Suppress eslint explicit any warnings required for the advanced type trickery to work.

At the call site the types are correct, it is just the type signatures that require any.

frontend/src/hooks/i18n.ts

@@ -6,8 +6,8 @@ type MessageType = typeof messages;
 type MessageKeys = keyof MessageType;
 
 type MessageParams<T extends MessageKeys> = MessageType[T]["en"] extends (
-  ...args: any
-) => any
+  ...args: any // eslint-disable-line @typescript-eslint/no-explicit-any
+) => any // eslint-disable-line @typescript-eslint/no-explicit-any
   ? Parameters<MessageType[T]["en"]>
   : [];
 
@@ -19,7 +19,7 @@ export function useI18n() {
     ...args: MessageParams<T>
   ): string {
     const message = messages[key][lang] ?? messages[key]["en"];
-    // @ts-ignore
+    // @ts-expect-error see https://stackoverflow.com/a/75086839
     return typeof message === "function" ? message(...args) : message;
   };
 }

frontend/src/lib/messages.ts

@@ -19,5 +19,5 @@ export const messages = {
   },
 } as const satisfies Record<
   string,
-  AllLanguages<string | ((...args: any) => string)>
+  AllLanguages<string> | AllLanguages<(...args: any) => string> // eslint-disable-line @typescript-eslint/no-explicit-any
 >;