Disable experimental.optimizeServer by default to fix failed server action #69788

huozhi · 2024-09-06T13:52:23Z

What

This PR fixes the server actions used under react hooks like useEffect are accidentally removed from server action manifest which resulted into a failed server action call.

Why

The server actions collection need to collect the used actions even in the 1st round of traversing. During fixing this I found it's broken due to the the react hooks are dropped in SSR bundle. That option is enabled since 14.2.0 by default and it will optimize the server side uesless hook call, however the action call under it will also be dropped along with the whole hook. Since we're collecting the used actions from server compiler in webpack, it's not possible to collect those actions if they're already dropped. So we disabled that flag in this PR by default unelss users enable by default.

Follow up improvement in the future: We either figure out a way that can refine the detection which react hook is better not optimized, or explore the client side used server action detection and reflect it to server actions manifest so that we don't have to rely on disabling experimental.optimizeServer.

Fixes #69756

huozhi · 2024-09-06T13:52:41Z

Disable experimental.optimizeServer by default to fix failed server action #69788 👈
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ijjk · 2024-09-06T14:00:17Z

Stats from current PR

Default Build (Increase detected ⚠️)

General

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Edge SSR bundle Size Overall increase ⚠️

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Next Runtimes

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build cache

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Overall change	0 B	0 B	✓

Diff details

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Diff for image-HASH.js

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Diff for 5867-HASH.js

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Commit: 76ac192

ijjk · 2024-09-06T14:00:48Z

Tests Passed

test/production/app-dir/actions-tree-shaking/use-effect-actions/use-effect-actions-edge.test.ts

controversial · 2024-09-06T15:37:27Z

Thanks for the quick fix on this! The underlying cause (useEffects removed from the server bundle, causing the action calls to be tree-shaken) makes total sense.

We either figure out a way that can refine the detection which react hook is better not optimized, or explore the client side used server action detection and reflect it to server actions manifest

I think the latter approach will be the “correct” one - since server actions are intended to be called from the client, the client bundle should ideally be the one used for detecting which server actions are used/unused.

huozhi · 2024-09-06T15:42:14Z

Thanks for the quick fix on this! The underlying cause (useEffects removed from the server bundle, causing the action calls to be tree-shaken) makes total sense.

We either figure out a way that can refine the detection which react hook is better not optimized, or explore the client side used server action detection and reflect it to server actions manifest

I think the latter approach will be the “correct” one - since server actions are intended to be called from the client, the client bundle should ideally be the one used for detecting which server actions are used/unused.

Yea this will be temporary. Since it would take more time on researching the ideal solution as we also want to enable it by default for now. We want to do hotfix for 14.2 quickly so this perf improvement won't crash the app. And once the ideal solution is there, we can re-enable again.

This reverts commit bf48448.

huozhi · 2024-09-14T22:24:14Z

Got a follow up solution in #70101 to re-enable the optimizeServer config with a more safe transform

ijjk added created-by: Next.js team PRs by the Next.js team. tests type: next labels Sep 6, 2024

huozhi changed the title ~~handle use effect~~ wip: handle use effect Sep 6, 2024

lubieowoce reviewed Sep 6, 2024

View reviewed changes

test/production/app-dir/actions-tree-shaking/use-effect-actions/use-effect-actions-edge.test.ts Outdated Show resolved Hide resolved

huozhi changed the title ~~wip: handle use effect~~ Fix failed server action under react hooks Sep 6, 2024

disable optimize

76ac192

huozhi force-pushed the 09-05-fix_missing_server_action branch from 8418fef to 76ac192 Compare September 6, 2024 15:28

huozhi changed the title ~~Fix failed server action under react hooks~~ Disable experimental.optimizeServer by default Sep 6, 2024

huozhi requested review from ztanner, shuding and ijjk September 6, 2024 15:30

ijjk approved these changes Sep 6, 2024

View reviewed changes

huozhi marked this pull request as ready for review September 6, 2024 15:53

huozhi merged commit 87e91d5 into canary Sep 6, 2024
105 of 110 checks passed

huozhi deleted the 09-05-fix_missing_server_action branch September 6, 2024 17:08

huozhi added a commit that referenced this pull request Sep 6, 2024

Disable experimental.optimizeServer by default (#69788)

bf48448

huozhi changed the title ~~Disable experimental.optimizeServer by default~~ Disable experimental.optimizeServer by default to fix failed server action Sep 9, 2024

huozhi added a commit that referenced this pull request Sep 10, 2024

Revert "Disable experimental.optimizeServer by default (#69788)"

ac5d6c7

This reverts commit bf48448.

This was referenced Sep 10, 2024

Revert server action optimization #69925

Merged

Improve the transform and re-enable optimizeServerReact #70101

Merged

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Disable experimental.optimizeServer by default to fix failed server action #69788

Disable experimental.optimizeServer by default to fix failed server action #69788

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Disable experimental.optimizeServer by default to fix failed server action #69788

Disable experimental.optimizeServer by default to fix failed server action #69788

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