index.js

/**
 * Check if date is possible
 * 
 * Example: 
 * 30/02/2020 // not possible
 * 20/02/2020 // is possible   
 *    
 *       
 * @param int day
 * @param int month
 * @param int year
 * @return string
 */
function isPossibleDate(day, month, year) {

    let date = new Date(year, month, 0);
    let numberDay = date.getDate();

    if (day > numberDay) {
        day = day - numberDay;
        month += 1;
    }

    if (month > 12) {
        month = 1
        year += 1
    }


    return day + "/" + month + "/" + year;
}
// Example:
//console.log(isPossibleDate((30+5), 12, 2020));
//output: 4/1/2021



module.exports = {
    /**
     * Generate of Date
     *
     * @param { int } day
     * @param { int } month
     * @param { int } year
     * @param { int } looping
     * @return { array }
     */
    generateDate: function (day, month, year, looping) {
        let arrDate = [];
    
        for (i = looping; i > 0 && i <= looping; i -= 1) {
            month++
            if (month > 12) {
                month = 1
                year += 1
            }
    
            arrDate.push(isPossibleDate(day, month, year))
        }
        return arrDate
    },
    // Example:
    //console.log(generateDate(30, 12, 2020, 2));
    //output: Array [ "30/1/2021", "2/3/2021"]



    /**
     * Generate of parcel
     *
     * @param { array } arrDate
     * @param { string } valueParcel
     * @return { array }
     */
    generateParcel: function (arrDate, valueParcel) {
        let parcel = []
    
        for (let i = 0; i < arrDate.length; i++) {
            parcel.push({
                index: i,
                value: valueParcel,
                date: arrDate[i],
                status: 'Em aberto'
            })
        }
        return parcel
    },
    // Example:
    // let arrDate = generateDate(30, 12, 2020, 1)
    // let parcel  = generateParcel(arrDate, "20,59");
    // output: Array [ Object { indice: 0, data: "20,59", data: "30/1/2021", status: "Em aberto" } ]
}