import type { StoreOrVal } from '@tanstack/svelte-query'
import type { Readable } from 'svelte/store'

export function isStore<T>(obj: StoreOrVal<T>): obj is Readable<T> {
  return (
    obj != null &&
    typeof obj === 'object' &&
    'subscribe' in obj &&
    typeof obj.subscribe === 'function'
  )
}