@nlpjs-neo/language

Part of NLP.js Neo, a refreshed and maintained fork of axa-group/nlp.js. The packages are ESM only, written in TypeScript, and require Node.js 22.12 or later.

Introduction

@nlpjs-neo/language guesses the language of a text from its trigrams, over the full trigram database. Use @nlpjs-neo/language-min when you want the same API with a much smaller dataset.

Installation

pnpm add @nlpjs-neo/language

Example of use

import { Language } from '@nlpjs-neo/language';

const language = new Language();

console.log(language.guess('When the night has come And the land is dark')[0]);
// { alpha3: 'eng', alpha2: 'en', language: 'English', score: 1 }

console.log(language.guessBest('Quan arriba la nit i la terra es fosca'));
// { alpha3: 'cat', alpha2: 'ca', language: 'Catalan', score: 1 }

guess(text, allowList, limit) returns every candidate ordered by descending score; guessBest(text, allowList) returns only the first one. allowList restricts the answer to a set of locales.

The full documentation is at Language guesser.

Contributing

You can read the guide of how to contribute at Contributing.

Code of Conduct

You can read the Code of Conduct at Code of Conduct.

Who is behind it

NLP.js was created and developed by AXA Group Operations Spain S.A., with Jesus Seijas as its main author; AXA Group is no longer involved in maintaining it. nlpjs-neo is a fork of that project, currently maintained by Igor Savin and the contributors to the fork.

License

Copyright (c) AXA Group Operations Spain S.A.

Copyright (c) 2026 Igor Savin

Released under the MIT License.