diff --git a/.eslintrc.js b/.eslintrc.js
index 4ebd76b82db3..dacb799f1611 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -123,6 +123,7 @@ module.exports = {
           '^types/(.*)': './types/$1',
         },
       },
+      'eslint-import-resolver-typescript': true,
     },
   },
 };
diff --git a/babel.config.js b/babel.config.js
index f3807c45cee4..f2168c424613 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -2,6 +2,16 @@
 
 module.exports = {
   babelrcRoots: ['examples/*'],
+  overrides: [
+    {
+      presets: ['@babel/preset-flow'],
+      test: '**/*.js',
+    },
+    {
+      presets: ['@babel/preset-typescript'],
+      test: '**/*.ts',
+    },
+  ],
   plugins: [
     ['@babel/plugin-transform-modules-commonjs', {allowTopLevelThis: true}],
     '@babel/plugin-transform-strict-mode',
@@ -14,6 +24,5 @@ module.exports = {
         targets: {node: 6},
       },
     ],
-    '@babel/preset-flow',
   ],
 };
diff --git a/jest.config.js b/jest.config.js
index 5a398f1cd095..fc6ef114c0fb 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -55,6 +55,6 @@ module.exports = {
     '/e2e/__tests__/iterator-to-null-test.js',
   ],
   transform: {
-    '^.+\\.js$': '<rootDir>/packages/babel-jest',
+    '^.+\\.[jt]s$': '<rootDir>/packages/babel-jest',
   },
 };
diff --git a/package.json b/package.json
index 2c1a4b692ace..807f678ea669 100644
--- a/package.json
+++ b/package.json
@@ -1,13 +1,17 @@
 {
   "private": true,
   "devDependencies": {
-    "@babel/core": "^7.1.0",
+    "@babel/core": "^7.2.2",
     "@babel/plugin-external-helpers": "^7.0.0",
     "@babel/plugin-transform-strict-mode": "^7.0.0",
     "@babel/preset-env": "^7.1.0",
     "@babel/preset-flow": "^7.0.0",
     "@babel/preset-react": "^7.0.0",
+    "@babel/preset-typescript": "^7.0.0",
     "@babel/register": "^7.0.0",
+    "@types/babel__core": "^7.0.0",
+    "@types/babel__generator": "^7.0.0",
+    "@types/babel__template": "^7.0.0",
     "ansi-regex": "^4.0.0",
     "ansi-styles": "^3.2.0",
     "babel-eslint": "^9.0.0",
@@ -17,6 +21,7 @@
     "debug": "^4.0.1",
     "eslint": "^5.6.0",
     "eslint-config-prettier": "^3.1.0",
+    "eslint-import-resolver-typescript": "^1.1.1",
     "eslint-plugin-babel": "^5.1.0",
     "eslint-plugin-flowtype": "^2.35.0",
     "eslint-plugin-import": "^2.6.0",
@@ -56,9 +61,8 @@
     "resolve": "^1.4.0",
     "rimraf": "^2.6.2",
     "rollup": "^0.66.1",
-    "rollup-plugin-babel": "^4.0.0",
+    "rollup-plugin-babel": "^4.1.0",
     "rollup-plugin-commonjs": "^9.1.8",
-    "rollup-plugin-flow": "^1.1.1",
     "rollup-plugin-json": "^3.1.0",
     "rollup-plugin-node-builtins": "^2.1.1",
     "rollup-plugin-node-globals": "^1.4.0",
@@ -66,7 +70,7 @@
     "slash": "^2.0.0",
     "string-length": "^2.0.0",
     "strip-ansi": "^5.0.0",
-    "typescript": "^3.0.3",
+    "typescript": "^3.2.2",
     "watchify": "^3.9.0"
   },
   "scripts": {
diff --git a/packages/babel-jest/package.json b/packages/babel-jest/package.json
index 6cc0a5134faf..9e6c8d974c2b 100644
--- a/packages/babel-jest/package.json
+++ b/packages/babel-jest/package.json
@@ -13,7 +13,8 @@
     "babel-preset-jest": "^23.2.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.1.0"
+    "@babel/core": "^7.1.0",
+    "@types/babel__core": "^7.0.4"
   },
   "peerDependencies": {
     "@babel/core": "^7.0.0"
diff --git a/packages/expect/package.json b/packages/expect/package.json
index 313df003904d..e78190f08eb3 100644
--- a/packages/expect/package.json
+++ b/packages/expect/package.json
@@ -16,6 +16,9 @@
     "jest-message-util": "^23.4.0",
     "jest-regex-util": "^23.3.0"
   },
+  "devDependencies": {
+    "@types/ansi-styles": "^3.2.1"
+  },
   "engines": {
     "node": ">= 6"
   }
diff --git a/packages/jest-changed-files/package.json b/packages/jest-changed-files/package.json
index b94dae7dcfa4..fd7a58d09215 100644
--- a/packages/jest-changed-files/package.json
+++ b/packages/jest-changed-files/package.json
@@ -11,6 +11,9 @@
     "execa": "^1.0.0",
     "throat": "^4.0.0"
   },
+  "devDependencies": {
+    "@types/execa": "^0.9.0"
+  },
   "engines": {
     "node": ">= 6"
   }
diff --git a/packages/jest-circus/package.json b/packages/jest-circus/package.json
index daa5853f288c..b8e926511208 100644
--- a/packages/jest-circus/package.json
+++ b/packages/jest-circus/package.json
@@ -23,6 +23,8 @@
     "stack-utils": "^1.0.1"
   },
   "devDependencies": {
+    "@types/babel__traverse": "^7.0.4",
+    "@types/stack-utils": "^1.0.1",
     "execa": "^1.0.0",
     "jest-runtime": "^23.6.0"
   },
diff --git a/packages/jest-cli/package.json b/packages/jest-cli/package.json
index a3f983466ea1..079e2c37a4af 100644
--- a/packages/jest-cli/package.json
+++ b/packages/jest-cli/package.json
@@ -41,6 +41,23 @@
     "which": "^1.2.12",
     "yargs": "^12.0.2"
   },
+  "devDependencies": {
+    "@types/ansi-escapes": "^3.0.0",
+    "@types/exit": "^0.1.30",
+    "@types/glob": "^7.1.1",
+    "@types/graceful-fs": "^4.1.2",
+    "@types/is-ci": "^1.1.0",
+    "@types/istanbul-lib-coverage": "^1.1.0",
+    "@types/istanbul-lib-instrument": "^1.7.2",
+    "@types/istanbul-lib-source-maps": "^1.2.1",
+    "@types/micromatch": "^2.3.30",
+    "@types/node-notifier": "^0.0.28",
+    "@types/prompts": "^1.2.0",
+    "@types/rimraf": "^2.0.2",
+    "@types/string-length": "^2.0.0",
+    "@types/which": "^1.3.1",
+    "@types/yargs": "^12.0.2"
+  },
   "bin": {
     "jest": "./bin/jest.js"
   },
diff --git a/packages/jest-config/package.json b/packages/jest-config/package.json
index b00d0b7c52c7..3f5e21596341 100644
--- a/packages/jest-config/package.json
+++ b/packages/jest-config/package.json
@@ -23,6 +23,11 @@
     "micromatch": "^2.3.11",
     "pretty-format": "^23.6.0"
   },
+  "devDependencies":  {
+    "@types/babel__core": "^7.0.4",
+    "@types/glob": "^7.1.1",
+    "@types/micromatch": "^2.3.30"
+  },
   "engines": {
     "node": ">= 6"
   }
diff --git a/packages/jest-diff/package.json b/packages/jest-diff/package.json
index f8d179035aad..358aab25efb5 100644
--- a/packages/jest-diff/package.json
+++ b/packages/jest-diff/package.json
@@ -13,6 +13,9 @@
     "jest-get-type": "^22.1.0",
     "pretty-format": "^23.6.0"
   },
+  "devDependencies": {
+    "@types/diff": "^3.5.2"
+  },
   "engines": {
     "node": ">= 6"
   }
diff --git a/packages/jest-docblock/package.json b/packages/jest-docblock/package.json
index fe5b997592e5..34a0aa2d1aea 100644
--- a/packages/jest-docblock/package.json
+++ b/packages/jest-docblock/package.json
@@ -10,6 +10,9 @@
   "dependencies": {
     "detect-newline": "^2.1.0"
   },
+  "devDependencies":  {
+    "@types/detect-newline": "^2.1.0"
+  },
   "engines": {
     "node": ">= 6"
   }
diff --git a/packages/jest-environment-jsdom/package.json b/packages/jest-environment-jsdom/package.json
index 7d0b1df0de4d..9fc537c8a9e3 100644
--- a/packages/jest-environment-jsdom/package.json
+++ b/packages/jest-environment-jsdom/package.json
@@ -12,6 +12,9 @@
     "jest-util": "^23.4.0",
     "jsdom": "^11.5.1"
   },
+  "devDependencies":  {
+    "@types/jsdom": "^11.12.0"
+  },
   "engines": {
     "node": ">= 6"
   }
diff --git a/packages/jest-haste-map/package.json b/packages/jest-haste-map/package.json
index 0d00cc5b2fb1..2a748bb8d522 100644
--- a/packages/jest-haste-map/package.json
+++ b/packages/jest-haste-map/package.json
@@ -16,6 +16,13 @@
     "micromatch": "^2.3.11",
     "sane": "^3.0.0"
   },
+  "devDependencies":  {
+    "@types/fb-watchman": "^2.0.0",
+    "@types/graceful-fs": "^4.1.2",
+    "@types/invariant": "^2.2.29",
+    "@types/micromatch": "^2.3.30",
+    "@types/sane": "^2.0.0"
+  },
   "engines": {
     "node": ">= 6"
   }
diff --git a/packages/jest-jasmine2/package.json b/packages/jest-jasmine2/package.json
index b22a9a9dec34..3249c56c92bd 100644
--- a/packages/jest-jasmine2/package.json
+++ b/packages/jest-jasmine2/package.json
@@ -22,6 +22,7 @@
     "pretty-format": "^23.6.0"
   },
   "devDependencies": {
+    "@types/babel__traverse": "^7.0.4",
     "jest-runtime": "^23.6.0"
   },
   "engines": {
diff --git a/packages/jest-leak-detector/package.json b/packages/jest-leak-detector/package.json
index d4d03fa78829..9f714f91223d 100644
--- a/packages/jest-leak-detector/package.json
+++ b/packages/jest-leak-detector/package.json
@@ -11,6 +11,7 @@
     "pretty-format": "^23.6.0"
   },
   "devDependencies": {
+    "@types/weak": "^1.0.0",
     "weak": "^1.0.1"
   },
   "engines": {
diff --git a/packages/jest-message-util/package.json b/packages/jest-message-util/package.json
index 9812ad2ed322..579861aaee38 100644
--- a/packages/jest-message-util/package.json
+++ b/packages/jest-message-util/package.json
@@ -16,5 +16,10 @@
     "micromatch": "^2.3.11",
     "slash": "^2.0.0",
     "stack-utils": "^1.0.1"
+  },
+  "devDependencies":  {
+    "@types/babel__code-frame": "^7.0.0",
+    "@types/micromatch": "^2.3.30",
+    "@types/stack-utils": "^1.0.1"
   }
 }
diff --git a/packages/jest-repl/package.json b/packages/jest-repl/package.json
index 1fbf3068a631..6c0a54ee979e 100644
--- a/packages/jest-repl/package.json
+++ b/packages/jest-repl/package.json
@@ -15,6 +15,9 @@
     "repl": "^0.1.3",
     "yargs": "^12.0.2"
   },
+  "devDependencies":  {
+    "@types/yargs": "^12.0.2"
+  },
   "bin": {
     "jest-repl": "./bin/jest-repl.js"
   },
diff --git a/packages/jest-resolve/package.json b/packages/jest-resolve/package.json
index 0822630cb87f..d704461537b5 100644
--- a/packages/jest-resolve/package.json
+++ b/packages/jest-resolve/package.json
@@ -14,6 +14,7 @@
     "realpath-native": "^1.0.0"
   },
   "devDependencies": {
+    "@types/browser-resolve": "^0.0.5",
     "jest-haste-map": "^23.6.0"
   },
   "engines": {
diff --git a/packages/jest-runner/package.json b/packages/jest-runner/package.json
index e3cfd5d9609e..25da45261810 100644
--- a/packages/jest-runner/package.json
+++ b/packages/jest-runner/package.json
@@ -22,6 +22,11 @@
     "source-map-support": "^0.5.6",
     "throat": "^4.0.0"
   },
+  "devDependencies":  {
+    "@types/exit": "^0.1.30",
+    "@types/graceful-fs": "^4.1.2",
+    "@types/source-map-support": "^0.4.1"
+  },
   "engines": {
     "node": ">= 6"
   }
diff --git a/packages/jest-runtime/package.json b/packages/jest-runtime/package.json
index d9b7061017da..5b8caec7d8b0 100644
--- a/packages/jest-runtime/package.json
+++ b/packages/jest-runtime/package.json
@@ -32,6 +32,15 @@
     "yargs": "^12.0.2"
   },
   "devDependencies": {
+    "@types/babel__core": "^7.0.4",
+    "@types/convert-source-map": "^1.5.1",
+    "@types/exit": "^0.1.30",
+    "@types/glob": "^7.1.1",
+    "@types/graceful-fs": "^4.1.2",
+    "@types/micromatch": "^2.3.30",
+    "@types/strip-bom": "3.0.0",
+    "@types/write-file-atomic": "^2.1.1",
+    "@types/yargs": "^12.0.2",
     "jest-environment-jsdom": "^23.4.0",
     "jest-environment-node": "^23.4.0"
   },
diff --git a/packages/jest-snapshot/package.json b/packages/jest-snapshot/package.json
index 0be2703adf33..b0d3e64041ba 100644
--- a/packages/jest-snapshot/package.json
+++ b/packages/jest-snapshot/package.json
@@ -20,6 +20,8 @@
     "semver": "^5.5.0"
   },
   "devDependencies": {
+    "@types/mkdirp": "^0.5.2",
+    "@types/semver": "^5.5.0",
     "prettier": "^1.13.4"
   },
   "engines": {
diff --git a/packages/jest-util/package.json b/packages/jest-util/package.json
index c2b0962f73a1..16b87fd5cef0 100644
--- a/packages/jest-util/package.json
+++ b/packages/jest-util/package.json
@@ -18,6 +18,10 @@
     "source-map": "^0.6.0"
   },
   "devDependencies": {
+    "@types/callsites": "^2.0.0",
+    "@types/graceful-fs": "^4.1.2",
+    "@types/is-ci": "^1.0.10",
+    "@types/mkdirp": "^0.5.2",
     "jest-mock": "^23.2.0"
   },
   "engines": {
diff --git a/packages/jest-validate/package.json b/packages/jest-validate/package.json
index 6ea5a6e5b68f..50316742a7ba 100644
--- a/packages/jest-validate/package.json
+++ b/packages/jest-validate/package.json
@@ -14,6 +14,10 @@
     "leven": "^2.1.0",
     "pretty-format": "^23.6.0"
   },
+  "devDependencies":  {
+    "@types/camelcase": "^4.1.0",
+    "@types/leven": "^2.1.1"
+  },
   "engines": {
     "node": ">= 6"
   }
diff --git a/packages/jest-watcher/package.json b/packages/jest-watcher/package.json
index 3734874f02bc..f8aad355791b 100644
--- a/packages/jest-watcher/package.json
+++ b/packages/jest-watcher/package.json
@@ -9,6 +9,10 @@
     "jest-util": "^23.4.0",
     "string-length": "^2.0.0"
   },
+  "devDependencies":  {
+    "@types/ansi-escapes": "^3.0.0",
+    "@types/string-length": "^2.0.0"
+  },
   "repository": {
     "type": "git",
     "url": "https://github.com/facebook/jest"
diff --git a/packages/jest-worker/package.json b/packages/jest-worker/package.json
index eff0f8b77e41..9c9f020c8e42 100644
--- a/packages/jest-worker/package.json
+++ b/packages/jest-worker/package.json
@@ -12,6 +12,8 @@
     "supports-color": "^5.5.0"
   },
   "devDependencies":  {
+    "@types/merge-stream": "^1.1.2",
+    "@types/supports-color": "^5.3.0",
     "worker-farm": "^1.6.0"
   },
   "engines": {
diff --git a/packages/pretty-format/package.json b/packages/pretty-format/package.json
index 916a74227d6e..48f190cec8aa 100644
--- a/packages/pretty-format/package.json
+++ b/packages/pretty-format/package.json
@@ -15,6 +15,8 @@
     "ansi-styles": "^3.2.0"
   },
   "devDependencies": {
+    "@types/ansi-regex": "^4.0.0",
+    "@types/ansi-styles": "^3.2.1",
     "immutable": "4.0.0-rc.9",
     "react": "*",
     "react-dom": "*",
diff --git a/packages/pretty-format/src/collections.js b/packages/pretty-format/src/collections.ts
similarity index 93%
rename from packages/pretty-format/src/collections.js
rename to packages/pretty-format/src/collections.ts
index bfde775c28f1..a8a766ad761c 100644
--- a/packages/pretty-format/src/collections.js
+++ b/packages/pretty-format/src/collections.ts
@@ -4,17 +4,16 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @flow
  */
 
