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import { defineRule } from '../utils/define-rule'
import * as path from 'path'
const url =
'https://nextjs.org/docs/messages/no-before-interactive-script-outside-document'
const convertToCorrectSeparator = (str: string) =>
str.replace(/[\\/]/g, path.sep)
export = defineRule({
meta: {
docs: {
description:
"Prevent usage of `next/script`'s `beforeInteractive` strategy outside of `pages/_document.js`.",
recommended: true,
url,
},
type: 'problem',
schema: [],
},
create(context) {
let scriptImportName = null
return {
'ImportDeclaration[source.value="next/script"] > ImportDefaultSpecifier'(
node: any
) {
scriptImportName = node.local.name
},
JSXOpeningElement(node) {
const pathname = convertToCorrectSeparator(context.filename)
const isInAppDir = pathname.includes(`${path.sep}app${path.sep}`)
// This rule shouldn't fire in `app/`
if (isInAppDir) {
return
}
if (!scriptImportName) {
return
}
if (node.name && node.name.name !== scriptImportName) {
return
}
const strategy = node.attributes.find(
(child) => child.name && child.name.name === 'strategy'
)
if (
!strategy ||
!strategy.value ||
strategy.value.value !== 'beforeInteractive'
) {
return
}
const document = context.filename.split('pages', 2)[1]
if (document && path.parse(document).name.startsWith('_document')) {
return
}
context.report({
node,
message: `\`next/script\`'s \`beforeInteractive\` strategy should not be used outside of \`pages/_document.js\`. See: ${url}`,
})
},
}
},
})
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