💻

• Would you like to work on this feature?

What problem are you trying to solve?

TypeScript 4.7 now allows us to perform typeof queries on private fields.

class Container {
    #data = "hello!";

    get data(): typeof this.#data {
        return this.#data;
    }

    set data(value: typeof this.#data) {
        this.#data = value;
    }
}

• feat(47595): Inability to use typeof on an ES private property microsoft/TypeScript#47696

Describe the solution you'd like

Describe alternatives you've considered

Documentation, Adoption, Migration Strategy

https://devblogs.microsoft.com/typescript/announcing-typescript-4-7-beta/#typeof-on-private-fields