RustyNail

function getMonthDays(year, month) {
    let firstDay = new Date(year, month, 1)
    let lastDay = new Date(year, month + 1, 0)
    var rawDays = []
    for (var i = 1; ; i++) {
        var tempDay = new Date(year, month, i)
        if (tempDay.getTime() < lastDay.getTime()) {
            rawDays.push(tempDay)
        } else {
            break
        }
    }

    var tempDay = new Date(firstDay.getFullYear(), firstDay.getMonth(), firstDay.getDate() - 1)
    while (tempDay.getDay() != 0) {
        rawDays.unshift(tempDay)
        tempDay = new Date(tempDay.getFullYear(), tempDay.getMonth(), tempDay.getDate() - 1)
    }
    rawDays.unshift(tempDay)

    tempDay = new Date(lastDay.getFullYear(), lastDay.getMonth(), lastDay.getDate())
    while (tempDay.getDay() != 6) {
        rawDays.push(tempDay)
        tempDay = new Date(tempDay.getFullYear(), tempDay.getMonth(), tempDay.getDate() + 1)
    }
    rawDays.push(tempDay)
    var acturalDays = []
    for (var i = 0; i < rawDays.length;) {
        var t = 0;
        var tempWeek = []
        while (t < 7 && rawDays.length > i) {
            if (rawDays.length > i) {
                tempWeek.push(rawDays[i++])
            }
            t++
        }
        acturalDays.push(tempWeek)
    }

    var result = []
    for (var week of acturalDays) {
        var temp = []
        for (var day of week) {
            temp.push({
                date: day,
                type: day.getTime() < firstDay.getTime() ? "pre" : day.getTime() > lastDay.getTime() ? "suf" : "cur",
                stamp: day.getTime() / 1000
            })
        }
        result.push(temp)
    }
    return result
}