Remove double-up-drr (memo vs rpc) (#1541)

* Remove inner memo (no double-up on stringify)

* Validators-specific query

packages/api-derive/src/balances/all.ts

@@ -81,7 +81,7 @@ export const all = memo((api: ApiInterfaceRx): (address: AccountIndex | AccountI
   const bestNumberCall = bestNumber(api);
   const infoCall = info(api);
 
-  return memo((address: AccountIndex | AccountId | Address | string): Observable<DerivedBalances> =>
+  return (address: AccountIndex | AccountId | Address | string): Observable<DerivedBalances> =>
     infoCall(address).pipe(
       switchMap(({ accountId }): Observable<Result> =>
         (accountId
@@ -101,5 +101,5 @@ export const all = memo((api: ApiInterfaceRx): (address: AccountIndex | AccountI
       ),
       map(calcBalances),
       drr()
-    ));
+    );
 }, true);

packages/api-derive/src/balances/fees.ts

@@ -56,7 +56,7 @@ export const fees = memo((api: ApiInterfaceRx): () => Observable<DerivedFees> =>
     ? queryV2
     : queryV1;
 
-  return memo((): Observable<DerivedFees> =>
+  return (): Observable<DerivedFees> =>
     query(api).pipe(
       map(([creationFee, existentialDeposit, transferFee, transactionBaseFee, transactionByteFee]): DerivedFees => ({
         creationFee,
@@ -66,5 +66,5 @@ export const fees = memo((api: ApiInterfaceRx): () => Observable<DerivedFees> =>
         transferFee
       })),
       drr()
-    ));
+    );
 }, true);

packages/api-derive/src/balances/votingBalances.ts

@@ -12,12 +12,12 @@ import { drr, memo } from '../util';
 import { all } from './all';
 
 export const votingBalances = memo((api: ApiInterfaceRx): (addresses?: (AccountId | AccountIndex | Address | string)[]) => Observable<DerivedBalances[]> => {
-  return memo((addresses?: (AccountId | AccountIndex | Address | string)[]): Observable<DerivedBalances[]> =>
+  return (addresses?: (AccountId | AccountIndex | Address | string)[]): Observable<DerivedBalances[]> =>
     (
       !addresses || !addresses.length
         ? of([] as DerivedBalances[])
         : combineLatest(addresses.map(all(api)))
     ).pipe(
       drr()
-    ));
+    );
 }, true);

packages/api-derive/src/balances/votingBalancesNominatorsFor.ts

@@ -17,7 +17,7 @@ import { votingBalances } from './votingBalances';
 export const votingBalancesNominatorsFor = memo((api: ApiInterfaceRx): (address: AccountId | AccountIndex | Address | string) => Observable<DerivedBalances[]> => {
   const infoCall = info(api);
 
-  return memo((address: AccountId | AccountIndex | Address | string): Observable<DerivedBalances[]> =>
+  return (address: AccountId | AccountIndex | Address | string): Observable<DerivedBalances[]> =>
     infoCall(address).pipe(
       switchMap(({ accountId }): Observable<AccountId[]> =>
         accountId
@@ -26,5 +26,5 @@ export const votingBalancesNominatorsFor = memo((api: ApiInterfaceRx): (address:
       ),
       switchMap(votingBalances(api)),
       drr()
-    ));
+    );
 }, true);