ui-lit/helpers/getRalative.js

UI Elements on LIT

const _set = new Set();
export const getRootRalitive = (current) => {
    _set.clear();
    while (window.getComputedStyle(current).position !== 'relative') {
        if (current.shadowRoot) {
            const slot = current.shadowRoot.querySelector('slot:not([name])');
            if (slot && !_set.has(slot)) {
                _set.add(slot);
                current = slot;
            }
        }
        current = current.parentNode;
        if (current instanceof ShadowRoot) {
            current = current.host;
        }
        if (current === document.body || !current) {
            return document.body;
        }
    }
    return current;
};