493 lines
12 KiB
TypeScript
493 lines
12 KiB
TypeScript
// @declaration: true
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interface A { a: number; }
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interface B { b: number; }
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interface C { c: number; }
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interface D { d: number; }
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interface AB { a: number; b: number; }
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interface BC { b: number; c: number; }
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declare const a: A;
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declare const b: B;
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declare const c: C;
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declare const d: D;
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declare const ab: AB;
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declare const bc: BC;
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declare const x: any;
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// function without type parameters
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declare function f00(a?: A): A;
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// no inference
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f00();
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f00(a);
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// function with a type parameter without a default
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declare function f01<T>(a?: T): T;
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// inference
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f01();
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f01(a);
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// no inference, fully supplied
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f01<A>();
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f01<A>(a);
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// function with a type paramter with a default
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declare function f02<T = A>(a?: T): T;
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// inference
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f02();
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f02(a);
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f02(b);
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// no inference, fully supplied
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f02<A>();
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f02<A>(a);
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f02<B>();
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f02<B>(b);
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// function with a type parameter with a default that refers to itself
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declare function f03<T = T>(a?: T): T;
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// inference
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f03();
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f03(a);
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f03(b);
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// no inference, fully supplied
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f03<A>();
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f03<A>(a);
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f03<B>();
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f03<B>(b);
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// function with a type paramter without a default and a type parameter with a default
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declare function f04<T, U = B>(a?: T, b?: U): [T, U];
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// inference
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f04();
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f04(a);
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f04(a, b);
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f04(a, c);
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// no inference, partially supplied
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f04<A>();
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f04<A>(a);
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f04<A>(a, b);
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// no inference, fully supplied
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f04<A, B>();
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f04<A, B>(a);
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f04<A, B>(a, b);
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f04<A, C>();
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f04<A, C>(a);
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f04<A, C>(a, c);
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// function with a type parameter without a default and a type parameter with a default that refers to an earlier type parameter
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declare function f05<T, U = T>(a?: T, b?: U): [T, U];
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// inference
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f05();
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f05(a);
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f05(a, a);
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f05(a, b);
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// no inference, partially supplied
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f05<A>();
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f05<A>(a);
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f05<A>(a, a);
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// no inference, fully supplied
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f05<A, B>();
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f05<A, B>(a);
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f05<A, B>(a, b);
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// function with a type parameter with a default that refers to an earlier type parameter with a default
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declare function f06<T = A, U = T>(a?: T, b?: U): [T, U];
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// inference
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f06();
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f06(a);
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f06(a, a);
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f06(a, b);
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f06(b, a);
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f06(b, b);
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// no inference, partially supplied
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f06<A>();
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f06<A>(a);
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f06<A>(a, a);
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f06<B>();
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f06<B>(b);
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f06<B>(b, b);
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// no inference, fully supplied
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f06<A, B>();
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f06<A, B>(a);
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f06<A, B>(a, b);
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f06<B, C>();
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f06<B, C>(b);
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f06<B, C>(b, c);
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// function with a type parameter without a default and a type parameter with a default that refers to an earlier type parameter with a default
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declare function f07<T, U = B, V = U>(a?: T, b?: U, c?: V): [T, U, V];
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// inference
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f07();
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f07(a, b);
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f07(a, c);
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f07(a, b, b);
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f07(a, b, c);
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f07(a, c, b);
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f07(a, c, c);
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// no inference, partially supplied
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f07<A>();
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f07<A>(a);
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f07<A>(a, b);
