DiceBag Phase 3

Dicebag.js

import seedrandom from 'seedrandom'
import {sum} from './ArrayUtils'

const rollDice = (numOfDice, numOfSides, generator = Math.random) => {
    if (numOfDice > 100000) throw new Exception("Max dice of 10000 exceeded");
    if (numOfSides > 100000) throw new Exception("Max sides of 10000 exceeded");
    let results = [];
    for (let i = 1; i<= numOfDice; i++) {
        const result = Math.floor(generator() * numOfSides) + 1;
        results.push(result);
    }
    return {
        total: sum(results),
        individualResults: results
    };
}

export const DiceBag = (generator = Math.random) => {
    return {
        d6: () => {
            return rollDice(1, 6, generator);
        },
        rollDice: (numOfDice, numOfSides) => {
            return rollDice(numOfDice, numOfSides, generator);
        },
        sum: sum
    };
}

export const DiceBagWithSeed = (seed) => {
    const generator = new seedrandom(seed);  
    let diceBag = DiceBag(generator);
    diceBag.seed = seed;
    return diceBag;
}

export default DiceBag;