-import type {Config, Printer, Refs} from 'types/PrettyFormat';
+import {Config, Printer, Refs} from './';
 
 const getKeysOfEnumerableProperties = (object: Object) => {
-  const keys = Object.keys(object).sort();
+  const keys: Array<string | symbol> = Object.keys(object).sort();
 
   if (Object.getOwnPropertySymbols) {
     Object.getOwnPropertySymbols(object).forEach(symbol => {
-      //$FlowFixMe because property enumerable is missing in undefined
+      // @ts-ignore: because property enumerable is missing in undefined
       if (Object.getOwnPropertyDescriptor(object, symbol).enumerable) {
         keys.push(symbol);
       }
@@ -180,7 +179,13 @@ export function printObjectProperties(
     for (let i = 0; i < keys.length; i++) {
       const key = keys[i];
       const name = printer(key, config, indentationNext, depth, refs);
-      const value = printer(val[key], config, indentationNext, depth, refs);
+      const value = printer(
+        (val as any)[key],
+        config,
+        indentationNext,
+        depth,
+        refs,
+      );
 
       result += indentationNext + name + ': ' + value;
 
diff --git a/packages/pretty-format/src/index.js b/packages/pretty-format/src/index.ts
similarity index 83%
rename from packages/pretty-format/src/index.js
rename to packages/pretty-format/src/index.ts
index 987146e1edb9..737f966b6b7f 100644
--- a/packages/pretty-format/src/index.js
+++ b/packages/pretty-format/src/index.ts
@@ -3,22 +3,119 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-import type {
-  Colors,
-  Config,
-  Options,
-  OptionsReceived,
-  NewPlugin,
-  Plugin,
-  Plugins,
-  Refs,
-  StringOrNull,
-  Theme,
-} from 'types/PrettyFormat';
+type Colors = {
+  comment: {close: string; open: string};
+  content: {close: string; open: string};
+  prop: {close: string; open: string};
+  tag: {close: string; open: string};
+  value: {close: string; open: string};
+};
+type Indent = (arg0: string) => string;
+export type Refs = Array<any>;
+type Print = (arg0: any) => string;
+type StringOrNull = string | null;
+
+type Theme = {
+  comment: string;
+  content: string;
+  prop: string;
+  tag: string;
+  value: string;
+};
+
+type ThemeReceived = {
+  comment?: string;
+  content?: string;
+  prop?: string;
+  tag?: string;
+  value?: string;
+};
+
+type Options = {
+  callToJSON: boolean;
+  escapeRegex: boolean;
+  escapeString: boolean;
+  highlight: boolean;
+  indent: number;
+  maxDepth: number;
+  min: boolean;
+  plugins: Plugins;
+  printFunctionName: boolean;
+  theme: Theme;
+};
+
+type OptionsReceived = {
+  callToJSON?: boolean;
+  escapeRegex?: boolean;
+  escapeString?: boolean;
+  highlight?: boolean;
+  indent?: number;
+  maxDepth?: number;
+  min?: boolean;
+  plugins?: Plugins;
+  printFunctionName?: boolean;
+  theme?: ThemeReceived;
+};
+
+export type Config = {
+  callToJSON: boolean;
+  colors: Colors;
+  escapeRegex: boolean;
+  escapeString: boolean;
+  indent: string;
+  maxDepth: number;
+  min: boolean;
+  plugins: Plugins;
+  printFunctionName: boolean;
+  spacingInner: string;
+  spacingOuter: string;
+};
+
+export type Printer = (
+  val: any,
+  config: Config,
+  indentation: string,
+  depth: number,
+  refs: Refs,
+  hasCalledToJSON?: boolean,
+) => string;
+
+type Test = (arg0: any) => boolean;
+
+export type NewPlugin = {
+  serialize: (
+    val: any,
+    config: Config,
+    indentation: string,
+    depth: number,
+    refs: Refs,
+    printer: Printer,
+  ) => string;
+  test: Test;
+};
+
+type PluginOptions = {
+  edgeSpacing: string;
+  min: boolean;
+  spacing: string;
+};
+
+type OldPlugin = {
+  print: (
+    val: any,
+    print: Print,
+    indent: Indent,
+    options: PluginOptions,
+    colors: Colors,
+  ) => string;
+  test: Test;
+};
+
+type Plugin = NewPlugin | OldPlugin;
+
+type Plugins = Array<Plugin>;
 
 import style from 'ansi-styles';
 
@@ -45,18 +142,18 @@ const symbolToString = Symbol.prototype.toString;
 
 // Explicitly comparing typeof constructor to function avoids undefined as name
 // when mock identity-obj-proxy returns the key as the value for any key.
-const getConstructorName = val =>
+const getConstructorName = (val: any) =>
   (typeof val.constructor === 'function' && val.constructor.name) || 'Object';
 
 // Is val is equal to global window object? Works even if it does not exist :)
 /* global window */
-const isWindow = val => typeof window !== 'undefined' && val === window;
+const isWindow = (val: any) => typeof window !== 'undefined' && val === window;
 
 const SYMBOL_REGEXP = /^Symbol\((.*)\)(.*)$/;
 const NEWLINE_REGEXP = /\n/gi;
 
 class PrettyFormatPluginError extends Error {
-  constructor(message, stack) {
+  constructor(message: string, stack: string) {
     super(message);
     this.stack = stack;
     this.name = this.constructor.name;
@@ -255,6 +352,10 @@ function printComplexValue(
         '}';
 }
 
+function isNewPlugin(plugin: Plugin): plugin is NewPlugin {
+  return (plugin as NewPlugin).serialize != null;
+}
+
 function printPlugin(
   plugin: Plugin,
   val: any,
@@ -266,7 +367,7 @@ function printPlugin(
   let printed;
 
   try {
-    printed = plugin.serialize
+    printed = isNewPlugin(plugin)
       ? plugin.serialize(val, config, indentation, depth, refs, printer)
       : plugin.print(
           val,
@@ -393,13 +494,12 @@ function validateOptions(options: OptionsReceived) {
 }
 
 const getColorsHighlight = (options: OptionsReceived): Colors =>
-  // $FlowFixMe: Flow thinks keys from `Colors` are missing from `DEFAULT_THEME_KEYS`
   DEFAULT_THEME_KEYS.reduce((colors, key) => {
     const value =
-      options.theme && options.theme[key] !== undefined
-        ? options.theme[key]
-        : DEFAULT_THEME[key];
-    const color = style[value];
+      options.theme && (options.theme as any)[key] !== undefined
+        ? (options.theme as any)[key]
+        : (DEFAULT_THEME as any)[key];
+    const color = (style as any)[value];
     if (
       color &&
       typeof color.close === 'string' &&
diff --git a/packages/pretty-format/src/plugins/AsymmetricMatcher.js b/packages/pretty-format/src/plugins/AsymmetricMatcher.ts
similarity index 93%
rename from packages/pretty-format/src/plugins/AsymmetricMatcher.js
rename to packages/pretty-format/src/plugins/AsymmetricMatcher.ts
index 7cdb099fc30e..35a66d804ebb 100644
--- a/packages/pretty-format/src/plugins/AsymmetricMatcher.js
+++ b/packages/pretty-format/src/plugins/AsymmetricMatcher.ts
@@ -3,11 +3,9 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-import type {Config, NewPlugin, Printer, Refs} from 'types/PrettyFormat';
+import {Config, NewPlugin, Printer, Refs} from '../';
 
 import {printListItems, printObjectProperties} from '../collections';
 
