diff --git a/.eslintrc.js b/.eslintrc.js
index 4756265..563b77b 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -6,6 +6,7 @@ module.exports = {
   env: {
     // Your environments (which contains several predefined global variables)
     'node': true,
+    es6: true,
   },
   globals: {
     // Your global variables (setting to false means it's not allowed to be reassigned)
diff --git a/.gitignore b/.gitignore
index a1b3697..ab914a6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,5 @@
 node_modules
 *.bkp
 *.log
+*.pdf
 
diff --git a/gen_pdf.js b/gen_pdf.js
new file mode 100644
index 0000000..27ba42e
--- /dev/null
+++ b/gen_pdf.js
@@ -0,0 +1,15 @@
+const markdownpdf = require('markdown-pdf')
+const path = require('path')
+const fs = require('fs')
+
+const bookPath = path.join(__dirname, 'output/book.pdf')
+const markdownPath = path.join(__dirname, 'text')
+const mdDocs = fs.readdirSync(markdownPath).filter(file => {
+  return path.extname(file) === '.md'
+}).map(file => path.join(markdownPath, file))
+const paperFormat = 'A6'
+markdownpdf({
+  paperFormat,
+}).concat.from(mdDocs).to(bookPath, function () {
+  console.log('Created', paperFormat, bookPath)
+})
\ No newline at end of file
diff --git a/package.json b/package.json
index 054c641..c0525ac 100644
--- a/package.json
+++ b/package.json
@@ -7,12 +7,14 @@
     "dev": "npm run docs:dev",
     "docs:build": "vuepress build text",
     "build": "cross-env NODE_OPTIONS=--openssl-legacy-provider npm run docs:build",
+    "pdf": "vuepress export text",
     "preview": "cd output && anywhere 8888"
   },
   "repository": "git@github.com:yunnysunny/nodebook.git",
   "author": "yunnysunny <yunnysunny@gmail.com>",
   "license": "MIT",
   "devDependencies": {
+    "@whyun/vuepress-plugin-pdf-export": "^1.2.0",
     "cross-env": "^7.0.3",
     "eslint": "^8.56.0",
     "markdown-it-disable-url-encode": "^1.0.1",
diff --git a/text/.vuepress/config.js b/text/.vuepress/config.js
index 8eb794e..e31a07f 100644
--- a/text/.vuepress/config.js
+++ b/text/.vuepress/config.js
@@ -4,6 +4,7 @@ const baseUrl = 'https://blog.whyun.com/nodebook'
 module.exports = {
   title: 'nodebook',
   description: 'Node 基础教程',
+ host: '127.0.0.1',
   base,
   locales: {
     '/': {
@@ -59,6 +60,28 @@ module.exports = {
       hostname: baseUrl,
       // 排除无实际内容的页面
       exclude: ["/404.html"]
+    },
+    // 'vuepress-plugin-export': {
+      
+    // },
+    '@whyun/vuepress-plugin-pdf-export': {
+      puppeteerLaunchOptions: {
+        args: ['--no-sandbox', '--disable-setuid-sandbox']
+      },
+      filter: function(page) {
+        return !(['/SUMMARY.html'].includes(page.path))
+      },
+      sorter: function(a, b) {
+        const pathA = a.path
+        const pathB = b.path
+        if (pathA < pathB) {
+          return -1
+        }
+        if (pathA > pathB) {
+          return 1
+        }
+        return 0
+      }
     }
   }
 
diff --git a/text/11_node_optimization.md b/text/11_node_optimization.md
index 9cead2b..3f1e2de 100644
--- a/text/11_node_optimization.md
+++ b/text/11_node_optimization.md
@@ -1,4 +1,4 @@
-## Node.js 调优
+## 11 Node.js 调优
 
 作为一门后端语言，肯定要求运行的效率最优化，以实现对于资源最小损耗，这一章正是围绕这个话题展开。调优是一个有挑战性的活儿，可能经常让人摸不着头脑，下面的内容尽量使用实例来带入一个个调优的场景。
 
diff --git a/text/a5_node_multi_versions.md b/text/a5_node_multi_versions.md
index 8d45762..2438189 100644
--- a/text/a5_node_multi_versions.md
+++ b/text/a5_node_multi_versions.md
@@ -1,4 +1,4 @@
-## A 5 安装多版本 Node
+## A5 安装多版本 Node
 
