tests/cases/compiler/overloadsWithProvisionalErrors.ts(6,6): error TS2345: Argument of type '(s: string) => {}' is not assignable to parameter of type '(s: string) => { a: number; b: number; }'.
tests/cases/compiler/overloadsWithProvisionalErrors.ts(7,17): error TS2304: Cannot find name 'blah'.
tests/cases/compiler/overloadsWithProvisionalErrors.ts(8,6): error TS2345: Argument of type '(s: string) => { a: any; }' is not assignable to parameter of type '(s: string) => { a: number; b: number; }'.