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-rw-r--r--packages/contract-wrappers/src/utils/constants.ts2
1 files changed, 2 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,
};