[TS2742] The inferred type of '...' cannot be named without a reference to ...

[ryuujo1573]

Related to microsoft/TypeScript#58743

It is not working if I try to export reducers/slices from a package.

Is this an actual TS issue?

Here's a possible reproduction

src/logic/client/user.ts:11:7 - error TS2742: The inferred type of 'userSlice' cannot be named without a reference to '../../../node_modules/@reduxjs/toolkit/dist/createSlice'. This is likely not portable. A type annotation is necessary.

[telephant]

same here

[telephant]

emm, don't export nikkiSlice, only export nikkiReducer

[aryaemami59]

Related to #3962.

[aryaemami59]

It seems like in your case we have to export the CaseReducerDefinition interface from the main index.d.ts file.

Side note: It seems like if a type is exported from an internal .d.ts file, but not exported from index.d.ts, then the error becomes: The inferred type of 'nikkiSlice' cannot be named without a reference to '../../node_modules/@reduxjs/toolkit/dist/createSlice'. This is likely not portable. A type annotation is necessary.

But if that same type is not exported at all the error message becomes much clearer like this: Exported variable 'nikkiSlice' has or is using name 'CaseReducerDefinition' from external module "RTK-issue-3962/node_modules/.pnpm/@reduxjs+toolkit@2.2.5/node_modules/@reduxjs/toolkit/dist/createSlice" but cannot be named.
which actually tells us which type is the problematic one.

[EskiMojo14]

@aryaemami59 that makes sense, thanks. i think we wouldn't be against exporting CaseReducerDefinition - in fact my open PR https://github.com/reduxjs/redux-toolkit/pull/3894/files#diff-5278ccae8e99ae0373490ef372d1953e0f3da303d948485ef7e00bd7de7fffa3 exports more that we can export just in case.

[aryaemami59]

@EskiMojo14 Wonderful, I have a list of types that need to be exported, thankfully they're not that many (as of now, might add more to the list if I discover more problems), will hopefully put up a PR soon for a partial fix.

[aryaemami59]

Can you run this command and try again to see if it fixes the issue:

pnpm add https://pkg.csb.dev/reduxjs/redux-toolkit/commit/06a30ee4/@reduxjs/toolkit

[atsiapas-mellon]

Can you run this command and try again to see if it fixes the issue:

pnpm add https://pkg.csb.dev/reduxjs/redux-toolkit/commit/06a30ee4/@reduxjs/toolkit

It did fix the issue for me. Thank you.

[glasody]

for me adding "baseUrl": ".", to tsconfig fixed it

[markerikson]

Fixed in https://github.com/reduxjs/redux-toolkit/releases/tag/v2.2.7 !