=== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/callSignatureAssignabilityInInheritance2.ts ===
// checking subtype relations for function types as it relates to contextual signature instantiation

class Base { foo: string; }
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>foo : string, Symbol(foo, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 12))

class Derived extends Base { bar: string; }
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>bar : string, Symbol(bar, Decl(callSignatureAssignabilityInInheritance2.ts, 3, 28))

class Derived2 extends Derived { baz: string; }
>Derived2 : Derived2, Symbol(Derived2, Decl(callSignatureAssignabilityInInheritance2.ts, 3, 43))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>baz : string, Symbol(baz, Decl(callSignatureAssignabilityInInheritance2.ts, 4, 32))

class OtherDerived extends Base { bing: string; }
>OtherDerived : OtherDerived, Symbol(OtherDerived, Decl(callSignatureAssignabilityInInheritance2.ts, 4, 47))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>bing : string, Symbol(bing, Decl(callSignatureAssignabilityInInheritance2.ts, 5, 33))

interface A { // T
>A : A, Symbol(A, Decl(callSignatureAssignabilityInInheritance2.ts, 5, 49))

    // M's
    a: (x: number) => number[];
>a : (x: number) => number[], Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 7, 13))
>x : number, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 9, 8))

    a2: (x: number) => string[];
>a2 : (x: number) => string[], Symbol(a2, Decl(callSignatureAssignabilityInInheritance2.ts, 9, 31))
>x : number, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 10, 9))

    a3: (x: number) => void;
>a3 : (x: number) => void, Symbol(a3, Decl(callSignatureAssignabilityInInheritance2.ts, 10, 32))
>x : number, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 11, 9))

    a4: (x: string, y: number) => string;
>a4 : (x: string, y: number) => string, Symbol(a4, Decl(callSignatureAssignabilityInInheritance2.ts, 11, 28))
>x : string, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 12, 9))
>y : number, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 12, 19))

    a5: (x: (arg: string) => number) => string;
>a5 : (x: (arg: string) => number) => string, Symbol(a5, Decl(callSignatureAssignabilityInInheritance2.ts, 12, 41))
>x : (arg: string) => number, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 13, 9))
>arg : string, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 13, 13))

    a6: (x: (arg: Base) => Derived) => Base;
>a6 : (x: (arg: Base) => Derived) => Base, Symbol(a6, Decl(callSignatureAssignabilityInInheritance2.ts, 13, 47))
>x : (arg: Base) => Derived, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 14, 9))
>arg : Base, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 14, 13))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))

    a7: (x: (arg: Base) => Derived) => (r: Base) => Derived;
>a7 : (x: (arg: Base) => Derived) => (r: Base) => Derived, Symbol(a7, Decl(callSignatureAssignabilityInInheritance2.ts, 14, 44))
>x : (arg: Base) => Derived, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 15, 9))
>arg : Base, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 15, 13))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>r : Base, Symbol(r, Decl(callSignatureAssignabilityInInheritance2.ts, 15, 40))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))

    a8: (x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived;
>a8 : (x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived, Symbol(a8, Decl(callSignatureAssignabilityInInheritance2.ts, 15, 60))
>x : (arg: Base) => Derived, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 16, 9))
>arg : Base, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 16, 13))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>y : (arg2: Base) => Derived, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 16, 35))
>arg2 : Base, Symbol(arg2, Decl(callSignatureAssignabilityInInheritance2.ts, 16, 40))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>r : Base, Symbol(r, Decl(callSignatureAssignabilityInInheritance2.ts, 16, 68))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))

    a9: (x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived;
>a9 : (x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived, Symbol(a9, Decl(callSignatureAssignabilityInInheritance2.ts, 16, 88))
>x : (arg: Base) => Derived, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 17, 9))
>arg : Base, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 17, 13))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>y : (arg2: Base) => Derived, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 17, 35))
>arg2 : Base, Symbol(arg2, Decl(callSignatureAssignabilityInInheritance2.ts, 17, 40))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>r : Base, Symbol(r, Decl(callSignatureAssignabilityInInheritance2.ts, 17, 68))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))

    a10: (...x: Derived[]) => Derived;
>a10 : (...x: Derived[]) => Derived, Symbol(a10, Decl(callSignatureAssignabilityInInheritance2.ts, 17, 88))
>x : Derived[], Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 18, 10))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))

