Merge remote-tracking branch 'origin/development' into feature/utils/prettybignum

1 files changed, 11 insertions, 1 deletions

diff --git a/packages/contract-wrappers/src/utils/utils.ts b/packages/contract-wrappers/src/utils/utils.ts
index 689a7ee0a..0b3270e78 100644
--- a/packages/contract-wrappers/src/utils/utils.ts
+++ b/packages/contract-wrappers/src/utils/utils.ts
@@ -1,4 +1,8 @@
-import { BigNumber } from '@0xproject/utils';
+import { BigNumber } from '@0x/utils';
+import { Web3Wrapper } from '@0x/web3-wrapper';
+import * as _ from 'lodash';
+
+import { constants } from './constants';
 
 export const utils = {
     getCurrentUnixTimestampSec(): BigNumber {
@@ -8,4 +12,10 @@ export const utils = {
     getCurrentUnixTimestampMs(): BigNumber {
         return new BigNumber(Date.now());
     },
+    numberPercentageToEtherTokenAmountPercentage(percentage: number): BigNumber {
+        return Web3Wrapper.toBaseUnitAmount(constants.ONE_AMOUNT, constants.ETHER_TOKEN_DECIMALS).mul(percentage);
+    },
+    removeUndefinedProperties<T extends object>(obj: T): Partial<T> {
+        return _.pickBy(obj);
+    },
 };