Function setOverlayId

core/src/utils/overlays.ts:115–120

(el: T)

 * Used to track unique instances of an overlay element.
 */
export const setOverlayId = <T extends HTMLIonOverlayElement>(el: T) => {
  if (!el.hasAttribute('id')) {
    el.id = `ion-overlay-${++lastId}`;
  }
  return el.id;
};

export const createOverlay = <T extends HTMLIonOverlayElement>(
  tagName: string,