@@ -90,4 +88,6 @@ export const serialize = (
 
 export const test = (val: any) => val && val.$$typeof === asymmetricMatcher;
 
-export default ({serialize, test}: NewPlugin);
+const plugin: NewPlugin = {serialize, test};
+
+export default plugin;
diff --git a/packages/pretty-format/src/plugins/ConvertAnsi.js b/packages/pretty-format/src/plugins/ConvertAnsi.ts
similarity index 84%
rename from packages/pretty-format/src/plugins/ConvertAnsi.js
rename to packages/pretty-format/src/plugins/ConvertAnsi.ts
index 1a3d952beeff..5eaa5bc3c388 100644
--- a/packages/pretty-format/src/plugins/ConvertAnsi.js
+++ b/packages/pretty-format/src/plugins/ConvertAnsi.ts
@@ -3,17 +3,15 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-import type {Config, Printer, NewPlugin, Refs} from 'types/PrettyFormat';
+import {Config, Printer, NewPlugin, Refs} from '../';
 
 import ansiRegex from 'ansi-regex';
 import style from 'ansi-styles';
 
-const toHumanReadableAnsi = text =>
-  text.replace(ansiRegex(), (match, offset, string) => {
+const toHumanReadableAnsi = (text: string) =>
+  text.replace(ansiRegex(), match => {
     switch (match) {
       case style.red.close:
       case style.green.close:
@@ -59,8 +57,8 @@ const toHumanReadableAnsi = text =>
     }
   });
 
-export const test = (val: any) =>
-  typeof val === 'string' && val.match(ansiRegex());
+export const test = (val: any): boolean =>
+  typeof val === 'string' && !!val.match(ansiRegex());
 
 export const serialize = (
   val: string,
@@ -71,4 +69,6 @@ export const serialize = (
   printer: Printer,
 ) => printer(toHumanReadableAnsi(val), config, indentation, depth, refs);
 
-export default ({serialize, test}: NewPlugin);
+const plugin: NewPlugin = {serialize, test};
+
+export default plugin;
diff --git a/packages/pretty-format/src/plugins/DOMCollection.js b/packages/pretty-format/src/plugins/DOMCollection.ts
similarity index 90%
rename from packages/pretty-format/src/plugins/DOMCollection.js
rename to packages/pretty-format/src/plugins/DOMCollection.ts
index 716e83829617..6fe064edff76 100644
--- a/packages/pretty-format/src/plugins/DOMCollection.js
+++ b/packages/pretty-format/src/plugins/DOMCollection.ts
@@ -3,11 +3,9 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-import type {Config, NewPlugin, Printer, Refs} from 'types/PrettyFormat';
+import {Config, NewPlugin, Printer, Refs} from '../';
 
 import {printListItems, printObjectProperties} from '../collections';
 
@@ -26,7 +24,7 @@ export const test = (val: any) =>
   testName(val.constructor.name);
 
 // Convert array of attribute objects to props object.
-const propsReducer = (props, attribute) => {
+const propsReducer = (props: any, attribute: any) => {
   props[attribute.name] = attribute.value;
   return props;
 };
@@ -72,4 +70,6 @@ export const serialize = (
   );
 };
 
-export default ({serialize, test}: NewPlugin);
+const plugin: NewPlugin = {serialize, test};
+
+export default plugin;
diff --git a/packages/pretty-format/src/plugins/DOMElement.js b/packages/pretty-format/src/plugins/DOMElement.ts
similarity index 58%
rename from packages/pretty-format/src/plugins/DOMElement.js
rename to packages/pretty-format/src/plugins/DOMElement.ts
index b09cbeb1d409..1ea917c57cad 100644
--- a/packages/pretty-format/src/plugins/DOMElement.js
+++ b/packages/pretty-format/src/plugins/DOMElement.ts
@@ -3,11 +3,9 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-import type {Config, NewPlugin, Printer, Refs} from 'types/PrettyFormat';
+import {Config, NewPlugin, Printer, Refs} from '../';
 
 import {
   printChildren,
@@ -18,30 +16,6 @@ import {
   printText,
 } from './lib/markup';
 
-type Attribute = {
-  name: string,
-  value: string,
-};
-
-type Element = {
-  attributes: Array<Attribute>,
-  childNodes: Array<Element | Text | Comment>,
-  nodeType: 1,
-  tagName: string,
-};
-type Text = {
-  data: string,
-  nodeType: 3,
-};
-type Comment = {
-  data: string,
-  nodeType: 8,
-};
-type DocumentFragment = {
-  children: Array<Element>,
-  nodeType: 11,
-};
-
 const ELEMENT_NODE = 1;
 const TEXT_NODE = 3;
 const COMMENT_NODE = 8;
@@ -61,33 +35,39 @@ export const test = (val: any) =>
   val.constructor.name &&
   testNode(val.nodeType, val.constructor.name);
 
-// Convert array of attribute objects to keys array and props object.
-const keysMapper = attribute => attribute.name;
-const propsReducer = (props, attribute) => {
-  props[attribute.name] = attribute.value;
-  return props;
-};
+type HandledType = Element | Text | Comment | DocumentFragment;
+
+function nodeIsText(node: HandledType): node is Text {
+  return node.nodeType === TEXT_NODE;
+}
+
+function nodeIsComment(node: HandledType): node is Comment {
+  return node.nodeType === COMMENT_NODE;
+}
+
+function nodeIsFragment(node: HandledType): node is DocumentFragment {
+  return node.nodeType === FRAGMENT_NODE;
+}
 
 export const serialize = (
-  node: Element | Text | Comment | DocumentFragment,
+  node: HandledType,
   config: Config,
   indentation: string,
   depth: number,
   refs: Refs,
   printer: Printer,
 ): string => {
-  if (node.nodeType === TEXT_NODE) {
+  if (nodeIsText(node)) {
     return printText(node.data, config);
   }
 
-  if (node.nodeType === COMMENT_NODE) {
+  if (nodeIsComment(node)) {
     return printComment(node.data, config);
   }
 
-  const type =
-    node.nodeType === FRAGMENT_NODE
-      ? `DocumentFragment`
-      : node.tagName.toLowerCase();
+  const type = nodeIsFragment(node)
+    ? `DocumentFragment`
+    : node.tagName.toLowerCase();
 
   if (++depth > config.maxDepth) {
     return printElementAsLeaf(type, config);
@@ -96,8 +76,20 @@ export const serialize = (
   return printElement(
     type,
     printProps(
-      Array.prototype.map.call(node.attributes || [], keysMapper).sort(),
-      Array.prototype.reduce.call(node.attributes || [], propsReducer, {}),
+      nodeIsFragment(node)
+        ? []
+        : Array.from(node.attributes)
+            .map(attr => attr.name)
+            .sort(),
+      nodeIsFragment(node)
+        ? []
+        : Array.from(node.attributes).reduce(
+            (props, attribute) => {
+              props[attribute.name] = attribute.value;
+              return props;
+            },
+            {} as any,
+          ),
       config,
       indentation + config.indent,
       depth,
@@ -117,4 +109,6 @@ export const serialize = (
   );
 };
 
-export default ({serialize, test}: NewPlugin);
+const plugin: NewPlugin = {serialize, test};
+
+export default plugin;
diff --git a/packages/pretty-format/src/plugins/Immutable.js b/packages/pretty-format/src/plugins/Immutable.ts
similarity index 95%
rename from packages/pretty-format/src/plugins/Immutable.js
rename to packages/pretty-format/src/plugins/Immutable.ts
index 06f0adcdb0c2..91b322c1eb3c 100644
--- a/packages/pretty-format/src/plugins/Immutable.js
+++ b/packages/pretty-format/src/plugins/Immutable.ts
@@ -3,11 +3,9 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-import type {Config, Printer, NewPlugin, Refs} from 'types/PrettyFormat';
+import {Config, Printer, NewPlugin, Refs} from '../';
 import {printIteratorEntries, printIteratorValues} from '../collections';
 
 // SENTINEL constants are from https://github.com/facebook/immutable-js
@@ -21,8 +19,8 @@ const IS_SEQ_SENTINEL = '@@__IMMUTABLE_SEQ__@@';
 const IS_SET_SENTINEL = '@@__IMMUTABLE_SET__@@';
 const IS_STACK_SENTINEL = '@@__IMMUTABLE_STACK__@@';
 
-const getImmutableName = name => 'Immutable.' + name;
-const printAsLeaf = name => '[' + name + ']';
+const getImmutableName = (name: string) => 'Immutable.' + name;
+const printAsLeaf = (name: string) => '[' + name + ']';
 const SPACE = ' ';
 const LAZY = '…'; // Seq is lazy if it calls a method like filter
 
@@ -52,7 +50,7 @@ const printImmutableEntries = (
 
 // Record has an entries method because it is a collection in immutable v3.
 // Return an iterator for Immutable Record from version v3 or v4.
-const getRecordEntries = val => {
+const getRecordEntries = (val: any) => {
   let i = 0;
   return {
     next() {
@@ -239,4 +237,6 @@ export const test = (val: any) =>
   val &&
   (val[IS_ITERABLE_SENTINEL] === true || val[IS_RECORD_SENTINEL] === true);
 
-export default ({serialize, test}: NewPlugin);
+const plugin: NewPlugin = {serialize, test};
+
+export default plugin;
diff --git a/packages/pretty-format/src/plugins/ReactElement.js b/packages/pretty-format/src/plugins/ReactElement.ts
similarity index 90%
rename from packages/pretty-format/src/plugins/ReactElement.js
rename to packages/pretty-format/src/plugins/ReactElement.ts
index f83b63361c7e..4ebb97263e38 100644
--- a/packages/pretty-format/src/plugins/ReactElement.js
+++ b/packages/pretty-format/src/plugins/ReactElement.ts
@@ -3,11 +3,9 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-import type {Config, NewPlugin, Printer, Refs} from 'types/PrettyFormat';
+import {Config, NewPlugin, Printer, Refs} from '../';
 
 import {
   printChildren,
@@ -24,7 +22,7 @@ const contextSymbol = Symbol.for('react.context');
 
 // Given element.props.children, or subtree during recursive traversal,
 // return flattened array of children.
-const getChildren = (arg, children = []) => {
+const getChildren = (arg: any[], children = []) => {
   if (Array.isArray(arg)) {
     arg.forEach(item => {
       getChildren(item, children);
@@ -35,7 +33,7 @@ const getChildren = (arg, children = []) => {
   return children;
 };
 
-const getType = element => {
+const getType = (element: any) => {
   const type = element.type;
   if (typeof type === 'string') {
     return type;
@@ -66,7 +64,7 @@ const getType = element => {
   return 'UNDEFINED';
 };
 
-const getPropKeys = element => {
+const getPropKeys = (element: any) => {
   const {props} = element;
 
   return Object.keys(props)
@@ -75,7 +73,7 @@ const getPropKeys = element => {
 };
 
 export const serialize = (
-  element: React$Element<any>,
+  element: any,
   config: Config,
   indentation: string,
   depth: number,
@@ -109,4 +107,6 @@ export const serialize = (
 
 export const test = (val: any) => val && val.$$typeof === elementSymbol;
 
