diff --git a/.eslintignore b/.eslintignore
index 41d132a329..bff77d5bf4 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -10,3 +10,4 @@ scripts
 packages/docusaurus-1.x/lib/core/metadata.js
 packages/docusaurus-1.x/lib/core/MetadataBlog.js
 packages/docusaurus-1.x/lib/core/__tests__/split-tab.test.js
+packages/docusaurus-utils/lib/
diff --git a/.gitignore b/.gitignore
index 633e2eb7cd..e9dc44e638 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,4 +11,6 @@ yarn-error.log
 build
 .docusaurus
 .cache-loader
+types
+packages/docusaurus-utils/lib/
 
diff --git a/.prettierignore b/.prettierignore
index 6b9e084ea3..e762e56673 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -2,3 +2,4 @@ dist
 node_modules
 build
 .docusaurus
+packages/docusaurus-utils/lib/
diff --git a/babel.config.js b/babel.config.js
index 2798f4892e..49dba51c32 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -16,6 +16,7 @@ module.exports = {
       },
     ],
     '@babel/react',
+    '@babel/preset-typescript',
   ],
   plugins: [
     '@babel/plugin-proposal-class-properties',
diff --git a/jest.config.js b/jest.config.js
index 8aa1e24ac0..d2efb0acaa 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -12,8 +12,12 @@ module.exports = {
   verbose: true,
   testURL: 'http://localhost/',
   testEnvironment: 'node',
-  testPathIgnorePatterns: ['/node_modules/', '__fixtures__'],
+  testPathIgnorePatterns: [
+    '/node_modules/',
+    '__fixtures__',
+    '/packages/.*/lib',
+  ],
   transform: {
-    '^.+\\.js$': 'babel-jest',
+    '^.+\\.[jt]sx?$': 'babel-jest',
   },
 };
diff --git a/package.json b/package.json
index 883201ff4c..dd6a31481b 100644
--- a/package.json
+++ b/package.json
@@ -6,14 +6,28 @@
     "website-1.x"
   ],
   "scripts": {
+    "start": "yarn tsc && yarn start:v2",
+    "start:v1": "yarn workspace docusaurus-1-website start",
+    "start:v2": "yarn workspace docusaurus-2-website start",
+    "build": "yarn tsc && yarn build:v2",
+    "build:v1": "yarn workspace docusaurus-1-website build",
+    "build:v2": "yarn workspace docusaurus-2-website build",
+    "postinstall": "yarn tsc",
     "prettier": "prettier --config .prettierrc --write \"**/*.js\"",
     "prettier:diff": "prettier --config .prettierrc --list-different \"**/*.js\"",
     "lint": "eslint --cache \"**/*.js\"",
     "lerna": "lerna",
-    "test": "jest"
+    "test": "jest",
+    "tsc": "lerna run --parallel tsc --no-private"
   },
   "devDependencies": {
     "@babel/core": "^7.4.4",
+    "@babel/preset-typescript": "^7.3.3",
+    "@types/escape-string-regexp": "^1.0.0",
+    "@types/fs-extra": "7.0.0",
+    "@types/jest": "^24.0.13",
+    "@types/lodash": "^4.14.129",
+    "@types/node": "^12.0.2",
     "babel-eslint": "8",
     "enzyme": "^3.9.0",
     "enzyme-adapter-react-16": "^1.12.1",
@@ -35,7 +49,8 @@
     "prettier": "^1.13.7",
     "react": "^16.8.4",
     "react-dom": "^16.8.4",
-    "rimraf": "^2.6.3"
+    "rimraf": "^2.6.3",
+    "typescript": "^3.4.5"
   },
   "lint-staged": {
     "linters": {
diff --git a/packages/docusaurus-utils/package.json b/packages/docusaurus-utils/package.json
index 4fcfa68803..d00e14b1dd 100644
--- a/packages/docusaurus-utils/package.json
+++ b/packages/docusaurus-utils/package.json
@@ -2,7 +2,11 @@
   "name": "@docusaurus/utils",
   "version": "2.0.0-alpha.16",
   "description": "Node utility functions for Docusaurus packages",
-  "main": "src/index.js",
+  "main": "./lib/index.js",
+  "types": "./lib/index.d.ts",
+  "scripts": {
+    "tsc": "tsc"
+  },
   "publishConfig": {
     "access": "public"
   },
diff --git a/packages/docusaurus-utils/src/__tests__/index.test.js b/packages/docusaurus-utils/src/__tests__/index.test.ts
similarity index 94%
rename from packages/docusaurus-utils/src/__tests__/index.test.js
rename to packages/docusaurus-utils/src/__tests__/index.test.ts
index 193709b63e..464b6587bc 100644
--- a/packages/docusaurus-utils/src/__tests__/index.test.js
+++ b/packages/docusaurus-utils/src/__tests__/index.test.ts
@@ -81,7 +81,7 @@ describe('load utils', () => {
   });
 
   test('genChunkName', () => {
-    let asserts = {
+    const firstAssert = {
       '/docs/adding-blog': 'docs-adding-blog-062',
       '/docs/versioning': 'docs-versioning-8a8',
       '/': 'index',
@@ -91,8 +91,8 @@ describe('load utils', () => {
       '/users/en/': 'users-en-f7a',
       '/blog': 'blog-c06',
     };
-    Object.keys(asserts).forEach(str => {
-      expect(genChunkName(str)).toBe(asserts[str]);
+    Object.keys(firstAssert).forEach(str => {
+      expect(genChunkName(str)).toBe(firstAssert[str]);
     });
 
