2014-07-13 01:04:16 +02:00
|
|
|
//// [overloadresolutionWithConstraintCheckingDeferred.ts]
|
|
|
|
interface A { x }
|
|
|
|
interface B { x; y }
|
|
|
|
interface C { z }
|
|
|
|
interface D { q }
|
|
|
|
|
|
|
|
class G<T extends A> {
|
|
|
|
constructor(x: T) { }
|
|
|
|
}
|
|
|
|
|
|
|
|
declare function foo(arg: (x: D) => number): string;
|
|
|
|
declare function foo(arg: (x: C) => any): string;
|
|
|
|
declare function foo(arg: (x: B) => any): number;
|
|
|
|
|
2014-10-22 01:17:37 +02:00
|
|
|
var result: number = foo(x => new G(x)); // x has type D, new G(x) fails, so first overload is picked.
|
2014-07-13 01:04:16 +02:00
|
|
|
|
2014-10-22 01:17:37 +02:00
|
|
|
var result2: number = foo(x => new G<typeof x>(x)); // x has type D, new G(x) fails, so first overload is picked.
|
2014-07-13 01:04:16 +02:00
|
|
|
|
2014-10-22 01:17:37 +02:00
|
|
|
var result3: string = foo(x => { // x has type D
|
|
|
|
var y: G<typeof x>; // error that D does not satisfy constraint, y is of type G<D>, entire call to foo is an error
|
2014-07-13 01:04:16 +02:00
|
|
|
return y;
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
|
|
//// [overloadresolutionWithConstraintCheckingDeferred.js]
|
|
|
|
var G = (function () {
|
|
|
|
function G(x) {
|
|
|
|
}
|
|
|
|
return G;
|
|
|
|
})();
|
2014-10-22 01:17:37 +02:00
|
|
|
var result = foo(function (x) { return new G(x); }); // x has type D, new G(x) fails, so first overload is picked.
|
|
|
|
var result2 = foo(function (x) { return new G(x); }); // x has type D, new G(x) fails, so first overload is picked.
|
2014-07-13 01:04:16 +02:00
|
|
|
var result3 = foo(function (x) {
|
2014-10-22 01:17:37 +02:00
|
|
|
var y; // error that D does not satisfy constraint, y is of type G<D>, entire call to foo is an error
|
2014-07-13 01:04:16 +02:00
|
|
|
return y;
|
|
|
|
});
|