43 lines
1.6 KiB
TypeScript
43 lines
1.6 KiB
TypeScript
//// [typeParameterAsTypeParameterConstraintTransitively2.ts]
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// using a type parameter as a constraint for a type parameter is invalid
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// these should be errors at the type parameter constraint declarations, and have no downstream errors
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interface A { foo: number }
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interface B extends A { bar: string; }
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interface C extends B { baz: boolean; }
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var a: A;
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var b: B;
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var c: C;
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function foo<T, U, V>(x: T, y: U, z: V): V { return z; }
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//function foo<T, U extends T, V extends U>(x: T, y: U, z: V): V { return z; }
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foo(1, 2, '');
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foo({ x: 1 }, { x: 1, y: '' }, { x: 2, y: 2, z: true });
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foo(a, b, a);
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foo(a, { foo: 1, bar: '', hm: true }, b);
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foo((x: number, y: string) => { }, (x, y: boolean) => { }, () => { });
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function foo2<T extends A, U extends A, V extends A>(x: T, y: U, z: V): V { return z; }
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//function foo2<T extends A, U extends T, V extends U>(x: T, y: U, z: V): V { return z; }
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foo(b, a, c);
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foo(c, c, a);
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//// [typeParameterAsTypeParameterConstraintTransitively2.js]
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// using a type parameter as a constraint for a type parameter is invalid
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// these should be errors at the type parameter constraint declarations, and have no downstream errors
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var a;
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var b;
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var c;
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function foo(x, y, z) { return z; }
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//function foo<T, U extends T, V extends U>(x: T, y: U, z: V): V { return z; }
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foo(1, 2, '');
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foo({ x: 1 }, { x: 1, y: '' }, { x: 2, y: 2, z: true });
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foo(a, b, a);
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foo(a, { foo: 1, bar: '', hm: true }, b);
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foo(function (x, y) { }, function (x, y) { }, function () { });
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function foo2(x, y, z) { return z; }
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//function foo2<T extends A, U extends T, V extends U>(x: T, y: U, z: V): V { return z; }
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foo(b, a, c);
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foo(c, c, a);
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