 Node 基本上在每年国庆节放假回来后，就会发布一个 LTS 版本，会给开发者带来具有新特性的稳定版本。对于开发者来说，肯定会有跟进新版特性的需求，但是有可能在升级过程中又会发现部分项目的依赖包短时间内又不能兼容新版本的 Node，这样就导致一个比较尴尬的现象，你本地开发环境起码得维护两个 Node 版本来回切换。[nvm](https://github.com/nvm-sh/nvm) 就是解决这个需求的一个命令行工具。
 
diff --git a/yarn.lock b/yarn.lock
index 06d397a..6bf0551 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1118,6 +1118,13 @@
     "@nodelib/fs.scandir" "2.1.5"
     fastq "^1.6.0"
 
+"@rkusa/linebreak@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.npmmirror.com/@rkusa/linebreak/-/linebreak-1.0.0.tgz#987b6b1f8cc8f5901afbf45f4e9f7744518d0163"
+  integrity sha512-yCSm87XA1aYMgfcABSxcIkk3JtCw3AihNceHY+DnZGLvVP/g2z3UWZbi0xIoYpZWAJEVPr5Zt3QE37Q80wF1pA==
+  dependencies:
+    unicode-trie "^0.3.0"
+
 "@sindresorhus/is@^0.14.0":
   version "0.14.0"
   resolved "https://registry.npmmirror.com/@sindresorhus/is/-/is-0.14.0.tgz#9fb3a3cf3132328151f353de4632e01e52102bea"
@@ -1223,6 +1230,11 @@
   resolved "https://registry.npmmirror.com/@types/mdurl/-/mdurl-1.0.5.tgz#3e0d2db570e9fb6ccb2dc8fde0be1d79ac810d39"
   integrity sha512-6L6VymKTzYSrEf4Nev4Xa1LCHKrlTlYCBMTlQKFuddo1CvQcE52I0mwfOJayueUC7MJuXOeHTcIU683lzd0cUA==
 
+"@types/mime-types@^2.1.0":
+  version "2.1.4"
+  resolved "https://registry.npmmirror.com/@types/mime-types/-/mime-types-2.1.4.tgz#93a1933e24fed4fb9e4adc5963a63efcbb3317a2"
+  integrity sha512-lfU4b34HOri+kAY5UheuFMWPDOI+OPceBSHZKp69gEyTL/mmJ4cnU6Y/rlme3UL3GyOn6Y42hyIEw0/q8sWx5w==
+
 "@types/mime@*":
   version "3.0.4"
   resolved "https://registry.npmmirror.com/@types/mime/-/mime-3.0.4.tgz#2198ac274de6017b44d941e00261d5bc6a0e0a45"
@@ -1773,6 +1785,14 @@
     "@webassemblyjs/wast-parser" "1.9.0"
     "@xtuc/long" "4.2.2"
 
+"@whyun/vuepress-plugin-pdf-export@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.npmjs.org/@whyun/vuepress-plugin-pdf-export/-/vuepress-plugin-pdf-export-1.2.0.tgz#99b2d90e92255847b21aa067e87b802be308a942"
+  integrity sha512-t8W5uoRFCOVHdRGUErzF6UvUDX9a76UvhPB/vGr1A56hba4rWA68aYSMNGBmp6vEa3tBPpqMGa3GJD8FZk41mA==
+  dependencies:
+    pdfjs "^2.3.5"
+    puppeteer "^2.1.1"
+
 "@xtuc/ieee754@^1.2.0":
   version "1.2.0"
   resolved "https://registry.npmmirror.com/@xtuc/ieee754/-/ieee754-1.2.0.tgz#eef014a3145ae477a1cbc00cd1e552336dceb790"
@@ -1811,6 +1831,11 @@ acorn@^8.9.0:
   resolved "https://registry.npmmirror.com/acorn/-/acorn-8.11.3.tgz#71e0b14e13a4ec160724b38fb7b0f233b1b81d7a"
   integrity sha512-Y9rRfJG5jcKOE0CLisYbojUjIrIEE7AGMzA/Sm4BslANhbS+cDMpgBdcPT91oJ7OuJ9hYJBx59RjbhxVnrF8Xg==
 
