chaos/scripts/utils.js

'use strict';

const colors = [
    '#F44336',
    '#2196F3',
    '#4CAF50',
    '#F9A825',
    '#E91E63',
    '#00838F'
].map(color =>  color.match(/[A-F0-9]{2}/g).map(
    component => parseInt(component, 16)
));

/**
 * Get a random whole number
 *
 * @param {number} min Minimal value for the number
 * @param {number} max Maximal value for the number (excluded)
 * @return {number} Random number
 */
export const getRandomNumber = (min, max) =>
	Math.floor(Math.random() * (max - min)) + min;

/**
 * Get a color at given index. For any given
 * index, the same color will always be returned
 *
 * @param {number} index Color index
 * @return {Array} RGB components
 */
export const getColor = index => colors[index % colors.length];