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tests/cases/compiler/assignLambdaToNominalSubtypeOfFunction.ts(7,4): error TS2345: Argument of type '(a: any, b: any) => boolean' is not assignable to parameter of type 'IResultCallback'.
Property 'x' is missing in type '(a: any, b: any) => boolean' but required in type 'IResultCallback'.
tests/cases/compiler/assignLambdaToNominalSubtypeOfFunction.ts(8,4): error TS2345: Argument of type '(a: any, b: any) => boolean' is not assignable to parameter of type 'IResultCallback'.
Property 'x' is missing in type '(a: any, b: any) => boolean' but required in type 'IResultCallback'.
==== tests/cases/compiler/assignLambdaToNominalSubtypeOfFunction.ts (2 errors) ====
interface IResultCallback extends Function {
x: number;
}
function fn(cb: IResultCallback) { }
fn((a, b) => true);
~~~~~~~~~~~~~~
!!! error TS2345: Argument of type '(a: any, b: any) => boolean' is not assignable to parameter of type 'IResultCallback'.
!!! error TS2345: Property 'x' is missing in type '(a: any, b: any) => boolean' but required in type 'IResultCallback'.
!!! related TS2728 tests/cases/compiler/assignLambdaToNominalSubtypeOfFunction.ts:2:5: 'x' is declared here.
fn(function (a, b) { return true; })
~~~~~~~~
!!! error TS2345: Argument of type '(a: any, b: any) => boolean' is not assignable to parameter of type 'IResultCallback'.
!!! error TS2345: Property 'x' is missing in type '(a: any, b: any) => boolean' but required in type 'IResultCallback'.
!!! related TS2728 tests/cases/compiler/assignLambdaToNominalSubtypeOfFunction.ts:2:5: 'x' is declared here.
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