no-unreadable-iife.md

no-unreadable-iife

📝 Disallow unreadable IIFEs.

💼 This rule is enabled in the following configs: ✅ recommended, ☑️ unopinionated.

IIFE with parenthesized arrow function body is considered unreadable.

Examples

// ❌
const foo = (bar => (bar ? bar.baz : baz))(getBar());

// ✅
const bar = getBar();
const foo = bar ? bar.baz : baz;

// ✅
const getBaz = bar => (bar ? bar.baz : baz);
const foo = getBaz(getBar());

// ❌
const foo = ((bar, baz) => ({bar, baz}))(bar, baz);

// ✅
const foo = (bar => {
	return bar ? bar.baz : baz;
})(getBar());