makemesenior.js

(function makeMeSeniorDev() {
	const els = document.getElementsByClassName('ContributionCalendar-day');
	const levels = [1, 2, 3, 4];

	for (i = 0; i < els.length; i++) {
		const level = levels[Math.floor(Math.random() * levels.length)];
		els[i].setAttribute('data-level', level)
	}

	el = document.querySelector('.js-yearly-contributions > .position-relative > .text-normal');

	el.innerHTML = "100,000 contributions in the last year" 
})();