     // Don't allow different chunk name for same path.
@@ -101,12 +101,12 @@ describe('load utils', () => {
     );
 
     // Even with same preferred name, still different chunk name for different path
-    asserts = {
+    const secondAssert = {
       '/blog/1': 'blog-85-f-089',
       '/blog/2': 'blog-353-489',
     };
-    Object.keys(asserts).forEach(str => {
-      expect(genChunkName(str, undefined, 'blog')).toBe(asserts[str]);
+    Object.keys(secondAssert).forEach(str => {
+      expect(genChunkName(str, undefined, 'blog')).toBe(secondAssert[str]);
     });
   });
 
@@ -136,7 +136,7 @@ describe('load utils', () => {
     };
     const test = {arr: [1, 2, 3]};
     const variable = 'enabledLanguages';
-    expect(idx(a, [('b', 'c')])).toBeUndefined();
+    expect(idx(a, ['b', 'c'])).toBeUndefined();
     expect(idx(b, ['hello'])).toEqual('world');
     expect(idx(b, 'hello')).toEqual('world');
     expect(idx(obj, 'typo')).toBeUndefined();
diff --git a/packages/docusaurus-utils/src/index.js b/packages/docusaurus-utils/src/index.ts
similarity index 73%
rename from packages/docusaurus-utils/src/index.js
rename to packages/docusaurus-utils/src/index.ts
index 0b85f4bcc3..099bdb7a5f 100644
--- a/packages/docusaurus-utils/src/index.js
+++ b/packages/docusaurus-utils/src/index.ts
@@ -5,22 +5,19 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-const path = require('path');
-const matter = require('gray-matter');
-const {createHash} = require('crypto');
-
-const _ = require(`lodash`);
-const escapeStringRegexp = require('escape-string-regexp');
-const fs = require('fs-extra');
+import path from 'path';
+import matter from 'gray-matter';
+import {createHash} from 'crypto';
+import _ from 'lodash';
+import escapeStringRegexp from 'escape-string-regexp';
+import fs from 'fs-extra';
 
 const fileHash = new Map();
-/**
- * @param {string} generatedFilesDir
- * @param {string} file
- * @param {*} content
- * @returns {Promise<void>}
- */
-async function generate(generatedFilesDir, file, content) {
+export async function generate(
+  generatedFilesDir: string,
+  file: string,
+  content: any,
+): Promise<void> {
   const filepath = path.join(generatedFilesDir, file);
   const lastHash = fileHash.get(filepath);
   const currentHash = createHash('md5')
@@ -38,21 +35,16 @@ const indexRE = /(^|.*\/)index\.(md|js)$/i;
 const extRE = /\.(md|js)$/;
 
 /**
- * @param {string} file
- * @returns {string}
+ * Convert filepath to url path. Example: 'index.md' -> '/', 'foo/bar.js' -> '/foo/bar',
  */
-function fileToPath(file) {
+export function fileToPath(file: string): string {
   if (indexRE.test(file)) {
     return file.replace(indexRE, '/$1');
   }
   return `/${file.replace(extRE, '').replace(/\\/g, '/')}`;
 }
 
-/**
- * @param {string} userpath
- * @returns {string}
- */
-function encodePath(userpath) {
+export function encodePath(userpath: string): string {
   return userpath
     .split('/')
     .map(item => encodeURIComponent(item))
@@ -61,10 +53,8 @@ function encodePath(userpath) {
 
 /**
  * Given an input string, convert to kebab-case and append a hash. Avoid str collision
- * @param {string} str input string
- * @returns {string}
  */
-function docuHash(str) {
+export function docuHash(str: string): string {
   if (str === '/') {
     return 'index';
   }
@@ -77,10 +67,8 @@ function docuHash(str) {
 
 /**
  * Generate unique React Component Name. E.g: /foo-bar -> FooBar096
- * @param {string} pagePath
- * @returns {string} unique react component name
  */
-function genComponentName(pagePath) {
+export function genComponentName(pagePath: string): string {
   if (pagePath === '/') {
     return 'index';
   }
@@ -94,10 +82,8 @@ function genComponentName(pagePath) {
 
 /**
  * Convert Windows backslash paths to posix style paths. E.g: endi\\lie -> endi/lie
- * @param {string} str windows backslash paths
- * @returns {string} posix-style path
  */
-function posixPath(str) {
+export function posixPath(str: string): string {
   const isExtendedLengthPath = /^\\\\\?\\/.test(str);
   const hasNonAscii = /[^\u0000-\u0080]+/.test(str); // eslint-disable-line
 
@@ -110,12 +96,12 @@ function posixPath(str) {
 const chunkNameCache = new Map();
 /**
  * Generate unique chunk name given a module path
- * @param {string} modulePath
- * @param {string=} prefix
- * @param {string=} preferredName
- * @returns {string}
  */
-function genChunkName(modulePath, prefix, preferredName) {
+export function genChunkName(
+  modulePath: string,
+  prefix?: string,
+  preferredName?: string,
+): string {
   let chunkName = chunkNameCache.get(modulePath);
   if (!chunkName) {
     let str = modulePath;
@@ -132,14 +118,11 @@ function genChunkName(modulePath, prefix, preferredName) {
   }
   return chunkName;
 }
-/**
- * @param {*} target
- * @param {string|string[]} keyPaths
- * @returns {*}
- */
-function idx(target, keyPaths) {
+
+export function idx(target: any, keyPaths?: string | (string | number)[]): any {
   return (
     target &&
+    keyPaths &&
     (Array.isArray(keyPaths)
       ? keyPaths.reduce((obj, key) => obj && obj[key], target)
       : target[keyPaths])
@@ -147,11 +130,9 @@ function idx(target, keyPaths) {
 }
 
