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node_modules/xss/LICENSE

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+Copyright (c) 2012-2018 Zongmin Lei(雷宗民) <leizongmin@gmail.com>
+http://ucdok.com
+
+The MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

node_modules/xss/README.md

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+[![NPM version][npm-image]][npm-url]
+[![Node.js CI](https://github.com/leizongmin/js-xss/actions/workflows/nodejs.yml/badge.svg)](https://github.com/leizongmin/js-xss/actions/workflows/nodejs.yml)
+[![Test coverage][coveralls-image]][coveralls-url]
+[![David deps][david-image]][david-url]
+[![node version][node-image]][node-url]
+[![npm download][download-image]][download-url]
+[![npm license][license-image]][download-url]
+
+[npm-image]: https://img.shields.io/npm/v/xss.svg?style=flat-square
+[npm-url]: https://npmjs.org/package/xss
+[coveralls-image]: https://img.shields.io/coveralls/leizongmin/js-xss.svg?style=flat-square
+[coveralls-url]: https://coveralls.io/r/leizongmin/js-xss?branch=master
+[david-image]: https://img.shields.io/david/leizongmin/js-xss.svg?style=flat-square
+[david-url]: https://david-dm.org/leizongmin/js-xss
+[node-image]: https://img.shields.io/badge/node.js-%3E=_0.10-green.svg?style=flat-square
+[node-url]: http://nodejs.org/download/
+[download-image]: https://img.shields.io/npm/dm/xss.svg?style=flat-square
+[download-url]: https://npmjs.org/package/xss
+[license-image]: https://img.shields.io/npm/l/xss.svg
+
+# Sanitize untrusted HTML (to prevent XSS) with a configuration specified by a Whitelist.
+
+[![Greenkeeper badge](https://badges.greenkeeper.io/leizongmin/js-xss.svg)](https://greenkeeper.io/)
+
+![xss](https://nodei.co/npm/xss.png?downloads=true&stars=true)
+
+---
+
+`xss` is a module used to filter input from users to prevent XSS attacks.
+([What is XSS attack?](http://en.wikipedia.org/wiki/Cross-site_scripting))
+
+**Project Homepage:** http://jsxss.com
+
+**Try Online:** http://jsxss.com/en/try.html
+
+**[中文版文档](https://github.com/leizongmin/js-xss/blob/master/README.zh.md)**
+
+---
+
+## Features
+
+- Specifies HTML tags and their attributes allowed with whitelist
+- Handle any tags or attributes using custom function.
+
+## Reference
+
+- [XSS Filter Evasion Cheat Sheet](https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet)
+- [Data URI scheme](http://en.wikipedia.org/wiki/Data_URI_scheme)
+- [XSS with Data URI Scheme](http://hi.baidu.com/badzzzz/item/bdbafe83144619c199255f7b)
+
+## Benchmark (for references only)
+
+- the xss module: 22.53 MB/s
+- `xss()` function from module `validator@0.3.7`: 6.9 MB/s
+
+For test code please refer to `benchmark` directory.
+
+## They are using xss module
+
+- **nodeclub** - A Node.js bbs using MongoDB - https://github.com/cnodejs/nodeclub
+- **cnpmjs.org** - Private npm registry and web for Enterprise - https://github.com/cnpm/cnpmjs.org
+- **cocalc.com** - Collaborative Calculation and Data Science - https://cocalc.com
+
+## Install
+
+### NPM
+
+```bash
+npm install xss
+```
+
+### Bower
+
+```bash
+bower install xss
+```
+
+Or
+
+```bash
+bower install https://github.com/leizongmin/js-xss.git
+```
+
+## Usages
+
+### On Node.js
+
+```javascript
+var xss = require("xss");
+var html = xss('<script>alert("xss");</script>');
+console.log(html);
+```
+
+### On Browser
+
+Shim mode (reference file `test/test.html`):
+
+```html
+<script src="https://rawgit.com/leizongmin/js-xss/master/dist/xss.js"></script>
+<script>
+  // apply function filterXSS in the same way
+  var html = filterXSS('<script>alert("xss");</scr' + "ipt>");
+  alert(html);
+</script>
+```
+
+AMD mode - shim:
+
+```html
+<script>
+  require.config({
+    baseUrl: "./",
+    paths: {
+      xss: "https://rawgit.com/leizongmin/js-xss/master/dist/xss.js",
+    },
+    shim: {
+      xss: { exports: "filterXSS" },
+    },
+  });
+  require(["xss"], function (xss) {
+    var html = xss('<script>alert("xss");</scr' + "ipt>");
+    alert(html);
+  });
+</script>
+```
+
+**Notes: please don't use the URL https://rawgit.com/leizongmin/js-xss/master/dist/xss.js in production environment.**
+
+## Command Line Tool
+
+### Process File
+
+You can use the xss command line tool to process a file. Usage:
+
+```bash
+xss -i <input_file> -o <output_file>
+```
+
+Example:
+
+```bash
+xss -i origin.html -o target.html
+```
+
+### Active Test
+
+Run the following command, them you can type HTML
+code in the command-line, and check the filtered output:
+
+```bash
+xss -t
+```
+
+For more details, please run `$ xss -h` to see it.
+
+## Custom filter rules
+
+When using the `xss()` function, the second parameter could be used to specify
+custom rules:
+
+```javascript
+options = {}; // Custom rules
+html = xss('<script>alert("xss");</script>', options);
+```
+
+To avoid passing `options` every time, you can also do it in a faster way by
+creating a `FilterXSS` instance:
+
+```javascript
+options = {}; // Custom rules
+myxss = new xss.FilterXSS(options);
+// then apply myxss.process()
+html = myxss.process('<script>alert("xss");</script>');
+```
+
+Details of parameters in `options` would be described below.
+
+### Whitelist
+
+By specifying a `whiteList`, e.g. `{ 'tagName': [ 'attr-1', 'attr-2' ] }`. Tags
+and attributes not in the whitelist would be filter out. For example:
+
+```javascript
+// only tag a and its attributes href, title, target are allowed
+var options = {
+  whiteList: {
+    a: ["href", "title", "target"],
+  },
+};
+// With the configuration specified above, the following HTML:
+// <a href="#" onclick="hello()"><i>Hello</i></a>
+// would become:
+// <a href="#">&lt;i&gt;Hello&lt;/i&gt;</a>
+```
+
+For the default whitelist, please refer `xss.whiteList`.
+
+`allowList` is also supported, and has the same function as `whiteList`.
+
+### Customize the handler function for matched tags
+
+By specifying the handler function with `onTag`:
+
+```javascript
+function onTag(tag, html, options) {
+  // tag is the name of current tag, e.g. 'a' for tag <a>
+  // html is the HTML of this tag, e.g. '<a>' for tag <a>
+  // options is some addition informations:
+  //   isWhite    boolean, whether the tag is in whitelist
+  //   isClosing  boolean, whether the tag is a closing tag, e.g. true for </a>
+  //   position        integer, the position of the tag in output result
+  //   sourcePosition  integer, the position of the tag in input HTML source
+  // If a string is returned, the current tag would be replaced with the string
+  // If return nothing, the default measure would be taken:
+  //   If in whitelist: filter attributes using onTagAttr, as described below
+  //   If not in whitelist: handle by onIgnoreTag, as described below
+}
+```
+
+### Customize the handler function for attributes of matched tags
+
