diff --git a/src/@types/i18next.d.ts b/src/@types/i18next.d.ts
index 6dcfda0f358..3bd71bc6c61 100644
--- a/src/@types/i18next.d.ts
+++ b/src/@types/i18next.d.ts
@@ -1,102 +1,8 @@
-import "i18next";
+import { TOptions } from "i18next";
 
+// Module declared to make referencing keys in the localization files type-safe.
 declare module "i18next" {
-  interface CustomTypeOptions {
-    defaultNS: "menu";
-    namespaces: [
-      "ability",
-      "abilityTriggers",
-      "arenaFlyout",
-      "arenaTag",
-      "battle",
-      "battleScene",
-      "battleInfo",
-      "battleMessageUiHandler",
-      "battlePokemonForm",
-      "battlerTags",
-      "berry",
-      "bgmName",
-      "biome",
-      "challenges",
-      "commandUiHandler",
-      "common",
-      "achv",
-      "dialogue",
-      "battleSpecDialogue",
-      "miscDialogue",
-      "doubleBattleDialogue",
-      "egg",
-      "fightUiHandler",
-      "filterBar",
-      "gameMode",
-      "gameStatsUiHandler",
-      "growth",
-      "menu",
-      "menuUiHandler",
-      "modifier",
-      "modifierType",
-      "move",
-      "nature",
-      "pokeball",
-      "pokemon",
-      "pokemonForm",
-      "pokemonInfo",
-      "pokemonInfoContainer",
-      "pokemonSummary",
-      "saveSlotSelectUiHandler",
-      "settings",
-      "splashMessages",
-      "starterSelectUiHandler",
-      "statusEffect",
-      "terrain",
-      "titles",
-      "trainerClasses",
-      "trainerNames",
-      "tutorial",
-      "voucher",
-      "weather",
-      "partyUiHandler",
-      "modifierSelectUiHandler",
-      "moveTriggers",
-      "runHistory",
-      "mysteryEncounters/mysteriousChallengers",
-      "mysteryEncounters/mysteriousChest",
-      "mysteryEncounters/darkDeal",
-      "mysteryEncounters/fightOrFlight",
-      "mysteryEncounters/slumberingSnorlax",
-      "mysteryEncounters/trainingSession",
-      "mysteryEncounters/departmentStoreSale",
-      "mysteryEncounters/shadyVitaminDealer",
-      "mysteryEncounters/fieldTrip",
-      "mysteryEncounters/safariZone",
-      "mysteryEncounters/lostAtSea",
-      "mysteryEncounters/fieryFallout",
-      "mysteryEncounters/theStrongStuff",
-      "mysteryEncounters/thePokemonSalesman",
-      "mysteryEncounters/anOfferYouCantRefuse",
-      "mysteryEncounters/delibirdy",
-      "mysteryEncounters/absoluteAvarice",
-      "mysteryEncounters/aTrainersTest",
-      "mysteryEncounters/trashToTreasure",
-      "mysteryEncounters/berriesAbound",
-      "mysteryEncounters/clowningAround",
-      "mysteryEncounters/partTimer",
-      "mysteryEncounters/dancingLessons",
-      "mysteryEncounters/weirdDream",
-      "mysteryEncounters/theWinstrateChallenge",
-      "mysteryEncounters/teleportingHijinks",
-      "mysteryEncounters/bugTypeSuperfan",
-      "mysteryEncounters/funAndGames",
-      "mysteryEncounters/uncommonBreed",
-      "mysteryEncounters/globalTradeSystem",
-      "mysteryEncounters/theExpertPokemonBreeder",
-      "mysteryEncounterMessages"
-    ];
-    // Extend the translation keys with your specific keys
-    resources: {
-      [key: string]: {
-        [key: string]: string;
-      };
-    };
+  interface TFunction {
+    (key: string | string[], options?: TOptions & Record<string, unknown>): string;
   }
 }