+agent-base@5:
+  version "5.1.1"
+  resolved "https://registry.npmmirror.com/agent-base/-/agent-base-5.1.1.tgz#e8fb3f242959db44d63be665db7a8e739537a32c"
+  integrity sha512-TMeqbNl2fMW0nMjTEPOwe3J/PRFP4vqeoNuQMG0HlMrtm5QxKqdvAkZ1pRBQ/ulIyDD5Yq0nJ7YbdD8ey0TO3g==
+
 agentkeepalive@^2.2.0:
   version "2.2.0"
   resolved "https://registry.npmmirror.com/agentkeepalive/-/agentkeepalive-2.2.0.tgz#c5d1bd4b129008f1163f236f86e5faea2026e2ef"
@@ -2393,6 +2418,11 @@ browserslist@^4.0.0, browserslist@^4.12.0, browserslist@^4.22.2:
     node-releases "^2.0.14"
     update-browserslist-db "^1.0.13"
 
+buffer-crc32@~0.2.3:
+  version "0.2.13"
+  resolved "https://registry.npmmirror.com/buffer-crc32/-/buffer-crc32-0.2.13.tgz#0d333e3f00eac50aa1454abd30ef8c2a5d9a7242"
+  integrity sha512-VO9Ht/+p3SN7SKWqcrgEzjGbRSJYTx+Q1pTQC0wrWqHx0vpJraQ6GtHx8tvcg1rlK1byhU5gccxgOgj7B0TDkQ==
+
 buffer-from@^1.0.0:
   version "1.1.2"
   resolved "https://registry.npmmirror.com/buffer-from/-/buffer-from-1.1.2.tgz#2b146a6fd72e80b4f55d255f35ed59a3a9a41bd5"
@@ -2823,7 +2853,7 @@ concat-map@0.0.1:
   resolved "https://registry.npmmirror.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
   integrity sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==
 
-concat-stream@^1.5.0:
+concat-stream@^1.5.0, concat-stream@^1.6.2:
   version "1.6.2"
   resolved "https://registry.npmmirror.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
   integrity sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==
@@ -3254,6 +3284,13 @@ debug@2.6.9, debug@^2.2.0, debug@^2.3.3, debug@^2.6.9:
   dependencies:
     ms "2.0.0"
 
+debug@4, debug@^4.1.0, debug@^4.1.1, debug@^4.3.1, debug@^4.3.2:
+  version "4.3.4"
+  resolved "https://registry.npmmirror.com/debug/-/debug-4.3.4.tgz#1319f6579357f2338d3337d2cdd4914bb5dcc865"
+  integrity sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==
+  dependencies:
+    ms "2.1.2"
+
 debug@^3.2.7:
   version "3.2.7"
   resolved "https://registry.npmmirror.com/debug/-/debug-3.2.7.tgz#72580b7e9145fb39b6676f9c5e5fb100b934179a"
@@ -3261,13 +3298,6 @@ debug@^3.2.7:
   dependencies:
     ms "^2.1.1"
 
-debug@^4.1.0, debug@^4.1.1, debug@^4.3.1, debug@^4.3.2:
-  version "4.3.4"
-  resolved "https://registry.npmmirror.com/debug/-/debug-4.3.4.tgz#1319f6579357f2338d3337d2cdd4914bb5dcc865"
-  integrity sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==
-  dependencies:
-    ms "2.1.2"
-
 debug@~3.1.0:
   version "3.1.0"
   resolved "https://registry.npmmirror.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
@@ -4122,6 +4152,16 @@ extglob@^2.0.4:
     snapdragon "^0.8.1"
     to-regex "^3.0.1"
 
+extract-zip@^1.6.6:
+  version "1.7.0"
+  resolved "https://registry.npmmirror.com/extract-zip/-/extract-zip-1.7.0.tgz#556cc3ae9df7f452c493a0cfb51cc30277940927"
+  integrity sha512-xoh5G1W/PB0/27lXgMQyIhP5DSY/LhoCsOyZgb+6iMmRtCwVBo55uKaMoEYrDCKQhWvqEip5ZPKAc6eFNyf/MA==
+  dependencies:
+    concat-stream "^1.6.2"
+    debug "^2.6.9"
+    mkdirp "^0.5.4"
+    yauzl "^2.10.0"
+
 extsprintf@1.3.0:
   version "1.3.0"
   resolved "https://registry.npmmirror.com/extsprintf/-/extsprintf-1.3.0.tgz#96918440e3041a7a414f8c52e3c574eb3c3e1e05"
@@ -4173,6 +4213,13 @@ faye-websocket@^0.11.3, faye-websocket@^0.11.4:
   dependencies:
     websocket-driver ">=0.5.1"
 