+By specifying the handler function with `onTagAttr`:
+
+```javascript
+function onTagAttr(tag, name, value, isWhiteAttr) {
+  // tag is the name of current tag, e.g. 'a' for tag <a>
+  // name is the name of current attribute, e.g. 'href' for href="#"
+  // isWhiteAttr whether the attribute is in whitelist
+  // If a string is returned, the attribute would be replaced with the string
+  // If return nothing, the default measure would be taken:
+  //   If in whitelist: filter the value using safeAttrValue as described below
+  //   If not in whitelist: handle by onIgnoreTagAttr, as described below
+}
+```
+
+### Customize the handler function for tags not in the whitelist
+
+By specifying the handler function with `onIgnoreTag`:
+
+```javascript
+function onIgnoreTag(tag, html, options) {
+  // Parameters are the same with onTag
+  // If a string is returned, the tag would be replaced with the string
+  // If return nothing, the default measure would be taken (specifies using
+  // escape, as described below)
+}
+```
+
+### Customize the handler function for attributes not in the whitelist
+
+By specifying the handler function with `onIgnoreTagAttr`:
+
+```javascript
+function onIgnoreTagAttr(tag, name, value, isWhiteAttr) {
+  // Parameters are the same with onTagAttr
+  // If a string is returned, the value would be replaced with this string
+  // If return nothing, then keep default (remove the attribute)
+}
+```
+
+### Customize escaping function for HTML
+
+By specifying the handler function with `escapeHtml`. Following is the default
+function **(Modification is not recommended)**:
+
+```javascript
+function escapeHtml(html) {
+  return html.replace(/</g, "&lt;").replace(/>/g, "&gt;");
+}
+```
+
+### Customize escaping function for value of attributes
+
+By specifying the handler function with `safeAttrValue`:
+
+```javascript
+function safeAttrValue(tag, name, value) {
+  // Parameters are the same with onTagAttr (without options)
+  // Return the value as a string
+}
+```
+
+### Customize output attribute value syntax for HTML
+
+By specifying a `singleQuotedAttributeValue`. Use `true` for `'`. Otherwise default `"` will be used
+
+```javascript
+var options = {
+  singleQuotedAttributeValue: true,
+};
+// With the configuration specified above, the following HTML:
+// <a href="#">Hello</a>
+// would become:
+// <a href='#'>Hello</a>
+```
+
+### Customize CSS filter
+
+If you allow the attribute `style`, the value will be processed by [cssfilter](https://github.com/leizongmin/js-css-filter) module. The cssfilter module includes a default css whitelist. You can specify the options for cssfilter module like this:
+
+```javascript
+myxss = new xss.FilterXSS({
+  css: {
+    whiteList: {
+      position: /^fixed|relative$/,
+      top: true,
+      left: true,
+    },
+  },
+});
+html = myxss.process('<script>alert("xss");</script>');
+```
+
+If you don't want to filter out the `style` content, just specify `false` to the `css` option:
+
+```javascript
+myxss = new xss.FilterXSS({
+  css: false,
+});
+```
+
+For more help, please see https://github.com/leizongmin/js-css-filter
+
+### Quick Start
+
+#### Filter out tags not in the whitelist
+
+By using `stripIgnoreTag` parameter:
+
+- `true` filter out tags not in the whitelist
+- `false`: by default: escape the tag using configured `escape` function
+
+Example:
+
+If `stripIgnoreTag = true` is set, the following code:
+
+```html
+code:
+<script>
+  alert(/xss/);
+</script>
+```
+
+would output filtered:
+
+```html
+code:alert(/xss/);
+```
+
+#### Filter out tags and tag bodies not in the whitelist
+
+By using `stripIgnoreTagBody` parameter:
+
+- `false|null|undefined` by default: do nothing
+- `'*'|true`: filter out all tags not in the whitelist
+- `['tag1', 'tag2']`: filter out only specified tags not in the whitelist
+
+Example:
+
+If `stripIgnoreTagBody = ['script']` is set, the following code:
+
+```html
+code:
+<script>
+  alert(/xss/);
+</script>
+```
+
+would output filtered:
+
+```html
+code:
+```
+
+#### Filter out HTML comments
+
+By using `allowCommentTag` parameter:
+
+- `true`: do nothing
+- `false` by default: filter out HTML comments
+
+Example:
+
+If `allowCommentTag = false` is set, the following code:
+
+```html
+code:<!-- something -->
+END
+```
+
+would output filtered:
+
+```html
+code: END
+```
+
+## Examples
+
+### Allow attributes of whitelist tags start with `data-`
+
+```javascript
+var source = '<div a="1" b="2" data-a="3" data-b="4">hello</div>';
+var html = xss(source, {
+  onIgnoreTagAttr: function (tag, name, value, isWhiteAttr) {
+    if (name.substr(0, 5) === "data-") {
+      // escape its value using built-in escapeAttrValue function
+      return name + '="' + xss.escapeAttrValue(value) + '"';
+    }
+  },
+});
+
+console.log("%s\nconvert to:\n%s", source, html);
+```
+
+Result:
+
+```html
+<div a="1" b="2" data-a="3" data-b="4">hello</div>
+convert to:
+<div data-a="3" data-b="4">hello</div>
+```
+
+### Allow tags start with `x-`
+
+```javascript
+var source = "<x><x-1>he<x-2 checked></x-2>wwww</x-1><a>";
+var html = xss(source, {
+  onIgnoreTag: function (tag, html, options) {
+    if (tag.substr(0, 2) === "x-") {
+      // do not filter its attributes
+      return html;
+    }
+  },
+});
+
+console.log("%s\nconvert to:\n%s", source, html);
+```
+
+Result:
+
+```html
+<x
+  ><x-1>he<x-2 checked></x-2>wwww</x-1
+  ><a>
+    convert to: &lt;x&gt;<x-1>he<x-2 checked></x-2>wwww</x-1><a></a></a
+></x>
+```
+
+### Parse images in HTML
+
+```javascript
+var source =
+  '<img src="img1">a<img src="img2">b<img src="img3">c<img src="img4">d';
+var list = [];
+var html = xss(source, {
+  onTagAttr: function (tag, name, value, isWhiteAttr) {
+    if (tag === "img" && name === "src") {
+      // Use the built-in friendlyAttrValue function to escape attribute
+      // values. It supports converting entity tags such as &lt; to printable
+      // characters such as <
+      list.push(xss.friendlyAttrValue(value));
+    }
+    // Return nothing, means keep the default handling measure
+  },
+});
+
+console.log("image list:\n%s", list.join(", "));
+```
+
+Result:
+
+```html
+image list: img1, img2, img3, img4
+```
+
+### Filter out HTML tags (keeps only plain text)
+
+```javascript
+var source = "<strong>hello</strong><script>alert(/xss/);</script>end";
+var html = xss(source, {
+  whiteList: {}, // empty, means filter out all tags
+  stripIgnoreTag: true, // filter out all HTML not in the whitelist
+  stripIgnoreTagBody: ["script"], // the script tag is a special case, we need
+  // to filter out its content
+});
+
+console.log("text: %s", html);
+```
+
+Result:
+
+```html
+text: helloend
+```
+
+## License
+
+```text
+Copyright (c) 2012-2018 Zongmin Lei(雷宗民) <leizongmin@gmail.com>
+http://ucdok.com
+
+The MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+```

