File: promiseTest.js

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node-typescript 3.3.3333-1
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//// [promiseTest.ts]
interface Promise<T> {
    then<A>(success?: (value: T) => Promise<A>): Promise<A>;
    then<B>(success?: (value: T) => B): Promise<B>;
    data: T;
}

var p: Promise<number> = null;
var p2 = p.then(function (x) {
    return p;
} );

var x = p2.data; // number



//// [promiseTest.js]
var p = null;
var p2 = p.then(function (x) {
    return p;
});
var x = p2.data; // number