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Turbopack build: Add marker for when a build used Turbopack #77674

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merged 2 commits into from
Apr 1, 2025
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Turbopack build: Add marker for when a build used Turbopack #77674

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90eb5a7
Turbopack build: Add marker for when a build used Turbopack
timneutkens Apr 1, 2025
90b136e
Update turbopack-build-marker.test.ts
timneutkens Apr 1, 2025
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1 change: 1 addition & 0 deletions packages/next/src/build/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -1452,6 +1452,7 @@ export default async function build(
let shutdownPromise = Promise.resolve()
if (!isGenerateMode) {
if (turboNextBuild) {
await writeFileUtf8(path.join(distDir, 'IS_TURBOPACK_BUILD'), '')
const {
duration: compilerDuration,
shutdownPromise: p,
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8 changes: 8 additions & 0 deletions test/production/app-dir/turbopack-build-marker/app/layout.tsx
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Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
import { ReactNode } from 'react'
export default function Root({ children }: { children: ReactNode }) {
return (
<html>
<body>{children}</body>
</html>
)
}
3 changes: 3 additions & 0 deletions test/production/app-dir/turbopack-build-marker/app/page.tsx
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@@ -0,0 +1,3 @@
export default function Page() {
return <p>hello world</p>
}
6 changes: 6 additions & 0 deletions test/production/app-dir/turbopack-build-marker/next.config.js
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@@ -0,0 +1,6 @@
/**
* @type {import('next').NextConfig}
*/
const nextConfig = {}

module.exports = nextConfig
12 changes: 12 additions & 0 deletions test/production/app-dir/turbopack-build-marker/turbopack-build-marker.test.ts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
import { nextTestSetup } from 'e2e-utils'
describe('turbopack-build-marker', () => {
const { next } = nextTestSetup({
files: __dirname,
})

it('should have Turbopack build marker', async () => {
expect(await next.hasFile('.next/IS_TURBOPACK_BUILD')).toBe(
!!process.env.TURBOPACK
)
})
})
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