@exadel/esl/modules/esl-utils/misc/url.js

Exadel Smart Library (ESL) is the lightweight custom elements library that provide a set of super-flexible components

/**
 * Converts relative URL to absolute URL based on the base URL.
 * @param relative - relative URL
 * @param base - base URL (document.baseURI by default)
 **/
export function toAbsoluteUrl(relative, base = document.baseURI) {
    return new URL(relative, base).href;
}