i18next Internationalization Skill

i18next is a JavaScript internationalization framework that provides a complete solution for localizing products across web, mobile, and desktop platforms. It goes beyond standard i18n features with support for plurals, context, interpolation, formatting, namespaces, and a rich plugin ecosystem.

When to read reference files

This skill is organized with reference files for deeper topics. Read the relevant reference file before writing code:

references/configuration.md — Read when setting up i18next init, configuring languages, namespaces, fallbacks, missing keys, or loading translations. Also read for backend plugins, language detection, and resource loading strategies.
references/translation-functions.md — Read when using t() function features: interpolation, plurals, context, formatting (number, currency, datetime, relative time, list), nesting, objects/arrays, or any translation string patterns.
references/typescript.md — Read when setting up type-safe translations, creating declaration files, configuring CustomTypeOptions, using the selector API (enableSelector), or troubleshooting TypeScript issues.
references/patterns-and-plugins.md — Read when implementing best practices, common patterns (namespace organization, key naming, fallback strategies), creating custom plugins, or migrating between i18next versions.