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f07<A>(a, b, b);
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f07<A, B>();
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f07<A, B>(a);
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f07<A, B>(a, b);
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f07<A, B>(a, b, b);
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f07<A, C>();
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f07<A, C>(a);
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f07<A, C>(a, c);
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f07<A, C>(a, c, c);
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// no inference, fully supplied
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f07<A, B, C>();
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f07<A, B, C>(a);
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f07<A, B, C>(a, b);
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f07<A, B, C>(a, b, c);
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f07<A, C, A>();
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f07<A, C, A>(a);
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f07<A, C, D>(a, c);
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f07<A, C, D>(a, c, d);
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// function with a type parameter with a default that refers to an earlier type parameter with a constraint
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declare function f08<T extends A, U = T>(a?: T, b?: U): [T, U];
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// inference
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f08();
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f08(a);
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f08(a, a);
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f08(a, b);
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// no inference, partially supplied
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f08<A>();
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f08<A>(a);
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f08<A>(a, a);
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// no inference, fully supplied
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f08<A, B>();
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f08<A, B>(a);
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f08<A, B>(a, b);
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// function with a type parameter with a constraint and a default that refers to an earlier type parameter
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declare function f09<T, U extends T = T>(a?: T, b?: U): [T, U];
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// inference
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f09();
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f09(a);
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f09(a, a);
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f09(a, ab);
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// no inference, partially supplied
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f09<A>();
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f09<A>(a);
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f09<A>(a, a);
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f09<A>(a, ab);
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// no inference, fully supplied
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f09<A, AB>();
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f09<A, AB>(a);
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f09<A, AB>(a, ab);
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// function with a type parameter with a constraint and a default that refers to an earlier type parameter with a constraint
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declare function f10<T extends A, U extends T = T>(a?: T, b?: U): [T, U];
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// inference
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f10();
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f10(a);
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f10(a, a);
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f10(a, ab);
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// no inference, partially supplied
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f10<A>();
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f10<A>(a);
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f10<A>(a, a);
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f10<A>(a, ab);
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// no inference, fully supplied
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f10<A, A>();
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f10<A, A>(a);
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f10<A, A>(a, a);
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f10<A, A>(a, ab);
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f10<A, AB>();
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f10<A, AB>(a);
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f10<A, AB>(a, ab);
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// function with a type parameter with a default that refers to an earier type parameter in a union
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declare function f11<T, U = T | B>(a?: T, b?: U): [T, U];
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// inference
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f11();
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f11(a);
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f11(a, a);
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f11(a, b);
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f11(a, c);
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// no inference, partially supplied
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f11<A>();
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f11<A>(a);
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f11<A>(a, a);
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f11<A>(a, b);
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// no inference, fully supplied
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f11<A, C>();
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f11<A, C>(a);
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f11<A, C>(a, c);
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// function with a type parameter with a default that refers to an earlier type parameter in an intersection
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declare function f12<T, U = T & B>(a?: T, b?: U): [T, U];
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// inference
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f12();
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f12(a);
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f12(a, a);
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f12(a, b);
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f12(a, c);
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// no inference, partially supplied
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f12<A>();
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f12<A>(a);
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f12<A>(a, ab);
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// no inference, fully supplied
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f12<A, C>();
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f12<A, C>(a);
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f12<A, C>(a, c);
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// function with a type parameter with a default that refers to a later type parameter with a default
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declare function f13<T = U, U = B>(a?: T, b?: U): [T, U];
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// inference
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f13();
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f13(a);
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f13(a, b);
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f13(a, c);
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// no inference, partially supplied
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f13<A>();
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f13<A>(a);
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f13<A>(a, b);
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// no inference, fully supplied
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f13<A, C>();
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f13<A, C>(a);
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f13<A, C>(a, c);
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f13<A, C>(a, c);
