react-day-picker/dist/cjs/helpers/getInitialMonth.js

Customizable Date Picker for React

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getInitialMonth = getInitialMonth;
/**
 * Determines the initial month to display in the calendar based on the provided
 * props.
 *
 * This function calculates the starting month, considering constraints such as
 * `startMonth`, `endMonth`, and the number of months to display.
 *
 * @param props The DayPicker props, including navigation and date constraints.
 * @param dateLib The date library to use for date manipulation.
 * @returns The initial month to display.
 */
function getInitialMonth(props, dateLib) {
    const { month, defaultMonth, today = dateLib.today(), numberOfMonths = 1, endMonth, startMonth } = props;
    let initialMonth = month || defaultMonth || today;
    const { differenceInCalendarMonths, addMonths, startOfMonth } = dateLib;
    // Adjust the initial month if it is after the endMonth
    if (endMonth && differenceInCalendarMonths(endMonth, initialMonth) < 0) {
        const offset = -1 * (numberOfMonths - 1);
        initialMonth = addMonths(endMonth, offset);
    }
    // Adjust the initial month if it is before the startMonth
    if (startMonth && differenceInCalendarMonths(initialMonth, startMonth) < 0) {
        initialMonth = startMonth;
    }
    return startOfMonth(initialMonth);
}
//# sourceMappingURL=getInitialMonth.js.map