node_modules/xss/README.zh.md

@@ -0,0 +1,491 @@
+[![NPM version][npm-image]][npm-url]
+[![Node.js CI](https://github.com/leizongmin/js-xss/actions/workflows/nodejs.yml/badge.svg)](https://github.com/leizongmin/js-xss/actions/workflows/nodejs.yml)
+[![Test coverage][coveralls-image]][coveralls-url]
+[![David deps][david-image]][david-url]
+[![node version][node-image]][node-url]
+[![npm download][download-image]][download-url]
+[![npm license][license-image]][download-url]
+
+[npm-image]: https://img.shields.io/npm/v/xss.svg?style=flat-square
+[npm-url]: https://npmjs.org/package/xss
+[coveralls-image]: https://img.shields.io/coveralls/leizongmin/js-xss.svg?style=flat-square
+[coveralls-url]: https://coveralls.io/r/leizongmin/js-xss?branch=master
+[david-image]: https://img.shields.io/david/leizongmin/js-xss.svg?style=flat-square
+[david-url]: https://david-dm.org/leizongmin/js-xss
+[node-image]: https://img.shields.io/badge/node.js-%3E=_0.10-green.svg?style=flat-square
+[node-url]: http://nodejs.org/download/
+[download-image]: https://img.shields.io/npm/dm/xss.svg?style=flat-square
+[download-url]: https://npmjs.org/package/xss
+[license-image]: https://img.shields.io/npm/l/xss.svg
+
+# 根据白名单过滤 HTML(防止 XSS 攻击)
+
+![xss](https://nodei.co/npm/xss.png?downloads=true&stars=true)
+
+---
+
+`xss`是一个用于对用户输入的内容进行过滤，以避免遭受 XSS 攻击的模块（[什么是 XSS 攻击？](http://baike.baidu.com/view/2161269.htm)）。主要用于论坛、博客、网上商店等等一些可允许用户录入页面排版、格式控制相关的 HTML 的场景，`xss`模块通过白名单来控制允许的标签及相关的标签属性，另外还提供了一系列的接口以便用户扩展，比其他同类模块更为灵活。
+
+**项目主页：** http://jsxss.com
+
+**在线测试：** http://jsxss.com/zh/try.html
+
+---
+
+## 特性
+
+- 白名单控制允许的 HTML 标签及各标签的属性
+- 通过自定义处理函数，可对任意标签及其属性进行处理
+
+## 参考资料
+
+- [XSS 与字符编码的那些事儿 ---科普文](http://drops.wooyun.org/tips/689)
+- [腾讯实例教程：那些年我们一起学 XSS](http://www.wooyun.org/whitehats/%E5%BF%83%E4%BC%A4%E7%9A%84%E7%98%A6%E5%AD%90)
+- [mXSS 攻击的成因及常见种类](http://drops.wooyun.org/tips/956)
+- [XSS Filter Evasion Cheat Sheet](https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet)
+- [Data URI scheme](http://en.wikipedia.org/wiki/Data_URI_scheme)
+- [XSS with Data URI Scheme](http://hi.baidu.com/badzzzz/item/bdbafe83144619c199255f7b)
+
+## 性能（仅作参考）
+
+- xss 模块：22.53 MB/s
+- validator@0.3.7 模块的 xss()函数：6.9 MB/s
+
+测试代码参考 benchmark 目录
+
+## 安装
+
+### NPM
+
+```bash
+npm install xss
+```
+
+### Bower
+
+```bash
+bower install xss
+```
+
+或者
+
+```bash
+bower install https://github.com/leizongmin/js-xss.git
+```
+
+## 使用方法
+
+### 在 Node.js 中使用
+
+```javascript
+var xss = require("xss");
+var html = xss('<script>alert("xss");</script>');
+console.log(html);
+```
+
+### 在浏览器端使用
+
+Shim 模式（参考文件 `test/test.html`）:
+
+```html
+<script src="https://rawgit.com/leizongmin/js-xss/master/dist/xss.js"></script>
+<script>
+  // 使用函数名 filterXSS，用法一样
+  var html = filterXSS('<script>alert("xss");</scr' + "ipt>");
+  alert(html);
+</script>
+```
+
+AMD 模式（参考文件 `test/test_amd.html`）:
+
+```html
+<script>
+  require.config({
+    baseUrl: "./",
+    paths: {
+      xss: "https://rawgit.com/leizongmin/js-xss/master/dist/xss.js",
+    },
+    shim: {
+      xss: { exports: "filterXSS" },
+    },
+  });
+  require(["xss"], function (xss) {
+    var html = xss('<script>alert("xss");</scr' + "ipt>");
+    alert(html);
+  });
+</script>
+```
+