    a11: (x: { foo: string }, y: { foo: string; bar: string }) => Base;
>a11 : (x: { foo: string; }, y: { foo: string; bar: string; }) => Base, Symbol(a11, Decl(callSignatureAssignabilityInInheritance2.ts, 18, 38))
>x : { foo: string; }, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 19, 10))
>foo : string, Symbol(foo, Decl(callSignatureAssignabilityInInheritance2.ts, 19, 14))
>y : { foo: string; bar: string; }, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 19, 29))
>foo : string, Symbol(foo, Decl(callSignatureAssignabilityInInheritance2.ts, 19, 34))
>bar : string, Symbol(bar, Decl(callSignatureAssignabilityInInheritance2.ts, 19, 47))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))

    a12: (x: Array<Base>, y: Array<Derived2>) => Array<Derived>;
>a12 : (x: Base[], y: Derived2[]) => Derived[], Symbol(a12, Decl(callSignatureAssignabilityInInheritance2.ts, 19, 71))
>x : Base[], Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 20, 10))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>y : Derived2[], Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 20, 25))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Derived2 : Derived2, Symbol(Derived2, Decl(callSignatureAssignabilityInInheritance2.ts, 3, 43))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))

    a13: (x: Array<Base>, y: Array<Derived>) => Array<Derived>;
>a13 : (x: Base[], y: Derived[]) => Derived[], Symbol(a13, Decl(callSignatureAssignabilityInInheritance2.ts, 20, 64))
>x : Base[], Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 21, 10))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>y : Derived[], Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 21, 25))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))

    a14: (x: { a: string; b: number }) => Object;
>a14 : (x: { a: string; b: number; }) => Object, Symbol(a14, Decl(callSignatureAssignabilityInInheritance2.ts, 21, 63))
>x : { a: string; b: number; }, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 22, 10))
>a : string, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 22, 14))
>b : number, Symbol(b, Decl(callSignatureAssignabilityInInheritance2.ts, 22, 25))
>Object : Object, Symbol(Object, Decl(lib.d.ts, 92, 1), Decl(lib.d.ts, 223, 11))

    a15: {
>a15 : { (x: number): number[]; (x: string): string[]; }, Symbol(a15, Decl(callSignatureAssignabilityInInheritance2.ts, 22, 49))

        (x: number): number[];
>x : number, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 24, 9))

        (x: string): string[];
>x : string, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 25, 9))

    };
    a16: {
>a16 : { <T extends Derived>(x: T): number[]; <U extends Base>(x: U): number[]; }, Symbol(a16, Decl(callSignatureAssignabilityInInheritance2.ts, 26, 6))

        <T extends Derived>(x: T): number[];
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 28, 9))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>x : T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 28, 28))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 28, 9))

        <U extends Base>(x: U): number[];
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 29, 9))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>x : U, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 29, 25))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 29, 9))

    };
    a17: {
>a17 : { (x: (a: number) => number): number[]; (x: (a: string) => string): string[]; }, Symbol(a17, Decl(callSignatureAssignabilityInInheritance2.ts, 30, 6))

        (x: (a: number) => number): number[];
>x : (a: number) => number, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 32, 9))
>a : number, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 32, 13))

        (x: (a: string) => string): string[];
>x : (a: string) => string, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 33, 9))
>a : string, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 33, 13))

    };
    a18: {
>a18 : { (x: { (a: number): number; (a: string): string; }): any[]; (x: { (a: boolean): boolean; (a: Date): Date; }): any[]; }, Symbol(a18, Decl(callSignatureAssignabilityInInheritance2.ts, 34, 6))

        (x: {
>x : { (a: number): number; (a: string): string; }, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 36, 9))

            (a: number): number;
>a : number, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 37, 13))

            (a: string): string;
>a : string, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 38, 13))

        }): any[];
        (x: {
>x : { (a: boolean): boolean; (a: Date): Date; }, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 40, 9))

            (a: boolean): boolean;
>a : boolean, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 41, 13))

