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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-sync-scripts']
const message =
'Synchronous scripts should not be used. See: https://nextjs.org/docs/messages/no-sync-scripts'
const tests = {
valid: [
`import {Head} from 'next/document';
export class Blah extends Head {
render() {
return (
<div>
<h1>Hello title</h1>
<script src='https://blah.com' async></script>
</div>
);
}
}`,
`import {Head} from 'next/document';
export class Blah extends Head {
render(props) {
return (
<div>
<h1>Hello title</h1>
<script {...props} ></script>
</div>
);
}
}`,
],
invalid: [
{
code: `
import {Head} from 'next/document';
export class Blah extends Head {
render() {
return (
<div>
<h1>Hello title</h1>
<script src='https://blah.com'></script>
</div>
);
}
}`,
errors: [{ message, type: 'JSXOpeningElement' }],
},
{
code: `
import {Head} from 'next/document';
export class Blah extends Head {
render(props) {
return (
<div>
<h1>Hello title</h1>
<script src={props.src}></script>
</div>
);
}
}`,
errors: [{ message, type: 'JSXOpeningElement' }],
},
],
}
describe('no-sync-scripts', () => {
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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