Method add

packages/foliate-js/overlayer.js:24–31

(key, range, draw, options)

    return this.#svg;
  }
  add(key, range, draw, options) {
    if (this.#map.has(key)) this.remove(key);
    const resolvedRange = typeof range === "function" ? range(this.#svg.getRootNode()) : range;
    const rects = resolvedRange.getClientRects();
    const element = draw(rects, options);
    this.#content.append(element);
    this.#map.set(key, { range: resolvedRange, draw, options, element, rects });
  }
  remove(key) {
    if (!this.#map.has(key)) return;
    this.#map.get(key).element.remove();