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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, ""]' is not assignable to parameter of type '[string, number, boolean]'.
Type 'boolean' is not assignable to type 'string'.
==== tests/cases/conformance/es6/destructuring/optionalBindingParameters1.ts (2 errors) ====
function foo([x,y,z]?: [string, number, boolean]) {
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2463: A binding pattern parameter cannot be optional in an implementation signature.
}
foo(["", 0, false]);
foo([false, 0, ""]);
~~~~~~~~~~~~~~
!!! error TS2345: Argument of type '[boolean, number, ""]' is not assignable to parameter of type '[string, number, boolean]'.
!!! error TS2345: Type 'boolean' is not assignable to type 'string'.
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