element-vir/dist/declarative-element/has-declarative-element-parent.js

Heroic. Reactive. Declarative. Type safe. Web components without compromise.

import { DeclarativeElement } from './declarative-element.js';
export function hasDeclarativeElementParent(input) {
    const rootNode = input.getRootNode();
    if (!(rootNode instanceof ShadowRoot)) {
        // declarative elements all use shadow DOM, so if a shadow root doesn't exist then we're not
        // in a declarative element.
        return false;
    }
    const host = rootNode.host;
    if (host instanceof DeclarativeElement) {
        return true;
    }
    else {
        return hasDeclarativeElementParent(host);
    }
}