Localization Library

The Localization library provides a convenient way to handle localization in your application, supporting multiple languages and plural forms. It allows you to easily retrieve localized strings and customize them based on provided parameters.

Installation

You can install the Localization library via npm:

npm install @infomaximum/localization

Usage

Importing the Library

import { Localization, ELanguages } from "@infomaximum/localization";

Initializing Localization

To start using the Localization library, you need to create an instance of the Localization class:

const localization = new Localization({ language: ELanguages.en });

You can specify the default language during initialization. If not provided, it will default to the language detected from the user's browser settings.

Getting the Current Language

You can retrieve the current language set in the Localization instance:

const currentLanguage = localization.getLanguage();
console.log("Current Language:", currentLanguage); // Output: "en" (for English)

Retrieving Localized Strings

To retrieve a localized string, use the getLocalized method:

const localizedString = localization.getLocalized({
  en: "Hello, World!",
  ru: "Привет, мир!",
});
console.log(localizedString); // Output: "Hello, World!"

You can also pass additional parameters to customize the localized string:

const localizedString = localization.getLocalized(
  {
    en: (name) => `Hello, ${name}!`,
    ru: (name) => `Привет, ${name}!`,
  },
  { templateData: "John" }
);
console.log(localizedString); // Output: "Hello, John!"

Plural Forms

The library supports plural forms for different languages. You can provide singular and plural forms for each language:

const localizedString = localization.getLocalized(
  {
    en: { s: "1 item", p1: "%s items" },
    ru: { s: "1 предмет", p1: "%s предмета", p2: "%s предметов" },
  },
  { count: 5 }
);
console.log(localizedString); // Output: "5 items" (in English)

Capitalization

You can specify whether the localized string should be capitalized:

const localizedString = localization.getLocalized(
  {
    en: "hello, world!",
    ru: "привет, мир!",
  },
  { capitalized: true }
);
console.log(localizedString); // Output: "Hello, World!"

Browser Language Detection

By default, the library detects the user's browser language to set the initial language. You can also explicitly set the language during initialization.

Supported Languages

The library supports the following languages:

• English (en)
• Russian (ru)

License

This library is released under the Apache License 2.0. See the LICENSE file for details.