Cowrie

Cowrie is a JavaScript utility that allows you to add, subtract, multiply, divide, sort & partition monetary values

Installation

Cowrie requires Node.js v10+ to run.

$ npm install --save @cowrie/cowrie

Usage

Cowrie can be used both in a Node.js environment (server-side) or in a browser environment (client-side). After the installation with npm, add it to your source files using either of the following:

1. ES6 import statement

import Cowrie from "@cowrie/cowrie";

2. Commonjs require statement

const Cowrie = require('@cowrie/cowrie');

The following are methods available in the Cowrie object, which also amount to its features. These are some a few things to note when using the utility.

The results of the plus(), minus(), times(), and divide methods is another Cowrie instance. The allocate() method however, returns an array of Cowrie instances. Use the figure property to retrieve a string representation of the monetary value figure, without the currency.

For addition (+) and subtraction (−), the numbers are assumbed to be of the same currency instantiated.

The allocate() method takes a array of numbers that represent a ratio, with 100% as a whole.

Features

+ Addition

const a = new Cowrie('KES', 0).plus(2).figure;
const b = new Cowrie('KES', 0).plus(0.1, 0.2).figure;
const c = new Cowrie('KES', 0).plus(...[1.1, 1.1, 1.1, 4]).figure;

console.log({a, b, c});

− Subtraction

const a = new Cowrie('KES', 0).minus(2).figure;
const b = new Cowrie('KES', 0).minus(0.1, 0.2).figure;
const c = new Cowrie('KES', 0).minus(...[1.1, 1.1, 1.1, 4]).figure;

console.log({a, b, c});

× Multiplication

const a = new Cowrie('KES', 2090.5).times(8.61).figure;
const b = new Cowrie('KES', 2090.5, 3).times(8.61).figure;
const c = new Cowrie('KES', 209050).times(8.61).figure;

console.log({a, b, c});

÷ Division

const a = new Cowrie('KES', 1.21).divide(0.1).figure;
const b = new Cowrie('KES', 0.2).divide(0.1).figure;
const c = new Cowrie('KES', 0.2).divide(3).figure;
const d = new Cowrie('KES', 0.3).divide(3).figure;

console.log({a, b, c, d});

a : b : c Allocation

const a = new Cowrie('KES', 500).allocate([3, 2]).map(x => x.figure);
const b = new Cowrie('KES', 500).allocate([1, 1, 1]).map(x => x.figure);
const c = new Cowrie('KES', 500).allocate([0, 1, 1]).map(x => x.figure);

console.log({a, b, c, d});

Comma separators

const a = new Cowrie('KES', 0, 0, true);
const b = new Cowrie('KES', 0.123456, 6,true );

const c = new Cowrie('KES', 100, 0, true );
const d = new Cowrie('KES', 100.123456, 6,true );

const e = new Cowrie('KES', 1000, 0,true );
const f = new Cowrie('KES', 1000.123456, 6, true );

const g = new Cowrie('KES', 10000, 0,true );
const h = new Cowrie('KES', 10000.123456, 6,true );

const i = new Cowrie('KES', 100000, 0,true );
const j = new Cowrie('KES', 100000.123456, 6,true );

const k = new Cowrie('KES', 1000000, 0, true );
const l = new Cowrie('KES', 1000000.123456, 6,true );

const m = new Cowrie('KES', 10000000, 0,true);
const n = new Cowrie('KES', 10000000.123456, 6,true );

console.log({a, b, c, d, e, f, g, h, i, j, k, l, m, n})

License

MIT