Nextjs webpack build hot reload error - hot-reloader-client.tsx

[Yard-Daniel]

Verify canary release

• [X] I verified that the issue exists in the latest Next.js canary release

Provide environment information

Tested versions:
next@13.1.0
next@13.1.6
next@13.2.4
next@13.2.5-canary.32

Which area(s) of Next.js are affected? (leave empty if unsure)

No response

Link to the code that reproduces this issue

https://stackblitz.com/edit/vercel-next-js-chqhja?file=app%2Fpage.tsx

To Reproduce

Setup turbo monorepo with a nextjs13 project.

pnpm dev

The error mostly occurs and seldom disappears, because of the hot.module (not sure what triggers).

It fails in the nextjs13 webpack bundle.

Describe the Bug

error - uncaughtException: TypeError: Cannot read properties of undefined (reading 'length')
cfolio:dev:     at WasmHash._updateWithBuffer (/Users/bob/dev/nextjs13/node_modules/.pnpm/next@13.2.4_z72xxk7vwlamvgqemvc4ptm4du/node_modules/next/dist/compiled/webpack/bundle5.js:28:1352524)

file: packages/next/src/client/components/react-dev-overlay/hot-reloader-client.tsx line: 153

// current const hasUpdates = Boolean(updatedModules.leng

th)

// should be const hasUpdates = Boolean(updatedModules && updatedModules.length)

// because error Boolean(null.length) // TypeError: Cannot read properties of null (reading 'length') obviously.

Expected Behavior

To run pnpm dev without issues from the nextjs13 build.

Which browser are you using? (if relevant)

No response

How are you deploying your application? (if relevant)

No response

[shuding]

I think this should have been fixed in the latest codebase, as we check !updatedModules here so it can't be null or undefined in the place you pointed out:

https://github.com/vercel/next.js/blob/eba1626b459504c8ef87a78b7dc8afaa7c6c591b/packages/next/src/client/components/react-dev-overlay/hot-reloader-client.tsx#L134-L151

Let us know if you still see it in the latest canary, thanks.

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