react-day-picker
Version:
Customizable Date Picker for React
94 lines • 3.09 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.addToRange = addToRange;
const DateLib_js_1 = require("../classes/DateLib.js");
/**
* Add a day to an existing range.
*
* The returned range takes in account the `undefined` values and if the added
* day is already present in the range.
*
* @group Utilities
*/
function addToRange(
/** The date to add to the range. */
date,
/** The range where to add `date`. */
initialRange, min = 0, max = 0, required = false,
/** @ignore */
dateLib = DateLib_js_1.defaultDateLib) {
const { from, to } = initialRange || {};
const { isSameDay, isAfter, isBefore } = dateLib;
let range;
if (!from && !to) {
// the range is empty, add the date
range = { from: date, to: min > 0 ? undefined : date };
}
else if (from && !to) {
// adding date to an incomplete range
if (isSameDay(from, date)) {
// adding a date equal to the start of the range
if (required) {
range = { from, to: undefined };
}
else {
range = undefined;
}
}
else if (isBefore(date, from)) {
// adding a date before the start of the range
range = { from: date, to: from };
}
else {
// adding a date after the start of the range
range = { from, to: date };
}
}
else if (from && to) {
// adding date to a complete range
if (isSameDay(from, date) && isSameDay(to, date)) {
// adding a date that is equal to both start and end of the range
if (required) {
range = { from, to };
}
else {
range = undefined;
}
}
else if (isSameDay(from, date)) {
// adding a date equal to the the start of the range
range = { from, to: min > 0 ? undefined : date };
}
else if (isSameDay(to, date)) {
// adding a dare equal to the end of the range
range = { from: date, to: min > 0 ? undefined : date };
}
else if (isBefore(date, from)) {
// adding a date before the start of the range
range = { from: date, to: to };
}
else if (isAfter(date, from)) {
// adding a date after the start of the range
range = { from, to: date };
}
else if (isAfter(date, to)) {
// adding a date after the end of the range
range = { from, to: date };
}
else {
throw new Error("Invalid range");
}
}
// check for min / max
if (range?.from && range?.to) {
const diff = dateLib.differenceInCalendarDays(range.to, range.from);
if (max > 0 && diff > max) {
range = { from: date, to: undefined };
}
else if (min > 1 && diff < min) {
range = { from: date, to: undefined };
}
}
return range;
}
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