authentik/web/src/interfaces/locale.ts

import { en, fr } from "make-plural/plurals";

import { i18n } from "@lingui/core";
import { detect, fromUrl, fromStorage, fromNavigator } from "@lingui/detect-locale";

import { messages as localeEN } from "../locales/en";
import { messages as localeFR_FR } from "../locales/fr_FR";
import { messages as localeDEBUG } from "../locales/pseudo-LOCALE";

i18n.loadLocaleData("en", { plurals: en });
i18n.loadLocaleData("debug", { plurals: en });
i18n.loadLocaleData("fr_FR", { plurals: fr });
i18n.load("en", localeEN);
i18n.load("fr_FR", localeFR_FR);
i18n.load("debug", localeDEBUG);

const DEFAULT_FALLBACK = () => "en";

const result = detect(fromUrl("lang"), fromStorage("lang"), fromNavigator(), DEFAULT_FALLBACK);
i18n.activate(result || DEFAULT_FALLBACK());