@nuintun/qrcode/cjs/encoder/utils/asserts.cjs

A pure JavaScript QRCode encode and decode library.

/**
 * @module QRCode
 * @package @nuintun/qrcode
 * @license MIT
 * @version 5.0.2
 * @author nuintun <nuintun@qq.com>
 * @description A pure JavaScript QRCode encode and decode library.
 * @see https://github.com/nuintun/qrcode#readme
 */

'use strict';

const Charset = require('../../common/Charset.cjs');

/**
 * @module asserts
 */
function assertContent(content) {
  if (content === '') {
    throw new Error('segment content should be at least 1 character');
  }
}
function assertCharset(charset) {
  if (!(charset instanceof Charset.Charset)) {
    throw new Error('illegal charset');
  }
}
function assertHints(hints) {
  const { fnc1 } = hints;
  // FNC1.
  if (fnc1 != null) {
    const [mode] = fnc1;
    if (mode !== 'GS1' && mode !== 'AIM') {
      throw new Error('illegal fn1 hint');
    }
    if (mode === 'AIM') {
      const [, indicator] = fnc1;
      if (indicator < 0 || indicator > 0xff || !Number.isInteger(indicator)) {
        throw new Error('illegal fn1 application indicator');
      }
    }
  }
}
function assertLevel(level) {
  if (['L', 'M', 'Q', 'H'].indexOf(level) < 0) {
    throw new Error('illegal error correction level');
  }
}
function assertVersion(version) {
  if (version !== 'Auto') {
    if (version < 1 || version > 40 || !Number.isInteger(version)) {
      throw new Error('illegal version');
    }
  }
}

exports.assertCharset = assertCharset;
exports.assertContent = assertContent;
exports.assertHints = assertHints;
exports.assertLevel = assertLevel;
exports.assertVersion = assertVersion;