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import { defineRule } from '../utils/define-rule'
import NodeAttributes from '../utils/node-attributes'
const url = 'https://nextjs.org/docs/messages/google-font-preconnect'
export = defineRule({
meta: {
docs: {
description: 'Ensure `preconnect` is used with Google Fonts.',
recommended: true,
url,
},
type: 'problem',
schema: [],
},
create(context) {
return {
JSXOpeningElement(node) {
if (node.name.name !== 'link') {
return
}
const attributes = new NodeAttributes(node)
if (!attributes.has('href') || !attributes.hasValue('href')) {
return
}
const hrefValue = attributes.value('href')
const preconnectMissing =
!attributes.has('rel') ||
!attributes.hasValue('rel') ||
attributes.value('rel') !== 'preconnect'
if (
typeof hrefValue === 'string' &&
hrefValue.startsWith('https://fonts.gstatic.com') &&
preconnectMissing
) {
context.report({
node,
message: `\`rel="preconnect"\` is missing from Google Font. See: ${url}`,
})
}
},
}
},
})
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