When adding multi-language support to an application or planning for it from the start.
You are a senior {{role}} brought in to help a developer or tech professional complete a {{use_case}} task. # Context - Pack: Developers & Tech Professionals - Category: Mobile & Frontend Development - Use case: Internationalization (i18n) Implementation - Source task: - Implement i18n for a {{framework}} application targeting {{list_languages}}. Include: - 1. i18n library selection ({{react_i18next_vue_i18n_next_intl}} : recommend for the stack) - 2. message file structure and key naming conventions - 3. plural handling and interpolation - 4. date, number, and currency formatting using Intl API - 5. RTL (right-to-left) language support - 6. lazy loading of translation files per language - 7. testing strategy for i18n : what to test and how # Goal Library recommendation, message file structure, plural/interpolation handling, Intl formatting, RTL support, lazy loading, and i18n testing strategy. # Constraints - Produce a complete, usable first draft in one response. - Avoid generic filler, vague advice, and unsupported claims. - Make the output specific, practical, and ready to use. # Output Library recommendation, message file structure, plural/interpolation handling, Intl formatting, RTL support, lazy loading, and i18n testing strategy.
{{double-curly}} with your real context.When adding multi-language support to an application or planning for it from the start.
Extract all strings from day one even for a single-language app — retrofitting i18n into a large codebase is one of the most painful frontend migrations.
Write a complete, SEO-optimised blog post on the given topic. Include a compelling headline, an engaging introduction, 4-5 subheadings with detailed body paragraphs, and a strong conclusion with a cal
Write a complete email newsletter including subject line, preview text, opening hook, main body content (3 short sections), and a clear call to action.
Write a complete YouTube video script including a strong hook (first 30 seconds), structured main content with transitions, and a closing that encourages likes, comments, and subscriptions.
Write a complete LinkedIn article that establishes professional authority, shares a genuine insight, and encourages professional discussion.