-export default ({serialize, test}: NewPlugin);
+const plugin: NewPlugin = {serialize, test};
+
+export default plugin;
diff --git a/packages/pretty-format/src/plugins/ReactTestComponent.js b/packages/pretty-format/src/plugins/ReactTestComponent.ts
similarity index 75%
rename from packages/pretty-format/src/plugins/ReactTestComponent.js
rename to packages/pretty-format/src/plugins/ReactTestComponent.ts
index ca892cb9ae86..954b347cca09 100644
--- a/packages/pretty-format/src/plugins/ReactTestComponent.js
+++ b/packages/pretty-format/src/plugins/ReactTestComponent.ts
@@ -3,17 +3,19 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-import type {
-  Config,
-  Printer,
-  NewPlugin,
-  ReactTestObject,
-  Refs,
-} from 'types/PrettyFormat';
+import {Config, Printer, NewPlugin, Refs} from '../';
+
+export type ReactTestObject = {
+  $$typeof: Symbol;
+  type: string;
+  props?: Object;
+  children?: null | Array<ReactTestChild>;
+};
+
+// Child can be `number` in Stack renderer but not in Fiber renderer.
+type ReactTestChild = ReactTestObject | string | number;
 
 import {
   printChildren,
@@ -24,12 +26,12 @@ import {
 
 const testSymbol = Symbol.for('react.test.json');
 
-const getPropKeys = object => {
+const getPropKeys = (object: ReactTestObject) => {
   const {props} = object;
 
   return props
     ? Object.keys(props)
-        .filter(key => props[key] !== undefined)
+        .filter(key => (props as any)[key] !== undefined)
         .sort()
     : [];
 };
@@ -76,4 +78,6 @@ export const serialize = (
 
 export const test = (val: any) => val && val.$$typeof === testSymbol;
 
-export default ({serialize, test}: NewPlugin);
+const plugin: NewPlugin = {serialize, test};
+
+export default plugin;
diff --git a/packages/pretty-format/src/plugins/lib/escapeHTML.js b/packages/pretty-format/src/plugins/lib/escapeHTML.ts
similarity index 96%
rename from packages/pretty-format/src/plugins/lib/escapeHTML.js
rename to packages/pretty-format/src/plugins/lib/escapeHTML.ts
index fba2dffc3340..b9dc0d0eb484 100644
--- a/packages/pretty-format/src/plugins/lib/escapeHTML.js
+++ b/packages/pretty-format/src/plugins/lib/escapeHTML.ts
@@ -3,8 +3,6 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
 export default function escapeHTML(str: string): string {
diff --git a/packages/pretty-format/src/plugins/lib/markup.js b/packages/pretty-format/src/plugins/lib/markup.ts
similarity index 97%
rename from packages/pretty-format/src/plugins/lib/markup.js
rename to packages/pretty-format/src/plugins/lib/markup.ts
index 70ebceebc806..4134c98317b1 100644
--- a/packages/pretty-format/src/plugins/lib/markup.js
+++ b/packages/pretty-format/src/plugins/lib/markup.ts
@@ -3,18 +3,16 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-import type {Config, Printer, Refs} from 'types/PrettyFormat';
+import {Config, Printer, Refs} from '../../';
 
 import escapeHTML from './escapeHTML';
 
 // Return empty string if keys is empty.
 export const printProps = (
   keys: Array<string>,
-  props: Object,
+  props: any,
   config: Config,
   indentation: string,
   depth: number,
diff --git a/packages/pretty-format/tsconfig.json b/packages/pretty-format/tsconfig.json
new file mode 100644
index 000000000000..7bb06bce6d20
--- /dev/null
+++ b/packages/pretty-format/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "build"
+  }
+}
diff --git a/scripts/browserBuild.js b/scripts/browserBuild.js
index d7d879820b58..a3ad5f9df398 100644
--- a/scripts/browserBuild.js
+++ b/scripts/browserBuild.js
@@ -14,12 +14,15 @@ const rollupBuiltins = require('rollup-plugin-node-builtins');
 const rollupGlobals = require('rollup-plugin-node-globals');
 const rollupJson = require('rollup-plugin-json');
 const rollupBabel = require('rollup-plugin-babel');
-const rollupFlow = require('rollup-plugin-flow');
+
+const transformOptions = require('../babel.config.js');
 
 const babelEs5Options = {
   // Dont load other config files
   babelrc: false,
   configFile: false,
+  extensions: ['.js', '.jsx', '.ts', '.tsx'],
+  overrides: transformOptions.overrides,
   plugins: [
     '@babel/plugin-transform-strict-mode',
     '@babel/plugin-external-helpers',
@@ -28,14 +31,11 @@ const babelEs5Options = {
     [
       '@babel/preset-env',
       {
-        // Required for Rollup
-        modules: false,
         shippedProposals: true,
         // Target ES5
         targets: 'IE 11',
       },
     ],
-    '@babel/preset-flow',
   ],
   runtimeHelpers: true,
 };
@@ -52,13 +52,19 @@ function browserBuild(pkgName, entryPath, destination) {
             : undefined;
         },
       },
-      rollupFlow(),
-      rollupJson(),
+      // strip types
+      rollupBabel({
+        babelrc: false,
+        configFile: false,
+        extensions: ['.js', '.jsx', '.ts', '.tsx'],
+        overrides: transformOptions.overrides,
+      }),
       rollupCommonjs(),
+      rollupJson(),
       rollupBabel(babelEs5Options),
       rollupGlobals(),
       rollupBuiltins(),
-      rollupResolve(),
+      rollupResolve({extensions: ['.js', '.jsx', '.ts', '.tsx']}),
     ],
     strict: false,
   }).then(bundle =>
diff --git a/scripts/build.js b/scripts/build.js
index fa3e256272a1..d8d9bffd82be 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -15,7 +15,7 @@
  *  node ./scripts/build.js
  *  node ./scripts/build.js /users/123/jest/packages/jest-111/src/111.js
  *
- * NOTE: this script is node@4 compatible
+ * NOTE: this script is node@6 compatible
  */
 
 'use strict';
@@ -24,6 +24,7 @@ const fs = require('fs');
 const path = require('path');
 const glob = require('glob');
 const mkdirp = require('mkdirp');
+const execa = require('execa');
 
 const babel = require('@babel/core');
 const chalk = require('chalk');
@@ -38,13 +39,13 @@ const SRC_DIR = 'src';
 const BUILD_DIR = 'build';
 const BUILD_ES5_DIR = 'build-es5';
 const JS_FILES_PATTERN = '**/*.js';
+const TS_FILES_PATTERN = '**/*.ts';
 const IGNORE_PATTERN = '**/__{tests,mocks}__/**';
 const PACKAGES_DIR = path.resolve(__dirname, '../packages');
 
 const INLINE_REQUIRE_BLACKLIST = /packages\/expect|(jest-(circus|diff|get-type|jasmine2|matcher-utils|message-util|regex-util|snapshot))|pretty-format\//;
 
 const transformOptions = require('../babel.config.js');
-transformOptions.babelrc = false;
 
 const prettierConfig = prettier.resolveConfig.sync(__filename);
 prettierConfig.trailingComma = 'none';
@@ -73,19 +74,18 @@ function getBuildPath(file, buildFolder) {
   const pkgSrcPath = path.resolve(PACKAGES_DIR, pkgName, SRC_DIR);
   const pkgBuildPath = path.resolve(PACKAGES_DIR, pkgName, buildFolder);
   const relativeToSrcPath = path.relative(pkgSrcPath, file);
-  return path.resolve(pkgBuildPath, relativeToSrcPath);
+  return path.resolve(pkgBuildPath, relativeToSrcPath).replace(/\.ts$/, '.js');
 }
 
 function buildNodePackage(p) {
   const srcDir = path.resolve(p, SRC_DIR);
   const pattern = path.resolve(srcDir, '**/*');
-  const files = glob.sync(pattern, {
-    nodir: true,
-  });
+  const files = glob.sync(pattern, {nodir: true});
 
   process.stdout.write(adjustToTerminalWidth(`${path.basename(p)}\n`));
 
   files.forEach(file => buildFile(file, true));
+
   process.stdout.write(`${OK}\n`);
 }
 
@@ -104,11 +104,13 @@ function buildBrowserPackage(p) {
         `browser field for ${pkgJsonPath} should start with "${BUILD_ES5_DIR}"`
       );
     }
-    browserBuild(
-      p.split('/').pop(),
-      path.resolve(srcDir, 'index.js'),
-      path.resolve(p, browser)
-    )
+    let indexFile = path.resolve(srcDir, 'index.js');
+
+    if (!fs.existsSync(indexFile)) {
+      indexFile = indexFile.replace(/\.js$/, '.ts');
+    }
+
+    browserBuild(p.split('/').pop(), indexFile, path.resolve(p, browser))
       .then(() => {
         process.stdout.write(adjustToTerminalWidth(`${path.basename(p)}\n`));
         process.stdout.write(`${OK}\n`);
@@ -134,7 +136,10 @@ function buildFile(file, silent) {
   }
 
   mkdirp.sync(path.dirname(destPath));
-  if (!micromatch.isMatch(file, JS_FILES_PATTERN)) {
+  if (
+    !micromatch.isMatch(file, JS_FILES_PATTERN) &&
+    !micromatch.isMatch(file, TS_FILES_PATTERN)
+  ) {
     fs.createReadStream(file).pipe(fs.createWriteStream(destPath));
     silent ||
       process.stdout.write(
@@ -186,10 +191,21 @@ function buildFile(file, silent) {
 
 const files = process.argv.slice(2);
 
+function compileTypes(packages) {
+  const packageWithTs = packages.filter(p =>
+    fs.existsSync(path.resolve(p, 'tsconfig.json'))
+  );
+
+  execa.sync('tsc', ['-b', ...packageWithTs]);
+}
+
 if (files.length) {
   files.forEach(buildFile);
 } else {
   const packages = getPackages();
+  process.stdout.write(chalk.inverse(' Typechecking \n'));
+  compileTypes(packages);
+  process.stdout.write(`${OK}\n\n`);
   process.stdout.write(chalk.inverse(' Building packages \n'));
   packages.forEach(buildNodePackage);
   process.stdout.write('\n');
diff --git a/scripts/watch.js b/scripts/watch.js
index ad0b9ed0d51a..9704c2e94f16 100644
--- a/scripts/watch.js
+++ b/scripts/watch.js
@@ -13,6 +13,7 @@ const fs = require('fs');
 const {execSync} = require('child_process');
 const path = require('path');
 const chalk = require('chalk');
+const execa = require('execa');
 const getPackages = require('./getPackages');
 
 const BUILD_CMD = `node ${path.resolve(__dirname, './build.js')}`;
@@ -27,11 +28,12 @@ const exists = filename => {
 };
 const rebuild = filename => filesToBuild.set(filename, true);
 
-getPackages().forEach(p => {
+const packages = getPackages();
+packages.forEach(p => {
   const srcDir = path.resolve(p, 'src');
   try {
     fs.accessSync(srcDir, fs.F_OK);
-    fs.watch(path.resolve(p, 'src'), {recursive: true}, (event, filename) => {
+    fs.watch(srcDir, {recursive: true}, (event, filename) => {
       const filePath = path.resolve(srcDir, filename);
 
       if ((event === 'change' || event === 'rename') && exists(filePath)) {
@@ -55,6 +57,12 @@ getPackages().forEach(p => {
   }
 });
 