            (a: Date): Date;
>a : Date, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 42, 13))
>Date : Date, Symbol(Date, Decl(lib.d.ts, 633, 23), Decl(lib.d.ts, 815, 11))
>Date : Date, Symbol(Date, Decl(lib.d.ts, 633, 23), Decl(lib.d.ts, 815, 11))

        }): any[];
    };
}

// S's
interface I extends A {
>I : I, Symbol(I, Decl(callSignatureAssignabilityInInheritance2.ts, 45, 1))
>A : A, Symbol(A, Decl(callSignatureAssignabilityInInheritance2.ts, 5, 49))

    // N's
    a: <T>(x: T) => T[]; // ok, instantiation of N is a subtype of M, T is number
>a : <T>(x: T) => T[], Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 48, 23))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 50, 8))
>x : T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 50, 11))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 50, 8))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 50, 8))

    a2: <T>(x: T) => string[]; // ok
>a2 : <T>(x: T) => string[], Symbol(a2, Decl(callSignatureAssignabilityInInheritance2.ts, 50, 24))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 51, 9))
>x : T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 51, 12))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 51, 9))

    a3: <T>(x: T) => T; // ok since Base returns void
>a3 : <T>(x: T) => T, Symbol(a3, Decl(callSignatureAssignabilityInInheritance2.ts, 51, 30))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 52, 9))
>x : T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 52, 12))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 52, 9))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 52, 9))

    a4: <T, U>(x: T, y: U) => T; // ok, instantiation of N is a subtype of M, T is string, U is number
>a4 : <T, U>(x: T, y: U) => T, Symbol(a4, Decl(callSignatureAssignabilityInInheritance2.ts, 52, 23))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 53, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 53, 11))
>x : T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 53, 15))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 53, 9))
>y : U, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 53, 20))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 53, 11))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 53, 9))

    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, Symbol(a5, Decl(callSignatureAssignabilityInInheritance2.ts, 53, 32))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 54, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 54, 11))
>x : (arg: T) => U, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 54, 15))
>arg : T, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 54, 19))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 54, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 54, 11))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 54, 9))

    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, Symbol(a6, Decl(callSignatureAssignabilityInInheritance2.ts, 54, 38))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 55, 9))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 55, 24))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>x : (arg: T) => U, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 55, 44))
>arg : T, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 55, 48))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 55, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 55, 24))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 55, 9))

    a7: <T extends Base, U extends Derived>(x: (arg: T) => U) => (r: T) => U; // ok
>a7 : <T extends Base, U extends Derived>(x: (arg: T) => U) => (r: T) => U, Symbol(a7, Decl(callSignatureAssignabilityInInheritance2.ts, 55, 67))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 9))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 24))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>x : (arg: T) => U, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 44))
>arg : T, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 48))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 24))
>r : T, Symbol(r, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 66))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 24))

    a8: <T extends Base, U extends Derived>(x: (arg: T) => U, y: (arg2: T) => U) => (r: T) => U; // ok
>a8 : <T extends Base, U extends Derived>(x: (arg: T) => U, y: (arg2: T) => U) => (r: T) => U, Symbol(a8, Decl(callSignatureAssignabilityInInheritance2.ts, 56, 77))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 9))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 24))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>x : (arg: T) => U, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 44))
>arg : T, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 48))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 24))
>y : (arg2: T) => U, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 61))
>arg2 : T, Symbol(arg2, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 66))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 24))
>r : T, Symbol(r, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 85))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 24))

    a9: <T extends Base, U extends Derived>(x: (arg: T) => U, y: (arg2: { foo: string; bing: number }) => U) => (r: T) => U; // ok, same as a8 with compatible object literal
>a9 : <T extends Base, U extends Derived>(x: (arg: T) => U, y: (arg2: { foo: string; bing: number; }) => U) => (r: T) => U, Symbol(a9, Decl(callSignatureAssignabilityInInheritance2.ts, 57, 96))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 9))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 24))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>x : (arg: T) => U, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 44))
>arg : T, Symbol(arg, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 48))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 24))
>y : (arg2: { foo: string; bing: number; }) => U, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 61))
>arg2 : { foo: string; bing: number; }, Symbol(arg2, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 66))
>foo : string, Symbol(foo, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 73))
>bing : number, Symbol(bing, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 86))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 24))
>r : T, Symbol(r, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 113))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 9))
>U : U, Symbol(U, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 24))

