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fix(highlight): prevent creating extra <span>'s (#1)
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@@ -151,14 +151,34 @@ export class HighlightEngine {
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for (const node of textNodes) {
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if (!node.nodeValue || !pattern.test(node.nodeValue)) continue;
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const span = document.createElement('span');
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span.innerHTML = node.nodeValue.replace(pattern, (match) => {
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const lookup = matchCase ? match : match.toLowerCase();
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const fragment = document.createDocumentFragment();
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const text = node.nodeValue;
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let lastIndex = 0;
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pattern.lastIndex = 0;
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let match;
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while ((match = pattern.exec(text)) !== null) {
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if (match.index > lastIndex) {
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fragment.appendChild(document.createTextNode(text.substring(lastIndex, match.index)));
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}
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const lookup = matchCase ? match[0] : match[0].toLowerCase();
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const className = this.wordStyleMap.get(lookup) || 'highlighted-word-0';
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return `<span data-gh class="${className}">${match}</span>`;
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});
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const highlightSpan = document.createElement('span');
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highlightSpan.setAttribute('data-gh', '');
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highlightSpan.className = className;
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highlightSpan.textContent = match[0];
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fragment.appendChild(highlightSpan);
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lastIndex = pattern.lastIndex;
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}
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if (lastIndex < text.length) {
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fragment.appendChild(document.createTextNode(text.substring(lastIndex)));
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}
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node.parentNode?.replaceChild(span, node);
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node.parentNode?.replaceChild(fragment, node);
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}
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} catch (e) {
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console.error('Regex error:', e);
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