Upgrade eslint-plugin-matrix-org to 1.2.1

This upgrade came with a number of new lints that needed to be fixed across the code base. Primarily: explicit return types on functions, and explicit visibility modifiers on class members.

src/auth/useInteractiveLogin.ts

@@ -21,8 +21,12 @@ import { createClient, MatrixClient } from "matrix-js-sdk/src/matrix";
 import { initClient } from "../matrix-utils";
 import { Session } from "../ClientContext";
 
-export const useInteractiveLogin = () =>
-  useCallback<
+export function useInteractiveLogin(): (
+  homeserver: string,
+  username: string,
+  password: string
+) => Promise<[MatrixClient, Session]> {
+  return useCallback<
     (
       homeserver: string,
       username: string,
@@ -41,8 +45,8 @@ export const useInteractiveLogin = () =>
           },
           password,
         }),
-      stateUpdated: (...args) => {},
-      requestEmailToken: (...args): Promise<{ sid: string }> => {
+      stateUpdated: (): void => {},
+      requestEmailToken: (): Promise<{ sid: string }> => {
         return Promise.resolve({ sid: "" });
       },
     });
@@ -69,6 +73,6 @@ export const useInteractiveLogin = () =>
       false
     );
     /* eslint-enable camelcase */
-
     return [client, session];
   }, []);
+}