| 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-import-in-document'] |
|
|
| const tests = { |
| valid: [ |
| { |
| code: `import Document, { Html, Head, Main, NextScript } from 'next/document' |
| |
| class MyDocument extends Document { |
| static async getInitialProps(ctx) { |
| //... |
| } |
| |
| render() { |
| return ( |
| <Html> |
| <Head> |
| </Head> |
| </Html> |
| ) |
| } |
| } |
| |
| export default MyDocument |
| `, |
| filename: 'pages/_document.tsx', |
| }, |
| { |
| code: `import Head from "next/head"; |
| |
| export default function IndexPage() { |
| return ( |
| <Head> |
| <title>My page title</title> |
| <meta name="viewport" content="initial-scale=1.0, width=device-width" /> |
| </Head> |
| ); |
| } |
| `, |
| filename: 'pages/index.tsx', |
| }, |
| ], |
| invalid: [ |
| { |
| code: ` |
| import Document, { Html, Main, NextScript } from 'next/document' |
| import Head from 'next/head' |
| |
| class MyDocument extends Document { |
| render() { |
| return ( |
| <Html> |
| <Head /> |
| <body> |
| <Main /> |
| <NextScript /> |
| </body> |
| </Html> |
| ) |
| } |
| } |
| |
| export default MyDocument |
| `, |
| filename: 'pages/_document.js', |
| errors: [ |
| { |
| message: |
| '`next/head` should not be imported in `pages/_document.js`. Use `<Head />` from `next/document` instead. See: https://nextjs.org/docs/messages/no-head-import-in-document', |
| type: 'ImportDeclaration', |
| }, |
| ], |
| }, |
| { |
| code: ` |
| import Document, { Html, Main, NextScript } from 'next/document' |
| import Head from 'next/head' |
| |
| class MyDocument extends Document { |
| render() { |
| return ( |
| <Html> |
| <Head /> |
| <body> |
| <Main /> |
| <NextScript /> |
| </body> |
| </Html> |
| ) |
| } |
| } |
| |
| export default MyDocument |
| `, |
| filename: 'pages/_document.page.tsx', |
| errors: [ |
| { |
| message: |
| '`next/head` should not be imported in `pages/_document.page.tsx`. Use `<Head />` from `next/document` instead. See: https://nextjs.org/docs/messages/no-head-import-in-document', |
| type: 'ImportDeclaration', |
| }, |
| ], |
| }, |
| { |
| code: ` |
| import Document, { Html, Main, NextScript } from 'next/document' |
| import Head from 'next/head' |
| |
| class MyDocument extends Document { |
| render() { |
| return ( |
| <Html> |
| <Head /> |
| <body> |
| <Main /> |
| <NextScript /> |
| </body> |
| </Html> |
| ) |
| } |
| } |
| |
| export default MyDocument |
| `, |
| filename: 'pages/_document/index.js', |
| errors: [ |
| { |
| message: |
| '`next/head` should not be imported in `pages/_document/index.js`. Use `<Head />` from `next/document` instead. See: https://nextjs.org/docs/messages/no-head-import-in-document', |
| type: 'ImportDeclaration', |
| }, |
| ], |
| }, |
| { |
| code: ` |
| import Document, { Html, Main, NextScript } from 'next/document' |
| import Head from 'next/head' |
| |
| class MyDocument extends Document { |
| render() { |
| return ( |
| <Html> |
| <Head /> |
| <body> |
| <Main /> |
| <NextScript /> |
| </body> |
| </Html> |
| ) |
| } |
| } |
| |
| export default MyDocument |
| `, |
| filename: 'pages/_document/index.tsx', |
| errors: [ |
| { |
| message: |
| '`next/head` should not be imported in `pages/_document/index.tsx`. Use `<Head />` from `next/document` instead. See: https://nextjs.org/docs/messages/no-head-import-in-document', |
| type: 'ImportDeclaration', |
| }, |
| ], |
| }, |
| ], |
| } |
|
|
| describe('no-head-import-in-document', () => { |
| 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) |
| }) |
|
|
