@orlenka/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

yarn add @orlenka/streak-counter

Usage

import {streakCounter} from '@orlenka/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"
// }