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int2t05int2t05/engineering-skills/skills/04-develop/i18n/SKILL.md

i18n

Skill3 starsChanged 28 days agoMITView on GitHub

Implement or audit localization for supported product locales. Triggers on "i18n", "国际化".

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The file

Files
SKILL.md

Internationalization (i18n)

When to use

  • Implement or audit localization for supported product locales.

Not for: frontend-design for general layout.

Steps

  1. Identify actual locales, tooling, translation ownership and affected surfaces.
  2. Extract messages and use locale-aware pluralization, dates, numbers and routing in the actual rendering model.
  3. Handle expansion, fonts, accessibility and fallbacks; add or test RTL only when relevant to supported locales.
  4. Exercise translations, missing messages, locale persistence and relevant server/client boundaries.

Verify

  • Supported messages and formatting are correct; routing and layout evidence covers actual locale requirements.

References

  • engineering-principles.md — shared decision boundaries, scope and verification.
  • references/i18n-checklist.md — locale-surface audit template, ICU syntax reference, RTL conversion checklist, locale-detection patterns, test-locale matrix
  • references/server-i18n.md — RSC / App Router message loading, per-locale bundle splitting, request-scoped locale, hydration alignment

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