fix(wrap): don't clone deep

src/ethers.ts

@@ -1,7 +1,7 @@
 import DataLoader from "dataloader";
-import { Contract, ethers } from "ethers";
+import { BaseContract, Contract, ethers } from "ethers";
 import { FunctionFragment, Interface } from "ethers/lib/utils";
-import _cloneDeep from "lodash/cloneDeep";
+import _clone from "lodash/clone";
 
 import MulticallAbi from "./abi.json";
 import { Multicall, IMulticallWrapper, CallStruct } from "./interface";
@@ -14,8 +14,6 @@ export type ContractCall = {
   stack?: string;
 };
 
-type TargetContract = Pick<Contract, "functions" | "interface" | "callStatic" | "address">;
-
 export const isMulticallUnderlyingError = (err: Error) =>
   err.message.includes("Multicall call failed for");
 
@@ -133,8 +131,10 @@ export class EthersMulticall implements IMulticallWrapper {
     return result;
   }
 
-  wrap<T extends TargetContract>(contract: T) {
-    const copy = Object.setPrototypeOf(_cloneDeep(contract), Object.getPrototypeOf(contract)) as T;
+  wrap<T extends BaseContract>(contract: T) {
+    const copy = Object.setPrototypeOf(_clone(contract), Object.getPrototypeOf(contract));
+    copy.callStatic = _clone(contract.callStatic);
+    copy.functions = _clone(contract.functions);
 
     (
       contract.interface.fragments.filter(
@@ -161,7 +161,7 @@ export class EthersMulticall implements IMulticallWrapper {
       Object.defineProperty(copy.functions, fragment.name, descriptor);
     });
 
-    return copy;
+    return copy as T;
   }
 }
 

src/interface.ts

@@ -4,7 +4,6 @@ import type {
   BigNumberish,
   BytesLike,
   CallOverrides,
-  Contract,
   ContractTransaction,
   Overrides,
   PopulatedTransaction,
@@ -17,8 +16,6 @@ import type {
 import type { FunctionFragment, Result } from "@ethersproject/abi";
 import type { Listener } from "@ethersproject/providers";
 
-export type TargetContract = Pick<Contract, "functions" | "interface" | "callStatic" | "address">;
-
 export type CallStruct = { target: string; callData: BytesLike };
 
 export type CallStructOutput = [string, string] & {
@@ -255,5 +252,5 @@ export interface Multicall extends BaseContract {
 
 export interface IMulticallWrapper {
   get contract(): Multicall;
-  wrap<T extends TargetContract>(contract: T): T;
+  wrap<T extends BaseContract>(contract: T): T;
 }