Function execute

@commitlint/execute-rule/src/index.ts:9–19

(rule?: Rule<T>)

export default execute;

export async function execute<T = unknown>(rule?: Rule<T>): Promise<ExecutedRule<T> | null> {
	if (!Array.isArray(rule)) {
		return null;
	}

	const [name, config] = rule;

	const fn = executable(config) ? config : async () => config;

	return [name, await fn()];
}

function executable<T>(config: Config<T>): config is ExectableConfig<T> {
	return typeof config === "function";