if (tagName.slice(-1) === "/") tagName = tagName.slice(0, -1);
-  return tagName;
-}
-
-/**
- * is close tag?
- *
- * @param {String} html 如：'<a hef="#">'
- * @return {Boolean}
- */
-function isClosing(html) {
-  return html.slice(0, 2) === "</";
-}
-
-/**
- * parse input html and returns processed html
- *
- * @param {String} html
- * @param {Function} onTag e.g. function (sourcePosition, position, tag, html, isClosing)
- * @param {Function} escapeHtml
- * @return {String}
- */
-function parseTag(html, onTag, escapeHtml) {
-  "user strict";
-
-  var rethtml = "";
-  var lastPos = 0;
-  var tagStart = false;
-  var quoteStart = false;
-  var currentPos = 0;
-  var len = html.length;
-  var currentTagName = "";
-  var currentHtml = "";
-
-  for (currentPos = 0; currentPos < len; currentPos++) {
-    var c = html.charAt(currentPos);
-    if (tagStart === false) {
-      if (c === "<") {
-        tagStart = currentPos;
-        continue;
-      }
-    } else {
-      if (quoteStart === false) {
-        if (c === "<") {
-          rethtml += escapeHtml(html.slice(lastPos, currentPos));
-          tagStart = currentPos;
-          lastPos = currentPos;
-          continue;
-        }
-        if (c === ">") {
-          rethtml += escapeHtml(html.slice(lastPos, tagStart));
-          currentHtml = html.slice(tagStart, currentPos + 1);
-          currentTagName = getTagName(currentHtml);
-          rethtml += onTag(
-            tagStart,
-            rethtml.length,
-            currentTagName,
-            currentHtml,
-            isClosing(currentHtml)
-          );
-          lastPos = currentPos + 1;
-          tagStart = false;
-          continue;
-        }
-        if ((c === '"' || c === "'") && html.charAt(currentPos - 1) === "=") {
-          quoteStart = c;
-          continue;
-        }
-      } else {
-        if (c === quoteStart) {
-          quoteStart = false;
-          continue;
-        }
-      }
-    }
-  }
-  if (lastPos < html.length) {
-    rethtml += escapeHtml(html.substr(lastPos));
-  }
-
-  return rethtml;
-}
-
-var REGEXP_ILLEGAL_ATTR_NAME = /[^a-zA-Z0-9_:\.\-]/gim;
-
-/**
- * parse input attributes and returns processed attributes
- *
- * @param {String} html e.g. `href="#" target="_blank"`
- * @param {Function} onAttr e.g. `function (name, value)`
- * @return {String}
- */
-function parseAttr(html, onAttr) {
-  "user strict";
-
-  var lastPos = 0;
-  var retAttrs = [];
-  var tmpName = false;
-  var len = html.length;
-
-  function addAttr(name, value) {
-    name = _.trim(name);
-    name = name.replace(REGEXP_ILLEGAL_ATTR_NAME, "").toLowerCase();
-    if (name.length < 1) return;
-    var ret = onAttr(name, value || "");
-    if (ret) retAttrs.push(ret);
-  }
-
-  // 逐个分析字符
-  for (var i = 0; i < len; i++) {
-    var c = html.charAt(i);
-    var v, j;
-    if (tmpName === false && c === "=") {
-      tmpName = html.slice(lastPos, i);
-      lastPos = i + 1;
-      continue;
-    }
-    if (tmpName !== false) {
-      if (
-        i === lastPos &&
-        (c === '"' || c === "'") &&
-        html.charAt(i - 1) === "="
-      ) {
-        j = html.indexOf(c, i + 1);
-        if (j === -1) {
-          break;
-        } else {
-          v = _.trim(html.slice(lastPos + 1, j));
-          addAttr(tmpName, v);
-          tmpName = false;
-          i = j;
-          lastPos = i + 1;
-          continue;
-        }
-      }
-    }
-    if (/\s|\n|\t/.test(c)) {
-      html = html.replace(/\s|\n|\t/g, " ");
-      if (tmpName === false) {
-        j = findNextEqual(html, i);
-        if (j === -1) {
-          v = _.trim(html.slice(lastPos, i));
-          addAttr(v);
-          tmpName = false;
-          lastPos = i + 1;
-          continue;
-        } else {
-          i = j - 1;
-          continue;
-        }
-      } else {
-        j = findBeforeEqual(html, i - 1);
-        if (j === -1) {
-          v = _.trim(html.slice(lastPos, i));
-          v = stripQuoteWrap(v);