+const packageWithTs = packages.filter(p =>
+  fs.existsSync(path.resolve(p, 'tsconfig.json'))
+);
+
+execa('tsc', ['-b', ...packageWithTs, '--watch']);
+
 setInterval(() => {
   const files = Array.from(filesToBuild.keys());
   if (files.length) {
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 000000000000..c0ed23d075f0
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,50 @@
+{
+  "compilerOptions": {
+    "target": "es2017",                       /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
+    "lib": ["dom", "es2017"],                       /* Specify library files to be included in the compilation. */
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    "declaration": true,                      /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    // "outDir": "./",                        /* Redirect output structure to the directory. */
+    // "rootDir": "./",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    "composite": true,                        /* Enable project compilation */
+    "emitDeclarationOnly": true,
+    "noEmitOnError": true,
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    "strict": true,                           /* Enable all strict type-checking options. */
+
+    /* Additional Checks */
+    "noUnusedLocals": true,                   /* Report errors on unused locals. */
+    "noUnusedParameters": true,               /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    "moduleResolution": "node",               /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+  }
+}
diff --git a/yarn.lock b/yarn.lock
index 389533396255..ea7b003d26a7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9,32 +9,32 @@
   dependencies:
     "@babel/highlight" "^7.0.0"
 
-"@babel/core@^7.0.0", "@babel/core@^7.1.0":
-  version "7.1.2"
-  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.1.2.tgz#f8d2a9ceb6832887329a7b60f9d035791400ba4e"
-  integrity sha512-IFeSSnjXdhDaoysIlev//UzHZbdEmm7D0EIH2qtse9xK7mXEZQpYjs2P00XlP1qYsYvid79p+Zgg6tz1mp6iVw==
+"@babel/core@^7.0.0", "@babel/core@^7.1.0", "@babel/core@^7.2.2":
+  version "7.2.2"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.2.2.tgz#07adba6dde27bb5ad8d8672f15fde3e08184a687"
+  integrity sha512-59vB0RWt09cAct5EIe58+NzGP4TFSD3Bz//2/ELy3ZeTeKF6VTD1AXlH8BGGbCX0PuobZBsIzO7IAI9PH67eKw==
   dependencies:
     "@babel/code-frame" "^7.0.0"
-    "@babel/generator" "^7.1.2"
-    "@babel/helpers" "^7.1.2"
-    "@babel/parser" "^7.1.2"
-    "@babel/template" "^7.1.2"
-    "@babel/traverse" "^7.1.0"
-    "@babel/types" "^7.1.2"
+    "@babel/generator" "^7.2.2"
+    "@babel/helpers" "^7.2.0"
+    "@babel/parser" "^7.2.2"
+    "@babel/template" "^7.2.2"
+    "@babel/traverse" "^7.2.2"
+    "@babel/types" "^7.2.2"
     convert-source-map "^1.1.0"
-    debug "^3.1.0"
-    json5 "^0.5.0"
+    debug "^4.1.0"
+    json5 "^2.1.0"
     lodash "^4.17.10"
     resolve "^1.3.2"
     semver "^5.4.1"
     source-map "^0.5.0"
 
-"@babel/generator@^7.0.0", "@babel/generator@^7.1.2", "@babel/generator@^7.1.3":
-  version "7.1.3"
-  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.1.3.tgz#2103ec9c42d9bdad9190a6ad5ff2d456fd7b8673"
-  integrity sha512-ZoCZGcfIJFJuZBqxcY9OjC1KW2lWK64qrX1o4UYL3yshVhwKFYgzpWZ0vvtGMNJdTlvkw0W+HR1VnYN8q3QPFQ==
+"@babel/generator@^7.0.0", "@babel/generator@^7.2.2":
+  version "7.2.2"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.2.2.tgz#18c816c70962640eab42fe8cae5f3947a5c65ccc"
+  integrity sha512-I4o675J/iS8k+P38dvJ3IBGqObLXyQLTxtrR4u9cSUJOURvafeEWb/pFMOTwtNrmq73mJzyF6ueTbO1BtN0Zeg==
   dependencies:
-    "@babel/types" "^7.1.3"
+    "@babel/types" "^7.2.2"
     jsesc "^2.5.1"
     lodash "^4.17.10"
     source-map "^0.5.0"
@@ -203,14 +203,14 @@
     "@babel/traverse" "^7.1.0"
     "@babel/types" "^7.0.0"
 
-"@babel/helpers@^7.1.2":
-  version "7.1.2"
-  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.1.2.tgz#ab752e8c35ef7d39987df4e8586c63b8846234b5"
-  integrity sha512-Myc3pUE8eswD73aWcartxB16K6CGmHDv9KxOmD2CeOs/FaEAQodr3VYGmlvOmog60vNQ2w8QbatuahepZwrHiA==
+"@babel/helpers@^7.2.0":
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.2.0.tgz#8335f3140f3144270dc63c4732a4f8b0a50b7a21"
+  integrity sha512-Fr07N+ea0dMcMN8nFpuK6dUIT7/ivt9yKQdEEnjVS83tG2pHwPi03gYmk/tyuwONnZ+sY+GFFPlWGgCtW1hF9A==
   dependencies:
     "@babel/template" "^7.1.2"
-    "@babel/traverse" "^7.1.0"
-    "@babel/types" "^7.1.2"
+    "@babel/traverse" "^7.1.5"
+    "@babel/types" "^7.2.0"
 
 "@babel/highlight@^7.0.0":
   version "7.0.0"
@@ -221,10 +221,10 @@
     esutils "^2.0.2"
     js-tokens "^4.0.0"
 
-"@babel/parser@^7.0.0", "@babel/parser@^7.1.2", "@babel/parser@^7.1.3":
-  version "7.1.3"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.1.3.tgz#2c92469bac2b7fbff810b67fca07bd138b48af77"
-  integrity sha512-gqmspPZOMW3MIRb9HlrnbZHXI1/KHTOroBwN1NcLL6pWxzqzEKGvRTq0W/PxS45OtQGbaFikSQpkS5zbnsQm2w==
+"@babel/parser@^7.0.0", "@babel/parser@^7.1.0", "@babel/parser@^7.2.2", "@babel/parser@^7.2.3":
+  version "7.2.3"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.2.3.tgz#32f5df65744b70888d17872ec106b02434ba1489"
+  integrity sha512-0LyEcVlfCoFmci8mXx8A5oIkpkOgyo8dRHtxBnK9RRBwxO2+JZPNsqtVEZQ7mJFPxnXF9lfmU24mHOPI0qnlkA==
 
 "@babel/plugin-check-constants@^7.0.0-beta.38":
   version "7.0.0-beta.38"
@@ -775,7 +775,7 @@
     "@babel/plugin-transform-react-jsx-self" "^7.0.0"
     "@babel/plugin-transform-react-jsx-source" "^7.0.0"
 
-"@babel/preset-typescript@*":
+"@babel/preset-typescript@*", "@babel/preset-typescript@^7.0.0":
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/@babel/preset-typescript/-/preset-typescript-7.1.0.tgz#49ad6e2084ff0bfb5f1f7fb3b5e76c434d442c7f"
   integrity sha512-LYveByuF9AOM8WrsNne5+N79k1YxjNB6gmpCQsnuSBAcV8QUeB+ZUxQzL7Rz7HksPbahymKkq2qBR+o36ggFZA==
@@ -803,34 +803,34 @@
   dependencies:
     regenerator-runtime "^0.12.0"
 
-"@babel/template@^7.0.0", "@babel/template@^7.1.0", "@babel/template@^7.1.2":
-  version "7.1.2"
-  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.1.2.tgz#090484a574fef5a2d2d7726a674eceda5c5b5644"
-  integrity sha512-SY1MmplssORfFiLDcOETrW7fCLl+PavlwMh92rrGcikQaRq4iWPVH0MpwPpY3etVMx6RnDjXtr6VZYr/IbP/Ag==
+"@babel/template@^7.0.0", "@babel/template@^7.1.0", "@babel/template@^7.1.2", "@babel/template@^7.2.2":
+  version "7.2.2"
+  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.2.2.tgz#005b3fdf0ed96e88041330379e0da9a708eb2907"
+  integrity sha512-zRL0IMM02AUDwghf5LMSSDEz7sBCO2YnNmpg3uWTZj/v1rcG2BmQUvaGU8GhU8BvfMh1k2KIAYZ7Ji9KXPUg7g==
   dependencies:
     "@babel/code-frame" "^7.0.0"
-    "@babel/parser" "^7.1.2"
-    "@babel/types" "^7.1.2"
+    "@babel/parser" "^7.2.2"
+    "@babel/types" "^7.2.2"
 
-"@babel/traverse@^7.0.0", "@babel/traverse@^7.1.0":
-  version "7.1.4"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.1.4.tgz#f4f83b93d649b4b2c91121a9087fa2fa949ec2b4"
-  integrity sha512-my9mdrAIGdDiSVBuMjpn/oXYpva0/EZwWL3sm3Wcy/AVWO2eXnsoZruOT9jOGNRXU8KbCIu5zsKnXcAJ6PcV6Q==
+"@babel/traverse@^7.0.0", "@babel/traverse@^7.1.0", "@babel/traverse@^7.1.5", "@babel/traverse@^7.2.2":
+  version "7.2.3"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.2.3.tgz#7ff50cefa9c7c0bd2d81231fdac122f3957748d8"
+  integrity sha512-Z31oUD/fJvEWVR0lNZtfgvVt512ForCTNKYcJBGbPb1QZfve4WGH8Wsy7+Mev33/45fhP/hwQtvgusNdcCMgSw==
   dependencies:
     "@babel/code-frame" "^7.0.0"
-    "@babel/generator" "^7.1.3"
+    "@babel/generator" "^7.2.2"
     "@babel/helper-function-name" "^7.1.0"
     "@babel/helper-split-export-declaration" "^7.0.0"
-    "@babel/parser" "^7.1.3"
-    "@babel/types" "^7.1.3"
-    debug "^3.1.0"
+    "@babel/parser" "^7.2.3"
+    "@babel/types" "^7.2.2"
+    debug "^4.1.0"
     globals "^11.1.0"
     lodash "^4.17.10"
 
-"@babel/types@^7.0.0", "@babel/types@^7.1.2", "@babel/types@^7.1.3":
-  version "7.1.3"
-  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.1.3.tgz#3a767004567060c2f40fca49a304712c525ee37d"
-  integrity sha512-RpPOVfK+yatXyn8n4PB1NW6k9qjinrXrRR8ugBN8fD6hCy5RXI6PSbVqpOJBO9oSaY7Nom4ohj35feb0UR9hSA==
+"@babel/types@^7.0.0", "@babel/types@^7.1.2", "@babel/types@^7.2.0", "@babel/types@^7.2.2":
+  version "7.2.2"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.2.2.tgz#44e10fc24e33af524488b716cdaee5360ea8ed1e"
+  integrity sha512-fKCuD6UFUMkR541eDWL+2ih/xFZBXPOg/7EQFeTluMDebfqR4jrpaCjLhkWlQS4hT6nRa2PMEgXKbRB5/H2fpg==
   dependencies:
     esutils "^2.0.2"
     lodash "^4.17.10"
@@ -1413,26 +1413,340 @@
   resolved "https://registry.yarnpkg.com/@sheerun/mutationobserver-shim/-/mutationobserver-shim-0.3.2.tgz#8013f2af54a2b7d735f71560ff360d3a8176a87b"
   integrity sha512-vTCdPp/T/Q3oSqwHmZ5Kpa9oI7iLtGl3RQaA/NyLHikvcrPxACkkKVr/XzkSPJWXHRhKGzVvb0urJsbMlRxi1Q==
 