+**说明：请勿将 URL https://rawgit.com/leizongmin/js-xss/master/dist/xss.js 用于生产环境。**
+
+### 使用命令行工具来对文件进行 XSS 处理
+
+### 处理文件
+
+可通过内置的 `xss` 命令来对输入的文件进行 XSS 处理。使用方法：
+
+```bash
+xss -i <源文件> -o <目标文件>
+```
+
+例：
+
+```bash
+xss -i origin.html -o target.html
+```
+
+### 在线测试
+
+执行以下命令，可在命令行中输入 HTML 代码，并看到过滤后的代码：
+
+```bash
+xss -t
+```
+
+详细命令行参数说明，请输入 `$ xss -h` 来查看。
+
+## 自定义过滤规则
+
+在调用 `xss()` 函数进行过滤时，可通过第二个参数来设置自定义规则：
+
+```javascript
+options = {}; // 自定义规则
+html = xss('<script>alert("xss");</script>', options);
+```
+
+如果不想每次都传入一个 `options` 参数，可以创建一个 `FilterXSS` 实例（使用这种方法速度更快）：
+
+```
+options = {};  // 自定义规则
+myxss = new xss.FilterXSS(options);
+// 以后直接调用 myxss.process() 来处理即可
+html = myxss.process('<script>alert("xss");</script>');
+```
+
+`options` 参数的详细说明见下文。
+
+### 白名单
+
+通过 `whiteList` 来指定，格式为：`{'标签名': ['属性1', '属性2']}`。不在白名单上的标签将被过滤，不在白名单上的属性也会被过滤。以下是示例：
+
+```javascript
+// 只允许a标签，该标签只允许href, title, target这三个属性
+var options = {
+  whiteList: {
+    a: ["href", "title", "target"],
+  },
+};
+// 使用以上配置后，下面的HTML
+// <a href="#" onclick="hello()"><i>大家好</i></a>
+// 将被过滤为
+// <a href="#">大家好</a>
+```
+
+默认白名单参考 `xss.whiteList`。
+
+### 自定义匹配到标签时的处理方法
+
+通过 `onTag` 来指定相应的处理函数。以下是详细说明：
+
+```javascript
+function onTag(tag, html, options) {
+  // tag是当前的标签名称，比如<a>标签，则tag的值是'a'
+  // html是该标签的HTML，比如<a>标签，则html的值是'<a>'
+  // options是一些附加的信息，具体如下：
+  //   isWhite    boolean类型，表示该标签是否在白名单上
+  //   isClosing  boolean类型，表示该标签是否为闭合标签，比如</a>时为true
+  //   position        integer类型，表示当前标签在输出的结果中的起始位置
+  //   sourcePosition  integer类型，表示当前标签在原HTML中的起始位置
+  // 如果返回一个字符串，则当前标签将被替换为该字符串
+  // 如果不返回任何值，则使用默认的处理方法：
+  //   在白名单上：  通过onTagAttr来过滤属性，详见下文
+  //   不在白名单上：通过onIgnoreTag指定，详见下文
+}
+```
+
+### 自定义匹配到标签的属性时的处理方法
+
+通过 `onTagAttr` 来指定相应的处理函数。以下是详细说明：
+
+```javascript
+function onTagAttr(tag, name, value, isWhiteAttr) {
+  // tag是当前的标签名称，比如<a>标签，则tag的值是'a'
+  // name是当前属性的名称，比如href="#"，则name的值是'href'
+  // value是当前属性的值，比如href="#"，则value的值是'#'
+  // isWhiteAttr是否为白名单上的属性
+  // 如果返回一个字符串，则当前属性值将被替换为该字符串
+  // 如果不返回任何值，则使用默认的处理方法
+  //   在白名单上：  调用safeAttrValue来过滤属性值，并输出该属性，详见下文
+  //   不在白名单上：通过onIgnoreTagAttr指定，详见下文
+}
+```
+
+### 自定义匹配到不在白名单上的标签时的处理方法
+
+通过 `onIgnoreTag` 来指定相应的处理函数。以下是详细说明：
+
+```javascript
+function onIgnoreTag(tag, html, options) {
+  // 参数说明与onTag相同
+  // 如果返回一个字符串，则当前标签将被替换为该字符串
+  // 如果不返回任何值，则使用默认的处理方法（通过escape指定，详见下文）
+}
+```
+
+### 自定义匹配到不在白名单上的属性时的处理方法
+
+通过 `onIgnoreTagAttr` 来指定相应的处理函数。以下是详细说明：
+
+```javascript
+function onIgnoreTagAttr(tag, name, value, isWhiteAttr) {
+  // 参数说明与onTagAttr相同
+  // 如果返回一个字符串，则当前属性值将被替换为该字符串
+  // 如果不返回任何值，则使用默认的处理方法（删除该属性）
+}
+```
+
+### 自定义 HTML 转义函数
+
+通过 `escapeHtml` 来指定相应的处理函数。以下是默认代码 **（不建议修改）** ：
+
+```javascript
+function escapeHtml(html) {
+  return html.replace(/</g, "&lt;").replace(/>/g, "&gt;");
+}
+```
+
+### 自定义标签属性值的转义函数
+
+通过 `safeAttrValue` 来指定相应的处理函数。以下是详细说明：
+
+```javascript
+function safeAttrValue(tag, name, value) {
+  // 参数说明与onTagAttr相同（没有options参数）
+  // 返回一个字符串表示该属性值
+}
+```
+
+### 自定义 CSS 过滤器
+
+如果配置中允许了标签的 `style` 属性，则它的值会通过[cssfilter](https://github.com/leizongmin/js-css-filter) 模块处理。
+`cssfilter` 模块包含了一个默认的 CSS 白名单，你可以通过以下的方式配置：
+
+```javascript
+myxss = new xss.FilterXSS({
+  css: {
+    whiteList: {
+      position: /^fixed|relative$/,
