refactor: attenuate chainHub in settler

Author: turadg

packages/fast-usdc-contract/src/exos/settler.ts

@@ -142,7 +142,7 @@ export const stateShape = harden({
 export const prepareSettler = (
   zone: Zone,
   {
-    chainHub, // TODO POLA
+    chainHub,
     feeConfig,
     forwardFunds,
     getNobleICA,
@@ -153,7 +153,7 @@ export const prepareSettler = (
     withdrawToSeat,
     zcf,
   }: {
-    chainHub: ChainHub;
+    chainHub: Pick<ChainHub, 'resolveAccountId'>;
     feeConfig: FeeConfig;
     forwardFunds: (tx: {
       txHash: EvmHash;

packages/fast-usdc-contract/src/fast-usdc.contract.ts

@@ -171,7 +171,8 @@ export const contract = async (
     getNobleICA,
     vowTools: tools.vowTools,
     zcf,
-    chainHub,
+    // UNTIL we have an generic way to attenuate an Exo https://github.com/Agoric/agoric-sdk/issues/11309
+    chainHub: { resolveAccountId: chainHub.resolveAccountId.bind(chainHub) },
   });
 
   const zoeTools = makeZoeTools(zcf, vowTools);