nip24client/lib/krs.js

NIP24 Client for JavaScript

/**
 * Copyright 2015-2025 NETCAT (www.netcat.pl)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @author NETCAT <firma@netcat.pl>
 * @copyright 2015-2025 NETCAT (www.netcat.pl)
 * @license http://www.apache.org/licenses/LICENSE-2.0
 */


'use strict';

/**
 * Normalizes form of the KRS number
 * @param {string} krs input string
 * @return {string} normalized number
 */
function normalize(krs)
{
	if (!krs) {
		return undefined;
	}

	krs = krs.trim();

	if (krs.length < 10) {
		krs = ('0000000000' + krs).slice(-10);
	}

	if (krs.search(/^[0-9]{10}$/) === -1) {
		return undefined;
	}

	return krs;
}

/**
 * Checks if specified KRS is valid
 * @param {string} krs input number
 * @return {boolean} true if number is valid
 */
function isValid(krs)
{
	if (!normalize(krs)) {
		return false;
	}

	return true;
}

module.exports = {
	normalize: normalize,
	isValid: isValid
};