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import { RuleTester as ESLintTesterV8 } from 'eslint-v8'
import { RuleTester as ESLintTesterV9 } from 'eslint'
import { rules } from '@next/eslint-plugin-next'
const NextESLintRule = rules['no-styled-jsx-in-document']
const tests = {
valid: [
{
filename: 'pages/_document.js',
code: `import Document, { Html, Head, Main, NextScript } from 'next/document'
export class MyDocument extends Document {
static async getInitialProps(ctx) {
const initialProps = await Document.getInitialProps(ctx)
return { ...initialProps }
}
render() {
return (
<Html>
<Head />
<body>
<Main />
<NextScript />
</body>
</Html>
)
}
}`,
},
{
filename: 'pages/_document.js',
code: `import Document, { Html, Head, Main, NextScript } from 'next/document'
export class MyDocument extends Document {
static async getInitialProps(ctx) {
const initialProps = await Document.getInitialProps(ctx)
return { ...initialProps }
}
render() {
return (
<Html>
<Head />
<style>{"\
body{\
color:red;\
}\
"}</style>
<style {...{nonce: '123' }}></style>
<body>
<Main />
<NextScript />
</body>
</Html>
)
}
}`,
},
{
filename: 'pages/index.js',
code: `
export default function Page() {
return (
<>
<p>Hello world</p>
<style jsx>{\`
p {
color: orange;
}
\`}</style>
</>
)
}
`,
},
],
invalid: [
{
filename: 'pages/_document.js',
code: `
import Document, { Html, Head, Main, NextScript } from 'next/document'
export class MyDocument extends Document {
static async getInitialProps(ctx) {
const initialProps = await Document.getInitialProps(ctx)
return { ...initialProps }
}
render() {
return (
<Html>
<Head />
<style jsx>{"\
body{\
color:red;\
}\
"}</style>
<body>
<Main />
<NextScript />
</body>
</Html>
)
}
}`,
errors: [
{
message: `\`styled-jsx\` should not be used in \`pages/_document.js\`. See: https://nextjs.org/docs/messages/no-styled-jsx-in-document`,
},
],
},
],
}
describe('no-styled-jsx-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)
})
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