Typescript equivalent to C#'s default<T>?

Question

In Typescript, is there an equivalent to default?

If not, can its behaviour be implemented somehow?

example:

 let myNumber = default<Number>(); // 0
 let myInstance = default<MyClass>(); // null

Answer 1

No, there is no such thing in TypeScript:

• If the strictNullChecks flag is set, each type (including user-defined) would need its own default instance, which is not practical

• If it is unset, the default value for everything is undefined so there would be no point having a special default operator

If you need this behaviour you will have to define default functions yourself for each type that you need - and even then, you will not be able to use them generically because generic type information is not preserved at runtime