switch-case-braces.md

Enforce consistent brace style for case clauses

💼 This rule is enabled in the ✅ recommended config.

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

1. Forbid braces for empty clauses.
2. Enforce braces for non-empty clauses.

Fail

switch (foo) {
	case 1: {
	}
	case 2: {
		doSomething();
		break;
	}
}

switch (foo) {
	case 1:
		doSomething();
		break;
}

Pass

switch (foo) {
	case 1: {
		doSomething();
		break;
	}
}

Options

Type: string
Default: 'always'

• 'always' (default)
  • Always report when clause is not a BlockStatement.
• 'avoid'
  • Only allow braces when there are variable declaration or function declaration which requires a scope.

The following cases are considered valid:

// eslint unicorn/switch-case-braces: ["error", "avoid"]
switch (foo) {
	case 1:
		doSomething();
		break;
}

// eslint unicorn/switch-case-braces: ["error", "avoid"]
switch (foo) {
	case 1: {
		const bar = 2;
		doSomething(bar);
		break;
	}
}

The following case is considered invalid:

// eslint unicorn/switch-case-braces: ["error", "avoid"]
switch (foo) {
	case 1: {
		doSomething();
		break;
	}
}