How to use the substring function from base-64

socketcluster.js

GitHub: Hri7566/scripts

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  base64 += base64Chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
  base64 += base64Chars[bytes[i + 2] & 63];
}

if ((len % 3) === 2) {
  base64 = base64.substring(0, base64.length - 1) + '=';
} else if (len % 3 === 1) {
  base64 = base64.substring(0, base64.length - 2) + '==';
}

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+ 7 other calls in file