vcard4/src/parameters/CalscaleParameter.js

An RFC 6350 compliant JavaScript library for generating and parsing version 4.0 vCards. Can also generate RFC 6351 compliant XML vCards and RFC 7095 compliant jCards. TypeScript type declarations are provided.

import { BaseParameter } from "./BaseParameter.js";
import { MissingArgument, InvalidArgument } from "../errors/index.js";

export class CalscaleParameter extends BaseParameter {
  static param = "CALSCALE";
  static identifier = "CalscaleParameter";

  #calscaleValue;
  #calscaleRegExp = /^(?:gregorian|[Xx]-[A-Za-z0-9-]+)$/;

  get value() {
    return this.#calscaleValue.repr();
  }

  get valueXML() {
    return this.#calscaleValue.reprXML();
  }

  get valueJSON() {
    return this.#calscaleValue.reprJSON();
  }

  #validate(calscaleValue) {
    if (typeof calscaleValue === "undefined")
      throw new MissingArgument("Value for CalscaleParameter must be supplied");
    else if (calscaleValue.constructor.identifier !== "ParameterValueType")
      throw new MissingArgument(
        "Value for CalscaleParameter must of type ParameterValueType"
      );
    else if (!this.#calscaleRegExp.test(calscaleValue.repr()))
      throw new InvalidArgument("Invalid calscale value");
  }

  constructor(calscaleValue) {
    super();

    this.#validate(calscaleValue);
    this.#calscaleValue = calscaleValue;

    this.checkAbstractPropertiesAndMethods();
    Object.freeze(this);
  }
}

Object.freeze(CalscaleParameter);