average-work.js

const Blockchain = require('./blockchain');

const blockchain = new Blockchain();

blockchain.addBlock({ data: 'initial'});

let prevTimestamp, nextTimestamp, nextBlock, timeDiff, average;

console.log('first block', blockchain.chain[blockchain.chain.length-1]);

const times = [];

for (let i=0; i < 10000; i++){
    prevTimestamp = blockchain.chain[blockchain.chain.length-1].timestamp;

    blockchain.addBlock({ data : `block ${i}`});
    nextBlock = blockchain.chain[blockchain.chain.length-1];

    nextTimestamp = nextBlock.timestamp;
    timeDiff = nextTimestamp - prevTimestamp;
    times.push(timeDiff);

    average = times.reduce((total, num) => (total + num))/times.length;
    console.log(`Time to mine : ${timeDiff}ms. Difficulty : ${nextBlock.difficulty}. Average time : ${average}ms.`);
}