Generic setter for createSignal() is rejected by Typescript transpiler

[pmwmedia]

I want to use a generic setter in my custom hook. However, typescript doesn't like my generic setter setData(). I get the error "TS2345: Argument of type 'T' is not assignable to parameter of type 'Exclude | ((prev: T) => T)'". How can I use a generic setter for createSignal()?

import {Accessor, createSignal} from "solid-js"

type Result<T> = [isLoading: Accessor<boolean>, getData: Accessor<T>, getError: Accessor<Error>]

export function useWebService<T>(service: Promise<T>, defaultValue: T): Result<T> {
    const [isLoading, setLoading] = createSignal(true)
    const [getData, setData] = createSignal<T>(defaultValue)
    const [getError, setError] = createSignal<Error>(null)

    service
        .then(data => setData(data)) // TS2345: Argument of type 'T' is not assignable to parameter of type 'Exclude  | ((prev: T) => T)'
        .catch(error => setError(error))
        .finally(() => setLoading(true))

    return [isLoading, getData, getError]
}

I found an ugly workaround by using setData(data as undefined). However, I'm looking for a cleaner solution.

[pmwmedia]

I just found a clean solution. I have to use Exclude<T, Function>:

import {Accessor, createSignal} from "solid-js"

type Result<T> = [isLoading: Accessor<boolean>, getData: Accessor<T>, getError: Accessor<Error>]

export function useWebService<T>(service: Promise<Exclude<T, Function>>, defaultValue: Exclude<T, Function>): Result<T> {
    const [isLoading, setLoading] = createSignal(true)
    const [getData, setData] = createSignal<T>(defaultValue)
    const [getError, setError] = createSignal<Error>(null)

    service
        .then(data => setData(data))
        .catch(error => setError(error))
        .finally(() => setLoading(true))

    return [isLoading, getData, getError]
}

[Caffeine19]

maybe you can use the callback