base62-ts

Custom Base-62 Encoder in TypeScript

Usage no npm install needed!

<script type="module">
  import base62Ts from 'https://cdn.skypack.dev/base62-ts';
</script>

README

base62-ts

Custom Base-62 Encoder

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This repository contains the version of my encoder/decoder for Base-62 in two languages:

Motivation

I needed an efficient way to apply a Base-62 encoding/decoding algorithm working the same way in TypeScript/Javascript and in Golang environments.

Usage

Both versions use the same following dictionary:

Value Character Value Character Value Character Value Character Value Character
0 0 13 d 26 q 39 D 52 Q
1 1 14 e 27 r 40 E 53 R
2 2 15 f 28 s 41 F 54 S
3 3 16 g 29 t 42 G 55 T
4 4 17 h 30 u 43 H 56 U
5 5 18 i 31 v 44 I 57 V
6 6 19 j 32 w 45 J 58 W
7 7 20 k 33 x 46 K 59 X
8 8 21 l 34 y 47 L 60 Y
9 9 22 m 35 z 48 M 61 Z
10 a 23 n 36 A 49 N
11 b 24 o 37 B 50 O
12 c 25 p 38 C 51 P

In other words, they use the following base: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.

npm i base62-ts
import * as base62 from 'base62-ts'

const value = 18969

const encoded = base62.encode(value)

// 4VX
console.log(encoded)

const decoded = base62.decode(encoded)

console.assert(value === decoded)

Dependencies

base62-ts depends on my general utility library for computing euclidean division: ts-utls.

Besides, to run the tests, you would need to install live-server:

npm i -g live-server

License

Both versions are available under an MIT license (see LICENSE).


© 2021-2022 Cyril Dever. All rights reserved