78 lines
2.5 KiB
JavaScript
78 lines
2.5 KiB
JavaScript
const NodeAttributes = require('../utils/node-attributes.js')
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const SUPPORTED_SRCS = [
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'www.google-analytics.com/analytics.js',
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'www.googletagmanager.com/gtag/js',
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]
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const SUPPORTED_HTML_CONTENT_URLS = [
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'www.google-analytics.com/analytics.js',
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'www.googletagmanager.com/gtm.js',
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]
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const ERROR_MSG =
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'Use the `next/script` component for loading third party scripts. See: https://nextjs.org/docs/messages/next-script-for-ga.'
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// Check if one of the items in the list is a substring of the passed string
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const containsStr = (str, strList) => {
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return strList.some((s) => str.includes(s))
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}
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module.exports = {
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meta: {
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docs: {
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description:
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'Prefer next script component when using the inline script for Google Analytics',
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recommended: true,
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url: 'https://nextjs.org/docs/messages/next-script-for-ga',
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},
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},
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create: function (context) {
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return {
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JSXOpeningElement(node) {
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if (node.name.name !== 'script') {
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return
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}
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if (node.attributes.length === 0) {
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return
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}
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const attributes = new NodeAttributes(node)
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// Check if the Alternative async tag is being used to add GA.
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// https://developers.google.com/analytics/devguides/collection/analyticsjs#alternative_async_tag
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// https://developers.google.com/analytics/devguides/collection/gtagjs
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if (
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typeof attributes.value('src') === 'string' &&
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containsStr(attributes.value('src'), SUPPORTED_SRCS)
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) {
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return context.report({
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node,
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message: ERROR_MSG,
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})
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}
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// Check if inline script is being used to add GA.
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// https://developers.google.com/analytics/devguides/collection/analyticsjs#the_google_analytics_tag
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// https://developers.google.com/tag-manager/quickstart
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if (
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attributes.value('dangerouslySetInnerHTML') &&
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attributes.value('dangerouslySetInnerHTML').length > 0
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) {
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const htmlContent =
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attributes.value('dangerouslySetInnerHTML')[0].value.quasis &&
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attributes.value('dangerouslySetInnerHTML')[0].value.quasis[0].value
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.raw
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if (
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htmlContent &&
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containsStr(htmlContent, SUPPORTED_HTML_CONTENT_URLS)
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) {
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context.report({
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node,
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message: ERROR_MSG,
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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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}
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module.exports.schema = []
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