How do I annotate a generic function inside an object?

[Utkarsh Verma]

I have the following typedef:

/**
 * @template T
 * @typedef {Object} QuickAddApi
 * @property {(header: string, placeholder?: string, value?: string) => Promise<string>} inputPrompt
 * @property {function(string[], T[]): T} suggester
 */

My intent here is to let the LSP server know that the param and return types are bound for suggestor. However, using the type QuickAddApi forces me to specify a type using QuickAddApi<string>. Can I somehow specify the generic only for the function and not the entire object?

[Rafał Chłodnicki]

You can't instantiate an instance of QuickAddApi without knowing the type of suggester so I would say that passing the generic argument to QuickAddApi is the way to go.

But this is not a question specific to this server but rather to Typescript itself so I would suggest asking such questions on Stack Overflow, for example.