next-redux-wrapper v7/v8 type errors with getInitialAppProps

[smo043]

Describe the bug

We upgraded next.js from v10 - v12.3.1 and we saw the typecasting was breaking we solved it with module augmentation for next-redux-wrapper v6.

declare module 'next/dist/shared/lib/utils' {
  export interface NextPageContext<S = TemplateState, A extends Action = AnyAction> {
    /**
     * Provided by next-redux-wrapper: The redux store
     */
    store: Store<S, A>;
  }
}

store:

export const wrapper = createWrapper<Store<TemplateState>>(makeStore);

However, as we updated the next-redux-wrapper to v7(latest)/v8(latest), we started seeing typecasting errors, when we use getInitialAppProps.

Steps to reproduce the behavior:

1. Use next js 12.3.1
2. use next-redux-wrapper v7 latest or v8 latest
3. redux: 4.1.1, react-redux: 7.2.5, redux-saga: 1.1.3
4. add getInitialAppProps
5. See the type error

Expected behavior

type errors should be resolved. Any help would be appreciated. Thanks.

[smo043]

Any help pls

[GGAlanSmithee]

I got this to work by inferring the type

type GetInitialProps = ReturnType<typeof wrapper.getInitialAppProps>

...

public static getInitialProps: GetInitialProps = wrapper.getInitialAppProps(

Not sure if this is correct though.

Also, my test itself is not working because of #494 so not sure if this "fix" does anything

[smo043]

@GGAlanSmithee - Thank you, I will give a try

[smo043]

@GGAlanSmithee - It didn't help. It would be helpful if the core team address this issue and release a version.