[no-unnecessary-condition] should enable ignoreRhs

[EdJoPaTo]

The rule option ignoreRhs should be enabled. This is an error I had which is gone with the option enabled:

interface Foo {
	bar?: string[];
}

const obj: Foo = {};
const alwaysArray = obj.bar || [];

With message 6:32 Unnecessary conditional, value is always truthy. which marks the array on the right side as unnecessary condition as [] is always true. Which is exactly what I want in this case.

Documentation: https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/no-unnecessary-condition.md

[yangmingshan]

I need this too, it's very useful in jsx.

{condition && <SomeComponent />}