+      top: true,
+      left: true,
+    },
+  },
+});
+html = myxss.process('<script>alert("xss");</script>');
+```
+
+如果不想使用 CSS 过滤器来处理 `style` 属性的内容，可指定 `css` 选项的值为 `false`：
+
+```javascript
+myxss = new xss.FilterXSS({
+  css: false,
+});
+```
+
+要获取更多的帮助信息可看这里：https://github.com/leizongmin/js-css-filter
+
+### 快捷配置
+
+#### 去掉不在白名单上的标签
+
+通过 `stripIgnoreTag` 来设置：
+
+- `true`：去掉不在白名单上的标签
+- `false`：（默认），使用配置的`escape`函数对该标签进行转义
+
+示例：
+
+当设置 `stripIgnoreTag = true`时，以下代码
+
+```html
+code:
+<script>
+  alert(/xss/);
+</script>
+```
+
+过滤后将输出
+
+```html
+code:alert(/xss/);
+```
+
+#### 去掉不在白名单上的标签及标签体
+
+通过 `stripIgnoreTagBody` 来设置：
+
+- `false|null|undefined`：（默认），不特殊处理
+- `'*'|true`：去掉所有不在白名单上的标签
+- `['tag1', 'tag2']`：仅去掉指定的不在白名单上的标签
+
+示例：
+
+当设置 `stripIgnoreTagBody = ['script']`时，以下代码
+
+```html
+code:
+<script>
+  alert(/xss/);
+</script>
+```
+
+过滤后将输出
+
+```html
+code:
+```
+
+#### 去掉 HTML 备注
+
+通过 `allowCommentTag` 来设置：
+
+- `true`：不处理
+- `false`：（默认），自动去掉 HTML 中的备注
+
+示例：
+
+当设置 `allowCommentTag = false` 时，以下代码
+
+```html
+code:<!-- something -->
+END
+```
+
+过滤后将输出
+
+```html
+code: END
+```
+
+## 应用实例
+
+### 允许标签以 data-开头的属性
+
+```javascript
+var source = '<div a="1" b="2" data-a="3" data-b="4">hello</div>';
+var html = xss(source, {
+  onIgnoreTagAttr: function (tag, name, value, isWhiteAttr) {
+    if (name.substr(0, 5) === "data-") {
+      // 通过内置的escapeAttrValue函数来对属性值进行转义
+      return name + '="' + xss.escapeAttrValue(value) + '"';
+    }
+  },
+});
+
+console.log("%s\nconvert to:\n%s", source, html);
+```
+
+运行结果：
+
+```html
+<div a="1" b="2" data-a="3" data-b="4">hello</div>
+convert to:
+<div data-a="3" data-b="4">hello</div>
+```
+
+### 允许名称以 x-开头的标签
+
+```javascript
+var source = "<x><x-1>he<x-2 checked></x-2>wwww</x-1><a>";
+var html = xss(source, {
+  onIgnoreTag: function (tag, html, options) {
+    if (tag.substr(0, 2) === "x-") {
+      // 不对其属性列表进行过滤
+      return html;
+    }
+  },
+});
+
+console.log("%s\nconvert to:\n%s", source, html);
+```
+
+运行结果：
+
+```html
+<x
+  ><x-1>he<x-2 checked></x-2>wwww</x-1
+  ><a>
+    convert to: &lt;x&gt;<x-1>he<x-2 checked></x-2>wwww</x-1><a></a></a
+></x>
+```
+
+### 分析 HTML 代码中的图片列表
+
+```javascript
+var source =
+  '<img src="img1">a<img src="img2">b<img src="img3">c<img src="img4">d';
+var list = [];
+var html = xss(source, {
+  onTagAttr: function (tag, name, value, isWhiteAttr) {
+    if (tag === "img" && name === "src") {
+      // 使用内置的friendlyAttrValue函数来对属性值进行转义，可将&lt;这类的实体标记转换成打印字符<
+      list.push(xss.friendlyAttrValue(value));
+    }
+    // 不返回任何值，表示还是按照默认的方法处理
+  },
+});
+
+console.log("image list:\n%s", list.join(", "));
+```
+
+运行结果：
+
+```html
+image list: img1, img2, img3, img4
+```
+
+### 去除 HTML 标签（只保留文本内容）
+
+```javascript
+var source = "<strong>hello</strong><script>alert(/xss/);</script>end";
+var html = xss(source, {
+  whiteList: {}, // 白名单为空，表示过滤所有标签
+  stripIgnoreTag: true, // 过滤所有非白名单标签的HTML
+  stripIgnoreTagBody: ["script"], // script标签较特殊，需要过滤标签中间的内容
+});
+
+console.log("text: %s", html);
+```
+
+运行结果：
+
+```html
+text: helloend
+```
+
+## 授权协议
+
+```text
+Copyright (c) 2012-2018 Zongmin Lei(雷宗民) <leizongmin@gmail.com>
+http://ucdok.com
+
+The MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+```

