Prefer consistent types when spreading a ternary in an array literal

💼 This rule is enabled in the ✅ recommended config.

🔧 This rule is automatically fixable by the --fix CLI option.

When spreading a ternary in an array, we can use both [] and '' as fallbacks, but it's better to have consistent types in both branches.

Fail

const array = [
	a,
	...(foo ? [b, c] : ''),
];

const array = [
	a,
	...(foo ? 'bc' : []),
];

Pass

const array = [
	a,
	...(foo ? [b, c] : []),
];

const array = [
	a,
	...(foo ? 'bc' : ''),
];