@marekzelinka/streak-counter - a basic streak counter

This is a basic streak counter - inspired by Duolingo - written in TypeScript and meant for the browser (uses localStorage).

Install

npm install @marekzelinka/streak-counter

Usage

import { streakCounter } from '@marekzelinka/streak-counter'

const today = new Date()
const streak = streakCounter(localStorage, today)
// streak returns an object:
// {
//    currentCount: 1,
//    lastLoginDate: "11/11/2021",
//    startDate: "11/11/2021",
// }