| import { RuleTester as ESLintTesterV8 } from 'eslint-v8' |
| import { RuleTester as ESLintTesterV9 } from 'eslint' |
| import { rules } from '@next/eslint-plugin-next' |
|
|
| const NextESLintRule = rules['no-head-element'] |
|
|
| const message = |
| 'Do not use `<head>` element. Use `<Head />` from `next/head` instead. See: https://nextjs.org/docs/messages/no-head-element' |
|
|
| const tests = { |
| valid: [ |
| { |
| code: `import Head from 'next/head'; |
| |
| export class MyComponent { |
| render() { |
| return ( |
| <div> |
| <Head> |
| <title>My page title</title> |
| </Head> |
| </div> |
| ); |
| } |
| } |
| `, |
| filename: 'pages/index.js', |
| }, |
| { |
| code: `import Head from 'next/head'; |
| |
| export class MyComponent { |
| render() { |
| return ( |
| <div> |
| <Head> |
| <title>My page title</title> |
| </Head> |
| </div> |
| ); |
| } |
| } |
| `, |
| filename: 'pages/index.tsx', |
| }, |
| { |
| code: ` |
| export default function Layout({ children }) { |
| return ( |
| <html> |
| <head> |
| <title>layout</title> |
| </head> |
| <body>{children}</body> |
| </html> |
| ); |
| } |
| `, |
| filename: './app/layout.js', |
| }, |
| ], |
| invalid: [ |
| { |
| code: ` |
| export class MyComponent { |
| render() { |
| return ( |
| <div> |
| <head> |
| <title>My page title</title> |
| </head> |
| </div> |
| ); |
| } |
| }`, |
| filename: './pages/index.js', |
| errors: [ |
| { |
| message, |
| type: 'JSXOpeningElement', |
| }, |
| ], |
| }, |
| { |
| code: `import Head from 'next/head'; |
| |
| export class MyComponent { |
| render() { |
| return ( |
| <div> |
| <head> |
| <title>My page title</title> |
| </head> |
| <Head> |
| <title>My page title</title> |
| </Head> |
| </div> |
| ); |
| } |
| }`, |
| filename: 'pages/index.ts', |
| errors: [ |
| { |
| message, |
| type: 'JSXOpeningElement', |
| }, |
| ], |
| }, |
| ], |
| } |
|
|
| describe('no-head-element', () => { |
| new ESLintTesterV8({ |
| parserOptions: { |
| ecmaVersion: 2018, |
| sourceType: 'module', |
| ecmaFeatures: { |
| modules: true, |
| jsx: true, |
| }, |
| }, |
| }).run('eslint-v8', NextESLintRule, tests) |
|
|
| new ESLintTesterV9({ |
| languageOptions: { |
| ecmaVersion: 2018, |
| sourceType: 'module', |
| parserOptions: { |
| ecmaFeatures: { |
| modules: true, |
| jsx: true, |
| }, |
| }, |
| }, |
| }).run('eslint-v9', NextESLintRule, tests) |
| }) |
|
|
