Function isControl

src/interpreter/control.ts:77–97

(v: Value | Control | Reference)

}

export function isControl(v: Value | Control | Reference): v is Control {
	switch (v.type) {
		case 'null':
		case 'bool':
		case 'num':
		case 'str':
		case 'arr':
		case 'obj':
		case 'fn':
		case 'error':
		case 'reference':
			return false;
		case 'return':
		case 'break':
		case 'continue':
			return true;
	}
	// exhaustive check
	v satisfies never;
	throw new TypeError('expected value or control');
}