tests/cases/conformance/parser/ecmascript5/ParameterLists/parserParameterList15.ts(1,1): error TS2394: Overload signature is not compatible with function implementation.
tests/cases/conformance/parser/ecmascript5/ParameterLists/parserParameterList15.ts(1,14): error TS2371: A parameter initializer is only allowed in a function or constructor implementation.