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=== tests/cases/conformance/types/typeRelationships/apparentType/apparentTypeSubtyping.ts ===
// subtype checks use the apparent type of the target type
// S is a subtype of a type T, and T is a supertype of S, if one of the following is true, where S' denotes the apparent type (section 3.8.1) of S:
class Base<U extends String> {
>Base : Symbol(Base, Decl(apparentTypeSubtyping.ts, 0, 0))
>U : Symbol(U, Decl(apparentTypeSubtyping.ts, 3, 11))
>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
x: U;
>x : Symbol(Base.x, Decl(apparentTypeSubtyping.ts, 3, 30))
>U : Symbol(U, Decl(apparentTypeSubtyping.ts, 3, 11))
}
// is String (S) a subtype of U extends String (T)? Would only be true if we used the apparent type of U (T)
class Derived<U> extends Base<string> { // error
>Derived : Symbol(Derived, Decl(apparentTypeSubtyping.ts, 5, 1))
>U : Symbol(U, Decl(apparentTypeSubtyping.ts, 8, 14))
>Base : Symbol(Base, Decl(apparentTypeSubtyping.ts, 0, 0))
x: String;
>x : Symbol(Derived.x, Decl(apparentTypeSubtyping.ts, 8, 39))
>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
}
class Base2 {
>Base2 : Symbol(Base2, Decl(apparentTypeSubtyping.ts, 10, 1))
x: String;
>x : Symbol(Base2.x, Decl(apparentTypeSubtyping.ts, 12, 13))
>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
static s: String;
>s : Symbol(Base2.s, Decl(apparentTypeSubtyping.ts, 13, 14))
>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
}
// is U extends String (S) a subtype of String (T)? Apparent type of U is String so it succeeds
class Derived2<U extends String> extends Base2 { // error because of the prototype's not matching, not because of the instance side
>Derived2 : Symbol(Derived2, Decl(apparentTypeSubtyping.ts, 15, 1))
>U : Symbol(U, Decl(apparentTypeSubtyping.ts, 18, 15))
>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>Base2 : Symbol(Base2, Decl(apparentTypeSubtyping.ts, 10, 1))
x: U;
>x : Symbol(Derived2.x, Decl(apparentTypeSubtyping.ts, 18, 48))
>U : Symbol(U, Decl(apparentTypeSubtyping.ts, 18, 15))
}
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