1 files changed, 7 insertions, 0 deletions
diff --git a/src/types.ts b/src/types.ts
index 742ac71ff..f15e05d1a 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,4 +1,5 @@
 import * as _ from 'lodash';
+import * as Web3 from 'web3';
 
 // Utility function to create a K:V from a list of strings
 // Adapted from: https://basarat.gitbooks.io/typescript/content/docs/types/literal-types.html
@@ -309,3 +310,9 @@ export interface ContractEventEmitter {
     watch: (eventCallback: EventCallback) => void;
     stopWatchingAsync: () => Promise<void>;
 }
+/**
+ * We re-export the `Web3.Provider` type specified in the Web3 Typescript typings
+ * since it is the type of the `provider` argument to the `ZeroEx` constructor.
+ * It is however a `Web3` library type, not a native `0x.js` type.
+ */
+export type Web3Provider = Web3.Provider;