devextreme/esm/__internal/scheduler/utils/skipped_days.js

JavaScript/TypeScript Component Suite for Responsive Web Development

/**
 * DevExtreme (esm/__internal/scheduler/utils/skipped_days.js)
 * Version: 26.1.3
 * Build date: Wed Jun 10 2026
 *
 * Copyright (c) 2012 - 2026 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
export const isValidWeekday = value => "number" === typeof value && Number.isInteger(value) && value >= 0 && value <= 6;
export const isDateSkipped = (date, skippedDays) => skippedDays.includes(date.getDay());
export const getVisibleDaysOfWeek = (firstDayOfWeek, skippedDays) => {
    const result = [];
    for (let count = 0; count < 7; count += 1) {
        const raw = firstDayOfWeek + count;
        const dayOfWeek = (raw % 7 + 7) % 7;
        if (!skippedDays.includes(dayOfWeek)) {
            result.push(dayOfWeek)
        }
    }
    return result
};
export const getFirstVisibleDate = (start, skippedDays, nextDate) => {
    if (skippedDays.length >= 7) {
        return new Date(start)
    }
    let date = new Date(start);
    while (isDateSkipped(date, skippedDays)) {
        date = nextDate(date)
    }
    return date
};
export const getSkippedDaysCount = (start, dayCount, skippedDays) => {
    if (dayCount <= 0 || !skippedDays || 0 === skippedDays.length) {
        return 0
    }
    const date = new Date(start);
    let skippedCount = 0;
    for (let i = 0; i < dayCount; i += 1) {
        if (isDateSkipped(date, skippedDays)) {
            skippedCount += 1
        }
        date.setDate(date.getDate() + 1)
    }
    return skippedCount
};