@thi.ng/base-n/chars/58.js

Arbitrary base-n conversions w/ presets for base8/16/32/36/58/62/64/83/85, support for bigints and encoding/decoding of byte arrays

const D = "123456789";
const U = "ABCDEFGHJKLMNPQRSTUVWXYZ";
const L = "abcdefghijkmnopqrstuvwxyz";
const B58_CHARS_UC = D + U + L;
const B58_CHARS_LC = D + L + U;
const B58_CHARS = B58_CHARS_UC;
export {
  B58_CHARS,
  B58_CHARS_LC,
  B58_CHARS_UC
};