 /**
- * @param {string} file
- * @param {string} refDir
- * @returns {string}
+ * Given a filepath and dirpath, get the first directory
  */
-function getSubFolder(file, refDir) {
+export function getSubFolder(file: string, refDir: string): string | null {
   const separator = escapeStringRegexp(path.sep);
   const baseDir = escapeStringRegexp(path.basename(refDir));
   const regexSubFolder = new RegExp(
@@ -161,28 +142,28 @@ function getSubFolder(file, refDir) {
   return match && match[1];
 }
 
-/**
- * @param {string} fileString
- * @returns {Object}
- */
-function parse(fileString) {
-  const {data: frontMatter, content, excerpt} = matter(fileString, {
-    excerpt(file) {
-      // eslint-disable-next-line no-param-reassign
+export function parse(
+  fileString: string,
+): {
+  frontMatter: {
+    [key: string]: any,
+  },
+  content: string,
+  excerpt: string | undefined,
+} {
+  const options: {} = {
+    excerpt: (file: matter.GrayMatterFile<string>): void => {
       file.excerpt = file.content
         .trim()
         .split('\n', 1)
         .shift();
     },
-  });
+  };
+  const {data: frontMatter, content, excerpt} = matter(fileString, options);
   return {frontMatter, content, excerpt};
 }
 
-/**
- * @param {string[]} rawUrls
- * @returns {string}
- */
-function normalizeUrl(rawUrls) {
+export function normalizeUrl(rawUrls: string[]): string {
   const urls = rawUrls;
   const resultArray = [];
 
@@ -242,17 +223,3 @@ function normalizeUrl(rawUrls) {
 
   return str;
 }
-
-module.exports = {
-  encodePath,
-  docuHash,
-  generate,
-  fileToPath,
-  genComponentName,
-  genChunkName,
-  getSubFolder,
-  idx,
-  normalizeUrl,
-  parse,
-  posixPath,
-};
diff --git a/packages/docusaurus-utils/tsconfig.json b/packages/docusaurus-utils/tsconfig.json
new file mode 100644
index 0000000000..e8a156c7c6
--- /dev/null
+++ b/packages/docusaurus-utils/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib",
+  }
+}
diff --git a/packages/docusaurus/package.json b/packages/docusaurus/package.json
index 80eb736909..4690b646a0 100644
--- a/packages/docusaurus/package.json
+++ b/packages/docusaurus/package.json
@@ -70,7 +70,7 @@
     "wait-on": "endiliey/wait-on#master",
     "webpack": "^4.30.0",
     "webpack-bundle-analyzer": "^3.1.0",
-    "webpack-dev-server": "^3.2.1",
+    "webpack-dev-server": "^3.4.1",
     "webpack-merge": "^4.1.4",
     "webpack-nicelog": "^2.3.1"
   },
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000000..13e74202f8
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,37 @@
+{
+  "compilerOptions": {
+    "target": "es6",
+    "module": "commonjs",
+    "lib": ["es6"],
+    "declaration": true,
+
+    /* Strict Type-Checking Options */
+    "strict": true,
+    "noImplicitAny": true,
+    "strictNullChecks": true,
+    "strictFunctionTypes": true,
+    "strictBindCallApply": true,
+    "strictPropertyInitialization": true,
+    "noImplicitThis": true,
+    "alwaysStrict": true,
+
+    /* Additional Checks */
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+
+    /* Module Resolution Options */
+    "moduleResolution": "node",
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+ 
+    /* Advanced Options */
+    "resolveJsonModule": true
+  },
+  "exclude": [
+    "node_modules",
+    "**/__tests__/**/*",
+    "**/lib/**/*",
+  ]
+}
diff --git a/yarn.lock b/yarn.lock
index 58ef816d2b..42a669aa53 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -380,6 +380,13 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
 
+"@babel/plugin-syntax-typescript@^7.2.0":
+  version "7.3.3"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-typescript/-/plugin-syntax-typescript-7.3.3.tgz#a7cc3f66119a9f7ebe2de5383cce193473d65991"
+  integrity sha512-dGwbSMA1YhVS8+31CnPR7LB4pcbrzcV99wQzby4uAfrkZPYZlQ7ImwdpzLqi6Z6IL02b8IAL379CaMwo0x5Lag==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+
 "@babel/plugin-transform-arrow-functions@^7.2.0":
   version "7.2.0"
   resolved "https://registry.yarnpkg.com/@babel/plugin-transform-arrow-functions/-/plugin-transform-arrow-functions-7.2.0.tgz#9aeafbe4d6ffc6563bf8f8372091628f00779550"
@@ -646,6 +653,14 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
 
