nosir/cleave.js · error · Error

Invalid region code:

Error message

Invalid region code:

What it means

Same libphonenumber metadata failure, for the Latvian addon (phone-type-formatter.lv.js). Function R resolves the formatter's region by looking the code up in metadata map L; if the region is missing or empty it throws Error('Invalid region code: ' + c). The empty code in the message indicates the formatter was invoked without a valid 'LV' region argument.

Source

Thrown at src/addons/phone-type-formatter.lv.js:63

 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.
*/
function M(){this.a={}}M.b=function(){return M.a?M.a:M.a=new M};
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])"),
ra=/^\(?\$1\)?$/;function N(a){return 0==a.length||ra.test(a)}function O(a,c){if(null==c)return null;c=c.toUpperCase();var b=a.a[c];if(null==b){b=L[c];if(null==b)return null;b=(new J).a(E.j(),b);a.a[c]=b}return b}function P(a){a=K[a];return null==a?"ZZ":a[0]};function Q(a){this.H=RegExp("\u2008");this.C="";this.m=new n;this.w="";this.i=new n;this.u=new n;this.l=!0;this.A=this.o=this.F=!1;this.G=M.b();this.s=0;this.b=new n;this.B=!1;this.h="";this.a=new n;this.f=[];this.D=a;this.J=this.g=R(this,this.D)}var S=new E;r(S,11,"NA");
var sa=/\[([^\[\]])*\]/g,ua=/\d(?=[^,}][^,}])/g,va=RegExp("^[-x\u2010-\u2015\u2212\u30fc\uff0d-\uff0f \u00a0\u00ad\u200b\u2060\u3000()\uff08\uff09\uff3b\uff3d.\\[\\]/~\u2053\u223c\uff5e]*(\\$\\d[-x\u2010-\u2015\u2212\u30fc\uff0d-\uff0f \u00a0\u00ad\u200b\u2060\u3000()\uff08\uff09\uff3b\uff3d.\\[\\]/~\u2053\u223c\uff5e]*)+$"),T=/[- ]/;
function R(a,c){var b;if(null!=c&&isNaN(c)&&c.toUpperCase()in L){b=O(a.G,c);if(null==b)throw Error("Invalid region code: "+c);b=x(b,10)}else b=0;b=O(a.G,P(b));return null!=b?b:S}
function U(a){for(var c=a.f.length,b=0;b<c;++b){var d=a.f[b],f=x(d,1);if(a.w==f)return!1;var e;e=a;var g=d,k=x(g,1);if(-1!=k.indexOf("|"))e=!1;else{k=k.replace(sa,"\\d");k=k.replace(ua,"\\d");p(e.m);var m;m=e;var g=x(g,2),t="999999999999999".match(k)[0];t.length<m.a.b.length?m="":(m=t.replace(new RegExp(k,"g"),g),m=m.replace(RegExp("9","g"),"\u2008"));0<m.length?(e.m.a(m),e=!0):e=!1}if(e)return a.w=f,a.B=T.test(w(d,4)),a.s=0,!0}return a.l=!1}
function V(a,c){for(var b=[],d=c.length-3,f=a.f.length,e=0;e<f;++e){var g=a.f[e];0==y(g,3)?b.push(a.f[e]):(g=w(g,3,Math.min(d,y(g,3)-1)),0==c.search(g)&&b.push(a.f[e]))}a.f=b}Q.prototype.K=function(){this.C="";p(this.i);p(this.u);p(this.m);this.s=0;this.w="";p(this.b);this.h="";p(this.a);this.l=!0;this.A=this.o=this.F=!1;this.f=[];this.B=!1;this.g!=this.J&&(this.g=R(this,this.D))};Q.prototype.L=function(a){return this.C=wa(this,a)};
function wa(a,c){a.i.a(c);var b=c;if(qa.test(b)||1==a.i.b.length&&pa.test(b)){var b=c,d;"+"==b?(d=b,a.u.a(b)):(d=oa[b],a.u.a(d),a.a.a(d));c=d}else a.l=!1,a.F=!0;if(!a.l){if(!a.F)if(W(a)){if(X(a))return xa(a)}else if(0<a.h.length&&(b=a.a.toString(),p(a.a),a.a.a(a.h),a.a.a(b),b=a.b.toString(),d=b.lastIndexOf(a.h),p(a.b),a.b.a(b.substring(0,d))),a.h!=ya(a))return a.b.a(" "),xa(a);return a.i.toString()}switch(a.u.b.length){case 0:case 1:case 2:return a.i.toString();case 3:if(W(a))a.A=!0;else return a.h=
ya(a),Y(a);default:if(a.A)return X(a)&&(a.A=!1),a.b.toString()+a.a.toString();if(0<a.f.length){b=za(a,c);d=Aa(a);if(0<d.length)return d;V(a,a.a.toString());return U(a)?Ba(a):a.l?Z(a,b):a.i.toString()}return Y(a)}}function xa(a){a.l=!0;a.A=!1;a.f=[];a.s=0;p(a.m);a.w="";return Y(a)}function Aa(a){for(var c=a.a.toString(),b=a.f.length,d=0;d<b;++d){var f=a.f[d],e=x(f,1);if((new RegExp("^(?:"+e+")$")).test(c))return a.B=T.test(w(f,4)),c=c.replace(new RegExp(e,"g"),w(f,2)),Z(a,c)}return""}
function Z(a,c){var b=a.b.b.length;return a.B&&0<b&&" "!=a.b.toString().charAt(b-1)?a.b+" "+c:a.b+c}function Y(a){var c=a.a.toString();if(3<=c.length){for(var b=a.o&&0==a.h.length&&0<y(a.g,20)?v(a.g,20)||[]:v(a.g,19)||[],d=b.length,f=0;f<d;++f){var e=b[f];0<a.h.length&&N(x(e,4))&&!w(e,6)&&null==e.a[5]||(0!=a.h.length||a.o||N(x(e,4))||w(e,6))&&va.test(x(e,2))&&a.f.push(e)}V(a,c);c=Aa(a);return 0<c.length?c:U(a)?Ba(a):a.i.toString()}return Z(a,c)}
function Ba(a){var c=a.a.toString(),b=c.length;if(0<b){for(var d="",f=0;f<b;f++)d=za(a,c.charAt(f));return a.l?Z(a,d):a.i.toString()}return a.b.toString()}
function ya(a){var c=a.a.toString(),b=0,d;1!=w(a.g,10)?d=!1:(d=a.a.toString(),d="1"==d.charAt(0)&&"0"!=d.charAt(1)&&"1"!=d.charAt(1));d?(b=1,a.b.a("1").a(" "),a.o=!0):null!=a.g.a[15]&&(d=new RegExp("^(?:"+w(a.g,15)+")"),d=c.match(d),null!=d&&null!=d[0]&&0<d[0].length&&(a.o=!0,b=d[0].length,a.b.a(c.substring(0,b))));p(a.a);a.a.a(c.substring(b));return c.substring(0,b)}
function W(a){var c=a.u.toString(),b=new RegExp("^(?:\\+|"+w(a.g,11)+")"),b=c.match(b);return null!=b&&null!=b[0]&&0<b[0].length?(a.o=!0,b=b[0].length,p(a.a),a.a.a(c.substring(b)),p(a.b),a.b.a(c.substring(0,b)),"+"!=c.charAt(0)&&a.b.a(" "),!0):!1}
function X(a){if(0==a.a.b.length)return!1;var c=new n,b;a:{b=a.a.toString();if(0!=b.length&&"0"!=b.charAt(0))for(var d,f=b.length,e=1;3>=e&&e<=f;++e)if(d=parseInt(b.substring(0,e),10),d in K){c.a(b.substring(e));b=d;break a}b=0}if(0==b)return!1;p(a.a);a.a.a(c.toString());c=P(b);"001"==c?a.g=O(a.G,""+b):c!=a.D&&(a.g=R(a,c));a.b.a(""+b).a(" ");a.h="";return!0}
function za(a,c){var b=a.m.toString();if(0<=b.substring(a.s).search(a.H)){var d=b.search(a.H),b=b.replace(a.H,c);p(a.m);a.m.a(b);a.s=d;return b.substring(0,a.s+1)}1==a.f.length&&(a.l=!1);a.w="";return a.i.toString()};h("Cleave.AsYouTypeFormatter",Q);h("Cleave.AsYouTypeFormatter.prototype.inputDigit",Q.prototype.L);h("Cleave.AsYouTypeFormatter.prototype.clear",Q.prototype.K);}.call((typeof global==="object"&&global)?global:window);

