/Wiki/sources/honojs__hono/2026/https-hono-dev-llms-full-txt-language-code-trans-77babd78ee6b-language-code-transformation-s0207-c0000.md

Language Code Transformation - hono-docs

Language Code Transformation Source evidence: /Sources/raw/honojs hono/honojs hono.md Canonical citation: https://hono.dev/llms full.txt language code transf...

Language Code Transformation

Source evidence: /Sources/raw/honojshono/honojshono.md Canonical citation: https://hono.dev/llms-full.txt#language-code-transformation

Summary

Normalize complex codes (e.g., en-US → en): ts app.use( languageDetector({ convertDetectedLanguage: (lang) => lang.split('-')[0], supportedLanguages: ['en', 'ja'], fallbackLanguage: 'en', }) )

Content

Normalize complex codes (e.g., en-US → en):

app.use(
  languageDetector({
    convertDetectedLanguage: (lang) => lang.split('-')[0],
    supportedLanguages: ['en', 'ja'],
    fallbackLanguage: 'en',
  })
)
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