+"@types/ansi-escapes@^3.0.0":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/ansi-escapes/-/ansi-escapes-3.0.0.tgz#619bbc6d46fc75da6d784e53b5a25d2efff07108"
+  integrity sha512-aamJrX6PdmIO8E9qhZaYmXiMGXwnkF2lcga/VbqLf8g90aaKGZ4cSFP5AabqxAbmp0h69C9yE3a4fUBtVpqtmg==
+  dependencies:
+    "@types/node" "*"
+
+"@types/ansi-regex@^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@types/ansi-regex/-/ansi-regex-4.0.0.tgz#cb20bb66da7700ea9b26f16971f03f0e092eddad"
+  integrity sha512-r1W316vjsZXn1/csLC4HcCJs6jIHIzksHJd7xx+Dl+PAb0S2Dh9cR8ZsIMEfGmbBtP7JNWlf2KKahSkDP6rg3g==
+
+"@types/ansi-styles@^3.2.1":
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/@types/ansi-styles/-/ansi-styles-3.2.1.tgz#49e996bb6e0b7957ca831205df31eb9a0702492c"
+  integrity sha512-UFa7mfKgSutXdT+elzJo8Ulr7FHgLNAyglVIOZYXFNJVQERm8DPrcwPret5BYk66LBE7fwm1XoVGi76MJkQ6ow==
+  dependencies:
+    "@types/color-name" "*"
+
+"@types/babel-types@*":
+  version "7.0.4"
+  resolved "https://registry.yarnpkg.com/@types/babel-types/-/babel-types-7.0.4.tgz#bfd5b0d0d1ba13e351dff65b6e52783b816826c8"
+  integrity sha512-WiZhq3SVJHFRgRYLXvpf65XnV6ipVHhnNaNvE8yCimejrGglkg38kEj0JcizqwSHxmPSjcTlig/6JouxLGEhGw==
+
+"@types/babel__code-frame@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@types/babel__code-frame/-/babel__code-frame-7.0.0.tgz#d5658827984c1e386c1b4ef30699b344d3f732a2"
+  integrity sha512-Rt0KuqopAdtpyvxO0JbKbwgtw7B+y0NQpTXns+tiz1lqGXywOESSKIiiQt0wnCreqEKvmrArH7KZ6bQg+w8BoA==
+
+"@types/babel__core@^7.0.0", "@types/babel__core@^7.0.4":
+  version "7.0.4"
+  resolved "https://registry.yarnpkg.com/@types/babel__core/-/babel__core-7.0.4.tgz#14b30c11113bad353cabfaea73e327b48edb0f0e"
+  integrity sha512-2Y2RK1BN5BRFfhneGfQA8mmFmTANbzGgS5uQPluoRqGNWb6uAcefqxzNbqgxPpmPkLqKapQfmYcyyl5iAQV+fA==
+  dependencies:
+    "@babel/parser" "^7.1.0"
+    "@babel/types" "^7.0.0"
+
+"@types/babel__generator@^7.0.0":
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/@types/babel__generator/-/babel__generator-7.0.1.tgz#533bd37e7be8af27ebf8fcc0a053cfa4c03f4c5c"
+  integrity sha512-QZ+oM5v3lAh/4DqWDyCL0rVi/BJlKRANDEpShxt3Lg+rhbFA78Ec7N+8lcAIpziA/Mfp/1ShDJj2Ti3HJ/JPxA==
+  dependencies:
+    "@babel/types" "^7.0.0"
+
+"@types/babel__template@^7.0.0":
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/@types/babel__template/-/babel__template-7.0.1.tgz#8de6effa729bf0b0f65eb72399b629a3998a7f10"
+  integrity sha512-LT1zwkpL0/2oBP+npLaOCYSWv47cxbdAvONutjalMdCIBfjtfzVNnT8rgllBmsr15QAdAZDOmYw1CPhLB2JCtA==
+  dependencies:
+    "@babel/parser" "^7.1.0"
+    "@babel/types" "^7.0.0"
+
+"@types/babel__traverse@^7.0.4":
+  version "7.0.4"
+  resolved "https://registry.yarnpkg.com/@types/babel__traverse/-/babel__traverse-7.0.4.tgz#de652399bd8493ab712e4d6b68031b7a2f72ad5f"
+  integrity sha512-2vARZYqR4Flf59WtqMfa9GgbOjK04xLZaN9+CMf7Cs+4cAhxZBP3K9LYRzsWxOQe402VvqX9+7DdXxB72ujEOg==
+  dependencies:
+    "@babel/types" "^7.0.0"
+
+"@types/browser-resolve@^0.0.5":
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/@types/browser-resolve/-/browser-resolve-0.0.5.tgz#4d7ea4babcbfa45752a5cdc016c0a0fc4dc4de7d"
+  integrity sha512-3XKWKoP/RsU2Ewg9v2rkE1qmAbKIFR6nxFOsDhY2/J1u3zyDP+2vovKI/7tX1b9RqshAwQiiCsLyQr3dIGw9/w==
+  dependencies:
+    "@types/resolve" "*"
+
+"@types/callsites@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@types/callsites/-/callsites-2.0.0.tgz#df0db68ea34053651caee9975294be902fd04751"
+  integrity sha512-kUvhIE1ZlV4dYEyFnZ2lJLXMEOc7eLN6ejolVBQm0boUCX2t6p0M2nx+20UkEtDMJYtRQffuhcwO1h/U029QAw==
+
+"@types/camelcase@^4.1.0":
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/@types/camelcase/-/camelcase-4.1.0.tgz#e054f7986f31658d49936261b5cd4588ef29d1ee"
+  integrity sha512-nsaprOtNLvUrLyFX5+mRpE9h2Q0d5YzQRr+Lav3fxdYtc1/E/U7G+Ld861NWBDDtWY3MnwKoUOhCrE1nrVxUQA==
+
 "@types/cheerio@^0.22.8":
   version "0.22.9"
   resolved "https://registry.yarnpkg.com/@types/cheerio/-/cheerio-0.22.9.tgz#b5990152604c2ada749b7f88cab3476f21f39d7b"
   integrity sha512-q6LuBI0t5u04f0Q4/R+cGBqIbZMtJkVvCSF+nTfFBBdQqQvJR/mNHeWjRkszyLl7oyf2rDoKUYMEjTw5AV0hiw==
 
+"@types/color-name@*":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@types/color-name/-/color-name-1.1.0.tgz#926f76f7e66f49cc59ad880bb15b030abbf0b66d"
+  integrity sha512-gZ/Rb+MFXF0pXSEQxdRoPMm5jeO3TycjOdvbpbcpHX/B+n9AqaHFe5q6Ga9CsZ7ir/UgIWPfrBzUzn3F19VH/w==
+
+"@types/convert-source-map@^1.5.1":
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/@types/convert-source-map/-/convert-source-map-1.5.1.tgz#d4d180dd6adc5cb68ad99bd56e03d637881f4616"
+  integrity sha512-laiDIXqqthjJlyAMYAXOtN3N8+UlbM+KvZi4BaY5ZOekmVkBs/UxfK5O0HWeJVG2eW8F+Mu2ww13fTX+kY1FlQ==
+
+"@types/detect-newline@^2.1.0":
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/@types/detect-newline/-/detect-newline-2.1.0.tgz#1896b5651b473792b6aba2500270fda626bc38d0"
+  integrity sha512-vcHS4yQkTfy+8QISuAFS+2SCjNcGs37+CWzxrrIOMv7yvPnYd6f1AeUErVEHVCu8dZreAHUqzV8RrjzeBorvtQ==
+
+"@types/diff@^3.5.2":
+  version "3.5.2"
+  resolved "https://registry.yarnpkg.com/@types/diff/-/diff-3.5.2.tgz#bd92300d32675bbe9f7853480730250aa859a90a"
+  integrity sha512-T1y8ed2DipuUGqgzWzBDUMlJM1bD1CG73ETOi08VURsGArjRfC4nqfeC5owrV7SFvgbeKDbonI/Es4vQgJ2IKA==
+
 "@types/estree@0.0.39":
   version "0.0.39"
   resolved "https://registry.yarnpkg.com/@types/estree/-/estree-0.0.39.tgz#e177e699ee1b8c22d23174caaa7422644389509f"
   integrity sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw==
 
+"@types/events@*":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@types/events/-/events-1.2.0.tgz#81a6731ce4df43619e5c8c945383b3e62a89ea86"
+  integrity sha512-KEIlhXnIutzKwRbQkGWb/I4HFqBuUykAdHgDED6xqwXJfONCjF5VoE0cXEiurh3XauygxzeDzgtXUqvLkxFzzA==
+
+"@types/execa@^0.9.0":
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/@types/execa/-/execa-0.9.0.tgz#9b025d2755f17e80beaf9368c3f4f319d8b0fb93"
+  integrity sha512-mgfd93RhzjYBUHHV532turHC2j4l/qxsF/PbfDmprHDEUHmNZGlDn1CEsulGK3AfsPdhkWzZQT/S/k0UGhLGsA==
+  dependencies:
+    "@types/node" "*"
+
+"@types/exit@^0.1.30":
+  version "0.1.30"
+  resolved "https://registry.yarnpkg.com/@types/exit/-/exit-0.1.30.tgz#7078b736a7d166c80b6394dc0d9de1577ca76daf"
+  integrity sha1-cHi3NqfRZsgLY5TcDZ3hV3ynba8=
+
+"@types/fb-watchman@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@types/fb-watchman/-/fb-watchman-2.0.0.tgz#ca60ded406baa8c81c65ac1f86763a5d00aa7c55"
+  integrity sha512-Ao2jlksPEUGCEXBvJz5e2MuDpYUtxXgtUk45cg0g5Mmy4f0j7bQuDlOlqBMgKGRl9dZAK4ZTzFtukuzj2mURlQ==
+  dependencies:
+    "@types/events" "*"
+
+"@types/glob@*", "@types/glob@^7.1.1":
+  version "7.1.1"
+  resolved "https://registry.yarnpkg.com/@types/glob/-/glob-7.1.1.tgz#aa59a1c6e3fbc421e07ccd31a944c30eba521575"
+  integrity sha512-1Bh06cbWJUHMC97acuD6UMG29nMt0Aqz1vF3guLfG+kHHJhy3AyohZFFxYk2f7Q1SQIrNwvncxAE0N/9s70F2w==
+  dependencies:
+    "@types/events" "*"
+    "@types/minimatch" "*"
+    "@types/node" "*"
+
+"@types/graceful-fs@^4.1.2":
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/@types/graceful-fs/-/graceful-fs-4.1.2.tgz#fbc9575dbcc6d1d91dd768d30c5fc0c19f6c50bd"
+  integrity sha512-epDhsJAVxJsWfeqpzEDFhLnhHMbHie/VMFY+2Hvt5p7FemeW5ELM+6gcVYL/ZsUwdu3zrWpDE3VUTddXW+EMYg==
+  dependencies:
+    "@types/node" "*"
+
+"@types/invariant@^2.2.29":
+  version "2.2.29"
+  resolved "https://registry.yarnpkg.com/@types/invariant/-/invariant-2.2.29.tgz#aa845204cd0a289f65d47e0de63a6a815e30cc66"
+  integrity sha512-lRVw09gOvgviOfeUrKc/pmTiRZ7g7oDOU6OAutyuSHpm1/o2RaBQvRhgK8QEdu+FFuw/wnWb29A/iuxv9i8OpQ==
+
+"@types/is-ci@^1.0.10", "@types/is-ci@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@types/is-ci/-/is-ci-1.1.0.tgz#583c5fbfcc461be9971106b9558930d67df49227"
+  integrity sha512-NbyqP5D4hwl5UWnnW4Cz0gIRjhecgx/9OApcCIpp4+tjqjROGf/NBcKKDfbI3YFBTTkD3JBshiNSv5V7VoVJJg==
+
+"@types/istanbul-lib-coverage@*", "@types/istanbul-lib-coverage@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-1.1.0.tgz#2cc2ca41051498382b43157c8227fea60363f94a"
+  integrity sha512-ohkhb9LehJy+PA40rDtGAji61NCgdtKLAlFoYp4cnuuQEswwdK3vz9SOIkkyc3wrk8dzjphQApNs56yyXLStaQ==
+
+"@types/istanbul-lib-instrument@^1.7.2":
+  version "1.7.2"
+  resolved "https://registry.yarnpkg.com/@types/istanbul-lib-instrument/-/istanbul-lib-instrument-1.7.2.tgz#44e61372876597e361148a84537be402f4c9e972"
+  integrity sha512-SWIpdKneXqThfrKIokt9dXSPeslS2NWcxhtr+/a2+N81aLyOMAsVTMmwaKuCoEahcI0FfhY3/79AR6Vilk9i8A==
+  dependencies:
+    "@types/babel-types" "*"
+    "@types/istanbul-lib-coverage" "*"
+    source-map "^0.6.1"
+
+"@types/istanbul-lib-source-maps@^1.2.1":
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/@types/istanbul-lib-source-maps/-/istanbul-lib-source-maps-1.2.1.tgz#c6db98b8b9f0b5aea000f7a8922cc075a85eda9f"
+  integrity sha512-K0IvmTFbI2GjLG0O4AOLPV2hFItE5Bg/TY41IBZIThhLhYthJc3VjpZpM8/sIaIVtnQcX8b2k3muPDvsvhk+Fg==
+  dependencies:
+    "@types/istanbul-lib-coverage" "*"
+    source-map "^0.6.1"
+
 "@types/jest@^23.1.1":
   version "23.3.5"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-23.3.5.tgz#870a1434208b60603745bfd214fc3fc675142364"
   integrity sha512-3LI+vUC3Wju28vbjIjsTKakhMB8HC4l+tMz+Z8WRzVK+kmvezE5jcOvKtBpznWSI5KDLFo+FouUhpTKoekadCA==
 
