[PageContainer] slotProps is not inferring the actual toolbar component's props type

[mkarajohn]

Steps to reproduce

1. Define a component to use as toolbar in PageContainer, e.g. function PageActions({ status }: { status: string }) { ... }
2. Pass the slots and slotProps on PageContainer: ... slots={{ toolbar: PageActions }} slotProps={{ toolbar: { status: 'something' } }} ...

Current behavior

Typescript throws the following error over slotProps

TS2353: Object literal may only specify known properties, and status does not exist in type PageContainerToolbarProps

Expected behavior

The props type of PageActions component should be inferred and not throw when I pass the expected props to slotProps

Context

No response

Your environment

npx @mui/envinfo

   System:
    OS: Linux 6.8 Ubuntu 24.04.1 LTS 24.04.1 LTS (Noble Numbat)
  Binaries:
    Node: 22.9.0 - ~/.nvm/versions/node/v22.9.0/bin/node
    npm: 10.8.3 - ~/.nvm/versions/node/v22.9.0/bin/npm
    pnpm: Not Found
  Browsers:
    Chrome: 131.0.6778.85
  npmPackages:
    @emotion/react: ^11.13.5 => 11.13.5 
    @emotion/styled: ^11.13.5 => 11.13.5 
    @mui/base:  5.0.0-beta.62 
    @mui/core-downloads-tracker:  6.1.9 
    @mui/icons-material: ^6.1.9 => 6.1.9 
    @mui/lab:  6.0.0-beta.16 
    @mui/material: ^6.1.9 => 6.1.9 
    @mui/material-nextjs: ^6.1.9 => 6.1.9 
    @mui/private-theming:  6.1.9 
    @mui/styled-engine:  6.1.9 
    @mui/system:  6.1.9 
    @mui/types:  7.2.19 
    @mui/utils:  6.1.9 
    @toolpad/core: ^0.10.0 => 0.10.0 
    @toolpad/utils:  0.10.0 
    @types/react: ^18 => 18.3.12 
    react: ^18 => 18.3.1 
    react-dom: ^18 => 18.3.1 
    typescript: ^5 => 5.6.3 

Search keywords: PageContainer, slotprops, infer, toolbar

[bharatkashyap]

Instead of passing the intended props to the custom component via slotProps, you can pass it to the custom component itself and wrap the custom component definition in a useCallback, which you can pass to the slot instead of the component function.

Something like: https://codesandbox.io/p/sandbox/cocky-morning-lccr4w

[mkarajohn]

Thanks; yeah, that will do for now, but i would consider this approach a workaround, I think the expected behaviour would be for the props to be inferred properly.