49 lines
1.3 KiB
JavaScript
49 lines
1.3 KiB
JavaScript
module.exports = {
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meta: {
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docs: {
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description: 'Disallow using <title> with Head from next/document',
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url: 'https://nextjs.org/docs/messages/no-title-in-document-head',
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},
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},
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create: function (context) {
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let headFromNextDocument = false
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return {
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ImportDeclaration(node) {
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if (node.source.value === 'next/document') {
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if (node.specifiers.some(({ local }) => local.name === 'Head')) {
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headFromNextDocument = true
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}
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}
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},
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JSXElement(node) {
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if (!headFromNextDocument) {
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return
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}
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if (
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node.openingElement &&
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node.openingElement.name &&
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node.openingElement.name.name !== 'Head'
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) {
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return
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}
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const titleTag = node.children.find(
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(child) =>
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child.openingElement &&
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child.openingElement.name &&
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child.openingElement.name.type === 'JSXIdentifier' &&
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child.openingElement.name.name === 'title'
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)
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if (titleTag) {
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context.report({
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node: titleTag,
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message:
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'Titles should be defined at the page-level using next/head. See https://nextjs.org/docs/messages/no-title-in-document-head.',
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})
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}
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},
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}
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},
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}
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