+"@types/jsdom@^11.12.0":
+  version "11.12.0"
+  resolved "https://registry.yarnpkg.com/@types/jsdom/-/jsdom-11.12.0.tgz#00ddc6f0a1b04c2f5ff6fb23eb59360ca65f12ae"
+  integrity sha512-XHMNZFQ0Ih3A4/NTWAO15+OsQafPKnQCanN0FYGbsTM/EoI5EoEAvvkF51/DQC2BT5low4tomp7k2RLMlriA5Q==
+  dependencies:
+    "@types/events" "*"
+    "@types/node" "*"
+    "@types/tough-cookie" "*"
+    parse5 "^4.0.0"
+
+"@types/json5@^0.0.29":
+  version "0.0.29"
+  resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
+  integrity sha1-7ihweulOEdK4J7y+UnC86n8+ce4=
+
+"@types/leven@^2.1.1":
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/@types/leven/-/leven-2.1.1.tgz#7cdc02ec636f80dc0bb0a53d8ee7eff2d8e8e1d8"
+  integrity sha512-f74SsCQnQzm244o5LHZgSLijrwG5e9BgkMHGbDlQThfh42q5RG4c+RNzUvZ347wAlQYD9kwu64qSNylxZdKs6w==
+
+"@types/merge-stream@^1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@types/merge-stream/-/merge-stream-1.1.2.tgz#a880ff66b1fbbb5eef4958d015c5947a9334dbb1"
+  integrity sha512-7faLmaE99g/yX0Y9pF1neh2IUqOf/fXMOWCVzsXjqI1EJ91lrgXmaBKf6bRWM164lLyiHxHt6t/ZO/cIzq61XA==
+  dependencies:
+    "@types/node" "*"
+
+"@types/micromatch@^2.3.30":
+  version "2.3.30"
+  resolved "https://registry.yarnpkg.com/@types/micromatch/-/micromatch-2.3.30.tgz#c2a143675f200fbcebe57fb0dab0cbf58093d4b0"
+  integrity sha512-6rW4NsUHaDudxJSuRlm1PdNu61CDXkgix7LBOBg7b3yWQ43XANYSPwkvX1cGiZvBVZW8c5rsCEfrfzbPkch8ag==
+  dependencies:
+    "@types/parse-glob" "*"
+
+"@types/minimatch@*":
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
+  integrity sha512-tHq6qdbT9U1IRSGf14CL0pUlULksvY9OZ+5eEgl1N7t+OA3tGvNpxJCzuKQlsNgCVwbAs670L1vcVQi8j9HjnA==
+
+"@types/mkdirp@^0.5.2":
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/@types/mkdirp/-/mkdirp-0.5.2.tgz#503aacfe5cc2703d5484326b1b27efa67a339c1f"
+  integrity sha512-U5icWpv7YnZYGsN4/cmh3WD2onMY0aJIiTE6+51TwJCttdHvtCYmkBNOobHlXwrJRL0nkH9jH4kD+1FAdMN4Tg==
+  dependencies:
+    "@types/node" "*"
+
+"@types/node-notifier@^0.0.28":
+  version "0.0.28"
+  resolved "https://registry.yarnpkg.com/@types/node-notifier/-/node-notifier-0.0.28.tgz#86ba3d3aa8d918352cc3191d88de328b20dc93c1"
+  integrity sha1-hro9OqjZGDUswxkdiN4yiyDck8E=
+  dependencies:
+    "@types/node" "*"
+
 "@types/node@*":
   version "10.12.0"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.12.0.tgz#ea6dcbddbc5b584c83f06c60e82736d8fbb0c235"
   integrity sha512-3TUHC3jsBAB7qVRGxT6lWyYo2v96BMmD2PTcl47H25Lu7UXtFH/2qqmKiVrnel6Ne//0TFYf6uvNX+HW2FRkLQ==
 
+"@types/parse-glob@*":
+  version "3.0.29"
+  resolved "https://registry.yarnpkg.com/@types/parse-glob/-/parse-glob-3.0.29.tgz#6a40ec7ebd2418ee69ee397e48e42169268a10bf"
+  integrity sha1-akDsfr0kGO5p7jl+SOQhaSaKEL8=
+
+"@types/prompts@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@types/prompts/-/prompts-1.2.0.tgz#891e73f735ad5e82e8adae3a99424128e105fb62"
+  integrity sha512-7JXpT2rSd4hqd2oBWU1wfEW6x6gX+qPH+gLzGEx+My3wcb67K9Rc02xNQRVn67phusmXm5Yqn4oTP2OW1G5zdQ==
+
+"@types/resolve@*":
+  version "0.0.8"
+  resolved "https://registry.yarnpkg.com/@types/resolve/-/resolve-0.0.8.tgz#f26074d238e02659e323ce1a13d041eee280e194"
+  integrity sha512-auApPaJf3NPfe18hSoJkp8EbZzer2ISk7o8mCC3M9he/a04+gbMF97NkpD2S8riMGvm4BMRI59/SZQSaLTKpsQ==
+  dependencies:
+    "@types/node" "*"
+
+"@types/rimraf@^2.0.2":
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/@types/rimraf/-/rimraf-2.0.2.tgz#7f0fc3cf0ff0ad2a99bb723ae1764f30acaf8b6e"
+  integrity sha512-Hm/bnWq0TCy7jmjeN5bKYij9vw5GrDFWME4IuxV08278NtU/VdGbzsBohcCUJ7+QMqmUq5hpRKB39HeQWJjztQ==
+  dependencies:
+    "@types/glob" "*"
+    "@types/node" "*"
+
+"@types/sane@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@types/sane/-/sane-2.0.0.tgz#891c272b10d1a6f735e915c731756104b5d21374"
+  integrity sha512-6o/YMfcKcWIK5IAxeo/1DEoVnGKBkPSPj9odxczz2i1gFY78GvguqgtNo28nyKgJUiKEWuFj11acpgdRmRFz7A==
+  dependencies:
+    "@types/node" "*"
+
+"@types/semver@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@types/semver/-/semver-5.5.0.tgz#146c2a29ee7d3bae4bf2fcb274636e264c813c45"
+  integrity sha512-41qEJgBH/TWgo5NFSvBCJ1qkoi3Q6ONSF2avrHq1LVEZfYpdHmj0y9SuTK+u9ZhG1sYQKBL1AWXKyLWP4RaUoQ==
+
+"@types/source-map-support@^0.4.1":
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/@types/source-map-support/-/source-map-support-0.4.1.tgz#ad77158e8c6695a16629ef82b9fb9dfe7c610ac0"
+  integrity sha512-eoyZxYGwaeHq5zCVeoNgY1dQy6dVdm1b7K9k1FRnWkf997Tji3NLBoLAjK5WCobeh1Qs6Q5KUV1rZCmHvzaDBw==
+  dependencies:
+    "@types/node" "*"
+
+"@types/stack-utils@^1.0.1":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@types/stack-utils/-/stack-utils-1.0.1.tgz#0a851d3bd96498fa25c33ab7278ed3bd65f06c3e"
+  integrity sha512-l42BggppR6zLmpfU6fq9HEa2oGPEI8yrSPL3GITjfRInppYFahObbIQOQK3UGxEnyQpltZLaPe75046NOZQikw==
+
+"@types/string-length@^2.0.0":
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/@types/string-length/-/string-length-2.0.0.tgz#358ce3ff2e8c2310270ee192ddd6b79b64fed7b2"
+  integrity sha512-xFwWZpIWcLsrcVEybzxmxQM/26Snj1gqxmVrelC3We3Nub7q70RCtqTBVQ7nL+315fAcw4BGSFpxvMkhLApKmQ==
+
+"@types/strip-bom@3.0.0":
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/@types/strip-bom/-/strip-bom-3.0.0.tgz#14a8ec3956c2e81edb7520790aecf21c290aebd2"
+  integrity sha1-FKjsOVbC6B7bdSB5CuzyHCkK69I=
+
+"@types/supports-color@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@types/supports-color/-/supports-color-5.3.0.tgz#eb6a52e9531fb3ebcd401cec774d1bdfb571f793"
+  integrity sha512-WxwTXnHTIsk7srax1icjLgX+6w1MUAJbhyCpRP/45paEElsPDQUJZDgr1UpKuL2S3Tb+ZyX9MjWwmcSD4bUoOQ==
+
+"@types/tough-cookie@*":
+  version "2.3.4"
+  resolved "https://registry.yarnpkg.com/@types/tough-cookie/-/tough-cookie-2.3.4.tgz#821878b81bfab971b93a265a561d54ea61f9059f"
+  integrity sha512-Set5ZdrAaKI/qHdFlVMgm/GsAv/wkXhSTuZFkJ+JI7HK+wIkIlOaUXSXieIvJ0+OvGIqtREFoE+NHJtEq0gtEw==
+
+"@types/weak@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@types/weak/-/weak-1.0.0.tgz#7b3bf891c4b53e2b8a144b7e41f4b0f6e78c2ba8"
+  integrity sha512-6WXZpeAac3vj5+OfQvlqYEtc88oOgvkcxbrnmBw53Da6gA+MGztL+Hns3BpnyUevgz+4DxsJblgAew1A/tkcng==
+  dependencies:
+    "@types/node" "*"
+
+"@types/which@^1.3.1":
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/@types/which/-/which-1.3.1.tgz#7802c380887986ca909008afea4e08025b130f8d"
+  integrity sha512-ZrJDWpvg75LTGX4XwuneY9s6bF3OeZcGTpoGh3zDV9ytzcHMFsRrMIaLBRJZQMBoGyKs6unBQfVdrLZiYfb1zQ==
+
+"@types/write-file-atomic@^2.1.1":
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/@types/write-file-atomic/-/write-file-atomic-2.1.1.tgz#7f9fcd6c5c8d194dba03472e3fa6cb29a839764c"
+  integrity sha512-mROQhTxpJsOm/S0eOxDHUy5WJ0yS8fmqsq/s+u5OuAh1TxBFSqVBTkLjbyxDPcKh7DeJXk0OYrCkxXlkf8zu1g==
+  dependencies:
+    "@types/node" "*"
+
+"@types/yargs@^12.0.2":
+  version "12.0.2"
+  resolved "https://registry.yarnpkg.com/@types/yargs/-/yargs-12.0.2.tgz#7569157b2601d49d4442023c0d22f81d23f62d1e"
+  integrity sha512-NUyxaQW48vjeDHybmhy7CFx/6of1+PoaEGPMI+0PzBVr5s3BTELT7gV4lNaxUsKllNS1YAjkeTEhBtzIDWs2WQ==
+
 JSONStream@^1.0.3, JSONStream@^1.0.4, JSONStream@^1.3.4:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/JSONStream/-/JSONStream-1.3.5.tgz#3208c1f08d3a4d99261ab64f92302bc15e111ca0"
@@ -2505,7 +2819,7 @@ babel-types@^6.24.1, babel-types@^6.26.0:
     lodash "^4.17.4"
     to-fast-properties "^1.0.3"
 
