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The base-x npm package is designed for encoding and decoding of non-standard base representations. It is commonly used for converting between binary data and a variety of alphanumeric representations using different base encodings, such as base58 used in Bitcoin addresses.
Encoding binary data to a specified base
This feature allows you to encode binary data (like a Buffer) into a string representation using a custom base alphabet. The example shows encoding 'Hello World' to a base58 string.
"const baseX = require('base-x');\nconst BASE58 = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz';\nconst bs58 = baseX(BASE58);\nconst encoded = bs58.encode(Buffer.from('Hello World'));\nconsole.log(encoded); // Prints encoded string in base58"
Decoding a base-encoded string to binary data
This feature allows you to decode a string that was encoded in a custom base back into binary data. The example demonstrates decoding a base58 string back to its original binary form.
"const baseX = require('base-x');\nconst BASE58 = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz';\nconst bs58 = baseX(BASE58);\nconst decoded = bs58.decode('JxF12TrwUP45BMd');\nconsole.log(decoded); // Prints Buffer containing the original binary data"
The base58 npm package is specifically tailored for base58 encoding and decoding, similar to one of the use cases of base-x. However, base-x is more flexible as it supports custom bases, whereas base58 is fixed to the base58 alphabet.
bs58 is another package that provides similar functionality to base-x but is specifically for base58 encoding and decoding. It is less flexible than base-x because it does not allow for custom alphabets.
multibase is a package that supports multiple base encodings and is part of the multiformats family. It is more comprehensive than base-x as it supports a variety of bases out of the box and follows the multibase specification.
var bs58 = require('base-x')('123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz')
var decoded = bs58.decode('5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr')
console.log(decoded)
// => <Buffer 80 ed db dc 11 68 f1 da ea db d3 e4 4c 1e 3f 8f 5a 28 4c 20 29 f7 8a d2 6a f9 85 83 a4 99 de 5b 19>
console.log(bs58.encode(decoded))
// => 5Kd3NBUAdUnhyzenEwVLy9pBKxSwXvE9FMPyR4UKZvpe6E3AgLr
This library is free and open-source software released under the MIT license.
FAQs
Fast base encoding / decoding of any given alphabet
The npm package base-x receives a total of 2,035,692 weekly downloads. As such, base-x popularity was classified as popular.
We found that base-x demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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