tests/cases/conformance/es6/destructuring/optionalBindingParameters1.ts(2,14): error TS2463: A binding pattern parameter cannot be optional in an implementation signature.
tests/cases/conformance/es6/destructuring/optionalBindingParameters1.ts(8,5): error TS2345: Argument of type '[boolean, number, string]' is not assignable to parameter of type '[string, number, boolean]'.