node_modules/xss/bin/xss

@@ -0,0 +1,67 @@
+#!/usr/bin/env node
+
+/**
+ * 命令行工具
+ *
+ * @author Zongmin Lei<leizongmin@gmail.com>
+ */
+
+var fs = require('fs');
+var path = require('path');
+var program = require('commander');
+var xss = require('../');
+var packageInfo = require('../package.json');
+
+program
+  .version(packageInfo.version)
+  .option('-t, --test', 'active test')
+  .option('-i, --input <input_file>', 'input file name')
+  .option('-o, --output <output_file>', 'output filename')
+  .option('-c, --config <config_file>', 'load custom config')
+  .option('-s, --strip-ignore-tag', 'set stripIgnoreTag=true')
+  .option('-b, --strip-ignore-tag-body', 'set stripIgnoreTagBody=true');
+
+program.on('--help', function () {
+  console.log('  Examples:');
+  console.log('');
+  console.log('    $ xss -t');
+  console.log('    $ xss -i origin.html');
+  console.log('    $ xss -i origin.html -o targer.html');
+  console.log('    $ xss -i origin.html -c config.js');
+  console.log('    $ xss -i origin.html -s');
+  console.log('    $ xss -i origin.html -s -b');
+  console.log('');
+  console.log('  For more details, please see: https://npmjs.org/package/xss')
+});
+
+program.parse(process.argv);
+
+if (program.test) {
+  require('../lib/cli');
+  return;
+}
+
+var config = {};
+if (program.config) {
+  config = require(path.resolve(program.config));
+}
+if (program.input) {
+  var input = fs.readFileSync(program.input, 'utf8');
+} else {
+  program.help();
+}
+
+if (program['strip-ignore-tag']) {
+  config.stripIgnoreTag = true;
+}
+if (program['strip-ignore-tag-body']) {
+  config.stripIgnoreTagBody = true;
+}
+
+var output = xss(input, config);
+
+if (program.output) {
+  fs.writeFileSync(program.output, output);
+} else {
+  console.log(output);
+}

node_modules/xss/dist/test.html

@@ -0,0 +1,15 @@
+<!doctype html>
+<html>
+<head>
+  <title>测试</title>
+  <meta charset="utf8">
+</head>
+<body>
+  <pre id="result"></pre>
+</body>
+</html>
+<script src="xss.js"></script>
+<script>
+var code = '<script>alert("xss");</' + 'script>';
+document.querySelector('#result').innerText = code + '\n被转换成了\n' + filterXSS(code);
+</script>

node_modules/xss/lib/cli.js

@@ -0,0 +1,45 @@
+/**
+ * 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);
+});

node_modules/xss/lib/default.js

@@ -0,0 +1,461 @@
+/**
+ * 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",
+      "crossorigin",
+      "loop",
+      "muted",
+      "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: [],
+    figcaption: [],
+    figure: [],
+    font: ["color", "size", "face"],
+    footer: [],
+    h1: [],
+    h2: [],
+    h3: [],
+    h4: [],
+    h5: [],
+    h6: [],
+    header: [],
+    hr: [],
+    i: [],
+    img: ["src", "alt", "title", "width", "height", "loading"],
+    ins: ["datetime"],
+    kbd: [],
+    li: [],
+    mark: [],
+    nav: [],
+    ol: [],
+    p: [],
+    pre: [],
+    s: [],
+    section: [],
+    small: [],
+    span: [],
+    sub: [],
+    summary: [],
+    sup: [],
+    strong: [],
+    strike: [],
+    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",
+      "crossorigin",
+      "loop",
+      "muted",
+      "playsinline",
+      "poster",
+      "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.substr(0, 11) === "data:image/" ||
+        value.substr(0, 6) === "ftp://" ||
+        value.substr(0, 2) === "./" ||
+        value.substr(0, 3) === "../" ||
+        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 double 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) {
+  var retHtml = "";
+  var lastPos = 0;
+  while (lastPos < html.length) {
+    var i = html.indexOf("<!--", lastPos);
+    if (i === -1) {
+      retHtml += html.slice(lastPos);
+      break;
+    }
+    retHtml += html.slice(lastPos, i);
+    var j = html.indexOf("-->", i);
+    if (j === -1) {
+      break;
+    }
+    lastPos = j + 3;
+  }
+  return retHtml;
+}
+
+/**
+ * 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.attributeWrapSign = '"';
+exports.cssFilter = defaultCSSFilter;
+exports.getDefaultCSSWhiteList = getDefaultCSSWhiteList;

node_modules/xss/lib/index.js

@@ -0,0 +1,51 @@
+/**
+ * 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;
+
+(function () {
+  for (var i in DEFAULT) {
+    exports[i] = DEFAULT[i];
+  }
+  for (var j in parser) {
+    exports[j] = parser[j];
+  }
+})();
+
+// 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;
+}

