overleaf/services/web/frontend/js/i18n.js

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import i18n from 'i18next'
import { initReactI18next } from 'react-i18next'
import getMeta from '@/utils/meta'
const LANG = getMeta('ol-i18n').currentLangCode
// Since we are rendering React from Angular, the initialisation is
// synchronous on page load (but hidden behind the loading screen). This
// means that translations must be initialised without any actual
// translation strings, and load those manually ourselves later
i18n.use(initReactI18next).init({
lng: LANG,
// still using the v3 plural suffixes
compatibilityJSON: 'v3',
react: {
// Since we are manually waiting on the translations data to
// load, we don't need to use Suspense
useSuspense: false,
// Trigger a re-render when a language is added. Since we load the
// translation strings asynchronously, we need to trigger a re-render once
// they've loaded
bindI18nStore: 'added',
// Disable automatic conversion of basic markup to React components
transSupportBasicHtmlNodes: false,
},
interpolation: {
// We use the legacy v1 JSON format, so configure interpolator to use
// underscores instead of curly braces
prefix: '__',
suffix: '__',
unescapeSuffix: 'HTML',
// Disable nesting in interpolated values, preventing user input
// injection via another nested value
skipOnVariables: true,
// Do not escape values, as `t` + React will already escape them
// (`escapeValue: true` and `shouldUnescape` must be set on each use of `Trans`)
escapeValue: false,
defaultVariables: {
appName: getMeta('ol-ExposedSettings').appName,
},
},
})
// The webpackChunkName here will name this chunk (and thus the requested
// script) according to the file name. See https://webpack.js.org/api/module-methods/#magic-comments
// for details
const localesPromise = import(
/* webpackChunkName: "[request]" */ `../../locales/${LANG}.json`
).then(lang => {
i18n.addResourceBundle(LANG, 'translation', lang)
})
export default localesPromise