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=== tests/cases/conformance/types/typeParameters/typeParameterLists/propertyAccessOnTypeParameterWithConstraints3.ts ===
// generic types should behave as if they have properties of their constraint type
class A {
>A : A
foo(): string { return ''; }
>foo : () => string
>'' : ""
}
class B extends A {
>B : B
>A : A
bar(): string {
>bar : () => string
return '';
>'' : ""
}
}
class C<U extends A, T extends U> {
>C : C<U, T>
f() {
>f : () => string
var x: T;
>x : T
// BUG 823818
var a = x['foo'](); // should be string
>a : string
>x['foo']() : string
>x['foo'] : () => string
>x : T
>'foo' : "foo"
return a + x.foo();
>a + x.foo() : string
>a : string
>x.foo() : string
>x.foo : () => string
>x : T
>foo : () => string
}
g(x: U) {
>g : (x: U) => string
>x : U
// BUG 823818
var a = x['foo'](); // should be string
>a : string
>x['foo']() : string
>x['foo'] : () => string
>x : U
>'foo' : "foo"
return a + x.foo();
>a + x.foo() : string
>a : string
>x.foo() : string
>x.foo : () => string
>x : U
>foo : () => string
}
}
var r1a = (new C<A, B>()).f();
>r1a : string
>(new C<A, B>()).f() : string
>(new C<A, B>()).f : () => string
>(new C<A, B>()) : C<A, B>
>new C<A, B>() : C<A, B>
>C : typeof C
>f : () => string
var r1b = (new C<A, B>()).g(new B());
>r1b : string
>(new C<A, B>()).g(new B()) : string
>(new C<A, B>()).g : (x: A) => string
>(new C<A, B>()) : C<A, B>
>new C<A, B>() : C<A, B>
>C : typeof C
>g : (x: A) => string
>new B() : B
>B : typeof B
interface I<U extends A, T extends U> {
foo: T;
>foo : T
}
var i: I<A, B>;
>i : I<A, B>
var r2 = i.foo.foo();
>r2 : string
>i.foo.foo() : string
>i.foo.foo : () => string
>i.foo : B
>i : I<A, B>
>foo : B
>foo : () => string
var r2b = i.foo['foo']();
>r2b : string
>i.foo['foo']() : string
>i.foo['foo'] : () => string
>i.foo : B
>i : I<A, B>
>foo : B
>'foo' : "foo"
var a: {
>a : { <U extends A, T extends U>(): T; <U extends T, T extends A>(x: U): U; }
<U extends A, T extends U>(): T;
<U extends T, T extends A>(x: U): U;
>x : U
}
var r3 = a().foo(); // error, no inferences for U so it doesn't satisfy constraint
>r3 : string
>a().foo() : string
>a().foo : () => string
>a() : A
>a : { <U extends A, T extends U>(): T; <U extends T, T extends A>(x: U): U; }
>foo : () => string
var r3b = a()['foo']();
>r3b : string
>a()['foo']() : string
>a()['foo'] : () => string
>a() : A
>a : { <U extends A, T extends U>(): T; <U extends T, T extends A>(x: U): U; }
>'foo' : "foo"
// parameter supplied for type argument inference for U
var r3c = a(new B()).foo(); // valid call to an invalid function, U is inferred as B, which has a foo
>r3c : string
>a(new B()).foo() : string
>a(new B()).foo : () => string
>a(new B()) : B
>a : { <U extends A, T extends U>(): T; <U extends T, T extends A>(x: U): U; }
>new B() : B
>B : typeof B
>foo : () => string
var r3d = a(new B())['foo'](); // valid call to an invalid function, U is inferred as B, which has a foo
>r3d : string
>a(new B())['foo']() : string
>a(new B())['foo'] : () => string
>a(new B()) : B
>a : { <U extends A, T extends U>(): T; <U extends T, T extends A>(x: U): U; }
>new B() : B
>B : typeof B
>'foo' : "foo"
var b = {
>b : { foo: <U extends A, T extends U>(x: T) => string; }
>{ foo: <U extends A, T extends U>(x: T) => { // BUG 823818 var a = x['foo'](); // should be string return a + x.foo(); }} : { foo: <U extends A, T extends U>(x: T) => string; }
foo: <U extends A, T extends U>(x: T) => {
>foo : <U extends A, T extends U>(x: T) => string
><U extends A, T extends U>(x: T) => { // BUG 823818 var a = x['foo'](); // should be string return a + x.foo(); } : <U extends A, T extends U>(x: T) => string
>x : T
// BUG 823818
var a = x['foo'](); // should be string
>a : string
>x['foo']() : string
>x['foo'] : () => string
>x : T
>'foo' : "foo"
return a + x.foo();
>a + x.foo() : string
>a : string
>x.foo() : string
>x.foo : () => string
>x : T
>foo : () => string
}
}
var r4 = b.foo(new B()); // valid call to an invalid function
>r4 : string
>b.foo(new B()) : string
>b.foo : <U extends A, T extends U>(x: T) => string
>b : { foo: <U extends A, T extends U>(x: T) => string; }
>foo : <U extends A, T extends U>(x: T) => string
>new B() : B
>B : typeof B
|