+"@babel/plugin-transform-typescript@^7.3.2":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-typescript/-/plugin-transform-typescript-7.4.4.tgz#93e9c3f2a546e6d3da1e9cc990e30791b807aa9f"
+  integrity sha512-rwDvjaMTx09WC0rXGBRlYSSkEHOKRrecY6hEr3SVIPKII8DVWXtapNAfAyMC0dovuO+zYArcAuKeu3q9DNRfzA==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-syntax-typescript" "^7.2.0"
+
 "@babel/plugin-transform-unicode-regex@^7.4.4":
   version "7.4.4"
   resolved "https://registry.yarnpkg.com/@babel/plugin-transform-unicode-regex/-/plugin-transform-unicode-regex-7.4.4.tgz#ab4634bb4f14d36728bf5978322b35587787970f"
@@ -728,6 +743,14 @@
     "@babel/plugin-transform-react-jsx-self" "^7.0.0"
     "@babel/plugin-transform-react-jsx-source" "^7.0.0"
 
+"@babel/preset-typescript@^7.3.3":
+  version "7.3.3"
+  resolved "https://registry.yarnpkg.com/@babel/preset-typescript/-/preset-typescript-7.3.3.tgz#88669911053fa16b2b276ea2ede2ca603b3f307a"
+  integrity sha512-mzMVuIP4lqtn4du2ynEfdO0+RYcslwrZiJHXu4MGaC1ctJiW2fyaeDrtjJGs7R/KebZ1sgowcIoWf4uRpEfKEg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-transform-typescript" "^7.3.2"
+
 "@babel/register@^7.0.0":
   version "7.4.4"
   resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.4.4.tgz#370a68ba36f08f015a8b35d4864176c6b65d7a23"
@@ -1807,11 +1830,23 @@
   dependencies:
     "@types/node" "*"
 
+"@types/escape-string-regexp@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@types/escape-string-regexp/-/escape-string-regexp-1.0.0.tgz#052d16d87db583b72daceae4eaabddb66954424c"
+  integrity sha512-KAruqgk9/340M4MYYasdBET+lyYN8KMXUuRKWO72f4SbmIMMFp9nnJiXUkJS0HC2SFe4x0R/fLozXIzqoUfSjA==
+
 "@types/events@*":
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/@types/events/-/events-3.0.0.tgz#2862f3f58a9a7f7c3e78d79f130dd4d71c25c2a7"
   integrity sha512-EaObqwIvayI5a8dCzhFrjKzVwKLxjoG9T6Ppd5CEo07LRKfQ8Yokw54r5+Wq7FaBQ+yXRvQAYPrHwya1/UFt9g==
 
+"@types/fs-extra@7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@types/fs-extra/-/fs-extra-7.0.0.tgz#9c4ad9e1339e7448a76698829def1f159c1b636c"
+  integrity sha512-ndoMMbGyuToTy4qB6Lex/inR98nPiNHacsgMPvy+zqMLgSxbt8VtWpDArpGp69h1fEDQHn1KB+9DWD++wgbwYA==
+  dependencies:
+    "@types/node" "*"
+
 "@types/glob@*", "@types/glob@^7.1.1":
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/@types/glob/-/glob-7.1.1.tgz#aa59a1c6e3fbc421e07ccd31a944c30eba521575"
@@ -1841,6 +1876,23 @@
     "@types/istanbul-lib-coverage" "*"
     "@types/istanbul-lib-report" "*"
 
+"@types/jest-diff@*":
+  version "20.0.1"
+  resolved "https://registry.yarnpkg.com/@types/jest-diff/-/jest-diff-20.0.1.tgz#35cc15b9c4f30a18ef21852e255fdb02f6d59b89"
+  integrity sha512-yALhelO3i0hqZwhjtcr6dYyaLoCHbAMshwtj6cGxTvHZAKXHsYGdff6E8EPw3xLKY0ELUTQ69Q1rQiJENnccMA==
+
+"@types/jest@^24.0.13":
+  version "24.0.13"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.13.tgz#10f50b64cb05fb02411fbba49e9042a3a11da3f9"
+  integrity sha512-3m6RPnO35r7Dg+uMLj1+xfZaOgIHHHut61djNjzwExXN4/Pm9has9C6I1KMYSfz7mahDhWUOVg4HW/nZdv5Pww==
+  dependencies:
+    "@types/jest-diff" "*"
+
+"@types/lodash@^4.14.129":
+  version "4.14.129"
+  resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.129.tgz#9aaca391db126802482655c48dd79a814488202f"
+  integrity sha512-oYaV0eSlnOacOr7i4X1FFdH8ttSlb57gu3I9MuStIv2CYkISEY84dNHYsC3bF6sNH7qYcu1BtVrCtQ8Q4KPTfQ==
+
 "@types/minimatch@*":
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
@@ -1851,6 +1903,11 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.0.0.tgz#d11813b9c0ff8aaca29f04cbc12817f4c7d656e5"
   integrity sha512-Jrb/x3HT4PTJp6a4avhmJCDEVrPdqLfl3e8GGMbpkGGdwAV5UGlIs4vVEfsHHfylZVOKZWpOqmqFH8CbfOZ6kg==
 
+"@types/node@^12.0.2":
+  version "12.0.2"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.0.2.tgz#3452a24edf9fea138b48fad4a0a028a683da1e40"
+  integrity sha512-5tabW/i+9mhrfEOUcLDu2xBPsHJ+X5Orqy9FKpale3SjDA17j5AEpYq5vfy3oAeAHGcvANRCO3NV3d2D6q3NiA==
+
 "@types/q@^1.5.1":
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/@types/q/-/q-1.5.2.tgz#690a1475b84f2a884fd07cd797c00f5f31356ea8"
@@ -2062,7 +2119,7 @@ abbrev@1:
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
   integrity sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
 
