Function arrayBufferToBase64

src/utils/base64.ts:1–9

(buf: ArrayBuffer)

export function arrayBufferToBase64(buf: ArrayBuffer): string {
  const bytes = new Uint8Array(buf);
  let binary = "";
  const chunkSize = 0x8000;
  for (let i = 0; i < bytes.length; i += chunkSize) {
    binary += String.fromCharCode(...bytes.subarray(i, i + chunkSize));
  }
  return btoa(binary);
}