URL

const Base64Alphabet URL = {
	.encoding = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_",
	.reverse =
	x`ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
	  ffffffffffffffffffffffffff3effff3435363738393a3b3c3dffffffffffff
	  ff000102030405060708090a0b0c0d0e0f10111213141516171819ffffffff3f
	  ff1a1b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233ffffffffff
	  ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
	  ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
	  ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
	  ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff`
};