diff --git a/UPGRADING.md b/UPGRADING.md
index 5cb8c2c5674956..cf5605e8eaebe8 100644
--- a/UPGRADING.md
+++ b/UPGRADING.md
@@ -17,16 +17,19 @@ The following types are different:
 > This list was created by the community to help you upgrade, if you find other differences please send a pull-request to this list to help other users.
 
 From:
+
 ```tsx
-import { NextContext } from "next";
-import { NextAppContext } from "next/app";
-import { NextDocumentContext } from "next/document";
+import { NextContext } from 'next'
+import { NextAppContext } from 'next/app'
+import { NextDocumentContext } from 'next/document'
 ```
+
 to
+
 ```tsx
-import { NextPageContext } from "next";
-import { AppContext } from "next/app";
-import { DocumentContext } from "next/document";
+import { NextPageContext } from 'next'
+import { AppContext } from 'next/app'
+import { DocumentContext } from 'next/document'
 ```
 
 #### The `config` key is now a special export on a page
diff --git a/errors/next-dynamic-modules.md b/errors/next-dynamic-modules.md
index 6d2fbbd4d98bfd..74838f30297663 100644
--- a/errors/next-dynamic-modules.md
+++ b/errors/next-dynamic-modules.md
@@ -11,6 +11,7 @@ Updating code that relies on this behavior is relatively straightforward! We've
 Migrate to using separate dynamic calls for each module.
 
 Before
+
 ```js
 import dynamic from 'next/dynamic'
 
@@ -40,6 +41,7 @@ export default DynamicBundle
 ```
 
 After
+
 ```js
 import dynamic from 'next/dynamic'
 
diff --git a/examples/blog-starter/pages/about.mdx b/examples/blog-starter/pages/about.mdx
index d3362fd7d926d7..853ef5bdf87d43 100644
--- a/examples/blog-starter/pages/about.mdx
+++ b/examples/blog-starter/pages/about.mdx
@@ -4,7 +4,8 @@ import Page from '../components/layouts/page'
 
 export const meta = {
   title: 'About',
-  summary: 'Hi! This is a placeholder page. I thought that the header was too empty so I wanted to add an element to show how to add additional pages and put a small navigation here.',
+  summary:
+    'Hi! This is a placeholder page. I thought that the header was too empty so I wanted to add an element to show how to add additional pages and put a small navigation here.',
 }
 
 export default withRouter(({ children, router }) => (
diff --git a/examples/custom-server-hapi/next-wrapper.js b/examples/custom-server-hapi/next-wrapper.js
index 5e0548f6a2772a..072a6945123411 100644
--- a/examples/custom-server-hapi/next-wrapper.js
+++ b/examples/custom-server-hapi/next-wrapper.js
@@ -11,7 +11,10 @@ const defaultHandlerWrapper = app => async ({ raw: { req, res }, url }, h) => {
   return h.response(html).code(res.statusCode)
 }
 
-const pathWrapper = (app, pathName, opts) => async ({ raw, query, params }, h) => {
+const pathWrapper = (app, pathName, opts) => async (
+  { raw, query, params },
+  h
+) => {
   const html = await app.renderToHTML(
     raw.req,
     raw.res,
diff --git a/examples/custom-server-typescript/nodemon.json b/examples/custom-server-typescript/nodemon.json
index 7ece2818d72465..00ea83db9500e4 100644
--- a/examples/custom-server-typescript/nodemon.json
+++ b/examples/custom-server-typescript/nodemon.json
@@ -2,4 +2,4 @@
   "watch": ["server", "static"],
   "exec": "ts-node --project tsconfig.server.json server/index.ts",
   "ext": "js ts"
-}
\ No newline at end of file
+}
diff --git a/examples/with-rbx-bulma-pro/README.md b/examples/with-rbx-bulma-pro/README.md
index 9ff957939c6c9d..5dd50b6911d436 100644
--- a/examples/with-rbx-bulma-pro/README.md
+++ b/examples/with-rbx-bulma-pro/README.md
@@ -1,24 +1,28 @@
 # rbx & bulma-pro example
 
 ## How to use
+
 ### Using `create-next-app`
 
 Execute create-next-app with yarn or npm to bootstrap the example:
+
 ```
 npm create-next-app --example with-rbx-bulma-pro with-rbx-bulma-pro-app
 # or
 yarn create next-app --example with-rbx-bulma-pro with-rbx-bulma-pro-app
 ```
 
-
 ### Download manually
+
 Download the example:
+
 ```
 curl https://codeload.github.com/zeit/next.js/tar.gz/canary | tar -xz --strip=2 next.js-canary/examples/with-rbx-bulma-pro
 cd with-rbx-bulma-pro
 ```
 
 Install it and run:
+
 ```
 npm install
 npm run dev
diff --git a/examples/with-typescript/utils/sample-api.ts b/examples/with-typescript/utils/sample-api.ts
index b220434d4d2ae2..a326dfa976fa2e 100644
--- a/examples/with-typescript/utils/sample-api.ts
+++ b/examples/with-typescript/utils/sample-api.ts
@@ -5,7 +5,7 @@ export const dataArray: User[] = [
   { id: 101, name: 'Alice' },
   { id: 102, name: 'Bob' },
   { id: 103, name: 'Caroline' },
-  { id: 104, name: 'Dave' }
+  { id: 104, name: 'Dave' },
 ]
 
