fix: react hook return value (#217)

Also updates the initialization of the server

.changeset/lemon-books-wink.md

@@ -0,0 +1,5 @@
+---
+"@ledgerhq/wallet-api-server": patch
+---
+
+fix: react hook return value

packages/server/src/react.ts

@@ -25,26 +25,26 @@ export function useWalletAPIServer({
  permission: Permission;
 }) {
  const server = useRef<WalletAPIServer>();
-
- useEffect(() => {
+ // I don't really like this but it comes from the doc
+ // https://react.dev/reference/react/useRef#avoiding-recreating-the-ref-contents
+ if (server.current === undefined) {
  server.current = new WalletAPIServer(transport, config, logger);
- // eslint-disable-next-line react-hooks/exhaustive-deps
- }, []);
+ }
 
  useEffect(() => {
- server?.current?.setConfig(config);
+ server.current?.setConfig(config);
  }, [config]);
 
  useEffect(() => {
- server?.current?.setPermissions(permission);
+ server.current?.setPermissions(permission);
  }, [permission]);
 
  useEffect(() => {
- server?.current?.setCurrencies(currencies);
+ server.current?.setCurrencies(currencies);
  }, [currencies]);
 
  useEffect(() => {
- server?.current?.setAccounts(accounts);
+ server.current?.setAccounts(accounts);
  }, [accounts]);
 
  const onMessage = useCallback(
@@ -55,7 +55,7 @@ export function useWalletAPIServer({
  );
 
  return {
- server,
+ server: server.current,
  onMessage,
  };
 }