Function setOwnText

packages/sdk/src/engine/model.ts:255–281

(el: Element, text: string)

/** Replace the SDK text target without destroying multi-child element structure. */
export function setOwnText(el: Element, text: string): void {
  const singleChild = resolveSingleChildTextTarget(el);
  if (singleChild) {
    singleChild.textContent = text;
    return;
  }

  const doc = el.ownerDocument;
  const children = Array.from(el.childNodes);
  // Track original position of the first text node so we restore there, not at firstChild.
  let firstTextIdx = -1;
  for (let i = 0; i < children.length; i++) {
    if (children[i]?.nodeType === 3) {
      firstTextIdx = i;
      break;
    }
  }
  for (const child of children) {
    if (child.nodeType === 3) el.removeChild(child);
  }
  if (text) {
    // No text nodes before firstTextIdx (it's the first one), so index is stable.
    const current = Array.from(el.childNodes);
    const ref = firstTextIdx >= 0 ? (current[firstTextIdx] ?? null) : null;
    el.insertBefore(doc.createTextNode(text), ref);
  }
}

// ─── CSS style helpers ────────────────────────────────────────────────────────