Advanced

Storage Adapters

Storage adapters persist the user's locale choice across page loads. LocalStorage, URL, and cookie adapters are the stable convenience paths; database, hybrid, and IndexedDB helpers remain experimental.

import { createLocalStorageAdapter } from '@pico-intl-dev/core/storage';

createI18n({
  base: 'en',
  locale: 'auto',
  messages,
  storage: createLocalStorageAdapter('app-locale'),
});

Key points

• LocalStorage, URL, and cookie adapters are the stable convenience paths.
• Database, hybrid, and IndexedDB helpers are experimental.
• Storage should match your deployment and privacy model.

Next step

Copy the example into a small fixture, run the validation commands, and keep framework-specific routing, hydration, or SSR behavior covered by your app tests.