TypeScript singleton (swift style)

singleton.ts

export default class SomeSingleton {
    private static privateShared: Api;

    public static get shared(): Api {
        if (!SomeSingleton.privateShared) {
            SomeSingleton.privateShared = new SomeSingleton();
        }

        return SomeSingleton.privateShared;
    }

    public foo() {}
}

// Using
import SomeSingleton from './some-singleton';
SomeSingleton.shared.foo()