    a10: <T extends Derived>(...x: T[]) => T; // ok
>a10 : <T extends Derived>(...x: T[]) => T, Symbol(a10, Decl(callSignatureAssignabilityInInheritance2.ts, 58, 124))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 59, 10))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>x : T[], Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 59, 29))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 59, 10))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 59, 10))

    a11: <T extends Base>(x: T, y: T) => T; // ok
>a11 : <T extends Base>(x: T, y: T) => T, Symbol(a11, Decl(callSignatureAssignabilityInInheritance2.ts, 59, 45))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 60, 10))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>x : T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 60, 26))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 60, 10))
>y : T, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 60, 31))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 60, 10))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 60, 10))

    a12: <T extends Array<Base>>(x: Array<Base>, y: T) => Array<Derived>; // ok, less specific parameter type
>a12 : <T extends Base[]>(x: Base[], y: T) => Derived[], Symbol(a12, Decl(callSignatureAssignabilityInInheritance2.ts, 60, 43))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 61, 10))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>x : Base[], Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 61, 33))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>y : T, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 61, 48))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 61, 10))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))

    a13: <T extends Array<Derived>>(x: Array<Base>, y: T) => T; // ok, T = Array<Derived>, satisfies constraint, contextual signature instantiation succeeds
>a13 : <T extends Derived[]>(x: Base[], y: T) => T, Symbol(a13, Decl(callSignatureAssignabilityInInheritance2.ts, 61, 73))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 62, 10))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Derived : Derived, Symbol(Derived, Decl(callSignatureAssignabilityInInheritance2.ts, 2, 27))
>x : Base[], Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 62, 36))
>Array : T[], Symbol(Array, Decl(lib.d.ts, 1000, 23), Decl(lib.d.ts, 1171, 11))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>y : T, Symbol(y, Decl(callSignatureAssignabilityInInheritance2.ts, 62, 51))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 62, 10))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 62, 10))

    a14: <T>(x: { a: T; b: T }) => T; // ok, best common type yields T = {} but that's satisfactory for this signature
>a14 : <T>(x: { a: T; b: T; }) => T, Symbol(a14, Decl(callSignatureAssignabilityInInheritance2.ts, 62, 63))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 63, 10))
>x : { a: T; b: T; }, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 63, 13))
>a : T, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 63, 17))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 63, 10))
>b : T, Symbol(b, Decl(callSignatureAssignabilityInInheritance2.ts, 63, 23))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 63, 10))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 63, 10))

    a15: <T>(x: T) => T[]; // ok
>a15 : <T>(x: T) => T[], Symbol(a15, Decl(callSignatureAssignabilityInInheritance2.ts, 63, 37))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 64, 10))
>x : T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 64, 13))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 64, 10))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 64, 10))

    a16: <T extends Base>(x: T) => number[]; // ok
>a16 : <T extends Base>(x: T) => number[], Symbol(a16, Decl(callSignatureAssignabilityInInheritance2.ts, 64, 26))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 65, 10))
>Base : Base, Symbol(Base, Decl(callSignatureAssignabilityInInheritance2.ts, 0, 0))
>x : T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 65, 26))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 65, 10))

    a17: <T>(x: (a: T) => T) => T[]; // ok
>a17 : <T>(x: (a: T) => T) => T[], Symbol(a17, Decl(callSignatureAssignabilityInInheritance2.ts, 65, 44))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 66, 10))
>x : (a: T) => T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 66, 13))
>a : T, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 66, 17))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 66, 10))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 66, 10))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 66, 10))

    a18: <T>(x: (a: T) => T) => T[]; // ok, no inferences for T but assignable to any
>a18 : <T>(x: (a: T) => T) => T[], Symbol(a18, Decl(callSignatureAssignabilityInInheritance2.ts, 66, 36))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 67, 10))
>x : (a: T) => T, Symbol(x, Decl(callSignatureAssignabilityInInheritance2.ts, 67, 13))
>a : T, Symbol(a, Decl(callSignatureAssignabilityInInheritance2.ts, 67, 17))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 67, 10))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 67, 10))
>T : T, Symbol(T, Decl(callSignatureAssignabilityInInheritance2.ts, 67, 10))
}