+fd-slicer@~1.1.0:
+  version "1.1.0"
+  resolved "https://registry.npmmirror.com/fd-slicer/-/fd-slicer-1.1.0.tgz#25c7c89cb1f9077f8891bbe61d8f390eae256f1e"
+  integrity sha512-cE1qsB/VwyQozZ+q1dGxR8LBYNZeofhEdUNGSMbQD3Gw2lAzX9Zb3uIU6Ebc/Fmyjo9AWWfnn0AUCHqtevs/8g==
+  dependencies:
+    pend "~1.2.0"
+
 figgy-pudding@^3.5.1:
   version "3.5.2"
   resolved "https://registry.npmmirror.com/figgy-pudding/-/figgy-pudding-3.5.2.tgz#b4eee8148abb01dcf1d1ac34367d59e12fa61d6e"
@@ -4926,6 +4973,14 @@ https-browserify@^1.0.0:
   resolved "https://registry.npmmirror.com/https-browserify/-/https-browserify-1.0.0.tgz#ec06c10e0a34c0f2faf199f7fd7fc78fffd03c73"
   integrity sha512-J+FkSdyD+0mA0N+81tMotaRMfSL9SGi+xpD3T6YApKsc3bGSXJlfXri3VyFOeYkfLRQisDk1W+jIFFKBeUBbBg==
 
+https-proxy-agent@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.npmmirror.com/https-proxy-agent/-/https-proxy-agent-4.0.0.tgz#702b71fb5520a132a66de1f67541d9e62154d82b"
+  integrity sha512-zoDhWrkR3of1l9QAL8/scJZyLu8j/gBkcwcaQOZh7Gyh/+uJQzGVETdgT30akuwkpL8HTRfssqI3BZuV18teDg==
+  dependencies:
+    agent-base "5"
+    debug "4"
+
 iconv-lite@0.4.24:
   version "0.4.24"
   resolved "https://registry.npmmirror.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
@@ -6015,7 +6070,7 @@ mime-db@1.52.0, "mime-db@>= 1.43.0 < 2":
   resolved "https://registry.npmmirror.com/mime-db/-/mime-db-1.52.0.tgz#bbabcdc02859f4987301c856e3387ce5ec43bf70"
   integrity sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg==
 
-mime-types@^2.1.12, mime-types@~2.1.17, mime-types@~2.1.19, mime-types@~2.1.24, mime-types@~2.1.34:
+mime-types@^2.1.12, mime-types@^2.1.25, mime-types@~2.1.17, mime-types@~2.1.19, mime-types@~2.1.24, mime-types@~2.1.34:
   version "2.1.35"
   resolved "https://registry.npmmirror.com/mime-types/-/mime-types-2.1.35.tgz#381a871b62a734450660ae3deee44813f70d959a"
   integrity sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==
@@ -6105,7 +6160,7 @@ mkdirp@0.3.0:
   resolved "https://registry.npmmirror.com/mkdirp/-/mkdirp-0.3.0.tgz#1bbf5ab1ba827af23575143490426455f481fe1e"
   integrity sha512-OHsdUcVAQ6pOtg5JYWpCBo9W/GySVuwvP9hueRMW7UqshC0tbfzLv8wjySTPm3tfUZ/21CE9E1pJagOA91Pxew==
 
-mkdirp@^0.5.1, mkdirp@^0.5.3, mkdirp@^0.5.6, mkdirp@~0.5.1:
+mkdirp@^0.5.1, mkdirp@^0.5.3, mkdirp@^0.5.4, mkdirp@^0.5.6, mkdirp@~0.5.1:
   version "0.5.6"
   resolved "https://registry.npmmirror.com/mkdirp/-/mkdirp-0.5.6.tgz#7def03d2432dcae4ba1d611445c48396062255f6"
   integrity sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==
@@ -6434,6 +6489,14 @@ opencollective-postinstall@^2.0.2:
   resolved "https://registry.npmmirror.com/opencollective-postinstall/-/opencollective-postinstall-2.0.3.tgz#7a0fff978f6dbfa4d006238fbac98ed4198c3259"
   integrity sha512-8AV/sCtuzUeTo8gQK5qDZzARrulB3egtLzFgteqB2tcT4Mw7B8Kt7JcDHmltjz6FOAHsvTevk70gZEbhM4ZS9Q==
 
