@mui/x-date-pickers/AdapterDayjsBuddhist/AdapterDayjsBuddhist.mjs

The community edition of the MUI X Date and Time Picker components.

import _extends from "@babel/runtime/helpers/esm/extends";
/* v8 ignore start */
import dayjs from 'dayjs';
// dayjs has no exports field defined
// See https://github.com/iamkun/dayjs/issues/2562
/* eslint-disable import/extensions */
import buddhistEraPlugin from 'dayjs/plugin/buddhistEra.js';
/* v8 ignore stop */
/* eslint-enable import/extensions */
import { AdapterDayjs } from "../AdapterDayjs/index.mjs";
dayjs.extend(buddhistEraPlugin);
const BUDDHIST_YEAR_OFFSET = 543;
const buddhistTokens = {
  BB: 'year',
  BBBB: {
    sectionType: 'year',
    contentType: 'digit',
    maxLength: 4
  }
};
const buddhistFormats = {
  year: 'BBBB',
  fullDate: 'D MMM BBBB',
  keyboardDate: 'DD/MM/BBBB',
  keyboardDateTime12h: 'DD/MM/BBBB hh:mm A',
  keyboardDateTime24h: 'DD/MM/BBBB HH:mm'
};
/**
 * Adapter for dayjs with Buddhist Era calendar support.
 * Buddhist Era is used in Thailand and other Southeast Asian countries.
 * It uses the same months and days as the Gregorian calendar but with a year offset of 543.
 */
export class AdapterDayjsBuddhist extends AdapterDayjs {
  constructor({
    locale,
    formats
  } = {}) {
    super({
      locale,
      formats: _extends({}, buddhistFormats, formats)
    });
    this.lib = 'dayjs-buddhist';
    this.formatTokenMap = _extends({}, this.formatTokenMap, buddhistTokens);
  }

  /**
   * Returns the Buddhist year (Gregorian year + 543)
   */
  getYear = value => {
    return value.year() + BUDDHIST_YEAR_OFFSET;
  };

  /**
   * Sets the Buddhist year (converts to Gregorian year internally)
   */
  setYear = (value, year) => {
    return this.adjustOffset(value.set('year', year - BUDDHIST_YEAR_OFFSET));
  };

  /**
   * Parses a date string with Buddhist year support.
   * The buddhistEra plugin only supports formatting, not parsing,
   * so we convert BBBB/BB to YYYY/YY and adjust the year after parsing.
   */
  parse = (value, format) => {
    if (value === '') {
      return null;
    }

    // Check if format contains Buddhist year tokens
    const hasBuddhistYear = /BBBB|BB/.test(format);

    // dayjs can't parse BBBB/BB tokens, replace with YYYY/YY
    const parseFormat = hasBuddhistYear ? format.replace(/BBBB/g, 'YYYY').replace(/BB/g, 'YY') : format;
    const parsed = dayjs(value, parseFormat, this.locale, true);
    if (!parsed.isValid() || !hasBuddhistYear) {
      return parsed;
    }

    // Convert Buddhist year input to Gregorian
    return parsed.subtract(BUDDHIST_YEAR_OFFSET, 'year');
  };
}