How to define Singleton in TypeScript

Question

What is the best and most convenient way to implement a Singleton pattern for a class in TypeScript? (Both with and without lazy initialisation).

Answer 1

Not a pure singleton (initialization may be not lazy), but similar pattern with help of namespaces.

namespace MyClass
{
    class _MyClass
    {
    ...
    }
    export const instance: _MyClass = new _MyClass();
}

Access to object of Singleton:

MyClass.instance