+opentype.js@^1.3.3:
+  version "1.3.4"
+  resolved "https://registry.npmmirror.com/opentype.js/-/opentype.js-1.3.4.tgz#1c0e72e46288473cc4a4c6a2dc60fd7fe6020d77"
+  integrity sha512-d2JE9RP/6uagpQAVtJoF0pJJA/fgai89Cc50Yp0EJHk+eLp6QQ7gBoblsnubRULNY132I0J1QKMJ+JTbMqz4sw==
+  dependencies:
+    string.prototype.codepointat "^0.2.1"
+    tiny-inflate "^1.0.3"
+
 opn@^5.5.0:
   version "5.5.0"
   resolved "https://registry.npmmirror.com/opn/-/opn-5.5.0.tgz#fc7164fab56d235904c51c3b27da6758ca3b9bfc"
@@ -6538,6 +6601,16 @@ package-json@^6.3.0:
     registry-url "^5.0.0"
     semver "^6.2.0"
 
+pako@^0.2.5:
+  version "0.2.9"
+  resolved "https://registry.npmmirror.com/pako/-/pako-0.2.9.tgz#f3f7522f4ef782348da8161bad9ecfd51bf83a75"
+  integrity sha512-NUcwaKxUxWrZLpDG+z/xZaCgQITkA/Dv4V/T6bw7VON6l1Xz/VnrBqrYjZQ12TamKHzITTfOEIYUj48y2KXImA==
+
+pako@^2.0.3:
+  version "2.1.0"
+  resolved "https://registry.npmmirror.com/pako/-/pako-2.1.0.tgz#266cc37f98c7d883545d11335c00fbd4062c9a86"
+  integrity sha512-w+eufiZ1WuJYgPXbV/PO3NCMEc3xqylkKHzp8bxp1uW4qaSNQUkwmLLEc3kKsfz8lpV1F8Ht3U1Cm+9Srog2ug==
+
 pako@~1.0.5:
   version "1.0.11"
   resolved "https://registry.npmmirror.com/pako/-/pako-1.0.11.tgz#6c9599d340d54dfd3946380252a35705a6b992bf"
@@ -6663,6 +6736,23 @@ pbkdf2@^3.0.3:
     safe-buffer "^5.0.1"
     sha.js "^2.4.8"
 
+pdfjs@^2.3.5:
+  version "2.5.3"
+  resolved "https://registry.npmmirror.com/pdfjs/-/pdfjs-2.5.3.tgz#45d31a90b71a655edfa81819f488203f743959d2"
+  integrity sha512-XSFh7/znM7gJAVABFvrtIkxi6TcHyHUCYpwaRUv1h0ln2ZQel0s8nKgsvmo+D7IKkkXKEQNtMU/hdmF/MUeaHg==
+  dependencies:
+    "@rkusa/linebreak" "^1.0.0"
+    opentype.js "^1.3.3"
+    pako "^2.0.3"
+    readable-stream "^3.6.0"
+    unorm "^1.6.0"
+    uuid "^8.3.1"
+
+pend@~1.2.0:
+  version "1.2.0"
+  resolved "https://registry.npmmirror.com/pend/-/pend-1.2.0.tgz#7a57eb550a6783f9115331fcf4663d5c8e007a50"
+  integrity sha512-F3asv42UuXchdzt+xXqfW1OGlVBe+mxa2mqI0pg5yAHZPvFmY3Y6drSf/GQ1A86WgWEN9Kzh/WrgKa6iGcHXLg==
+
 performance-now@^2.1.0:
   version "2.1.0"
   resolved "https://registry.npmmirror.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
@@ -7128,6 +7218,11 @@ process@^0.11.10:
   resolved "https://registry.npmmirror.com/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
   integrity sha512-cdGef/drWFoydD1JsMzuFf8100nZl+GT+yacc2bEced5f9Rjk4z+WtFUTBu9PhOi9j/jfmBPu0mMEY4wIdAF8A==
 
+progress@^2.0.1:
+  version "2.0.3"
+  resolved "https://registry.npmmirror.com/progress/-/progress-2.0.3.tgz#7e8cf8d8f5b8f239c1bc68beb4eb78567d572ef8"
+  integrity sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==
+
 promise-inflight@^1.0.1:
   version "1.0.1"
   resolved "https://registry.npmmirror.com/promise-inflight/-/promise-inflight-1.0.1.tgz#98472870bf228132fcbdd868129bad12c3c029e3"
@@ -7141,6 +7236,11 @@ proxy-addr@~2.0.7:
     forwarded "0.2.0"
     ipaddr.js "1.9.1"
 
