Introduction to y18n

y18n is a powerful JavaScript library that facilitates the localization and internationalization of applications. It provides a robust set of APIs for managing translations, ensuring that your application can easily adapt to different languages and regional preferences.

Getting Started with y18n

To install y18n, use the following npm command:

  npm install y18n

Once installed, you can start using y18n in your project to manage translations.

API Examples

Creating a y18n Instance

  
    const Y18N = require('y18n');
    const y18n = Y18N({
      locale: 'en',
      directory: './locales'
    });
  

Setting and Getting Locale

  
    // Set locale
    y18n.setLocale('es');

    // Get locale
    const currentLocale = y18n.getLocale();
    console.log(currentLocale); // Outputs: 'es'
  

Translating Strings

  
    // Add translations
    y18n.updateLocale({
      hello: 'Hola'
    });

    // Translate string
    const greeting = y18n.__('hello');
    console.log(greeting); // Outputs: 'Hola'
  

Plurals

  
    // Add plural translations
    y18n.updateLocale({
      apple: {
        one: 'Manzana',
        other: 'Manzanas'
      }
    });

    // Translate plural forms
    const singular = y18n.__n('apple', 1);
    const plural = y18n.__n('apple', 2);
    console.log(singular); // Outputs: 'Manzana'
    console.log(plural); // Outputs: 'Manzanas'
  

Updating Translations

  
    // Update translations
    y18n.updateLocale({
      welcome: 'Bienvenido'
    });

    const welcomeMessage = y18n.__('welcome');
    console.log(welcomeMessage); // Outputs: 'Bienvenido'
  

Application Example

Let’s create a simple application that demonstrates the use of y18n APIs.

  
    const express = require('express');
    const Y18N = require('y18n');

    const app = express();
    const y18n = Y18N({ locale: 'en', directory: './locales' });

    // Set up some translations
    y18n.updateLocale({
      hello: 'Hello',
      goodbye: 'Goodbye'
    });

    app.get('/hello', (req, res) => {
      res.send(y18n.__('hello'));
    });

    app.get('/goodbye', (req, res) => {
      res.send(y18n.__('goodbye'));
    });

    app.listen(3000, () => {
      console.log('App listening on port 3000');
    });
  

This example sets up an Express server with two endpoints that return translated messages based on the configured locale.

Conclusion

y18n is a versatile library that makes localization and internationalization straightforward for JavaScript applications. With its comprehensive API, you can effortlessly manage translations and adapt your application to different languages. Explore y18n today and enhance the global reach of your application.

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