1 files changed, 13 insertions, 0 deletions
diff --git a/packages/website/ts/types.ts b/packages/website/ts/types.ts
index 14e777d1a..d9b2ef618 100644
--- a/packages/website/ts/types.ts
+++ b/packages/website/ts/types.ts
@@ -1,5 +1,6 @@
 import { ECSignature } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
+import { Provider } from 'ethereum-types';
 import * as React from 'react';
 
 export enum Side {
@@ -574,4 +575,16 @@ export enum AccountState {
     Loading = 'Loading',
     Locked = 'Locked',
 }
+
+export interface InjectedProvider extends Provider {
+    publicConfigStore?: InjectedProviderObservable;
+}
+
+// Minimal expected interface for an injected web3 object
+export interface InjectedWeb3 {
+    currentProvider: InjectedProvider;
+    version: {
+        getNetwork(cd: (err: Error, networkId: string) => void): void;
+    };
+}
 // tslint:disable:max-file-line-count