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+'use strict';
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+// base-x encoding / decoding
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+// based on https://github.com/cryptocoinjs/base-x 3.0.7
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+// modification: removed Buffer dependency and node.modules entry
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+// Copyright (c) 2018 base-x contributors
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+// Copyright (c) 2014-2018 The Bitcoin Core developers (base58.cpp)
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+// Distributed under the MIT software license, see the accompanying
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+// file LICENSE or http://www.opensource.org/licenses/mit-license.php.
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+
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+(function(){
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+this.baseX = function base (ALPHABET) {
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+ if (ALPHABET.length >= 255) { throw new TypeError('Alphabet too long') }
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+ var BASE_MAP = new Uint8Array(256)
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+ BASE_MAP.fill(255)
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+ for (var i = 0; i < ALPHABET.length; i++) {
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+ var x = ALPHABET.charAt(i)
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+ var xc = x.charCodeAt(0)
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+ if (BASE_MAP[xc] !== 255) { throw new TypeError(x + ' is ambiguous') }
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+ BASE_MAP[xc] = i
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+ }
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+ var BASE = ALPHABET.length
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+ var LEADER = ALPHABET.charAt(0)
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+ var FACTOR = Math.log(BASE) / Math.log(256) // log(BASE) / log(256), rounded up
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+ var iFACTOR = Math.log(256) / Math.log(BASE) // log(256) / log(BASE), rounded up
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+ function encode (source) {
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+ if (source.length === 0) { return '' }
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+ // Skip & count leading zeroes.
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+ var zeroes = 0
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+ var length = 0
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+ var pbegin = 0
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+ var pend = source.length
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+ while (pbegin !== pend && source[pbegin] === 0) {
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+ pbegin++
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+ zeroes++
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+ }
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+ // Allocate enough space in big-endian base58 representation.
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+ var size = ((pend - pbegin) * iFACTOR + 1) >>> 0
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+ var b58 = new Uint8Array(size)
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+ // Process the bytes.
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+ while (pbegin !== pend) {
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+ var carry = source[pbegin]
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+ // Apply "b58 = b58 * 256 + ch".
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+ var i = 0
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+ for (var it1 = size - 1; (carry !== 0 || i < length) && (it1 !== -1); it1--, i++) {
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+ carry += (256 * b58[it1]) >>> 0
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+ b58[it1] = (carry % BASE) >>> 0
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+ carry = (carry / BASE) >>> 0
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+ }
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+ if (carry !== 0) { throw new Error('Non-zero carry') }
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+ length = i
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+ pbegin++
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+ }
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+ // Skip leading zeroes in base58 result.
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+ var it2 = size - length
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+ while (it2 !== size && b58[it2] === 0) {
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+ it2++
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+ }
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+ // Translate the result into a string.
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+ var str = LEADER.repeat(zeroes)
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+ for (; it2 < size; ++it2) { str += ALPHABET.charAt(b58[it2]) }
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+ return str
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+ }
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+ function decodeUnsafe (source) {
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+ if (typeof source !== 'string') { throw new TypeError('Expected String') }
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+ if (source.length === 0) { return '' }
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+ var psz = 0
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+ // Skip leading spaces.
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+ if (source[psz] === ' ') { return }
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+ // Skip and count leading '1's.
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+ var zeroes = 0
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+ var length = 0
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+ while (source[psz] === LEADER) {
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+ zeroes++
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+ psz++
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+ }
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+ // Allocate enough space in big-endian base256 representation.
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+ var size = (((source.length - psz) * FACTOR) + 1) >>> 0 // log(58) / log(256), rounded up.
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+ var b256 = new Uint8Array(size)
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+ // Process the characters.
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+ while (source[psz]) {
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+ // Decode character
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+ var carry = BASE_MAP[source.charCodeAt(psz)]
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+ // Invalid character
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+ if (carry === 255) { return }
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+ var i = 0
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+ for (var it3 = size - 1; (carry !== 0 || i < length) && (it3 !== -1); it3--, i++) {
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+ carry += (BASE * b256[it3]) >>> 0
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+ b256[it3] = (carry % 256) >>> 0
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+ carry = (carry / 256) >>> 0
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+ }
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+ if (carry !== 0) { throw new Error('Non-zero carry') }
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+ length = i
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+ psz++
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+ }
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+ // Skip trailing spaces.
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+ if (source[psz] === ' ') { return }
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+ // Skip leading zeroes in b256.
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+ var it4 = size - length
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+ while (it4 !== size && b256[it4] === 0) {
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+ it4++
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+ }
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+ var vch = []
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+ var j = zeroes
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+ while (it4 !== size) {
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+ vch[j++] = b256[it4++]
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+ }
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+ return vch
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+ }
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+ function decode (string) {
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+ var buffer = decodeUnsafe(string)
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+ if (buffer) { return buffer }
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+ throw new Error('Non-base' + BASE + ' character')
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+ }
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+ return {
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+ encode: encode,
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+ decodeUnsafe: decodeUnsafe,
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+ decode: decode
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+ }
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+}
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+}).call(this);
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El RIDO