Brightly decorate your GitHub Graph

import jsonfile from 'jsonfile';
import moment from 'moment';
import simpleGit from 'simple-git';
import random from 'random';

const path = './data.json';

function isValidDate(date) {
  const startDate = moment('2019-01-01');
  const endDate = moment('2024-12-13');
  return date.isBetween(startDate, endDate, null, '[]');
}

async function markCommit(date) {
  const data = { date: date.toISOString() };
  await jsonfile.writeFile(path, data);

  const git = simpleGit();
  await git.add([path]);
  await git.commit(date.toISOString(), { '-d': date.toISOString() });
}

async function makeCommits(n) {
  const git = simpleGit();

  for (let i = 0; i < n; i++) {
    const randomDays = random.int(0, 6);
    const randomWeeks = random.int(0, 54 * 4);

    const randomDate = moment('2019-01-01')
      .add(randomDays, 'days')
      .add(randomWeeks, 'weeks');

    if (isValidDate(randomDate)) {
      console.log(`Creating commit: ${randomDate.toISOString()}`);
      await markCommit(randomDate);
    } else {
      console.log(`Invalid date: ${randomDate.toISOString()}, skipping...`);
    }
  }

  console.log('Pushing all commits...');
  await git.push();
}

makeCommits(50000);