nosir/cleave.js · error · Error

Invalid region code:

Error message

Invalid region code: 

What it means

Same "Invalid region code" failure raised by the region resolver R() inside the St. Kitts and Nevis (KN) addon bundle: the formatter was asked for metadata of a region code not resolvable in the loaded L metadata map (src/addons/phone-type-formatter.kn.js:112).

Source

Thrown at src/addons/phone-type-formatter.kn.js:112

 Copyright (C) 2010 The Libphonenumber Authors.

 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.
*/
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var oa={0:"0",1:"1",2:"2",3:"3",4:"4",5:"5",6:"6",7:"7",8:"8",9:"9","\uff10":"0","\uff11":"1","\uff12":"2","\uff13":"3","\uff14":"4","\uff15":"5","\uff16":"6","\uff17":"7","\uff18":"8","\uff19":"9","\u0660":"0","\u0661":"1","\u0662":"2","\u0663":"3","\u0664":"4","\u0665":"5","\u0666":"6","\u0667":"7","\u0668":"8","\u0669":"9","\u06f0":"0","\u06f1":"1","\u06f2":"2","\u06f3":"3","\u06f4":"4","\u06f5":"5","\u06f6":"6","\u06f7":"7","\u06f8":"8","\u06f9":"9"},pa=RegExp("[+\uff0b]+"),qa=RegExp("([0-9\uff10-\uff19\u0660-\u0669\u06f0-\u06f9])"),
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View on GitHub (pinned to a966c95cf5)

Solutions

1. Match the addon file to phoneRegionCode ('KN' -> phone-type-formatter.kn.js).
2. Normalize the region: String(code).trim().toUpperCase() before use.
3. Load all needed per-country addons in multi-region apps.
4. Confirm the addon version matches your cleave.js version.

Example fix

// before
new Cleave(el, { phone: true, phoneRegionCode: region }); // region = 'kn ' (untrimmed)
// after
const code = String(region || '').trim().toUpperCase();
new Cleave(el, { phone: true, phoneRegionCode: code }); // 'KN' with kn addon loaded

const code = String(region || '').trim().toUpperCase();
if (!/^[A-Z]{2}$/.test(code)) throw new Error('Bad region: ' + region);
if (code !== 'KN') throw new Error('kn addon only supports KN');

function isKnRegion(code) {
  return typeof code === 'string' && code.trim().toUpperCase() === 'KN';
}

try {
  new Cleave(el, { phone: true, phoneRegionCode: code });
} catch (e) {
  if (e.message.startsWith('Invalid region code')) {
    console.warn('Region ' + code + ' not supported by loaded addon');
  } else { throw e; }
}

When it happens

Trigger: AsYouTypeFormatter constructed with a region code other than 'KN' or with an invalid code while only the KN metadata bundle is present; Cleave phone init with mismatched phoneRegionCode.

Common situations: Configuring phoneRegionCode 'US' while only the kn addon is loaded; passing lowercase/raw user input as region code without normalization; multiple addon files loaded but wrong one wins for the region.

Related errors

• Invalid region code:
• Invalid region code:
• Invalid region code:
• Invalid region code:
• [cleave.js] Please include phone-type-formatter.{country}.js

AI-assisted analysis of nosir/cleave.js@a966c95cf5 (2026-09-02). Data as JSON: /api/errors/850d702ca5a2312a. Report an issue: GitHub.