toUndefinableFromNullableReturn undefined if input is null. Otherwise, return T directly. function toUndefinableFromNullable<T>(input: Nullable<T>): Undefinable<T>;§toUndefinableFromNullable<T>(input: Nullable<T>): Undefinable<T>[src]§Type Parameters§T[src]§Parameters§input: Nullable<T>[src]§Return Type§Undefinable<T>[src]