+proxy-from-env@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.npmmirror.com/proxy-from-env/-/proxy-from-env-1.1.0.tgz#e102f16ca355424865755d2c9e8ea4f24d58c3e2"
+  integrity sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==
+
 prr@~1.0.1:
   version "1.0.1"
   resolved "https://registry.npmmirror.com/prr/-/prr-1.0.1.tgz#d3fc114ba06995a45ec6893f484ceb1d78f5f476"
@@ -7210,6 +7310,22 @@ pupa@^2.0.1:
   dependencies:
     escape-goat "^2.0.0"
 
+puppeteer@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.npmmirror.com/puppeteer/-/puppeteer-2.1.1.tgz#ccde47c2a688f131883b50f2d697bd25189da27e"
+  integrity sha512-LWzaDVQkk1EPiuYeTOj+CZRIjda4k2s5w4MK4xoH2+kgWV/SDlkYHmxatDdtYrciHUKSXTsGgPgPP8ILVdBsxg==
+  dependencies:
+    "@types/mime-types" "^2.1.0"
+    debug "^4.1.0"
+    extract-zip "^1.6.6"
+    https-proxy-agent "^4.0.0"
+    mime "^2.0.3"
+    mime-types "^2.1.25"
+    progress "^2.0.1"
+    proxy-from-env "^1.0.0"
+    rimraf "^2.6.1"
+    ws "^6.1.0"
+
 q@^1.1.2:
   version "1.5.1"
   resolved "https://registry.npmmirror.com/q/-/q-1.5.1.tgz#7e32f75b41381291d04611f1bf14109ac00651d7"
@@ -7557,7 +7673,7 @@ rgba-regex@^1.0.0:
   resolved "https://registry.npmmirror.com/rgba-regex/-/rgba-regex-1.0.0.tgz#43374e2e2ca0968b0ef1523460b7d730ff22eeb3"
   integrity sha512-zgn5OjNQXLUTdq8m17KdaicF6w89TZs8ZU8y0AYENIU6wG8GG6LLm0yLSiPY8DmaYmHdgRW8rnApjoT0fQRfMg==
 
-rimraf@^2.5.4, rimraf@^2.6.3:
+rimraf@^2.5.4, rimraf@^2.6.1, rimraf@^2.6.3:
   version "2.7.1"
   resolved "https://registry.npmmirror.com/rimraf/-/rimraf-2.7.1.tgz#35797f13a7fdadc566142c29d4f07ccad483e3ec"
   integrity sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==
@@ -8138,6 +8254,11 @@ string-width@^4.0.0, string-width@^4.1.0:
     is-fullwidth-code-point "^3.0.0"
     strip-ansi "^6.0.1"
 
+string.prototype.codepointat@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.npmmirror.com/string.prototype.codepointat/-/string.prototype.codepointat-0.2.1.tgz#004ad44c8afc727527b108cd462b4d971cd469bc"
+  integrity sha512-2cBVCj6I4IOvEnjgO/hWqXjqBGsY+zwPmHl12Srk9IXSZ56Jwwmy+66XO5Iut/oQVR7t5ihYdLB0GMa4alEUcg==
+
 string.prototype.trim@^1.2.8:
   version "1.2.8"
   resolved "https://registry.npmmirror.com/string.prototype.trim/-/string.prototype.trim-1.2.8.tgz#f9ac6f8af4bd55ddfa8895e6aea92a96395393bd"
@@ -8376,6 +8497,11 @@ timsort@^0.3.0:
   resolved "https://registry.npmmirror.com/timsort/-/timsort-0.3.0.tgz#405411a8e7e6339fe64db9a234de11dc31e02bd4"
   integrity sha512-qsdtZH+vMoCARQtyod4imc2nIJwg9Cc7lPRrw9CzF8ZKR0khdr8+2nX80PBhET3tcyTtJDxAffGh2rXH4tyU8A==
 
