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=== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/callSignatureAssignabilityInInheritance4.ts ===
// checking subtype relations for function types as it relates to contextual signature instantiation
class Base { foo: string; }
>Base : Base
>foo : string
class Derived extends Base { bar: string; }
>Derived : Derived
>Base : Base
>bar : string
class Derived2 extends Derived { baz: string; }
>Derived2 : Derived2
>Derived : Derived
>baz : string
class OtherDerived extends Base { bing: string; }
>OtherDerived : OtherDerived
>Base : Base
>bing : string
interface A { // T
// M's
a: <T>(x: T) => T[];
>a : <T>(x: T) => T[]
>x : T
a2: <T>(x: T) => string[];
>a2 : <T>(x: T) => string[]
>x : T
a3: <T>(x: T) => void;
>a3 : <T>(x: T) => void
>x : T
a4: <T,U>(x: T, y: U) => string;
>a4 : <T, U>(x: T, y: U) => string
>x : T
>y : U
a5: <T,U>(x: (arg: T) => U) => T;
>a5 : <T, U>(x: (arg: T) => U) => T
>x : (arg: T) => U
>arg : T
a6: <T extends Base>(x: (arg: T) => Derived) => T;
>a6 : <T extends Base>(x: (arg: T) => Derived) => T
>x : (arg: T) => Derived
>arg : T
a11: <T>(x: { foo: T }, y: { foo: T; bar: T }) => Base;
>a11 : <T>(x: { foo: T; }, y: { foo: T; bar: T; }) => Base
>x : { foo: T; }
>foo : T
>y : { foo: T; bar: T; }
>foo : T
>bar : T
a15: <T>(x: { a: T; b: T }) => T[];
>a15 : <T>(x: { a: T; b: T; }) => T[]
>x : { a: T; b: T; }
>a : T
>b : T
a16: <T extends Base>(x: { a: T; b: T }) => T[];
>a16 : <T extends Base>(x: { a: T; b: T; }) => T[]
>x : { a: T; b: T; }
>a : T
>b : T
a17: {
>a17 : { <T extends Derived>(x: (a: T) => T): T[]; <T extends Base>(x: (a: T) => T): T[]; }
<T extends Derived>(x: (a: T) => T): T[];
>x : (a: T) => T
>a : T
<T extends Base>(x: (a: T) => T): T[];
>x : (a: T) => T
>a : T
};
a18: {
>a18 : { (x: { <T extends Derived>(a: T): T; <T extends Base>(a: T): T; }): any[]; (x: { <T extends Derived2>(a: T): T; <T extends Base>(a: T): T; }): any[]; }
(x: {
>x : { <T extends Derived>(a: T): T; <T extends Base>(a: T): T; }
<T extends Derived>(a: T): T;
>a : T
<T extends Base>(a: T): T;
>a : T
}): any[];
(x: {
>x : { <T extends Derived2>(a: T): T; <T extends Base>(a: T): T; }
<T extends Derived2>(a: T): T;
>a : T
<T extends Base>(a: T): T;
>a : T
}): any[];
};
}
// S's
interface I extends A {
// N's
a: <T>(x: T) => T[]; // ok, instantiation of N is a subtype of M, T is number
>a : <T>(x: T) => T[]
>x : T
a2: <T>(x: T) => string[]; // ok
>a2 : <T>(x: T) => string[]
>x : T
a3: <T>(x: T) => T; // ok since Base returns void
>a3 : <T>(x: T) => T
>x : T
a4: <T, U>(x: T, y: U) => string; // ok, instantiation of N is a subtype of M, T is string, U is number
>a4 : <T, U>(x: T, y: U) => string
>x : T
>y : U
a5: <T, U>(x: (arg: T) => U) => T; // ok, U is in a parameter position so inferences can be made
>a5 : <T, U>(x: (arg: T) => U) => T
>x : (arg: T) => U
>arg : T
a6: <T extends Base, U extends Derived>(x: (arg: T) => U) => T; // ok, same as a5 but with object type hierarchy
>a6 : <T extends Base, U extends Derived>(x: (arg: T) => U) => T
>x : (arg: T) => U
>arg : T
a11: <T, U>(x: { foo: T }, y: { foo: U; bar: U }) => Base; // ok
>a11 : <T, U>(x: { foo: T; }, y: { foo: U; bar: U; }) => Base
>x : { foo: T; }
>foo : T
>y : { foo: U; bar: U; }
>foo : U
>bar : U
a15: <U, V>(x: { a: U; b: V; }) => U[]; // ok, T = U, T = V
>a15 : <U, V>(x: { a: U; b: V; }) => U[]
>x : { a: U; b: V; }
>a : U
>b : V
a16: <T>(x: { a: T; b: T }) => T[]; // ok, more general parameter type
>a16 : <T>(x: { a: T; b: T; }) => T[]
>x : { a: T; b: T; }
>a : T
>b : T
a17: <T>(x: (a: T) => T) => T[]; // ok
>a17 : <T>(x: (a: T) => T) => T[]
>x : (a: T) => T
>a : T
a18: (x: <T>(a: T) => T) => any[]; // ok
>a18 : (x: <T>(a: T) => T) => any[]
>x : <T>(a: T) => T
>a : T
}
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