View on GitHub (pinned to a966c95cf5)

Solutions

  1. Pass 'LV' explicitly as the region/default-country when calling the formatter.
  2. Guard the input: require a non-empty uppercase 2-letter region before invoking the formatter.
  3. Default empty regions to a sane fallback (e.g. 'LV') or reject the request with a clear validation message.
  4. Parse numbers with a default country instead of auto-detection so the resolver never sees an empty region.
  5. Regenerate/update the lv addon bundle so its metadata map includes LV.

Example fix

// before
const formatted = formatter(number, { country: userCountry }); // userCountry = '' 
// after
const region = (userCountry || 'LV').toUpperCase();
const formatted = formatter(number, { country: region });
Defensive patterns

Strategy: validation

Validate before calling

function isValidRegion(r) {
  return typeof r === 'string' && /^[A-Z]{2}$/.test(r.toUpperCase()) && r.trim() !== '';
}
if (!isValidRegion(region)) {
  throw new TypeError(`phone-type-formatter: expected ISO region code, got ${JSON.stringify(region)}`);
}

Type guard

function isRegionCode(v) {
  return typeof v === 'string' && /^[A-Za-z]{2}$/.test(v);
}

Try / catch

let formatted;
try {
  formatted = formatter(number, { country: 'LV' });
} catch (e) {
  if (/Invalid region code/.test(e.message)) {
    formatted = null;
  } else {
    throw e;
  }
}

Prevention

When it happens

Trigger: Invoking the bundle-exported formatter (b) with an empty/undefined region; constructing the AsYouType formatter whose constructor runs R(this, this.D) with D unset; passing a country string that is not in the bundled metadata so O returns null and R throws.

Common situations: defaultCountry read from an unset config/environment value; user-supplied country codes that are empty after trimming/lowercasing; addon file used standalone without the region wiring; metadata/version mismatch after upgrading the generated per-country bundle.

Related errors

AI-assisted analysis of nosir/cleave.js@a966c95cf5 (2026-09-02). Data as JSON: /api/errors/fa821573d168ad5d. Report an issue: GitHub.