+tiny-inflate@^1.0.0, tiny-inflate@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.npmmirror.com/tiny-inflate/-/tiny-inflate-1.0.3.tgz#122715494913a1805166aaf7c93467933eea26c4"
+  integrity sha512-pkY1fj1cKHb2seWDy0B16HeWyczlJA9/WW3u3c4z/NiWDsO3DOU5D7nhTLE9CF0yXv/QZFY7sEJmj24dK+Rrqw==
+
 to-arraybuffer@^1.0.0:
   version "1.0.1"
   resolved "https://registry.npmmirror.com/to-arraybuffer/-/to-arraybuffer-1.0.1.tgz#7d229b1fcc637e466ca081180836a7aabff83f43"
@@ -8607,6 +8733,14 @@ unicode-property-aliases-ecmascript@^2.0.0:
   resolved "https://registry.npmmirror.com/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-2.1.0.tgz#43d41e3be698bd493ef911077c9b131f827e8ccd"
   integrity sha512-6t3foTQI9qne+OZoVQB/8x8rk2k1eVy1gRXhV3oFQ5T6R1dqQ1xtin3XqSlx3+ATBkliTaR/hHyJBm+LVPNM8w==
 
+unicode-trie@^0.3.0:
+  version "0.3.1"
+  resolved "https://registry.npmmirror.com/unicode-trie/-/unicode-trie-0.3.1.tgz#d671dddd89101a08bac37b6a5161010602052085"
+  integrity sha512-WgVuO0M2jDl7hVfbPgXv2LUrD81HM0bQj/bvLGiw6fJ4Zo8nNFnDrA0/hU2Te/wz6pjxCm5cxJwtLjo2eyV51Q==
+  dependencies:
+    pako "^0.2.5"
+    tiny-inflate "^1.0.0"
+
 union-value@^1.0.0:
   version "1.0.1"
   resolved "https://registry.npmmirror.com/union-value/-/union-value-1.0.1.tgz#0b6fe7b835aecda61c6ea4d4f02c14221e109847"
@@ -8653,6 +8787,11 @@ universalify@^0.1.0:
   resolved "https://registry.npmmirror.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
   integrity sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==
 
+unorm@^1.6.0:
+  version "1.6.0"
+  resolved "https://registry.npmmirror.com/unorm/-/unorm-1.6.0.tgz#029b289661fba714f1a9af439eb51d9b16c205af"
+  integrity sha512-b2/KCUlYZUeA7JFUuRJZPUtr4gZvBh7tavtv4fvk4+KV9pfGiR6CQAQAWl49ZpR3ts2dk4FYkP7EIgDJoiOLDA==
+
 unpipe@1.0.0, unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.npmmirror.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
@@ -8809,7 +8948,7 @@ uuid@^3.3.2:
   resolved "https://registry.npmmirror.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
   integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
 
-uuid@^8.3.2:
+uuid@^8.3.1, uuid@^8.3.2:
   version "8.3.2"
   resolved "https://registry.npmmirror.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
   integrity sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==
@@ -9237,7 +9376,7 @@ write-file-atomic@^3.0.0:
     signal-exit "^3.0.2"
     typedarray-to-buffer "^3.1.5"
 
-ws@^6.2.1:
+ws@^6.1.0, ws@^6.2.1:
   version "6.2.2"
   resolved "https://registry.npmmirror.com/ws/-/ws-6.2.2.tgz#dd5cdbd57a9979916097652d78f1cc5faea0c32e"
   integrity sha512-zmhltoSR8u1cnDsD43TX59mzoMZsLKqUweyYBAIvTngR3shc0W6aOZylZmq/7hqyVxPdi+5Ud2QInblgyE72fw==
@@ -9298,6 +9437,14 @@ yargs@^13.3.2:
     y18n "^4.0.0"
     yargs-parser "^13.1.2"
 
+yauzl@^2.10.0:
+  version "2.10.0"
+  resolved "https://registry.npmmirror.com/yauzl/-/yauzl-2.10.0.tgz#c7eb17c93e112cb1086fa6d8e51fb0667b79a5f9"
+  integrity sha512-p4a9I6X6nu6IhoGmBqAcbJy1mlC4j27vEPZX9F4L4/vZT3Lyq1VkFHw/V/PUcB9Buo+DG3iHkT0x3Qya58zc3g==
+  dependencies:
+    buffer-crc32 "~0.2.3"
+    fd-slicer "~1.1.0"
+
 yocto-queue@^0.1.0:
   version "0.1.0"
   resolved "https://registry.npmmirror.com/yocto-queue/-/yocto-queue-0.1.0.tgz#0294eb3dee05028d31ee1a5fa2c556a6aaf10a1b"