Function fromBase64Url

src/utils/urlCameraStateCodec.ts:20–36

(str: string)

 * Convert Base64URL string to Uint8Array.
 */
export function fromBase64Url(str: string): Uint8Array | null {
  try {
    let base64 = str.replace(/-/g, '+').replace(/_/g, '/');
    while (base64.length % 4 !== 0) {
      base64 += '=';
    }

    const binary = atob(base64);
    const bytes = new Uint8Array(binary.length);
    for (let i = 0; i < binary.length; i++) {
      bytes[i] = binary.charCodeAt(i);
    }
    return bytes;
  } catch {
    return null;
  }
}

/**
 * Encode camera state to binary (72 bytes: 9 Float64 values).