File: genericInterfaceImplementation.ts

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node-typescript 2.1.5-1~bpo8%2B1
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interface IOption<A> {
    get(): A;

    flatten<B>(): IOption<B>;
}

class None<T> implements IOption<T>{
    get(): T {
        throw null;
    }

    flatten<U>() : IOption<U> {
        return new None<U>();
    }
}