Function t

apps/app/src/i18n/index.ts:166–192

(
  key: string,
  paramsOrLocale?: TranslationParams | Language,
  legacyParams?: Record<string, string | number>,
)

type TranslationParams = Record<string, string | number> & { lng?: Language };

export const t = (
  key: string,
  paramsOrLocale?: TranslationParams | Language,
  legacyParams?: Record<string, string | number>,
): string => {
  const params = legacyParams ?? (typeof paramsOrLocale === "string" ? undefined : paramsOrLocale);
  const loc: Language = typeof paramsOrLocale === "string"
    ? paramsOrLocale
    : isLanguage(params?.lng)
      ? params.lng
      : locale();

  const lookupKey =
    typeof params?.count === "number" ? resolvePluralKey(loc, key, params.count) : key;

  const result = lookupEntry(loc, lookupKey);
  if (result === null) return key;

  if (!params) return result;

  let out = result;
  for (const [k, v] of Object.entries(params)) {
    if (k === "lng") continue;
    out = out.replace(`{${k}}`, String(v));
  }
  return out;
};

/**
 * Initialize locale from localStorage