-babylon@^6.15.0, babylon@^6.17.4, babylon@^6.18.0:
+babylon@^6.17.4, babylon@^6.18.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.18.0.tgz#af2f3b88fa6f5c1e4c634d1a0f8eac4f55b395e3"
   integrity sha512-q/UEjfGJ2Cm3oKV71DJz9d25TPnq5rhBVL2Q4fA5wcC3jcrdn7+SssEybFIxwAvvP+YCsCYNKughoF33GxgycQ==
@@ -4203,10 +4517,10 @@ debug@^3.1.0:
   dependencies:
     ms "^2.1.1"
 
-debug@^4.0.1:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.0.tgz#373687bffa678b38b1cd91f861b63850035ddc87"
-  integrity sha512-heNPJUJIqC+xB6ayLAMHaIrmN9HKa7aQO8MGqKpvCA+uJYVcvR6l5kgdrhRuwPFHU7P5/A1w0BjByPHwpfTDKg==
+debug@^4.0.1, debug@^4.1.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  integrity sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==
   dependencies:
     ms "^2.1.1"
 
@@ -4325,7 +4639,7 @@ deep-is@~0.1.3:
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
   integrity sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=
 
-deepmerge@^2.1.1:
+deepmerge@^2.0.1, deepmerge@^2.1.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-2.2.1.tgz#5d3ff22a01c00f645405a2fbc17d0778a1801170"
   integrity sha512-R9hc1Xa/NOBi9WRVUWg19rl1UB7Tt4kuPd+thNJgFZoxXsTz7ncaPaeIm+40oSGuP33DfMb4sZt1QIGiJzC4EA==
@@ -5025,6 +5339,15 @@ eslint-import-resolver-node@^0.3.1:
     debug "^2.6.9"
     resolve "^1.5.0"
 
+eslint-import-resolver-typescript@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/eslint-import-resolver-typescript/-/eslint-import-resolver-typescript-1.1.1.tgz#e6d42172b95144ef16610fe104ef38340edea591"
+  integrity sha512-jqSfumQ+H5y3FUJ6NjRkbOQSUOlbBucGTN3ELymOtcDBbPjVdm/luvJuCfCaIXGh8sEF26ma1qVdtDgl9ndhUg==
+  dependencies:
+    debug "^4.0.1"
+    resolve "^1.4.0"
+    tsconfig-paths "^3.6.0"
+
 eslint-module-utils@^2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/eslint-module-utils/-/eslint-module-utils-2.2.0.tgz#b270362cd88b1a48ad308976ce7fa54e98411746"
@@ -5234,11 +5557,6 @@ estraverse@^4.0.0, estraverse@^4.1.0, estraverse@^4.1.1, estraverse@^4.2.0:
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.2.0.tgz#0dee3fed31fcd469618ce7342099fc1afa0bdb13"
   integrity sha1-De4/7TH81GlhjOc0IJn8GvoL2xM=
 
-estree-walker@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-0.2.1.tgz#bdafe8095383d8414d5dc2ecf4c9173b6db9412e"
-  integrity sha1-va/oCVOD2EFNXcLs9MkXO225QS4=
-
 estree-walker@^0.5.2:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-0.5.2.tgz#d3850be7529c9580d815600b53126515e146dd39"
@@ -5831,14 +6149,6 @@ flow-bin@^0.85.0:
   resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.85.0.tgz#a3ca80748a35a071d5bbb2fcd61d64d977fc53a6"
   integrity sha512-ougBA2q6Rn9sZrjZQ9r5pTFxCotlGouySpD2yRIuq5AYwwfIT8HHhVMeSwrN5qJayjHINLJyrnsSkkPCZyfMrQ==
 
-flow-remove-types@^1.1.0:
-  version "1.2.3"
-  resolved "https://registry.yarnpkg.com/flow-remove-types/-/flow-remove-types-1.2.3.tgz#6131aefc7da43364bb8b479758c9dec7735d1a18"
-  integrity sha512-ypq/U3V+t9atYiOuSJd40tekCra03EHKoRsiK/wXGrsZimuum0kdwVY7Yv0HTaoXgHW1WiayomYd+Q3kkvPl9Q==
-  dependencies:
-    babylon "^6.15.0"
-    vlq "^0.2.1"
-
 flush-write-stream@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/flush-write-stream/-/flush-write-stream-1.0.3.tgz#c5d586ef38af6097650b49bc41b55fabb19f35bd"
@@ -7839,11 +8149,25 @@ json3@^3.3.2:
   resolved "https://registry.yarnpkg.com/json3/-/json3-3.3.2.tgz#3c0434743df93e2f5c42aee7b19bcb483575f4e1"
   integrity sha1-PAQ0dD35Pi9cQq7nsZvLSDV19OE=
 
-json5@^0.5.0, json5@^0.5.1:
+json5@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
   integrity sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=
 
+json5@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-1.0.1.tgz#779fb0018604fa854eacbf6252180d83543e3dbe"
+  integrity sha512-aKS4WQjPenRxiQsC93MNfjx+nbF4PAdYzmd/1JIj8HYzqfbu86beTuNgXDzPknWk0n0uARlyewZo4s++ES36Ow==
+  dependencies:
+    minimist "^1.2.0"
+
+json5@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-2.1.0.tgz#e7a0c62c48285c628d20a10b85c89bb807c32850"
+  integrity sha512-8Mh9h6xViijj36g7Dxi+Y4S6hNGV96vcJZr/SrlHh1LR/pEn/8j/+qIBbs44YKl69Lrfctp4QD+AdWLTMqEZAQ==
+  dependencies:
+    minimist "^1.2.0"
+
 jsonfile@^2.1.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-2.4.0.tgz#3736a2b428b87bbda0cc83b53fa3d633a35c2ae8"
@@ -10047,7 +10371,7 @@ parse-passwd@^1.0.0:
   resolved "https://registry.yarnpkg.com/parse-passwd/-/parse-passwd-1.0.0.tgz#6d5b934a456993b23d37f40a382d6f1666a8e5c6"
   integrity sha1-bVuTSkVpk7I9N/QKOC1vFmao5cY=
 
-parse5@4.0.0:
+parse5@4.0.0, parse5@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/parse5/-/parse5-4.0.0.tgz#6d78656e3da8d78b4ec0b906f7c08ef1dfe3f608"
   integrity sha512-VrZ7eOd3T1Fk4XWNXMgiGBK/z0MG48BWG2uQNU4I72fkQuKUTZpl+u9k+CxEG0twMVzSmXEEz12z5Fnw1jIQFA==
@@ -11592,10 +11916,10 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     hash-base "^3.0.0"
     inherits "^2.0.1"
 
-rollup-plugin-babel@^4.0.0:
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-babel/-/rollup-plugin-babel-4.0.3.tgz#8282b0e22233160d679e9c7631342e848422fb02"
-  integrity sha512-/PP0MgbPQyRywI4zRIJim6ySjTcOLo4kQbEbROqp9kOR3kHC3FeU++QpBDZhS2BcHtJTVZMVbBV46flbBN5zxQ==
+rollup-plugin-babel@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-babel/-/rollup-plugin-babel-4.1.0.tgz#c97f50c82aa8e89ddaa116cdc5c832b8ba74db17"
+  integrity sha512-4IYv/yTNyH4P/Cma1mWdqy42gc051i1mTe/6oe8F055WzJGSb2qs1mSDwZTo93wA6kMBgHBIR/OcBk7JMnL59Q==
   dependencies:
     "@babel/helper-module-imports" "^7.0.0"
     rollup-pluginutils "^2.3.0"
@@ -11610,14 +11934,6 @@ rollup-plugin-commonjs@^9.1.8:
     resolve "^1.8.1"
     rollup-pluginutils "^2.3.3"
 
-rollup-plugin-flow@^1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-flow/-/rollup-plugin-flow-1.1.1.tgz#6ce568f1dd559666b77ab76b4bae251407528db6"
-  integrity sha1-bOVo8d1Vlma3erdrS64lFAdSjbY=
-  dependencies:
-    flow-remove-types "^1.1.0"
-    rollup-pluginutils "^1.5.1"
-
 rollup-plugin-json@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/rollup-plugin-json/-/rollup-plugin-json-3.1.0.tgz#7c1daf60c46bc21021ea016bd00863561a03321b"
@@ -11656,14 +11972,6 @@ rollup-plugin-node-resolve@^3.4.0:
     is-module "^1.0.0"
     resolve "^1.1.6"
 
-rollup-pluginutils@^1.5.1:
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/rollup-pluginutils/-/rollup-pluginutils-1.5.2.tgz#1e156e778f94b7255bfa1b3d0178be8f5c552408"
-  integrity sha1-HhVud4+UtyVb+hs9AXi+j1xVJAg=
-  dependencies:
-    estree-walker "^0.2.1"
-    minimatch "^3.0.2"
-
 rollup-pluginutils@^2.3.0, rollup-pluginutils@^2.3.1, rollup-pluginutils@^2.3.3:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/rollup-pluginutils/-/rollup-pluginutils-2.3.3.tgz#3aad9b1eb3e7fe8262820818840bf091e5ae6794"
@@ -12994,6 +13302,17 @@ truncate-html@^1.0.1:
     "@types/cheerio" "^0.22.8"
     cheerio "0.22.0"
 
+tsconfig-paths@^3.6.0:
+  version "3.7.0"
+  resolved "https://registry.yarnpkg.com/tsconfig-paths/-/tsconfig-paths-3.7.0.tgz#02ae978db447b22e09dafcd4198be95c4885ceb2"
+  integrity sha512-7iE+Q/2E1lgvxD+c0Ot+GFFmgmfIjt/zCayyruXkXQ84BLT85gHXy0WSoQSiuFX9+d+keE/jiON7notV74ZY+A==
+  dependencies:
+    "@types/json5" "^0.0.29"
+    deepmerge "^2.0.1"
+    json5 "^1.0.1"
+    minimist "^1.2.0"
+    strip-bom "^3.0.0"
+
 tslib@^1.8.0, tslib@^1.9.0:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"
@@ -13046,10 +13365,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^3.0.0, typescript@^3.0.3:
-  version "3.1.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.1.3.tgz#01b70247a6d3c2467f70c45795ef5ea18ce191d5"
-  integrity sha512-+81MUSyX+BaSo+u2RbozuQk/UWx6hfG0a5gHu4ANEM4sU96XbuIyAB+rWBW1u70c6a5QuZfuYICn3s2UjuHUpA==
+typescript@^3.0.0, typescript@^3.2.2:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.2.2.tgz#fe8101c46aa123f8353523ebdcf5730c2ae493e5"
+  integrity sha512-VCj5UiSyHBjwfYacmDuc/NOk4QQixbE+Wn7MFJuS0nRuPQbof132Pw4u53dm264O8LPc2MVsc7RJNml5szurkg==
 
 ua-parser-js@^0.7.18:
   version "0.7.18"
@@ -13499,7 +13818,7 @@ vinyl@^1.0.0:
     clone-stats "^0.0.1"
     replace-ext "0.0.1"
 
-vlq@^0.2.1, vlq@^0.2.2:
+vlq@^0.2.2:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/vlq/-/vlq-0.2.3.tgz#8f3e4328cf63b1540c0d67e1b2778386f8975b26"
   integrity sha512-DRibZL6DsNhIgYQ+wNdWDL2SL3bKPlVrRiBqV5yuMm++op8W4kGFtaQfCs4KEJn0wBZcHVHJ3eoywX8983k1ow==