@aventum/hooks/src/createHasHook.js

A universal, lightweight & efficient EventManager/PluginsSystem/MiddlewareManager/ExtendabilitySystem for JavaScript

/**
 * Returns a function which, when invoked, will return whether any handlers are
 * attached to a particular hook.
 *
 * @param  {Object}   hooks Stored hooks, keyed by hook name.
 *
 * @return {Function}       Function that returns whether any handlers are
 *                          attached to a particular hook.
 */
function createHasHook( hooks ) {
	/**
	 * Returns how many handlers are attached for the given hook.
	 *
	 * @param  {string}  hookName The name of the hook to check for.
	 *
	 * @return {boolean} Whether there are handlers that are attached to the given hook.
	 */
	return function hasHook( hookName ) {
		return hookName in hooks;
	};
}

export default createHasHook;