Method copyAttributes

src/map-style.js:86–95

(source, target)

    }

    function copyAttributes(source, target) {
      return Array.from(source.attributes).forEach((attribute) => {
        if (
          attribute.nodeName !== 'media' &&
          attribute.nodeName !== 'data-testid'
        ) {
          target.setAttribute(attribute.nodeName, attribute.nodeValue);
        }
      });
    }

    // use observer to monitor the changes in mapStyle textContent
    this._observer = new MutationObserver(() => {