2 files changed, 1 insertions, 25 deletions
diff --git a/packages/0x.js/src/utils/assert.ts b/packages/0x.js/src/utils/assert.ts
index 3cff9d2cf..4cf6caf77 100644
--- a/packages/0x.js/src/utils/assert.ts
+++ b/packages/0x.js/src/utils/assert.ts
@@ -1,12 +1,12 @@
 import {assert as sharedAssert} from '@0xproject/assert';
 import {Schema, SchemaValidator} from '@0xproject/json-schemas';
+import {Web3Wrapper} from '@0xproject/web3-wrapper';
 import BigNumber from 'bignumber.js';
 import * as _ from 'lodash';
 import * as Web3 from 'web3';
 
 import {ECSignature} from '../types';
 import {signatureUtils} from '../utils/signature_utils';
-import {Web3Wrapper} from '../web3_wrapper';
 
 const HEX_REGEX = /^0x[0-9A-F]*$/i;
 
diff --git a/packages/0x.js/src/utils/promisify.ts b/packages/0x.js/src/utils/promisify.ts
deleted file mode 100644
index c114cf32f..000000000
--- a/packages/0x.js/src/utils/promisify.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-import * as _ from 'lodash';
-
-/**
- * Transforms callback-based function -- func(arg1, arg2 .. argN, callback) -- into an ES6-compatible Promise.
- * Promisify provides a default callback of the form (error, result) and rejects when `error` is not null. You can also
- * supply thisArg object as the second argument which will be passed to `apply`.
- */
-export function promisify<T>(
-    originalFn: (
-        ...args: any[],
-        // HACK: This can't be properly typed without variadic kinds https://github.com/Microsoft/TypeScript/issues/5453
-    ) => void,
-    thisArg?: any,
-): (...callArgs: any[]) => Promise<T> {
-    const promisifiedFunction = async (...callArgs: any[]): Promise<T> => {
-        return new Promise<T>((resolve, reject) => {
-            const callback = (err: Error|null, data?: T) => {
-                _.isNull(err) ? resolve(data) : reject(err);
-            };
-            originalFn.apply(thisArg, [...callArgs, callback]);
-        });
-    };
-    return promisifiedFunction;
-}