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[ci skip]

jest.i18n.js

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+import i18n from "i18next";
+import { initReactI18next, setI18n } from "react-i18next";
+import rawTranslationEN from "./public/locales/en/common.json";
+import i18nConfig from "./next-i18next.config.js";
+
+const translationEN = {
+  common: rawTranslationEN,
+};
+
+// Set up formatter service
+i18n.services = i18n.services || {};
+i18n.services.formatter = {
+  add: (name, fn) => {
+    i18n.formatters = i18n.formatters || {};
+    i18n.formatters[name] = fn;
+  },
+  format: (value, format, lng, options) => {
+    return i18n.formatters?.[format]?.(value, lng, options) ?? value;
+  },
+};
+
+// Register custom formatters
+i18nConfig.use[0].init(i18n);
+
+// Initialize i18n
+i18n.use(initReactI18next).init({
+  lng: "en",
+  fallbackLng: "en",
+  debug: false,
+  initImmediate: false, // make sure init is synchronous in tests
+  interpolation: {
+    escapeValue: false,
+    format: (value, format, lng, options) => i18n.services.formatter.format(value, format, lng, options),
+  },
+  resources: {
+    en: translationEN,
+  },
+  ns: ["common"],
+  defaultNS: "common",
+  returnNull: false,
+});
+
+setI18n(i18n);
+
+export default i18n;