import { defineRule } from '../utils/define-rule' import * as path from 'path' const url = 'https://nextjs.org/docs/messages/no-head-import-in-document' export = defineRule({ meta: { docs: { description: 'Prevent usage of `next/head` in `pages/_document.js`.', recommended: true, url, }, type: 'problem', schema: [], }, create(context) { return { ImportDeclaration(node) { if (node.source.value !== 'next/head') { return } const document = context.filename.split('pages', 2)[1] if (!document) { return } const { name, dir } = path.parse(document) if ( name.startsWith('_document') || (dir === '/_document' && name === 'index') ) { context.report({ node, message: `\`next/head\` should not be imported in \`pages${document}\`. Use \`\` from \`next/document\` instead. See: ${url}`, }) } }, } }, })