mnth/web/index.js

Framework-agnostic base block to build calendars, datepickers, etc by rendering 2d array of Dates

import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

import { addDays } from './add-days';
import { setDate } from './set-date';
var DAYS_IN_WEEK = 7;
export var getCalendarMonth = function getCalendarMonth(date, options) {
  var _firstDayOfWeek$optio = _objectSpread({
    firstDayOfWeek: 1
  }, options),
      firstDayOfWeek = _firstDayOfWeek$optio.firstDayOfWeek;

  var firstDateOfMonth = new Date(date.getFullYear(), date.getMonth(), 1);
  var lastDateOfMonth = new Date(date.getFullYear(), date.getMonth() + 1, 0);
  var firstWeekdayOfMonth = firstDateOfMonth.getDay();
  var lastWeekdayOfMonth = lastDateOfMonth.getDay();
  var daysInMonth = lastDateOfMonth.getDate();
  var daysToPrepend = (firstWeekdayOfMonth - firstDayOfWeek + DAYS_IN_WEEK) % DAYS_IN_WEEK;
  var daysToAppend = (DAYS_IN_WEEK - 1 - lastWeekdayOfMonth + firstDayOfWeek) % DAYS_IN_WEEK;
  var month = [];
  var week = [];

  for (var i = 1 - daysToPrepend; i <= daysInMonth + daysToAppend + 1; i++) {
    if (i <= 0) {
      week.push(addDays(firstDateOfMonth, i - 1));
    } else if (i > daysInMonth) {
      week.push(addDays(lastDateOfMonth, i - daysInMonth));
    } else {
      week.push(setDate(date, i));
    }

    if (week.length === 7) {
      month.push(week);
      week = [];
    }
  }

  return month;
};
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