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