Function isBalanced

e2e/slack-api.ts:241–264

(text: string)

 * language line) but no closer.
 */
export function isBalanced(text: string): boolean {
  if (!text) return true;

  // ── Fences ─────────────────────────────────────────────────────
  const fences = (text.match(/```/g) || []).length;
  if (fences % 2 !== 0) {
    const lastFenceIdx = text.lastIndexOf("```");
    const tail = text.slice(lastFenceIdx + 3);
    const nl = tail.indexOf("\n");
    const codeBody = nl >= 0 ? tail.slice(nl + 1) : "";
    if (/\S/.test(codeBody)) return false; // real content past the lang line
    // else: just-opened fence; treat as balanced
  }

  // ── Inline backticks (outside fences) ──────────────────────────
  const noFence = text.replace(/```[\s\S]*?```/g, "");
  const inline = (noFence.match(/`/g) || []).length;
  if (inline % 2 !== 0) {
    const lastBt = noFence.lastIndexOf("`");
    const after = noFence.slice(lastBt + 1);
    if (/\S/.test(after)) return false; // real content past the open backtick
  }
  return true;
}