Stop accesing ethers private methods

1 files changed, 3 insertions, 4 deletions

diff --git a/packages/base-contract/src/index.ts b/packages/base-contract/src/index.ts
index 7e0428d92..a8e4ad2e2 100644
--- a/packages/base-contract/src/index.ts
+++ b/packages/base-contract/src/index.ts
@@ -12,13 +12,12 @@ import {
     TxDataPayable,
 } from 'ethereum-types';
 import * as ethers from 'ethers';
-import { Interface } from 'ethers/utils/interface';
 import * as _ from 'lodash';
 
 import { formatABIDataItem } from './utils';
 
 export interface EthersInterfaceByFunctionSignature {
-    [key: string]: Interface;
+    [key: string]: ethers.utils.Interface;
 }
 
 const REVERT_ERROR_SELECTOR = '08c379a0';
@@ -118,7 +117,7 @@ export class BaseContract {
             }
         }
     }
-    protected _lookupEthersInterface(functionSignature: string): Interface {
+    protected _lookupEthersInterface(functionSignature: string): ethers.utils.Interface {
         const ethersInterface = this._ethersInterfacesByFunctionSignature[functionSignature];
         if (_.isUndefined(ethersInterface)) {
             throw new Error(`Failed to lookup method with function signature '${functionSignature}'`);
@@ -155,7 +154,7 @@ export class BaseContract {
         this._ethersInterfacesByFunctionSignature = {};
         _.each(methodAbis, methodAbi => {
             const functionSignature = abiUtils.getFunctionSignature(methodAbi);
-            this._ethersInterfacesByFunctionSignature[functionSignature] = new Interface([methodAbi]);
+            this._ethersInterfacesByFunctionSignature[functionSignature] = new ethers.utils.Interface([methodAbi]);
         });
     }
 }