Allow server-only in server targets and client-only in client components targets to be available #55394
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ijjk
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area: tests
created-by: Next.js team
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| optimize_barrel_exports: None, | ||
| optimize_server_react: None, | ||
| disable_checks: false, | ||
| bundle_target: String::from("default").into(), |
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This should be an enum, shouldn't it?
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yes, enum will be better, add a reminder for myself to refactor it later. thanks for suggestion 👍
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@huozhi @timneutkens Just a big thank you from myself... This unblocks us for Next and so we can proceed. In general, how long does it take for canary to be cut into a new version. However, thank you very much everyone. This has been tested and it works. |
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@barryengineerapart glad to hear it's confirmed working! thanks |
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We need to disable the default treat `middleware` and `pages/api` as server-only, unless users explictly import "server-only" to poison it. This will avoid the case that when a library is mixing "client-only" API and shared components API in one bundle, and the shared API is used in middleware or `pages/api` that might cause error. See the test case added. Follow up for #55394
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Users want to use
server-onlyto restrict the middleware / app routes / pages api, but now it's failing as we're treating them as different webpack layers, but validating theserver-onlyonly with server components layers.Here we modify the rules a bit to let everyone can use "server-only" for the bundles that targeting server-side.
For next-swc transformer, we introduce the new option
bundleTypewhich only has"server" | "client" | "default"3 values:serverfor server-side targets, like server components, app routes, pages api, middlewareclientfor client components targets such as client components app pages, or page routes under pages directory.defaultfor environment like jest, we don't validate module graph with swc, replaced thedisable_checksintroduced #54891.Refactor a bit webpack-config to adapt to the new rules, after that
server-onlywill be able to used in the server-side targets conventions like middleware andpages/apiFixes #43700
Fixes #54549
Fixes #52833
Closes NEXT-1616
Closes NEXT-1607
Closes NEXT-1385