-accepts@~1.3.4, accepts@~1.3.5:
+accepts@~1.3.4, accepts@~1.3.5, accepts@~1.3.7:
   version "1.3.7"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.7.tgz#531bc726517a3b2b41f850021c6cc15eaab507cd"
   integrity sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==
@@ -2853,6 +2910,22 @@ body-parser@1.18.3:
     raw-body "2.3.3"
     type-is "~1.6.16"
 
+body-parser@1.19.0:
+  version "1.19.0"
+  resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.19.0.tgz#96b2709e57c9c4e09a6fd66a8fd979844f69f08a"
+  integrity sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==
+  dependencies:
+    bytes "3.1.0"
+    content-type "~1.0.4"
+    debug "2.6.9"
+    depd "~1.1.2"
+    http-errors "1.7.2"
+    iconv-lite "0.4.24"
+    on-finished "~2.3.0"
+    qs "6.7.0"
+    raw-body "2.4.0"
+    type-is "~1.6.17"
+
 body@^5.1.0:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/body/-/body-5.1.0.tgz#e4ba0ce410a46936323367609ecb4e6553125069"
@@ -3110,6 +3183,11 @@ bytes@3.0.0:
   resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.0.0.tgz#d32815404d689699f85a4ea4fa8755dd13a96048"
   integrity sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg=
 
+bytes@3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.1.0.tgz#f6cf7933a360e0588fa9fde85651cdc7f805d1f6"
+  integrity sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==
+
 cacache@^11.0.1, cacache@^11.0.2, cacache@^11.3.2:
   version "11.3.2"
   resolved "https://registry.yarnpkg.com/cacache/-/cacache-11.3.2.tgz#2d81e308e3d258ca38125b676b98b2ac9ce69bfa"
@@ -3410,7 +3488,7 @@ cheerio@^1.0.0-rc.2:
     lodash "^4.15.0"
     parse5 "^3.0.1"
 
-chokidar@^2.0.2, chokidar@^2.0.4, chokidar@^2.1.5:
+chokidar@^2.0.2, chokidar@^2.0.4:
   version "2.1.5"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-2.1.5.tgz#0ae8434d962281a5f56c72869e79cb6d9d86ad4d"
   integrity sha512-i0TprVWp+Kj4WRPtInjexJ8Q+BqTE909VpH8xVhXrJkoc5QC8VO9TryGOqTr+2hljzc1sC62t22h5tZePodM/A==
@@ -3429,6 +3507,25 @@ chokidar@^2.0.2, chokidar@^2.0.4, chokidar@^2.1.5:
   optionalDependencies:
     fsevents "^1.2.7"
 
+chokidar@^2.1.6:
+  version "2.1.6"
+  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-2.1.6.tgz#b6cad653a929e244ce8a834244164d241fa954c5"
+  integrity sha512-V2jUo67OKkc6ySiRpJrjlpJKl9kDuG+Xb8VgsGzb+aEouhgS1D0weyPU4lEzdAcsCAvrih2J2BqyXqHWvVLw5g==
+  dependencies:
+    anymatch "^2.0.0"
+    async-each "^1.0.1"
+    braces "^2.3.2"
+    glob-parent "^3.1.0"
+    inherits "^2.0.3"
+    is-binary-path "^1.0.0"
+    is-glob "^4.0.0"
+    normalize-path "^3.0.0"
+    path-is-absolute "^1.0.0"
+    readdirp "^2.2.1"
+    upath "^1.1.1"
+  optionalDependencies:
+    fsevents "^1.2.7"
+
 chokidar@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.0.0.tgz#6b538f0fd6d5d31d5dd2b59e05426bec0f49aa40"
@@ -3849,7 +3946,7 @@ content-disposition@0.5.2:
   resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.2.tgz#0cf68bb9ddf5f2be7961c3a85178cb85dba78cb4"
   integrity sha1-DPaLud318r55YcOoUXjLhdunjLQ=
 
-content-disposition@^0.5.2:
+content-disposition@0.5.3, content-disposition@^0.5.2:
   version "0.5.3"
   resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.3.tgz#e130caf7e7279087c5616c2007d0485698984fbd"
   integrity sha512-ExO0774ikEObIAEV9kDo50o+79VCUdEB6n6lzKgGwupcVeRlhrj3qGAfwq8G6uBJjkqLrhT0qEYFcWng8z1z0g==
@@ -3966,6 +4063,11 @@ cookie@0.3.1:
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
   integrity sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s=
 
+cookie@0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.0.tgz#beb437e7022b3b6d49019d088665303ebe9c14ba"
+  integrity sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg==
+
 copy-concurrently@^1.0.0:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/copy-concurrently/-/copy-concurrently-1.0.5.tgz#92297398cae34937fcafd6ec8139c18051f0b5e0"
@@ -4526,7 +4628,7 @@ defined@^1.0.0:
   resolved "https://registry.yarnpkg.com/defined/-/defined-1.0.0.tgz#c98d9bcef75674188e110969151199e39b1fa693"
   integrity sha1-yY2bzvdWdBiOEQlpFRGZ45sfppM=
 
