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/* eslint-env jest */
import { nextTestSetup } from 'e2e-utils'
import { createSandbox } from 'development-sandbox'
import { outdent } from 'outdent'
const isRspack = process.env.NEXT_RSPACK !== undefined
const initialFiles = new Map([
['app/_.js', ''], // app dir need to exists, otherwise the SWC RSC checks will not run
[
'pages/index.js',
outdent`
import Comp from '../components/Comp'
export default function Page() { return <Comp /> }
`,
],
[
'components/Comp.js',
outdent`
export default function Comp() {
return <p>Hello world</p>
}
`,
],
])
describe('Error Overlay for server components compiler errors in pages', () => {
const { next } = nextTestSetup({
files: {},
skipStart: true,
})
test("importing 'next/headers' in pages", async () => {
await using sandbox = await createSandbox(next, initialFiles)
const { session } = sandbox
await session.patch(
'components/Comp.js',
outdent`
import { cookies } from 'next/headers'
export default function Page() {
return <p>hello world</p>
}
`
)
await session.assertHasRedbox()
await expect(session.getRedboxSource()).resolves.toMatch(
/That only works in a Server Component/
)
if (process.env.IS_TURBOPACK_TEST) {
expect(next.normalizeTestDirContent(await session.getRedboxSource()))
.toMatchInlineSnapshot(`
"./components/Comp.js (1:1)
Ecmascript file had an error
> 1 | import { cookies } from 'next/headers'
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2 |
3 | export default function Page() {
4 | return <p>hello world</p>
You're importing a component that needs "next/headers". That only works in a Server Component which is not supported in the pages/ directory. Read more: https://nextjs.org/docs/app/building-your-application/rendering/server-components
Import traces:
Browser:
./components/Comp.js
./pages/index.js
SSR:
./components/Comp.js
./pages/index.js"
`)
} else if (isRspack) {
expect(
takeUpToString(
next.normalizeTestDirContent(await session.getRedboxSource()),
'----'
)
).toMatchInlineSnapshot(`
"./components/Comp.js
× Module build failed:
╰─▶ × Error: x You're importing a component that needs "next/headers". That only works in a Server Component which is not supported in the pages/ directory. Read more: https://nextjs.org/docs/app/building-
│ | your-application/rendering/server-components
│ |
│ |
│ ,-[1:1]
│ 1 | import { cookies } from 'next/headers'
│ : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│ 2 |
│ 3 | export default function Page() {
│ 4 | return <p>hello world</p>
│ \`----"
`)
} else {
expect(next.normalizeTestDirContent(await session.getRedboxSource()))
.toMatchInlineSnapshot(`
"./components/Comp.js
Error: x You're importing a component that needs "next/headers". That only works in a Server Component which is not supported in the pages/ directory. Read more: https://nextjs.org/docs/app/building-your-application/rendering/server-components
|
,-[1:1]
1 | import { cookies } from 'next/headers'
: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2 |
3 | export default function Page() {
4 | return <p>hello world</p>
\`----
Import trace for requested module:
./components/Comp.js
./pages/index.js"
`)
}
})
test("importing 'server-only' in pages", async () => {
await using sandbox = await createSandbox(next, initialFiles)
const { session } = sandbox
await next.patchFile(
'components/Comp.js',
outdent`
import 'server-only'
export default function Page() {
return 'hello world'
}
`
)
await session.assertHasRedbox()
await expect(session.getRedboxSource()).resolves.toMatch(
/That only works in a Server Component/
)
if (process.env.IS_TURBOPACK_TEST) {
expect(next.normalizeTestDirContent(await session.getRedboxSource()))
.toMatchInlineSnapshot(`
"./components/Comp.js (1:1)
Ecmascript file had an error
> 1 | import 'server-only'
| ^^^^^^^^^^^^^^^^^^^^
2 |
3 | export default function Page() {
4 | return 'hello world'
You're importing a component that needs "server-only". That only works in a Server Component which is not supported in the pages/ directory. Read more: https://nextjs.org/docs/app/building-your-application/rendering/server-components
Import traces:
Browser:
./components/Comp.js
./pages/index.js
SSR:
./components/Comp.js
./pages/index.js"
`)
} else if (isRspack) {
expect(
takeUpToString(
next.normalizeTestDirContent(await session.getRedboxSource()),
'----'
)
).toMatchInlineSnapshot(`
"./components/Comp.js
× Module build failed:
╰─▶ × Error: x You're importing a component that needs "server-only". That only works in a Server Component which is not supported in the pages/ directory. Read more: https://nextjs.org/docs/app/building-your-
│ | application/rendering/server-components
│ |
│ |
│ ,-[1:1]
│ 1 | import 'server-only'
│ : ^^^^^^^^^^^^^^^^^^^^
│ 2 |
│ 3 | export default function Page() {
│ 4 | return 'hello world'
│ \`----"
`)
} else {
expect(
takeUpToString(
next.normalizeTestDirContent(await session.getRedboxSource()),
'Import trace for requested module:'
)
).toMatchInlineSnapshot(`
"./components/Comp.js
Error: x You're importing a component that needs "server-only". That only works in a Server Component which is not supported in the pages/ directory. Read more: https://nextjs.org/docs/app/building-your-application/rendering/server-components
|
,-[1:1]
1 | import 'server-only'
: ^^^^^^^^^^^^^^^^^^^^
2 |
3 | export default function Page() {
4 | return 'hello world'
\`----
Import trace for requested module:"
`)
}
})
test("importing after from 'next/server' in pages", async () => {
await using sandbox = await createSandbox(next, initialFiles)
const { session } = sandbox
await next.patchFile(
'components/Comp.js',
outdent`
import { after } from 'next/server'
export default function Page() {
return 'hello world'
}
`
)
await session.assertHasRedbox()
await expect(session.getRedboxSource()).resolves.toMatch(
/That only works in a Server Component/
)
if (process.env.IS_TURBOPACK_TEST) {
expect(next.normalizeTestDirContent(await session.getRedboxSource()))
.toMatchInlineSnapshot(`
"./components/Comp.js (1:10)
Ecmascript file had an error
> 1 | import { after } from 'next/server'
| ^^^^^
2 |
3 | export default function Page() {
4 | return 'hello world'
You're importing a component that needs "after". That only works in a Server Component which is not supported in the pages/ directory. Read more: https://nextjs.org/docs/app/building-your-application/rendering/server-components
Import traces:
Browser:
./components/Comp.js
./pages/index.js
SSR:
./components/Comp.js
./pages/index.js"
`)
} else if (isRspack) {
expect(
takeUpToString(
next.normalizeTestDirContent(await session.getRedboxSource()),
'----'
)
).toMatchInlineSnapshot(`
"./components/Comp.js
× Module build failed:
╰─▶ × Error: x You're importing a component that needs "after". That only works in a Server Component which is not supported in the pages/ directory. Read more: https://nextjs.org/docs/app/building-your-
│ | application/rendering/server-components
│ |
│ |
│ ,-[1:1]
│ 1 | import { after } from 'next/server'
│ : ^^^^^
│ 2 |
│ 3 | export default function Page() {
│ 4 | return 'hello world'
│ \`----"
`)
} else {
expect(
takeUpToString(
next.normalizeTestDirContent(await session.getRedboxSource()),
'Import trace for requested module:'
)
).toMatchInlineSnapshot(`
"./components/Comp.js
Error: x You're importing a component that needs "after". That only works in a Server Component which is not supported in the pages/ directory. Read more: https://nextjs.org/docs/app/building-your-application/rendering/server-components
|
,-[1:1]
1 | import { after } from 'next/server'
: ^^^^^
2 |
3 | export default function Page() {
4 | return 'hello world'
\`----
Import trace for requested module:"
`)
}
})
describe("importing 'next/cache' APIs in pages", () => {
test.each([
'revalidatePath',
'revalidateTag',
'unstable_cacheLife',
'unstable_cacheTag',
'unstable_expirePath',
'unstable_expireTag',
])('%s is not allowed', async (api) => {
await using sandbox = await createSandbox(next, initialFiles)
const { session } = sandbox
await next.patchFile(
'components/Comp.js',
outdent`
import { ${api} } from 'next/cache'
export default function Page() {
return 'hello world'
}
`
)
await session.assertHasRedbox()
await expect(session.getRedboxSource()).resolves.toMatch(
`You're importing a component that needs "${api}". That only works in a Server Component which is not supported in the pages/ directory.`
)
})
test.each([
'unstable_cache', // useless in client, but doesn't technically error
'unstable_noStore', // no-op in client, but allowed for legacy reasons
])('%s is allowed', async (api) => {
await using sandbox = await createSandbox(next, initialFiles)
const { session } = sandbox
await next.patchFile(
'components/Comp.js',
outdent`
import { ${api} } from 'next/cache'
export default function Page() {
return 'hello world'
}
`
)
await session.assertNoRedbox()
})
})
})
const takeUpToString = (text: string, str: string): string =>
text.includes(str) ? text.slice(0, text.indexOf(str) + str.length) : text
|