[docs] Prefer export default

Author: oliviertassinari

docs/pages/_document.js

@@ -28,7 +28,7 @@ if (process.env.NODE_ENV === 'production') {
 
 const GOOGLE_ID = process.env.NODE_ENV === 'production' ? 'UA-106598593-2' : 'UA-106598593-3';
 
-class MyDocument extends Document {
+export default class MyDocument extends Document {
   render() {
     const { canonical, userLanguage } = this.props;
 
@@ -152,5 +152,3 @@ MyDocument.getInitialProps = async ctx => {
     ),
   };
 };
-
-export default MyDocument;

docs/pages/premium-themes/onepirate/forgot-password.js

@@ -2,12 +2,10 @@ import React from 'react';
 import AppTheme from 'docs/src/modules/components/AppTheme';
 import ForgotPassword from 'docs/src/pages/premium-themes/onepirate/ForgotPassword';
 
-function Page() {
+export default function Page() {
   return (
     <AppTheme title="Onepirate theme - Material-UI" description="A onepirate theme">
       <ForgotPassword />
     </AppTheme>
   );
 }
-
-export default Page;

docs/pages/premium-themes/onepirate/index.js

@@ -2,12 +2,10 @@ import React from 'react';
 import AppTheme from 'docs/src/modules/components/AppTheme';
 import Home from 'docs/src/pages/premium-themes/onepirate/Home';
 
-function Page() {
+export default function Page() {
   return (
     <AppTheme title="Onepirate theme - Material-UI" description="A onepirate theme">
       <Home />
     </AppTheme>
   );
 }
-
-export default Page;

docs/pages/premium-themes/onepirate/privacy.js

@@ -2,12 +2,10 @@ import React from 'react';
 import AppTheme from 'docs/src/modules/components/AppTheme';
 import Privacy from 'docs/src/pages/premium-themes/onepirate/Privacy';
 
-function Page() {
+export default function Page() {
   return (
     <AppTheme title="Onepirate theme - Material-UI" description="A onepirate theme">
       <Privacy />
     </AppTheme>
   );
 }
-
-export default Page;

docs/pages/premium-themes/onepirate/sign-in.js

@@ -2,12 +2,10 @@ import React from 'react';
 import AppTheme from 'docs/src/modules/components/AppTheme';
 import SignIn from 'docs/src/pages/premium-themes/onepirate/SignIn';
 
-function Page() {
+export default function Page() {
   return (
     <AppTheme title="Onepirate theme - Material-UI" description="A onepirate theme">
       <SignIn />
     </AppTheme>
   );
 }
-
-export default Page;

docs/pages/premium-themes/onepirate/sign-up.js

@@ -2,12 +2,10 @@ import React from 'react';
 import AppTheme from 'docs/src/modules/components/AppTheme';
 import SignUp from 'docs/src/pages/premium-themes/onepirate/SignUp';
 
-function Page() {
+export default function Page() {
   return (
     <AppTheme title="Onepirate theme - Material-UI" description="A onepirate theme">
       <SignUp />
     </AppTheme>
   );
 }
-
-export default Page;

docs/pages/premium-themes/onepirate/terms.js

@@ -2,12 +2,10 @@ import React from 'react';
 import AppTheme from 'docs/src/modules/components/AppTheme';
 import Terms from 'docs/src/pages/premium-themes/onepirate/Terms';
 
-function Page() {
+export default function Page() {
   return (
     <AppTheme title="Onepirate theme - Material-UI" description="A onepirate theme">
       <Terms />
     </AppTheme>
   );
 }
-
-export default Page;

docs/pages/premium-themes/paperbase/index.js

@@ -2,7 +2,7 @@ import React from 'react';
 import AppTheme from 'docs/src/modules/components/AppTheme';
 import Paperbase from 'docs/src/pages/premium-themes/paperbase/Paperbase';
 
-function Page() {
+export default function Page() {
   return (
     <AppTheme
       title="Paperbase theme - Material-UI"
@@ -13,5 +13,3 @@ function Page() {
     </AppTheme>
   );
 }
-
-export default Page;

docs/src/pages/components/css-baseline/css-baseline.md

@@ -12,16 +12,14 @@ You might be familiar with [normalize.css](https://github.com/necolas/normalize.
 import React from 'react';
 import CssBaseline from '@material-ui/core/CssBaseline';
 
-function MyApp() {
+export default function MyApp() {
   return (
     <React.Fragment>
       <CssBaseline />
       {/* The rest of your application */}
     </React.Fragment>
   );
 }
-
-export default MyApp;
 ```
 
 ## Approach

docs/src/pages/guides/interoperability/StyledComponentsTheme.js

@@ -44,7 +44,7 @@ const StyledButton = styled.button`
   }
 `;
 
-function StyledComponentsTheme() {
+export default function StyledComponentsTheme() {
   return (
     <NoSsr>
       <ThemeProvider theme={defaultTheme}>
@@ -53,5 +53,3 @@ function StyledComponentsTheme() {
     </NoSsr>
   );
 }
-
-export default StyledComponentsTheme;