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tests/cases/conformance/es6/destructuring/optionalBindingParameters2.ts(2,14): error TS2463: A binding pattern parameter cannot be optional in an implementation signature.
tests/cases/conformance/es6/destructuring/optionalBindingParameters2.ts(8,5): error TS2345: Argument of type '{ x: boolean; y: number; z: ""; }' is not assignable to parameter of type '{ x: string; y: number; z: boolean; }'.
Types of property 'x' are incompatible.
Type 'boolean' is not assignable to type 'string'.
==== tests/cases/conformance/es6/destructuring/optionalBindingParameters2.ts (2 errors) ====
function foo({ x, y, z }?: { x: string; y: number; z: boolean }) {
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2463: A binding pattern parameter cannot be optional in an implementation signature.
}
foo({ x: "", y: 0, z: false });
foo({ x: false, y: 0, z: "" });
~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2345: Argument of type '{ x: boolean; y: number; z: ""; }' is not assignable to parameter of type '{ x: string; y: number; z: boolean; }'.
!!! error TS2345: Types of property 'x' are incompatible.
!!! error TS2345: Type 'boolean' is not assignable to type 'string'.
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