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Pages router: Enable strict next/head children reconciler by default #65418

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merged 1 commit into from
May 11, 2024
Merged

Pages router: Enable strict next/head children reconciler by default #65418

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2 changes: 1 addition & 1 deletion packages/next/src/build/webpack/plugins/define-env-plugin.ts
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Expand Up @@ -220,7 +220,7 @@ export function getDefineEnv({
...getImageConfig(config, dev),
'process.env.__NEXT_ROUTER_BASEPATH': config.basePath,
'process.env.__NEXT_STRICT_NEXT_HEAD':
config.experimental.strictNextHead ?? false,
config.experimental.strictNextHead ?? true,
'process.env.__NEXT_HAS_REWRITES': hasRewrites,
'process.env.__NEXT_CONFIG_OUTPUT': config.output,
'process.env.__NEXT_I18N_SUPPORT': !!config.i18n,
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2 changes: 1 addition & 1 deletion packages/next/src/export/index.ts
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Expand Up @@ -419,7 +419,7 @@ export async function exportAppImpl(
serverActionsManifest,
}
: {}),
strictNextHead: !!nextConfig.experimental.strictNextHead,
strictNextHead: nextConfig.experimental.strictNextHead ?? true,
deploymentId: nextConfig.deploymentId,
experimental: {
ppr: nextConfig.experimental.ppr === true,
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2 changes: 1 addition & 1 deletion packages/next/src/server/base-server.ts
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Expand Up @@ -511,7 +511,7 @@ export default abstract class Server<
supportsDynamicHTML: true,
trailingSlash: this.nextConfig.trailingSlash,
deploymentId: this.nextConfig.deploymentId,
strictNextHead: !!this.nextConfig.experimental.strictNextHead,
strictNextHead: this.nextConfig.experimental.strictNextHead ?? true,
poweredByHeader: this.nextConfig.poweredByHeader,
canonicalBase: this.nextConfig.amp.canonicalBase || '',
buildId: this.buildId,
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1 change: 1 addition & 0 deletions packages/next/src/server/config-shared.ts
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Expand Up @@ -188,6 +188,7 @@ export interface ExperimentalConfig {
caseSensitiveRoutes?: boolean
appDocumentPreloading?: boolean
preloadEntriesOnStart?: boolean
/** @default true */
strictNextHead?: boolean
Comment on lines +191 to 192
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@ijjk ijjk May 8, 2024 •
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Since this was experimental I think we can remove it, unless there's still a valid case for disabling?

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@timneutkens mentioned that some people may complain for SEO reasons even though extra attributes do not affect it. At least that's what happened in the past he said.

If this comes up, and people don't provide evidence that strictNextHead: true is bad, we can offer strictNextHead: false as an escape hatch. Client-side updates to next/head children would be broken but at least it would fix their imagined SEO issues.

But practically, I want to remove this soon after Next.js 15 is out stable. vercel/front is running with strictNextHead for a while by that time so it should've had sufficient soak-time.

clientRouterFilter?: boolean
clientRouterFilterRedirects?: boolean
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5 changes: 0 additions & 5 deletions test/e2e/next-head/index.test.ts
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Expand Up @@ -14,11 +14,6 @@ describe('next/head', () => {
pages: new FileRef(join(__dirname, 'app/pages')),
components: new FileRef(join(__dirname, 'app/components')),
},
nextConfig: {
experimental: {
strictNextHead: true,
},
},
})
})
afterAll(() => next.destroy())
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