binary2letter

This lightweight, zero-dependency 😎 JavaScript library converts a string to letters.

For example, 101011 is converted to h.

Please note that it does not strictly follow the ASCII table.

Letter sequence

const LETTERS = [
  '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
  'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
  'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
  '-', '_',
];

So, 000000 in base 2 is 0 in decimal, hexadecimal. Hence, binary2letter('000000') returns LETTERS[0] which is 0.

Another example is 001111 which in base 2 is 15 in decimal, f in hexadecimal. Hence, binary2letter('001111') returns LETTERS[15] which is F

Installation

 npm install thammarith/binary2letter

Usage

I don't know why would you want to use this but if you wish to, you can use import like

import { binary2letter } from 'binary2letter';

Use binary2letter(string) where you need. It returns string, e.g.,

let encoded = binary2letter('001111');
console.log(encoded); // F

Caveat

If the input is not six letters long, it will add zeros at the end, for instance 111 becomes 111000. So either make sure that you add 0s as its prefix or accept the consequence.

Test

Don't know. Can't write test. Still learning about it.

Why would I want to use this?

I don't know either. I just need this for my personal project so... 🤷‍♂️.