Function closest

src/utils.js:46–69

(/**HTMLElement*/el, /**String*/selector, /**HTMLElement*/ctx, includeCTX)

}

function closest(/**HTMLElement*/el, /**String*/selector, /**HTMLElement*/ctx, includeCTX) {
	if (el) {
		ctx = ctx || document;

		do {
			if (
				selector != null &&
				(
					selector[0] === '>' ?
					el.parentNode === ctx && matches(el, selector) :
					matches(el, selector)
				) ||
				includeCTX && el === ctx
			) {
				return el;
			}

			if (el === ctx) break;
			/* jshint boss:true */
		} while (el = getParentOrHost(el));
	}

	return null;
}

const R_SPACE = /\s+/g;