Function base64ToArrayBuffer

packages/ai-grok/src/utils/audio.ts:204–218

(base64: string)

}

function base64ToArrayBuffer(base64: string): ArrayBuffer {
  let binary: string
  try {
    binary = atob(base64)
  } catch (err) {
    const msg = err instanceof Error ? err.message : String(err)
    throw new Error(`Invalid base64 input to toAudioFile: ${msg}`)
  }
  const buffer = new ArrayBuffer(binary.length)
  const bytes = new Uint8Array(buffer)
  for (let i = 0; i < binary.length; i++) {
    bytes[i] = binary.charCodeAt(i)
  }
  return buffer
}