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tests/cases/compiler/overload1.ts(27,5): error TS2322: Type 'C' is not assignable to type 'string'.
tests/cases/compiler/overload1.ts(29,1): error TS2322: Type 'number' is not assignable to type 'string'.
tests/cases/compiler/overload1.ts(31,11): error TS2554: Expected 1-2 arguments, but got 3.
tests/cases/compiler/overload1.ts(32,5): error TS2554: Expected 1-2 arguments, but got 0.
tests/cases/compiler/overload1.ts(33,1): error TS2322: Type 'C' is not assignable to type 'string'.
tests/cases/compiler/overload1.ts(34,3): error TS2769: No overload matches this call.
Overload 1 of 2, '(s1: string, s2: number): string', gave the following error.
Argument of type 'number' is not assignable to parameter of type 'string'.
Overload 2 of 2, '(s1: number, s2: string): number', gave the following error.
Argument of type 'number' is not assignable to parameter of type 'string'.
==== tests/cases/compiler/overload1.ts (6 errors) ====
module O {
export class A {
}
export class B extends A {
}
export class C extends B {
}
export interface I {
f(s:string):number;
f(n:number):string;
g(n1:number,n2:number):number;
g(n:number):string;
g(a:A):C;
g(c:C):string;
h(s1:string,s2:number):string;
h(s1:number,s2:string):number;
}
}
declare var x:O.I;
var e:string=x.g(new O.A()); // matches overload but bad assignment
~
!!! error TS2322: Type 'C' is not assignable to type 'string'.
var y:string=x.f(3); // good
y=x.f("nope"); // can't assign number to string
~
!!! error TS2322: Type 'number' is not assignable to type 'string'.
var z:string=x.g(x.g(3,3)); // good
z=x.g(2,2,2); // no match
~
!!! error TS2554: Expected 1-2 arguments, but got 3.
z=x.g(); // no match
~~~
!!! error TS2554: Expected 1-2 arguments, but got 0.
!!! related TS6210 tests/cases/compiler/overload1.ts:17:11: An argument for 'n' was not provided.
z=x.g(new O.B()); // ambiguous (up and down conversion)
~
!!! error TS2322: Type 'C' is not assignable to type 'string'.
z=x.h(2,2); // no match
~~~~~~~~
!!! error TS2769: No overload matches this call.
!!! error TS2769: Overload 1 of 2, '(s1: string, s2: number): string', gave the following error.
!!! error TS2769: Argument of type 'number' is not assignable to parameter of type 'string'.
!!! error TS2769: Overload 2 of 2, '(s1: number, s2: string): number', gave the following error.
!!! error TS2769: Argument of type 'number' is not assignable to parameter of type 'string'.
z=x.h("hello",0); // good
var v=x.g;
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