-          addAttr(tmpName, v);
-          tmpName = false;
-          lastPos = i + 1;
-          continue;
-        } else {
-          continue;
-        }
-      }
-    }
-  }
-
-  if (lastPos < html.length) {
-    if (tmpName === false) {
-      addAttr(html.slice(lastPos));
-    } else {
-      addAttr(tmpName, stripQuoteWrap(_.trim(html.slice(lastPos))));
-    }
-  }
-
-  return _.trim(retAttrs.join(" "));
-}
-
-function findNextEqual(str, i) {
-  for (; i < str.length; i++) {
-    var c = str[i];
-    if (c === " ") continue;
-    if (c === "=") return i;
-    return -1;
-  }
-}
-
-function findBeforeEqual(str, i) {
-  for (; i > 0; i--) {
-    var c = str[i];
-    if (c === " ") continue;
-    if (c === "=") return i;
-    return -1;
-  }
-}
-
-function isQuoteWrapString(text) {
-  if (
-    (text[0] === '"' && text[text.length - 1] === '"') ||
-    (text[0] === "'" && text[text.length - 1] === "'")
-  ) {
-    return true;
-  } else {
-    return false;
-  }
-}
-
-function stripQuoteWrap(text) {
-  if (isQuoteWrapString(text)) {
-    return text.substr(1, text.length - 2);
-  } else {
-    return text;
-  }
-}
-
-exports.parseTag = parseTag;
-exports.parseAttr = parseAttr;
diff --git a/node_modules/xss/lib/util.js b/node_modules/xss/lib/util.js
deleted file mode 100644
index 1dcd7fa..0000000
--- a/node_modules/xss/lib/util.js
+++ /dev/null
@@ -1,34 +0,0 @@
-module.exports = {
-  indexOf: function(arr, item) {
-    var i, j;
-    if (Array.prototype.indexOf) {
-      return arr.indexOf(item);
-    }
-    for (i = 0, j = arr.length; i < j; i++) {
-      if (arr[i] === item) {
-        return i;
-      }
-    }
-    return -1;
-  },
-  forEach: function(arr, fn, scope) {
-    var i, j;
-    if (Array.prototype.forEach) {
-      return arr.forEach(fn, scope);
-    }
-    for (i = 0, j = arr.length; i < j; i++) {
-      fn.call(scope, arr[i], i, arr);
-    }
-  },
-  trim: function(str) {
-    if (String.prototype.trim) {
-      return str.trim();
-    }
-    return str.replace(/(^\s*)|(\s*$)/g, "");
-  },
-  spaceIndex: function(str) {
-    var reg = /\s|\n|\t/;
-    var match = reg.exec(str);
-    return match ? match.index : -1;
-  }
-};
diff --git a/node_modules/xss/lib/xss.js b/node_modules/xss/lib/xss.js
deleted file mode 100644
index 74d2e42..0000000
--- a/node_modules/xss/lib/xss.js
+++ /dev/null
@@ -1,211 +0,0 @@
-/**
- * filter xss
- *
- * @author Zongmin Lei<leizongmin@gmail.com>
- */
-
-var FilterCSS = require("cssfilter").FilterCSS;
-var DEFAULT = require("./default");
-var parser = require("./parser");
-var parseTag = parser.parseTag;
-var parseAttr = parser.parseAttr;
-var _ = require("./util");
-
-/**
- * returns `true` if the input value is `undefined` or `null`
- *
- * @param {Object} obj
- * @return {Boolean}
- */
-function isNull(obj) {
-  return obj === undefined || obj === null;
-}
-
-/**
- * get attributes for a tag
- *
- * @param {String} html
- * @return {Object}
- *   - {String} html
- *   - {Boolean} closing
- */
-function getAttrs(html) {
-  var i = _.spaceIndex(html);
-  if (i === -1) {
-    return {
-      html: "",
-      closing: html[html.length - 2] === "/"
-    };
-  }
-  html = _.trim(html.slice(i + 1, -1));
-  var isClosing = html[html.length - 1] === "/";
-  if (isClosing) html = _.trim(html.slice(0, -1));
-  return {
-    html: html,
-    closing: isClosing
-  };
-}
-
-/**
- * shallow copy
- *
- * @param {Object} obj
- * @return {Object}
- */
-function shallowCopyObject(obj) {
-  var ret = {};
-  for (var i in obj) {
-    ret[i] = obj[i];
-  }
-  return ret;
-}
-
-/**
- * FilterXSS class
- *
- * @param {Object} options
- *        whiteList, onTag, onTagAttr, onIgnoreTag,
- *        onIgnoreTagAttr, safeAttrValue, escapeHtml
- *        stripIgnoreTagBody, allowCommentTag, stripBlankChar
- *        css{whiteList, onAttr, onIgnoreAttr} `css=false` means don't use `cssfilter`
- */
-function FilterXSS(options) {
-  options = shallowCopyObject(options || {});
-
