Use Map instead of object for flat flexsearch results

    var results = index.search(searchQuery, {limit: maxResult, enrich: true});

    // flatten results since index.search() returns results for each indexed field

    const flatResults = {}; // keyed by href to dedupe results

    const flatResults = new Map(); // keyed by href to dedupe results

    for (const result of results.flatMap(r => r.result)) {

      flatResults[result.doc.href] = result.doc;

      if (flatResults.has(result.doc.href)) continue;

      flatResults.set(result.doc.href, result.doc);

    }

    suggestions.innerHTML = "";

    suggestions.classList.remove('d-none');

    // construct a list of suggestions

    for(const href in flatResults) {

        const doc = flatResults[href];

    for(const [href, doc] of flatResults) {

        const entry = document.createElement('div');

        suggestions.appendChild(entry);