Function isHex32

packages/browser/src/profiling/utils.ts:267–267

(val: unknown)

    // profiler_id and chunk_id must be 32 lowercase hex chars
    const isHex32 = (val: unknown): boolean => typeof val === 'string' && /^[a-f0-9]{32}$/.test(val);
    if (!isHex32(chunk.profiler_id)) {
      return { reason: 'missing or invalid profiler_id' };
    }