2758. Next Day 🔒 

Description

Write code that enhances all date objects such that you can call the date.nextDay() method on any date object and it will return the next day in the format YYYY-MM-DD as a string.

Example 1:

Input: date = "2014-06-20"
Output: "2014-06-21"
Explanation: 
const date = new Date("2014-06-20");
date.nextDay(); // "2014-06-21"

Example 2:

Input: date = "2017-10-31"
Output: "2017-11-01"
Explanation: The day after 2017-10-31 is 2017-11-01.

Constraints:

new Date(date) is a valid date object

Solutions

Solution 1

TypeScript

declare global {
    interface Date {
        nextDay(): string;
    }
}

Date.prototype.nextDay = function () {
    const date = new Date(this.valueOf());
    date.setDate(date.getDate() + 1);
    return date.toISOString().slice(0, 10);
};

/**
 * const date = new Date("2014-06-20");
 * date.nextDay(); // "2014-06-21"
 */