node_modules/xss/lib/parser.js

@@ -0,0 +1,257 @@
+/**
+ * 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);
+  var tagName;
+  if (i === -1) {
+    tagName = html.slice(1, -1);
+  } else {
+    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) {
+  "use strict";
+
+  var rethtml = "";
+  var lastPos = 0;
+  var tagStart = false;
+  var quoteStart = false;
+  var currentPos = 0;
+  var len = html.length;
+  var currentTagName = "";
+  var currentHtml = "";
+
+  chariterator: 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 === ">" || currentPos === len - 1) {
+          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 === "'") {
+          var i = 1;
+          var ic = html.charAt(currentPos - i);
+
+          while (ic.trim() === "" || ic === "=") {
+            if (ic === "=") {
+              quoteStart = c;
+              continue chariterator;
+            }
+            ic = html.charAt(currentPos - ++i);
+          }
+        }
+      } else {
+        if (c === quoteStart) {
+          quoteStart = false;
+          continue;
+        }
+      }
+    }
+  }
+  if (lastPos < len) {
+    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) {
+  "use strict";
+
+  var lastPos = 0;
+  var lastMarkPos = 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;
+      lastMarkPos = html.charAt(lastPos) === '"' || html.charAt(lastPos) === "'" ? lastPos : findNextQuotationMark(html, i + 1);
+      continue;
+    }
+    if (tmpName !== false) {
+      if (
+        i === lastMarkPos
+      ) {
+        j = html.indexOf(c, i + 1);
+        if (j === -1) {
+          break;
+        } else {
+          v = _.trim(html.slice(lastMarkPos + 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 findNextQuotationMark(str, i) {
+  for (; i < str.length; i++) {
+    var c = str[i];
+    if (c === " ") continue;
+    if (c === "'" || 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;

node_modules/xss/lib/util.js

@@ -0,0 +1,34 @@
+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;
+  },
+};

node_modules/xss/lib/xss.js

@@ -0,0 +1,232 @@
+/**
+ * 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;
+}
+
+function keysToLowerCase(obj) {
+  var ret = {};
+  for (var i in obj) {
+    if (Array.isArray(obj[i])) {
+      ret[i.toLowerCase()] = obj[i].map(function (item) {
+        return item.toLowerCase();
+      });
+    } else {
+      ret[i.toLowerCase()] = obj[i];
+    }
+  }
+  return ret;
+}
+
+/**
+ * FilterXSS class
+ *
+ * @param {Object} options
+ *        whiteList (or allowList), 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;
+  }
+  if (options.whiteList || options.allowList) {
+    options.whiteList = keysToLowerCase(options.whiteList || options.allowList);
+  } else {
+    options.whiteList = DEFAULT.whiteList;
+  }
+
+  this.attributeWrapSign = options.singleQuotedAttributeValue === true ? "'" : DEFAULT.attributeWrapSign;
+
+  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 attributeWrapSign = me.attributeWrapSign;
+  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) {
+    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: Object.prototype.hasOwnProperty.call(whiteList, 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 + '=' + attributeWrapSign + value + attributeWrapSign;
+            } else {
+              return name;
+            }
+          } else {
+            // call `onIgnoreTagAttr()`
+            ret = onIgnoreTagAttr(tag, name, value, isWhiteAttr);
+            if (!isNull(ret)) return ret;
+            return;
+          }
+        });
+
+        // build new tag html
+        html = "<" + tag;
+        if (attrsHtml) html += " " + attrsHtml;
+        if (attrs.closing) html += " /";
+        html += ">";
+        return html;
+      } else {
+        // call `onIgnoreTag()`
+        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;

node_modules/xss/package.json

@@ -0,0 +1,65 @@
+{
+  "name": "xss",
+  "main": "./lib/index.js",
+  "typings": "./typings/xss.d.ts",
+  "version": "1.0.15",
+  "description": "Sanitize untrusted HTML (to prevent XSS) with a configuration specified by a Whitelist",
+  "author": "Zongmin Lei <leizongmin@gmail.com> (http://ucdok.com)",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/leizongmin/js-xss.git"
+  },
+  "engines": {
+    "node": ">= 0.10.0"
+  },
+  "dependencies": {
+    "commander": "^2.20.3",
+    "cssfilter": "0.0.10"
+  },
+  "devDependencies": {
+    "browserify": "^17.0.0",
+    "coveralls": "^3.1.1",
+    "debug": "^4.3.4",
+    "eslint": "^8.16.0",
+    "mocha": "^8.4.0",
+    "nyc": "^15.1.0",
+    "uglify-js": "^3.15.5"
+  },
+  "files": [
+    "lib",
+    "bin/xss",
+    "dist",
+    "typings/*.d.ts"
+  ],
+  "bin": {
+    "xss": "./bin/xss"
+  },
+  "scripts": {
+    "lint": "eslint lib/**",
+    "test": "export DEBUG=xss:* && mocha -t 5000",
+    "test-cov": "nyc --reporter=lcov mocha --exit \"test/*.js\" && nyc report",
+    "coveralls": "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
+    "build": "./bin/build",
+    "prepublish": "npm run test && npm run build"
+  },
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/leizongmin/js-xss/issues"
+  },
+  "homepage": "https://github.com/leizongmin/js-xss",
+  "keywords": [
+    "sanitization",
+    "xss",
+    "sanitize",
+    "sanitisation",
+    "input",
+    "security",
+    "escape",
+    "encode",
+    "filter",
+    "validator",
+    "html",
+    "injection",
+    "whitelist"
+  ]
+}

