77 lines
3.9 KiB
Plaintext
77 lines
3.9 KiB
Plaintext
tests/cases/conformance/types/typeParameters/typeParameterLists/propertyAccessOnTypeParameterWithConstraints3.ts(13,22): error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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tests/cases/conformance/types/typeParameters/typeParameterLists/propertyAccessOnTypeParameterWithConstraints3.ts(31,26): error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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tests/cases/conformance/types/typeParameters/typeParameterLists/propertyAccessOnTypeParameterWithConstraints3.ts(39,19): error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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tests/cases/conformance/types/typeParameters/typeParameterLists/propertyAccessOnTypeParameterWithConstraints3.ts(40,6): error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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tests/cases/conformance/types/typeParameters/typeParameterLists/propertyAccessOnTypeParameterWithConstraints3.ts(42,14): error TS2339: Property 'foo' does not exist on type '{}'.
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tests/cases/conformance/types/typeParameters/typeParameterLists/propertyAccessOnTypeParameterWithConstraints3.ts(49,24): error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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==== tests/cases/conformance/types/typeParameters/typeParameterLists/propertyAccessOnTypeParameterWithConstraints3.ts (6 errors) ====
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// generic types should behave as if they have properties of their constraint type
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class A {
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foo(): string { return ''; }
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}
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class B extends A {
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bar(): string {
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return '';
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}
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}
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class C<U extends A, T extends U> {
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~~~~~~~~~~~
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!!! error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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f() {
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var x: T;
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// BUG 823818
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var a = x['foo'](); // should be string
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return a + x.foo();
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}
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g(x: U) {
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// BUG 823818
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var a = x['foo'](); // should be string
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return a + x.foo();
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}
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}
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var r1a = (new C<A, B>()).f();
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var r1b = (new C<A, B>()).g(new B());
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interface I<U extends A, T extends U> {
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~~~~~~~~~~~
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!!! error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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foo: T;
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}
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var i: I<A, B>;
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var r2 = i.foo.foo();
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var r2b = i.foo['foo']();
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var a: {
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<U extends A, T extends U>(): T;
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~~~~~~~~~~~
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!!! error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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<U extends T, T extends A>(x: U): U;
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~~~~~~~~~~~
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!!! error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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}
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var r3 = a().foo(); // error, no inferences for U so it doesn't satisfy constraint
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~~~
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!!! error TS2339: Property 'foo' does not exist on type '{}'.
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var r3b = a()['foo']();
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// parameter supplied for type argument inference for U
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var r3c = a(new B()).foo(); // valid call to an invalid function, U is inferred as B, which has a foo
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var r3d = a(new B())['foo'](); // valid call to an invalid function, U is inferred as B, which has a foo
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var b = {
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foo: <U extends A, T extends U>(x: T) => {
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~~~~~~~~~~~
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!!! error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.
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// BUG 823818
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var a = x['foo'](); // should be string
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return a + x.foo();
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}
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}
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var r4 = b.foo(new B()); // valid call to an invalid function |