Plugin + TypeScript: How to type new state properties based on new option?

[ByScripts]

Hi,

I'm trying to get custom prop typing based on custom option value.

Let's take this simple plugin:

function myPlugin({ options, store }: PiniaPluginContext) {
  if (options.addCustomProp) {
    store.customProp = 'my custom prop;
  }
}

It adds a custom prop to the state only if the addCustomProp is set to true.

For now, I added these declarations:

declare module 'pinia' {
  export interface PiniaCustomProperties {
    customProp: string
  }

  export interface DefineStoreOptionsBase {
    addCustomProp?: boolean
  }
}

It works, BUT the customProp state property is now proposed for ALL stores, even if the addCustomProp option was not passed (or passed as false)

Is there a way to add customProp typing to PiniaCustomStateProperties based on the addCustomProp option value?

Thank you.

[Ilanaya]

@ByScripts Check this discussion. The only way is explicit check against store.$id