-  if (options.stripIgnoreTag) {
-    if (options.onIgnoreTag) {
-      console.error(
-        'Notes: cannot use these two options "stripIgnoreTag" and "onIgnoreTag" at the same time'
-      );
-    }
-    options.onIgnoreTag = DEFAULT.onIgnoreTagStripAll;
-  }
-
-  options.whiteList = options.whiteList || DEFAULT.whiteList;
-  options.onTag = options.onTag || DEFAULT.onTag;
-  options.onTagAttr = options.onTagAttr || DEFAULT.onTagAttr;
-  options.onIgnoreTag = options.onIgnoreTag || DEFAULT.onIgnoreTag;
-  options.onIgnoreTagAttr = options.onIgnoreTagAttr || DEFAULT.onIgnoreTagAttr;
-  options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
-  options.escapeHtml = options.escapeHtml || DEFAULT.escapeHtml;
-  this.options = options;
-
-  if (options.css === false) {
-    this.cssFilter = false;
-  } else {
-    options.css = options.css || {};
-    this.cssFilter = new FilterCSS(options.css);
-  }
-}
-
-/**
- * start process and returns result
- *
- * @param {String} html
- * @return {String}
- */
-FilterXSS.prototype.process = function(html) {
-  // compatible with the input
-  html = html || "";
-  html = html.toString();
-  if (!html) return "";
-
-  var me = this;
-  var options = me.options;
-  var whiteList = options.whiteList;
-  var onTag = options.onTag;
-  var onIgnoreTag = options.onIgnoreTag;
-  var onTagAttr = options.onTagAttr;
-  var onIgnoreTagAttr = options.onIgnoreTagAttr;
-  var safeAttrValue = options.safeAttrValue;
-  var escapeHtml = options.escapeHtml;
-  var cssFilter = me.cssFilter;
-
-  // remove invisible characters
-  if (options.stripBlankChar) {
-    html = DEFAULT.stripBlankChar(html);
-  }
-
-  // remove html comments
-  if (!options.allowCommentTag) {
-    html = DEFAULT.stripCommentTag(html);
-  }
-
-  // if enable stripIgnoreTagBody
-  var stripIgnoreTagBody = false;
-  if (options.stripIgnoreTagBody) {
-    var stripIgnoreTagBody = DEFAULT.StripTagBody(
-      options.stripIgnoreTagBody,
-      onIgnoreTag
-    );
-    onIgnoreTag = stripIgnoreTagBody.onIgnoreTag;
-  }
-
-  var retHtml = parseTag(
-    html,
-    function(sourcePosition, position, tag, html, isClosing) {
-      var info = {
-        sourcePosition: sourcePosition,
-        position: position,
-        isClosing: isClosing,
-        isWhite: whiteList.hasOwnProperty(tag)
-      };
-
-      // call `onTag()`
-      var ret = onTag(tag, html, info);
-      if (!isNull(ret)) return ret;
-
-      if (info.isWhite) {
-        if (info.isClosing) {
-          return "</" + tag + ">";
-        }
-
-        var attrs = getAttrs(html);
-        var whiteAttrList = whiteList[tag];
-        var attrsHtml = parseAttr(attrs.html, function(name, value) {
-          // call `onTagAttr()`
-          var isWhiteAttr = _.indexOf(whiteAttrList, name) !== -1;
-          var ret = onTagAttr(tag, name, value, isWhiteAttr);
-          if (!isNull(ret)) return ret;
-
-          if (isWhiteAttr) {
-            // call `safeAttrValue()`
-            value = safeAttrValue(tag, name, value, cssFilter);
-            if (value) {
-              return name + '="' + value + '"';
-            } else {
-              return name;
-            }
-          } else {
-            // call `onIgnoreTagAttr()`
-            var ret = onIgnoreTagAttr(tag, name, value, isWhiteAttr);
-            if (!isNull(ret)) return ret;
-            return;
-          }
-        });
-
-        // build new tag html
-        var html = "<" + tag;
-        if (attrsHtml) html += " " + attrsHtml;
-        if (attrs.closing) html += " /";
-        html += ">";
-        return html;
-      } else {
-        // call `onIgnoreTag()`
-        var ret = onIgnoreTag(tag, html, info);
-        if (!isNull(ret)) return ret;
-        return escapeHtml(html);
-      }
-    },
-    escapeHtml
-  );
-
-  // if enable stripIgnoreTagBody
-  if (stripIgnoreTagBody) {
-    retHtml = stripIgnoreTagBody.remove(retHtml);
-  }
-
-  return retHtml;
-};
-
-module.exports = FilterXSS;