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-rw-r--r--packages/contract-wrappers/src/utils/constants.ts2
-rw-r--r--packages/contract-wrappers/src/utils/utils.ts6
2 files changed, 8 insertions, 0 deletions
diff --git a/packages/contract-wrappers/src/utils/constants.ts b/packages/contract-wrappers/src/utils/constants.ts
index 2df11538c..78441decf 100644
--- a/packages/contract-wrappers/src/utils/constants.ts
+++ b/packages/contract-wrappers/src/utils/constants.ts
@@ -12,4 +12,6 @@ export const constants = {
UNLIMITED_ALLOWANCE_IN_BASE_UNITS: new BigNumber(2).pow(256).minus(1),
DEFAULT_BLOCK_POLLING_INTERVAL: 1000,
ZERO_AMOUNT: new BigNumber(0),
+ ONE_AMOUNT: new BigNumber(1),
+ ETHER_TOKEN_DECIMALS: 18,
};
diff --git a/packages/contract-wrappers/src/utils/utils.ts b/packages/contract-wrappers/src/utils/utils.ts
index 689a7ee0a..f7949ec34 100644
--- a/packages/contract-wrappers/src/utils/utils.ts
+++ b/packages/contract-wrappers/src/utils/utils.ts
@@ -1,4 +1,7 @@
import { BigNumber } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+
+import { constants } from './constants';
export const utils = {
getCurrentUnixTimestampSec(): BigNumber {
@@ -8,4 +11,7 @@ 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);
+ },
};