1 files changed, 6 insertions, 0 deletions
diff --git a/packages/asset-buyer/src/constants.ts b/packages/asset-buyer/src/constants.ts
new file mode 100644
index 000000000..c0a1b090e
--- /dev/null
+++ b/packages/asset-buyer/src/constants.ts
@@ -0,0 +1,6 @@
+import { BigNumber } from '@0xproject/utils';
+
+export const constants = {
+    ZERO_AMOUNT: new BigNumber(0),
+    NULL_ADDRESS: '0x0000000000000000000000000000000000000000',
+};