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// function with a type parameter without a default and a type parameter with a default that refers to a later type parameter with a default
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declare function f14<T, U = V, V = C>(a?: T, b?: U, c?: V): [T, U, V];
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// inference
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f14();
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f14(a);
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f14(a, b);
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f14(a, b, c);
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f14(a, b, d);
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// no inference, partially supplied
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f14<A>();
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f14<A>(a);
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f14<A>(a, b);
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f14<A>(a, b, c);
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f14<A, B>();
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f14<A, B>(a);
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f14<A, B>(a, b);
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f14<A, B>(a, b, c);
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// no inference fully supplied
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f14<A, B, D>();
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f14<A, B, D>(a);
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f14<A, B, D>(a, b);
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f14<A, B, D>(a, b, d);
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// function with two type parameters with defaults that mutually refer to each other
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declare function f15<T = U, U = T>(a?: T, b?: U): [T, U];
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// inference
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f15();
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f15(a);
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f15(a, b);
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// no inference, partially supplied
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f15<A>();
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f15<A>(a);
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f15<A>(a, a);
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// no inference, fully supplied
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f15<A, B>();
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f15<A, B>(a);
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f15<A, B>(a, b);
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// function with a type parameter without a default and two type parameters with defaults that mutually refer to each other
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declare function f16<T, U = V, V = U>(a?: T, b?: U, c?: V): [T, U, V];
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// no inference
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f16();
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f16(a);
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f16(a, b);
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f16(a, b, b);
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// no inference, partially supplied
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f16<A>();
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f16<A>(a);
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f16<A>(a, b);
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f16<A>(a, b, b);
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f16<A, B>();
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f16<A, B>(a);
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f16<A, B>(a, b);
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f16<A, B>(a, b, b);
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// no inference, fully supplied
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f16<A, B, D>();
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f16<A, B, D>(a);
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f16<A, B, D>(a, b);
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f16<A, B, D>(a, b, d);
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// function with a type parameter with a default that refers to a later type parameter with a default that refers to an earlier type parameter in a union
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declare function f17<T = U, U = T | B>(a?: T, b?: U): [T, U];
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// inference
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f17();
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f17(a);
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f17(a, a);
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f17(a, b);
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f17(a, c);
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// no inference, partially supplied
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f17<A>();
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f17<A>(a);
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f17<A>(a, a);
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f17<A>(a, b);
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// no inference, fully supplied
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f17<A, C>();
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f17<A, C>(a);
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f17<A, C>(a, c);
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// function with a type parameter without a default and a type parameter with a default that refers to a later type parameter with a default that refers to an earlier type parameter in a union
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declare function f18<T, U = V, V = U | C>(a?: T, b?: U, c?: V): [T, U, V];
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// inference
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f18();
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f18(a);
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f18(a, b);
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f18(a, b, b);
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f18(a, b, c);
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// no inference, partially supplied
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f18<A>();
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f18<A>(a);
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f18<A>(a, b);
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f18<A>(a, b, b);
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f18<A>(a, b, c);
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f18<A, B>();
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f18<A, B>(a);
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f18<A, B>(a, b);
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f18<A, B>(a, b, b);
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f18<A, B>(a, b, c);
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// no inference, fully supplied
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f18<A, B, D>();
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f18<A, B, D>(a);
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f18<A, B, D>(a, b);
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f18<A, B, D>(a, b, d);
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// function with a type parameter with a default that refers to a later type parameter with a default that refers to an earlier type parameter in an intersection
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declare function f19<T = U, U = T & B>(a?: T, b?: U): [T, U];
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// inference
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f19();
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f19(a);
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f19(a, a);
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f19(a, b);
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f19(a, ab);
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f19(a, c);
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// no inference, partially supplied
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f19<A>();
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f19<A>(a);
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f19<A>(a, ab);
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// no inference, fully supplied
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f19<A, C>();
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f19<A, C>(a);
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f19<A, C>(a, c);
