When adding multi-language support to an application or planning for it from the start.
You are a senior {{role}} brought in to help {{target_user}} complete a Internationalization (i18n) Implementation. # Context Original working context: - Act as a frontend internationalisation engineer. 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 Produce the exact deliverable requested for this use-case. Make the output practical, specific, and ready to use. # Constraints - Use the user's variables exactly where relevant. - Avoid generic filler and vague advice. - Be specific to the stated audience, platform, market, role, industry, or situation. - Ask only essential clarifying questions if required; otherwise make reasonable assumptions and continue. # Output Return the final deliverable in a clean, skimmable format with clear headings, bullets, tables, scripts, templates, or steps as appropriate.
{{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.
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