-del@^4.0.0, del@^4.1.0:
+del@^4.0.0, del@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/del/-/del-4.1.1.tgz#9e8f117222ea44a31ff3a156c049b99052a9f0b4"
   integrity sha512-QwGuEUouP2kVwQenAsOof5Fv8K9t3D8Ca8NxcXKrIpEHjTXK5J2nXLdP+ALI1cgv8wj7KuwBhTwBkOZSJKM5XQ==
@@ -5508,6 +5610,42 @@ express@^4.15.3, express@^4.16.3, express@^4.16.4:
     utils-merge "1.0.1"
     vary "~1.1.2"
 
+express@^4.17.0:
+  version "4.17.0"
+  resolved "https://registry.yarnpkg.com/express/-/express-4.17.0.tgz#288af62228a73f4c8ea2990ba3b791bb87cd4438"
+  integrity sha512-1Z7/t3Z5ZnBG252gKUPyItc4xdeaA0X934ca2ewckAsVsw9EG71i++ZHZPYnus8g/s5Bty8IMpSVEuRkmwwPRQ==
+  dependencies:
+    accepts "~1.3.7"
+    array-flatten "1.1.1"
+    body-parser "1.19.0"
+    content-disposition "0.5.3"
+    content-type "~1.0.4"
+    cookie "0.4.0"
+    cookie-signature "1.0.6"
+    debug "2.6.9"
+    depd "~1.1.2"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    finalhandler "~1.1.2"
+    fresh "0.5.2"
+    merge-descriptors "1.0.1"
+    methods "~1.1.2"
+    on-finished "~2.3.0"
+    parseurl "~1.3.3"
+    path-to-regexp "0.1.7"
+    proxy-addr "~2.0.5"
+    qs "6.7.0"
+    range-parser "~1.2.1"
+    safe-buffer "5.1.2"
+    send "0.17.1"
+    serve-static "1.14.1"
+    setprototypeof "1.1.1"
+    statuses "~1.5.0"
+    type-is "~1.6.18"
+    utils-merge "1.0.1"
+    vary "~1.1.2"
+
 ext-list@^2.0.0:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/ext-list/-/ext-list-2.2.2.tgz#0b98e64ed82f5acf0f2931babf69212ef52ddd37"
@@ -5800,6 +5938,19 @@ finalhandler@1.1.1:
     statuses "~1.4.0"
     unpipe "~1.0.0"
 
+finalhandler@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/finalhandler/-/finalhandler-1.1.2.tgz#b7e7d000ffd11938d0fdb053506f6ebabe9f587d"
+  integrity sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==
+  dependencies:
+    debug "2.6.9"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    on-finished "~2.3.0"
+    parseurl "~1.3.3"
+    statuses "~1.5.0"
+    unpipe "~1.0.0"
+
 find-cache-dir@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/find-cache-dir/-/find-cache-dir-2.1.0.tgz#8d0f94cd13fe43c6c7c261a0d86115ca918c05f7"
@@ -6798,6 +6949,17 @@ http-errors@1.6.3, http-errors@~1.6.2, http-errors@~1.6.3:
     setprototypeof "1.1.0"
     statuses ">= 1.4.0 < 2"
 
+http-errors@1.7.2, http-errors@~1.7.2:
+  version "1.7.2"
+  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.2.tgz#4f5029cf13239f31036e5b2e55292bcfbcc85c8f"
+  integrity sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==
+  dependencies:
+    depd "~1.1.2"
+    inherits "2.0.3"
+    setprototypeof "1.1.1"
+    statuses ">= 1.5.0 < 2"
+    toidentifier "1.0.0"
+
 http-parser-js@>=0.4.0:
   version "0.5.0"
   resolved "https://registry.yarnpkg.com/http-parser-js/-/http-parser-js-0.5.0.tgz#d65edbede84349d0dc30320815a15d39cc3cbbd8"
@@ -7144,7 +7306,7 @@ inquirer@^6.2.0:
     strip-ansi "^5.1.0"
     through "^2.3.6"
 
-internal-ip@^4.2.0:
+internal-ip@^4.3.0:
   version "4.3.0"
   resolved "https://registry.yarnpkg.com/internal-ip/-/internal-ip-4.3.0.tgz#845452baad9d2ca3b69c635a137acb9a0dad0907"
   integrity sha512-S1zBo1D6zcsyuC6PMmY5+55YMILQ9av8lotMx447Bq6SAgo/sDK6y6uUKmuYhW7eacnIhFfsPmCNYdDzsnnDCg==
@@ -9112,10 +9274,15 @@ mime@1.4.1:
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.4.1.tgz#121f9ebc49e3766f311a76e1fa1c8003c4b03aa6"
   integrity sha512-KI1+qOZu5DcW6wayYHSzR/tXKCDC5Om4s1z2QJjDULzLcmf3DvzS7oluY4HCTrc+9FiKmWUgeNLg7W3uIQvxtQ==
 
-mime@^2.3.1:
-  version "2.4.2"
-  resolved "https://registry.yarnpkg.com/mime/-/mime-2.4.2.tgz#ce5229a5e99ffc313abac806b482c10e7ba6ac78"
-  integrity sha512-zJBfZDkwRu+j3Pdd2aHsR5GfH2jIWhmL1ZzBoc+X+3JEti2hbArWcyJ+1laC1D2/U/W1a/+Cegj0/OnEU2ybjg==
+mime@1.6.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
+  integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==
+
+mime@^2.4.2:
+  version "2.4.3"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-2.4.3.tgz#229687331e86f68924e6cb59e1cdd937f18275fe"
+  integrity sha512-QgrPRJfE+riq5TPZMcHZOtm8c6K/yYrMbKIoRfapfiGLxS8OTeIfRhUGW5LU7MlRa52KOAGCfUNruqLrIBvWZw==
 
 mimic-fn@^1.0.0:
   version "1.2.0"
@@ -9273,7 +9440,7 @@ ms@2.0.0:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
   integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
 
