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tests/cases/compiler/optionalParamTypeComparison.ts(4,1): error TS2322: Type '(s: string, b?: boolean) => void' is not assignable to type '(s: string, n?: number) => void'.
Types of parameters 'b' and 'n' are incompatible.
Type 'number' is not assignable to type 'boolean'.
tests/cases/compiler/optionalParamTypeComparison.ts(5,1): error TS2322: Type '(s: string, n?: number) => void' is not assignable to type '(s: string, b?: boolean) => void'.
Types of parameters 'n' and 'b' are incompatible.
Type 'boolean' is not assignable to type 'number'.
==== tests/cases/compiler/optionalParamTypeComparison.ts (2 errors) ====
var f: (s: string, n?: number) => void;
var g: (s: string, b?: boolean) => void;
f = g;
~
!!! error TS2322: Type '(s: string, b?: boolean) => void' is not assignable to type '(s: string, n?: number) => void'.
!!! error TS2322: Types of parameters 'b' and 'n' are incompatible.
!!! error TS2322: Type 'number' is not assignable to type 'boolean'.
g = f;
~
!!! error TS2322: Type '(s: string, n?: number) => void' is not assignable to type '(s: string, b?: boolean) => void'.
!!! error TS2322: Types of parameters 'n' and 'b' are incompatible.
!!! error TS2322: Type 'boolean' is not assignable to type 'number'.
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