Get build and tests to pass

1 files changed, 3 insertions, 2 deletions

diff --git a/packages/order-watcher/src/utils/assert.ts b/packages/order-watcher/src/utils/assert.ts
index e88f9ac72..5d7f72716 100644
--- a/packages/order-watcher/src/utils/assert.ts
+++ b/packages/order-watcher/src/utils/assert.ts
@@ -1,9 +1,10 @@
 import { assert as sharedAssert } from '@0xproject/assert';
 // We need those two unused imports because they're actually used by sharedAssert which gets injected here
-// tslint:disable-next-line:no-unused-variable
+// tslint:disable:no-unused-variable
 import { Schema } from '@0xproject/json-schemas';
-// tslint:disable-next-line:no-unused-variable
 import { ECSignature } from '@0xproject/types';
+import { BigNumber } from '@0xproject/utils';
+// tslint:enable:no-unused-variable
 
 import { isValidSignature } from '@0xproject/order-utils';