Choosing a language in the picker now applies it at once. The choice is stored and ?lang is kept in step through replaceState, and the picker keeps focus. Code that writes translated text itself re-presents it on a switch: onLocaleChange() lets an owner listen, removed at teardown, and status writers hand over a function of the locale (voice cards, scene director, SDR, draw hints, imagery split, map sources, Bhote Koshi media) so the words are rebuilt rather than re-sent. The HUD, cockpit, radio, CCTV, launch, awareness and credit texts follow the same hook, and applyDocumentTranslations can be applied again without undoing text code wrote since. The unsaved-work registry and persistLocaleAndReload existed only to guard the reload, so they go, with their catalog entries.
4.6 KiB
Translating God's Eye View
Shipped languages: English (source and fallback), German (de), Spanish (es), French (fr), Italian (it), Japanese (ja), Brazilian Portuguese (pt), Russian (ru), Ukrainian (uk), Simplified Chinese (zh-CN) and Traditional Chinese (zh-Hant).
How it works
The English text is the key: code calls t('Save keys'), and markup marks elements with data-i18n. How developers mark text is in I18N.md.
Every other language is one flat JSON file, src/i18n/locales/<code>.json, keyed by the English text:
{
"Save keys": "Сохранить ключи",
"{count} cameras": {
"one": "{count} камера",
"few": "{count} камеры",
"many": "{count} камер",
"other": "{count} камеры"
}
}
A tn() entry is keyed by the English plural form and holds one string per Intl.PluralRules category of that language. A missing entry falls back to English.
The page picks its language from ?lang=, then the choice stored by the language picker (the globe button in the bottom-right corner), then the browser languages, then English. ?lang= is not stored, and copied share links leave it out. Switching applies at once, without a reload.
The check
npm run i18n # what is missing, unused or broken, per language
npm run i18n -- --missing ru # missing ru entries as JSON, ready to translate
npm run i18n -- --prune # drop entries the code no longer uses
npm test runs the same check. It fails on a missing, empty or unused entry, on placeholders that differ from the English, on a missing plural form, and on text or plural forms still in English. The --missing template fails until every entry is translated. If an entry is right in English (a code such as CRT, a product name), add it under your language code in src/i18n/same-as-english.json.
Changing English text changes its key: the old translation becomes unused and the new text shows as missing. Translate it and prune.
Fixing a translation
Edit src/i18n/locales/<code>.json and run npm run i18n. To see your change, open the app with ?lang=<code>.
Adding a language
- Create
src/i18n/locales/<code>.json, fill it fromnpm run i18n -- --missing <code>(start from{}), and translate every entry. - Import it in
src/i18n/index.jsand add it toCATALOGS. - Add the code to
LOCALESand its own-language name toLOCALE_NAMESinsrc/i18n/locale.js. Right-to-left languages also go inRTL_LOCALES. - Add
src/i18n/locales/<code>.jsonnext toru.jsoninscripts/package-boundaries.json. - Write
docs/translations/<code>.md: glossary, plural forms, units and style (copy the structure ofru.md). - Run
npm run i18nandnpm test, then check the panels in the app at narrow widths.
Rules
- Keep every
{placeholder}name exactly as in the English: do not rename, drop or add one. Its position inside the sentence follows the grammar of your language, e.g."{accepted} of {raw} records accepted"→"принято записей: {accepted} из {raw}". - UPPERCASE English stays UPPERCASE. Short labels, chips and HUD readouts should stay short; prefer an abbreviation over a wrapped line.
- Keep the separators
·,—,→,↗,…. - Leave product, provider and data names in their original form: Google Maps, Cesium ion, OpenAI, ChatGPT, NASA FIRMS, USGS, OpenSky, ADS-B, AIS, CCTV, HUD, TomTom, OpenStreetMap, Mapillary, and keyboard keys (Space, Esc, H, 1–9).
- Units follow the language's convention; see the language notes.
Never translated
These are contracts, not copy: layer ids and registry keys, status enums and other machine values (translate only the label shown for them), share-link and hash parameters, ?lang=, storage schemas, API fields, voice tool names and schemas, provider and dataset names, data from feeds (callsigns, vessel, satellite, station and place names, headlines), attribution, console diagnostics, and user-authored content.
Language notes
Each language keeps its glossary, plural forms, units and style in its own file, docs/translations/<code>.md: German, Spanish, French, Italian, Japanese, Brazilian Portuguese, Russian, Ukrainian, Simplified Chinese, Traditional Chinese. Read it before translating, and add a term there when you settle on one.