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tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithCallSignatures4.ts(52,9): error TS2322: Type '<T extends Base, U extends Derived>(x: (arg: T) => U, y: (arg2: { foo: number; }) => U) => (r: T) => U' is not assignable to type '(x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived'.
Types of parameters 'y' and 'y' are incompatible.
Type '(arg2: Base) => Derived' is not assignable to type '(arg2: { foo: number; }) => any'.
Types of parameters 'arg2' and 'arg2' are incompatible.
Type '{ foo: number; }' is not assignable to type 'Base'.
Types of property 'foo' are incompatible.
Type 'number' is not assignable to type 'string'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithCallSignatures4.ts(53,9): error TS2322: Type '(x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived' is not assignable to type '<T extends Base, U extends Derived>(x: (arg: T) => U, y: (arg2: { foo: number; }) => U) => (r: T) => U'.
Types of parameters 'y' and 'y' are incompatible.
Type '(arg2: { foo: number; }) => any' is not assignable to type '(arg2: Base) => Derived'.
Types of parameters 'arg2' and 'arg2' are incompatible.
Type 'Base' is not assignable to type '{ foo: number; }'.
Types of property 'foo' are incompatible.
Type 'string' is not assignable to type 'number'.
==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithCallSignatures4.ts (2 errors) ====
// These are mostly permitted with the current loose rules. All ok unless otherwise noted.
module Errors {
class Base { foo: string; }
class Derived extends Base { bar: string; }
class Derived2 extends Derived { baz: string; }
class OtherDerived extends Base { bing: string; }
module WithNonGenericSignaturesInBaseType {
// target type with non-generic call signatures
var a2: (x: number) => string[];
var a7: (x: (arg: Base) => Derived) => (r: Base) => Derived2;
var a8: (x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived;
var a10: (...x: Base[]) => Base;
var a11: (x: { foo: string }, y: { foo: string; bar: string }) => Base;
var a12: (x: Array<Base>, y: Array<Derived2>) => Array<Derived>;
var a14: {
(x: number): number[];
(x: string): string[];
};
var a15: (x: { a: string; b: number }) => number;
var a16: {
(x: {
(a: number): number;
(a?: number): number;
}): number[];
(x: {
(a: boolean): boolean;
(a?: boolean): boolean;
}): boolean[];
};
var a17: {
(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[];
};
var b2: <T, U>(x: T) => U[];
a2 = b2;
b2 = a2;
var b7: <T extends Base, U extends Derived, V extends Derived2>(x: (arg: T) => U) => (r: T) => V;
a7 = b7;
b7 = a7;
var b8: <T extends Base, U extends Derived>(x: (arg: T) => U, y: (arg2: { foo: number; }) => U) => (r: T) => U;
a8 = b8; // error, { foo: number } and Base are incompatible
~~
!!! error TS2322: Type '<T extends Base, U extends Derived>(x: (arg: T) => U, y: (arg2: { foo: number; }) => U) => (r: T) => U' is not assignable to type '(x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived'.
!!! error TS2322: Types of parameters 'y' and 'y' are incompatible.
!!! error TS2322: Type '(arg2: Base) => Derived' is not assignable to type '(arg2: { foo: number; }) => any'.
!!! error TS2322: Types of parameters 'arg2' and 'arg2' are incompatible.
!!! error TS2322: Type '{ foo: number; }' is not assignable to type 'Base'.
!!! error TS2322: Types of property 'foo' are incompatible.
!!! error TS2322: Type 'number' is not assignable to type 'string'.
b8 = a8; // error, { foo: number } and Base are incompatible
~~
!!! error TS2322: Type '(x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived' is not assignable to type '<T extends Base, U extends Derived>(x: (arg: T) => U, y: (arg2: { foo: number; }) => U) => (r: T) => U'.
!!! error TS2322: Types of parameters 'y' and 'y' are incompatible.
!!! error TS2322: Type '(arg2: { foo: number; }) => any' is not assignable to type '(arg2: Base) => Derived'.
!!! error TS2322: Types of parameters 'arg2' and 'arg2' are incompatible.
!!! error TS2322: Type 'Base' is not assignable to type '{ foo: number; }'.
!!! error TS2322: Types of property 'foo' are incompatible.
!!! error TS2322: Type 'string' is not assignable to type 'number'.
var b10: <T extends Derived>(...x: T[]) => T;
a10 = b10;
b10 = a10;
var b11: <T extends Derived>(x: T, y: T) => T;
a11 = b11;
b11 = a11;
var b12: <T extends Array<Derived2>>(x: Array<Base>, y: Array<Base>) => T;
a12 = b12;
b12 = a12;
var b15: <T>(x: { a: T; b: T }) => T;
a15 = b15;
b15 = a15;
var b15a: <T extends Base>(x: { a: T; b: T }) => number;
a15 = b15a;
b15a = a15;
var b16: <T>(x: (a: T) => T) => T[];
a16 = b16;
b16 = a16;
var b17: <T>(x: (a: T) => T) => any[];
a17 = b17;
b17 = a17;
}
module WithGenericSignaturesInBaseType {
// target type has generic call signature
var a2: <T>(x: T) => T[];
var b2: <T>(x: T) => string[];
a2 = b2;
b2 = a2;
// target type has generic call signature
var a3: <T>(x: T) => string[];
var b3: <T>(x: T) => T[];
a3 = b3;
b3 = a3;
}
}
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