@intlayer/i18next: Compat Adapter for i18next

For a detailed step-by-step tutorial, please see our full i18next Migration Guide.

Intlayer perfectly replicates the core runtime characteristics of i18next. By utilizing the compat package, your Vanilla applications or internal modules can continue to leverage familiar syntax.

What to do

To begin, initialize Intlayer in your project:

npx intlayer init --interactive

If you are using Vite, include the Intlayer plugin to route imports to @intlayer/i18next:

import { defineConfig } from "vite";
import { i18nextVitePlugin } from "@intlayer/i18next/plugin";

export default defineConfig({
  plugins: [i18nextVitePlugin()],
});

What it does under the hood

The i18nextVitePlugin aliases i18next imports to @intlayer/i18next, avoiding bundle bloat from JSON file inclusions.

Under the hood:

• Instance configuration: createInstance correctly parses and applies namespace fallbacks while leveraging Intlayer's compilation pipeline for dictionary retrieval.
• Interpolation: Native support for {{name}} replacements and $t(key) nesting recursively.
• Context & Plurals: Identifies and resolves suffix formats like key_male and key_one/key_other evaluating against standard Intl.PluralRules.
• Return objects: The returnObjects: true mode safely extracts trees from Intlayer dictionaries.

To understand where these libraries come from, read the history of JavaScript i18n.