-ms@^2.0.0, ms@^2.1.1:
+ms@2.1.1, ms@^2.0.0, ms@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
   integrity sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==
@@ -10241,7 +10408,7 @@ parse5@^5.0.0:
   resolved "https://registry.yarnpkg.com/parse5/-/parse5-5.1.0.tgz#c59341c9723f414c452975564c7c00a68d58acd2"
   integrity sha512-fxNG2sQjHvlVAYmzBZS9YlDp6PTSSDwa98vkD4QgVDDCAo84z5X1t5XyJQ62ImdLXx5NdIIfihey6xpum9/gRQ==
 
-parseurl@~1.3.2:
+parseurl@~1.3.2, parseurl@~1.3.3:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.3.tgz#9da19e7bee8d12dff0513ed5b76957793bc2e8d4"
   integrity sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ==
@@ -10908,7 +11075,7 @@ protoduck@^5.0.1:
   dependencies:
     genfun "^5.0.0"
 
-proxy-addr@~2.0.4:
+proxy-addr@~2.0.4, proxy-addr@~2.0.5:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.5.tgz#34cbd64a2d81f4b1fd21e76f9f06c8a45299ee34"
   integrity sha512-t/7RxHXPH6cJtP0pRG6smSr9QJidhB+3kXu0KgXnbGYMgzEnUxRQ4/LDdfOwZEMyIh3/xHb8PX3t+lfL9z+YVQ==
@@ -10998,7 +11165,7 @@ qs@6.5.2, qs@~6.5.2:
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
   integrity sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==
 
-qs@^6.4.0:
+qs@6.7.0, qs@^6.4.0:
   version "6.7.0"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.7.0.tgz#41dc1a015e3d581f1621776be31afb2876a9b1bc"
   integrity sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==
@@ -11084,7 +11251,12 @@ randomfill@^1.0.3:
     randombytes "^2.0.5"
     safe-buffer "^5.1.0"
 
-range-parser@^1.0.3, range-parser@~1.2.0:
+range-parser@^1.2.1, range-parser@~1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.1.tgz#3cf37023d199e1c24d1a55b84800c2f3e6468031"
+  integrity sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg==
+
+range-parser@~1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.0.tgz#f49be6b487894ddc40dcc94a322f611092e00d5e"
   integrity sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4=
@@ -11099,6 +11271,16 @@ raw-body@2.3.3:
     iconv-lite "0.4.23"
     unpipe "1.0.0"
 
+raw-body@2.4.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-2.4.0.tgz#a1ce6fb9c9bc356ca52e89256ab59059e13d0332"
+  integrity sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==
+  dependencies:
+    bytes "3.1.0"
+    http-errors "1.7.2"
+    iconv-lite "0.4.24"
+    unpipe "1.0.0"
+
 raw-body@~1.1.0:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-1.1.7.tgz#1d027c2bfa116acc6623bca8f00016572a87d425"
@@ -12120,6 +12302,25 @@ send@0.16.2:
     range-parser "~1.2.0"
     statuses "~1.4.0"
 
+send@0.17.1:
+  version "0.17.1"
+  resolved "https://registry.yarnpkg.com/send/-/send-0.17.1.tgz#c1d8b059f7900f7466dd4938bdc44e11ddb376c8"
+  integrity sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==
+  dependencies:
+    debug "2.6.9"
+    depd "~1.1.2"
+    destroy "~1.0.4"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    fresh "0.5.2"
+    http-errors "~1.7.2"
+    mime "1.6.0"
+    ms "2.1.1"
+    on-finished "~2.3.0"
+    range-parser "~1.2.1"
+    statuses "~1.5.0"
+
 sentence-case@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/sentence-case/-/sentence-case-2.1.1.tgz#1f6e2dda39c168bf92d13f86d4a918933f667ed4"
@@ -12156,6 +12357,16 @@ serve-static@1.13.2:
     parseurl "~1.3.2"
     send "0.16.2"
 
+serve-static@1.14.1:
+  version "1.14.1"
+  resolved "https://registry.yarnpkg.com/serve-static/-/serve-static-1.14.1.tgz#666e636dc4f010f7ef29970a88a674320898b2f9"
+  integrity sha512-JMrvUwE54emCYWlTI+hGrGv5I8dEwmco/00EvkzIIsR7MqrHonbD9pO2MOfFnpFntl7ecpZs+3mW+XbQZu9QCg==
+  dependencies:
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    parseurl "~1.3.3"
+    send "0.17.1"
+
 set-blocking@^2.0.0, set-blocking@~2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
@@ -12198,6 +12409,11 @@ setprototypeof@1.1.0:
   resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.0.tgz#d0bd85536887b6fe7c0d818cb962d9d91c54e656"
   integrity sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ==
 