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// function with a type parameter without a default and a type parameter with a default that refers to a later type parameter with a default that refers to an earlier type parameter in an intersection
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declare function f20<T, U = V, V = U & C>(a?: T, b?: U, c?: V): [T, U, V];
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// inference
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f20();
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f20(a);
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f20(a, b);
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f20(a, b, c);
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// no inference, partially supplied
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f20<A>();
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f20<A>(a);
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f20<A>(a, b);
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f20<A>(a, b, bc);
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f20<A, B>();
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f20<A, B>(a);
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f20<A, B>(a, b);
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f20<A, B>(a, b, bc);
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// no inference, fully supplied
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f20<A, B, D>();
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f20<A, B, D>(a);
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f20<A, B, D>(a, b);
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f20<A, B, D>(a, b, d);
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interface i00<T = number> { a: T; }
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const i00c00 = (<i00>x).a;
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const i00c01 = (<i00<number>>x).a;
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interface i01<T, U = T> { a: [T, U]; }
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const i01c00 = (<i01<number>>x).a;
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const i01c01 = (<i01<number, string>>x).a;
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interface i02<T extends number, U = T> { a: [T, U]; }
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const i02c00 = (<i02<number>>x).a;
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const i02c01 = (<i02<1>>x).a;
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const i02c02 = (<i02<number, number>>x).a;
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const i02c03 = (<i02<1, number>>x).a;
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const i02c04 = (<i02<number, 1>>x).a;
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interface i03<T extends number, U extends T = T> { a: [T, U]; }
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const i03c00 = (<i03<number>>x).a;
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const i03c01 = (<i03<1>>x).a;
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const i03c02 = (<i03<number, number>>x).a;
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const i03c03 = (<i03<1, 1>>x).a;
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const i03c04 = (<i03<number, 1>>x).a;
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interface i04 {}
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interface i04<T> {}
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interface i04<T = number> {}
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interface i04<T = number, U = string> {}
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interface i05<T = T> { a: T; }
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const i05c00 = (<i05>x).a;
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const i05c01 = (<i05<number>>x).a;
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interface i06<T = U, U = T> { a: [T, U]; }
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const i06c00 = (<i06>x).a;
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const i06c01 = (<i06<number>>x).a;
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const i06c02 = (<i06<number, string>>x).a;
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interface i07 { a: A; }
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interface i07<A = number> { b: A; }
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const i07c00 = (<i07>x).a;
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const i07c01 = (<i07>x).b;
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const i07c02 = (<i07<B>>x).a;
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const i07c03 = (<i07<B>>x).b;
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interface Base01<T> { a: T; }
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interface Base01Constructor { new <T = number>(a?: T): Base01<T>; }
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declare const Base01: Base01Constructor;
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const Base01c00 = new Base01();
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const Base01c01 = new Base01(1);
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const Base01c02 = new Base01<number>();
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const Base01c03 = new Base01<number>(1);
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declare class Derived01<T> extends Base01<T> { }
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const Derived01c00 = new Derived01();
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const Derived01c01 = new Derived01(1);
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const Derived01c02 = new Derived01<number>();
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const Derived01c03 = new Derived01<number>(1);
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declare class Derived02<T = string> extends Base01<T> { }
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const Derived02c00 = new Derived02();
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const Derived02c01 = new Derived02(1);
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const Derived02c02 = new Derived02<number>();
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const Derived02c03 = new Derived02<number>(1);
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// https://github.com/Microsoft/TypeScript/issues/16211
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interface Base02 {}
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interface Base02Constructor { new <T = A>(a: T): Base02 & T; }
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declare const Base02: Base02Constructor;
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declare class Derived03 extends Base02 {}
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const Derived03c00 = new Derived03(ab);
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const Derived03c01 = Derived03c00.a;
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type DerivedProps = keyof Derived03;
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type t00<T = number> = { a: T; }
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const t00c00 = (<t00>x).a;
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const t00c01 = (<t00<number>>x).a;
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type t01<T, U = T> = { a: [T, U]; }
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const t01c00 = (<t01<number>>x).a;
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const t01c01 = (<t01<number, string>>x).a;
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type t02<T extends number, U = T> = { a: [T, U]; }
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const t02c00 = (<t02<number>>x).a;
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const t02c01 = (<t02<1>>x).a;
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const t02c02 = (<t02<number, number>>x).a;
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const t02c03 = (<t02<1, number>>x).a;
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const t02c04 = (<t02<number, 1>>x).a;
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type t03<T extends number, U extends T = T> = { a: [T, U]; }
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const t03c00 = (<t03<number>>x).a;
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const t03c01 = (<t03<1>>x).a;
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const t03c02 = (<t03<number, number>>x).a;
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const t03c03 = (<t03<1, 1>>x).a;
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const t03c04 = (<t03<number, 1>>x).a;
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// https://github.com/Microsoft/TypeScript/issues/16221
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interface SelfReference<T = SelfReference<string>> {} |