node_modules/xss/typings/xss.d.ts

@@ -0,0 +1,205 @@
+/**
+ * xss
+ *
+ * @author Zongmin Lei<leizongmin@gmail.com>
+ */
+
+declare module "xss" {
+  global {
+    function filterXSS(html: string, options?: IFilterXSSOptions): string;
+
+    namespace XSS {
+      export interface IFilterXSSOptions {
+        allowList?: IWhiteList;
+        whiteList?: IWhiteList;
+        onTag?: OnTagHandler;
+        onTagAttr?: OnTagAttrHandler;
+        onIgnoreTag?: OnTagHandler;
+        onIgnoreTagAttr?: OnTagAttrHandler;
+        safeAttrValue?: SafeAttrValueHandler;
+        escapeHtml?: EscapeHandler;
+        stripIgnoreTag?: boolean;
+        stripIgnoreTagBody?: boolean | string[];
+        allowCommentTag?: boolean;
+        stripBlankChar?: boolean;
+        singleQuotedAttributeValue?: boolean;
+        css?: {} | boolean;
+      }
+
+      interface IWhiteList extends Record<string, string[] | undefined> {
+        a?: string[];
+        abbr?: string[];
+        address?: string[];
+        area?: string[];
+        article?: string[];
+        aside?: string[];
+        audio?: string[];
+        b?: string[];
+        bdi?: string[];
+        bdo?: string[];
+        big?: string[];
+        blockquote?: string[];
+        br?: string[];
+        caption?: string[];
+        center?: string[];
+        cite?: string[];
+        code?: string[];
+        col?: string[];
+        colgroup?: string[];
+        dd?: string[];
+        del?: string[];
+        details?: string[];
+        div?: string[];
+        dl?: string[];
+        dt?: string[];
+        em?: string[];
+        figure?: string[];
+        figcaption?: string[];
+        font?: string[];
+        footer?: string[];
+        h1?: string[];
+        h2?: string[];
+        h3?: string[];
+        h4?: string[];
+        h5?: string[];
+        h6?: string[];
+        header?: string[];
+        hr?: string[];
+        i?: string[];
+        img?: string[];
+        ins?: string[];
+        li?: string[];
+        mark?: string[];
+        nav?: string[];
+        ol?: string[];
+        p?: string[];
+        pre?: string[];
+        s?: string[];
+        section?: string[];
+        small?: string[];
+        span?: string[];
+        sub?: string[];
+        sup?: string[];
+        strong?: string[];
+        strike?: string[];
+        summary?: string[];
+        table?: string[];
+        tbody?: string[];
+        td?: string[];
+        tfoot?: string[];
+        th?: string[];
+        thead?: string[];
+        tr?: string[];
+        tt?: string[];
+        u?: string[];
+        ul?: string[];
+        video?: string[];
+      }
+
+      type OnTagHandler = (
+        tag: string,
+        html: string,
+        options: {
+          sourcePosition?: number;
+          position?: number;
+          isClosing?: boolean;
+          isWhite?: boolean;
+        }
+      ) => string | void;
+
+      type OnTagAttrHandler = (
+        tag: string,
+        name: string,
+        value: string,
+        isWhiteAttr: boolean
+      ) => string | void;
+
+      type SafeAttrValueHandler = (
+        tag: string,
+        name: string,
+        value: string,
+        cssFilter: ICSSFilter
+      ) => string;
+
+      type EscapeHandler = (str: string) => string;
+
+      interface ICSSFilter {
+        process(value: string): string;
+      }
+    }
+  }
+  export interface IFilterXSSOptions extends XSS.IFilterXSSOptions {}
+
+  export interface IWhiteList extends XSS.IWhiteList {}
+
+  export type OnTagHandler = XSS.OnTagHandler;
+
+  export type OnTagAttrHandler = XSS.OnTagAttrHandler;
+
+  export type SafeAttrValueHandler = XSS.SafeAttrValueHandler;
+
+  export type EscapeHandler = XSS.EscapeHandler;
+
+  export interface ICSSFilter extends XSS.ICSSFilter {}
+
+  export function StripTagBody(
+    tags: string[],
+    next: () => void
+  ): {
+    onIgnoreTag(
+      tag: string,
+      html: string,
+      options: {
+        position: number;
+        isClosing: boolean;
+      }
+    ): string;
+    remove(html: string): string;
+  };
+
+  export class FilterXSS {
+    constructor(options?: IFilterXSSOptions);
+    process(html: string): string;
+  }
+
+  export function filterXSS(html: string, options?: IFilterXSSOptions): string;
+  export function parseTag(
+    html: string,
+    onTag: (
+      sourcePosition: number,
+      position: number,
+      tag: string,
+      html: string,
+      isClosing: boolean
+    ) => string,
+    escapeHtml: EscapeHandler
+  ): string;
+  export function parseAttr(
+    html: string,
+    onAttr: (name: string, value: string) => string
+  ): string;
+  export const whiteList: IWhiteList;
+  export function getDefaultWhiteList(): IWhiteList;
+  export const onTag: OnTagHandler;
+  export const onIgnoreTag: OnTagHandler;
+  export const onTagAttr: OnTagAttrHandler;
+  export const onIgnoreTagAttr: OnTagAttrHandler;
+  export const safeAttrValue: SafeAttrValueHandler;
+  export const escapeHtml: EscapeHandler;
+  export const escapeQuote: EscapeHandler;
+  export const unescapeQuote: EscapeHandler;
+  export const escapeHtmlEntities: EscapeHandler;
+  export const escapeDangerHtml5Entities: EscapeHandler;
+  export const clearNonPrintableCharacter: EscapeHandler;
+  export const friendlyAttrValue: EscapeHandler;
+  export const escapeAttrValue: EscapeHandler;
+  export function onIgnoreTagStripAll(): string;
+  export const stripCommentTag: EscapeHandler;
+  export const stripBlankChar: EscapeHandler;
+  export const attributeWrapSign: string;
+  export const cssFilter: ICSSFilter;
+  export function getDefaultCSSWhiteList(): ICSSFilter;
+
+  const xss: (html: string, options?: IFilterXSSOptions) => string;
+  export default xss;
+}