src/shared/utils/closest/closest.js
const matchFunction =
Element.prototype.matches ||
Element.prototype.webkitMatchesSelector ||
Element.prototype.mozMatchesSelector ||
Element.prototype.msMatchesSelector;
/**
* Get the closest parent element of a given element that matches the given
* selector string or matching function
*
* @param {Element} element The child element to find a parent of
* @param {String|Function} selector The string or function to use to match
* the parent element
* @return {Element|null}
*/
export default function closest(element, value) {
if (!element) {
return null;
}
const selector = value;
const callback = value;
const nodeList = value;
const singleElement = value;
const isSelector = Boolean(typeof value === 'string');
const isFunction = Boolean(typeof value === 'function');
const isNodeList = Boolean(value instanceof NodeList || value instanceof Array);
const isElement = Boolean(value instanceof HTMLElement);
function conditionFn(currentElement) {
if (!currentElement) {
return currentElement;
} else if (isSelector) {
return matchFunction.call(currentElement, selector);
} else if (isNodeList) {
return [...nodeList].includes(currentElement);
} else if (isElement) {
return singleElement === currentElement;
} else if (isFunction) {
return callback(currentElement);
} else {
return null;
}
}
let current = element;
do {
current = current.correspondingUseElement || current.correspondingElement || current;
if (conditionFn(current)) {
return current;
}
current = current.parentNode;
} while (current && current !== document.body && current !== document);
return null;
}