In the code snippet below, there is a function named factory that returns a Symbol of type Bob. However, TypeScript appears to forget the type of the return value immediately, leading to an error when trying to assign the return value to variable test one line later.
const bob: unique symbol = Symbol('bob')
type Bob = typeof bob
const factory = (): Bob => bob
const instance = factory()
const test: Bob = instance // Type 'symbol' is not assignable to type 'unique symbol'.
I understand that adding an explicit type signature can resolve this issue:
const instance: typeof bob = factory();
OR
const intance: Bob = factory();
Is there a workaround to address this problem without changing the variable instance to have an explicit type signature?