 /**
@@ -13,7 +13,7 @@ export const dataArray: User[] = [
  *
  * Throws an error if not found.
  */
-export async function findData (id: number | string) {
+export async function findData(id: number | string) {
   const selected = dataArray.find(data => data.id === Number(id))
 
   if (!selected) {
@@ -24,7 +24,7 @@ export async function findData (id: number | string) {
 }
 
 /** Calls a mock API which returns the above array to simulate "get all". */
-export async function findAll () {
+export async function findAll() {
   // Throw an error, just for example.
   if (!Array.isArray(dataArray)) {
     throw new Error('Cannot find users')
diff --git a/packages/next/build/babel/preset.ts b/packages/next/build/babel/preset.ts
index 5300ea439a3d83..5b1b0168fa9c74 100644
--- a/packages/next/build/babel/preset.ts
+++ b/packages/next/build/babel/preset.ts
@@ -7,7 +7,7 @@ const isTest = env === 'test'
 type StyledJsxPlugin = [string, any] | string
 type StyledJsxBabelOptions =
   | {
-      plugins?: StyledJsxPlugin[],
+      plugins?: StyledJsxPlugin[]
       'babel-test'?: boolean
     }
   | undefined
@@ -119,7 +119,12 @@ module.exports = (
           ...options['transform-runtime'],
         },
       ],
-      [(isTest && options['styled-jsx'] && options['styled-jsx']['babel-test']) ? require('styled-jsx/babel-test') : require('styled-jsx/babel'), styledJsxOptions(options['styled-jsx'])],
+      [
+        isTest && options['styled-jsx'] && options['styled-jsx']['babel-test']
+          ? require('styled-jsx/babel-test')
+          : require('styled-jsx/babel'),
+        styledJsxOptions(options['styled-jsx']),
+      ],
       require('./plugins/amp-attributes'),
       isProduction && [
         require('babel-plugin-transform-react-remove-prop-types'),
diff --git a/test/integration/api-support/big.json b/test/integration/api-support/big.json
index 60dff4d5aca947..6e4694f35d7872 100644
--- a/test/integration/api-support/big.json
+++ b/test/integration/api-support/big.json
@@ -61,15 +61,7 @@
     "registered": "2014-07-30T10:07:08 -02:00",
     "latitude": -9.239109,
     "longitude": 123.085402,
-    "tags": [
-      "incididunt",
-      "laboris",
-      "culpa",
-      "non",
-      "sint",
-      "sunt",
-      "et"
-    ],
+    "tags": ["incididunt", "laboris", "culpa", "non", "sint", "sunt", "et"],
     "friends": [
       {
         "id": 0,
@@ -190,15 +182,7 @@
     "registered": "2017-03-03T08:55:12 -01:00",
     "latitude": -54.522447,
     "longitude": -80.499064,
-    "tags": [
-      "officia",
-      "non",
-      "culpa",
-      "non",
-      "deserunt",
-      "ex",
-      "velit"
-    ],
+    "tags": ["officia", "non", "culpa", "non", "deserunt", "ex", "velit"],
     "friends": [
       {
         "id": 0,
@@ -300,4 +284,4 @@
       }
     ]
   }
-]
\ No newline at end of file
+]
diff --git a/test/integration/dynamic-routing/pages/[post]/[comment].js b/test/integration/dynamic-routing/pages/[post]/[comment].js
index d45987e388bd0d..f0832aba77e905 100644
--- a/test/integration/dynamic-routing/pages/[post]/[comment].js
+++ b/test/integration/dynamic-routing/pages/[post]/[comment].js
@@ -15,9 +15,7 @@ const $comment = ({ gipQuery }) => {
 }
 
 $comment.getInitialProps = async ({ query }) => {
-  return {
-    gipQuery: query
-  }
+  return { gipQuery: query }
 }
 
 export default $comment
diff --git a/test/integration/export/pages/blog/[post]/comment/[id].js b/test/integration/export/pages/blog/[post]/comment/[id].js
index 883c6b39750c82..e23ec345283f54 100644
--- a/test/integration/export/pages/blog/[post]/comment/[id].js
+++ b/test/integration/export/pages/blog/[post]/comment/[id].js
@@ -6,9 +6,7 @@ const Page = () => {
 
   return (
     <>
-      <p>
-        {`Blog post ${post} comment ${id || '(all)'}`}
-      </p>
+      <p>{`Blog post ${post} comment ${id || '(all)'}`}</p>
     </>
   )
 }