Hex Class

In the Hex.ts file, create a class called Hex for Hexadecimal numbers. It should initialize with a decimal number as an argument.

Adding a Hex object to a number generates a number (by using .valueOf()), but calling .toString() or .toJSON() will show its hexadecimal value starting with "0x".

Example:

const FF = new Hex(255);
FF.toString() === "0xFF";
FF.valueOf() + 1 === 256;

Also create two methods, .plus() and .minus(), which will add or subtract a number or Hex object and return a new Hex object.

const a = new Hex(10);
const b = new Hex(5);
a.plus(b).toJSON() === "0xF";

Also, create a .parse() class method that can parse Hexadecimal numbers and convert them to standard decimal numbers:

Hex.parse("0xFF") === 255;
Hex.parse("FF") === 255;

Setup

• Run npm install to install dependencies
• Run npm test to run tests once
• Run npm run test:watch to run tests in watch mode