Function readBalancedBlock

packages/cli/src/commands/keyframes.ts:263–277

(text: string, openBrace: number)

// ── CSS / Anime extraction ───────────────────────────────────────────────────

function readBalancedBlock(text: string, openBrace: number): { body: string; end: number } | null {
  if (text[openBrace] !== "{") return null;
  let depth = 0;
  for (let i = openBrace; i < text.length; i++) {
    const ch = text[i];
    if (ch === "{") depth++;
    else if (ch === "}") {
      depth--;
      if (depth === 0) {
        return { body: text.slice(openBrace + 1, i), end: i + 1 };
      }
    }
  }
  return null;
}

function parseDeclarations(body: string): string[] {
  return body