+setprototypeof@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.1.tgz#7e95acb24aa92f5885e0abef5ba131330d4ae683"
+  integrity sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw==
+
 sha.js@^2.4.0, sha.js@^2.4.8:
   version "2.4.11"
   resolved "https://registry.yarnpkg.com/sha.js/-/sha.js-2.4.11.tgz#37a5cf0b81ecbc6943de109ba2960d1b26584ae7"
@@ -12622,7 +12838,7 @@ static-site-generator-webpack-plugin@^3.4.2:
     url "^0.11.0"
     webpack-sources "^0.2.0"
 
-"statuses@>= 1.4.0 < 2":
+"statuses@>= 1.4.0 < 2", "statuses@>= 1.5.0 < 2", statuses@~1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.5.0.tgz#161c7dac177659fd9811f43771fa99381478628c"
   integrity sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=
@@ -13251,6 +13467,11 @@ to-vfile@^5.0.2:
     is-buffer "^2.0.0"
     vfile "^3.0.0"
 
+toidentifier@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.0.tgz#7e1be3470f1e77948bc43d94a3c8f4d7752ba553"
+  integrity sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw==
+
 toml@^2.3.2:
   version "2.3.6"
   resolved "https://registry.yarnpkg.com/toml/-/toml-2.3.6.tgz#25b0866483a9722474895559088b436fd11f861b"
@@ -13375,7 +13596,7 @@ type-check@~0.3.2:
   dependencies:
     prelude-ls "~1.1.2"
 
-type-is@~1.6.16:
+type-is@~1.6.16, type-is@~1.6.17, type-is@~1.6.18:
   version "1.6.18"
   resolved "https://registry.yarnpkg.com/type-is/-/type-is-1.6.18.tgz#4e552cd05df09467dcbc4ef739de89f2cf37c131"
   integrity sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==
@@ -13388,6 +13609,11 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
+typescript@^3.4.5:
+  version "3.4.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.5.tgz#2d2618d10bb566572b8d7aad5180d84257d70a99"
+  integrity sha512-YycBxUb49UUhdNMU5aJ7z5Ej2XGmaIBL0x34vZ82fn3hGvD+bgrMrVDpatgz2f7YxUMJxMkbWxJZeAvDxVe7Vw==
+
 ua-parser-js@^0.7.18:
   version "0.7.19"
   resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.19.tgz#94151be4c0a7fb1d001af7022fdaca4642659e4b"
@@ -13876,33 +14102,33 @@ webpack-bundle-analyzer@^3.1.0:
     opener "^1.5.1"
     ws "^6.0.0"
 
-webpack-dev-middleware@^3.6.2:
-  version "3.6.2"
-  resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-3.6.2.tgz#f37a27ad7c09cd7dc67cd97655413abaa1f55942"
-  integrity sha512-A47I5SX60IkHrMmZUlB0ZKSWi29TZTcPz7cha1Z75yYOsgWh/1AcPmQEbC8ZIbU3A1ytSv1PMU0PyPz2Lmz2jg==
+webpack-dev-middleware@^3.7.0:
+  version "3.7.0"
+  resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-3.7.0.tgz#ef751d25f4e9a5c8a35da600c5fda3582b5c6cff"
+  integrity sha512-qvDesR1QZRIAZHOE3iQ4CXLZZSQ1lAUsSpnQmlB1PBfoN/xdRjmge3Dok0W4IdaVLJOGJy3sGI4sZHwjRU0PCA==
   dependencies:
     memory-fs "^0.4.1"
-    mime "^2.3.1"
-    range-parser "^1.0.3"
+    mime "^2.4.2"
+    range-parser "^1.2.1"
     webpack-log "^2.0.0"
 
-webpack-dev-server@^3.2.1:
-  version "3.3.1"
-  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-3.3.1.tgz#7046e49ded5c1255a82c5d942bcdda552b72a62d"
-  integrity sha512-jY09LikOyGZrxVTXK0mgIq9y2IhCoJ05848dKZqX1gAGLU1YDqgpOT71+W53JH/wI4v6ky4hm+KvSyW14JEs5A==
+webpack-dev-server@^3.4.1:
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-3.4.1.tgz#a5fd8dec95dec410098e7d9a037ff9405395d51a"
+  integrity sha512-CRqZQX2ryMtrg0r3TXQPpNh76eM1HD3Wmu6zDBxIKi/d2y+4aa28Ia8weNT0bfgWpY6Vs3Oq/K8+DjfbR+tWYw==
   dependencies:
     ansi-html "0.0.7"
     bonjour "^3.5.0"
-    chokidar "^2.1.5"
+    chokidar "^2.1.6"
     compression "^1.7.4"
     connect-history-api-fallback "^1.6.0"
     debug "^4.1.1"
-    del "^4.1.0"
-    express "^4.16.4"
+    del "^4.1.1"
+    express "^4.17.0"
     html-entities "^1.2.1"
     http-proxy-middleware "^0.19.1"
     import-local "^2.0.0"
-    internal-ip "^4.2.0"
+    internal-ip "^4.3.0"
     ip "^1.1.5"
     killable "^1.0.1"
     loglevel "^1.6.1"
@@ -13918,7 +14144,7 @@ webpack-dev-server@^3.2.1:
     strip-ansi "^3.0.1"
     supports-color "^6.1.0"
     url "^0.11.0"
-    webpack-dev-middleware "^3.6.2"
+    webpack-dev-middleware "^3.7.0"
     webpack-log "^2.0.0"
     yargs "12.0.5"