oliveskspaces/js/fix-annotation-spaces.js

(function () {
  if (window.__miradorSpaceFixInitialized) return;
  window.__miradorSpaceFixInitialized = true;

  const observer = new MutationObserver((mutations) => {
    const elements = document.querySelectorAll(
      ".mirador-third-party-html:not([data-fixed])"
    );

    elements.forEach((el) => {
      // Create a TreeWalker to find all text nodes inside this container
      const walker = document.createTreeWalker(
        el,
        NodeFilter.SHOW_TEXT,
        null,
        false
      );
      let node;

      while ((node = walker.nextNode())) {
        // Replace both non-breaking space characters and entity text if present
        if (node.nodeValue) {
          node.nodeValue = node.nodeValue
            .replace(/\u00A0/g, " ")
            .replace(/ /g, " ");
        }
      }

      el.setAttribute("data-fixed", "true");
    });
  });

  observer.observe(document.body, {
    childList: true,
    subtree: true,
  });
})();