Merge pull request #1517 from 0xProject/feature/bignumber-8.0

Bignumber 8.0

3 files changed, 5 insertions, 5 deletions

diff --git a/packages/utils/src/abi_encoder/evm_data_types/bool.ts b/packages/utils/src/abi_encoder/evm_data_types/bool.ts
index 7f91f34e6..23298bc88 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/bool.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/bool.ts
@@ -37,11 +37,11 @@ export class BoolDataType extends AbstractBlobDataType {
         const valueBuf = calldata.popWord();
         const valueHex = ethUtil.bufferToHex(valueBuf);
         const valueNumber = new BigNumber(valueHex, constants.HEX_BASE);
-        if (!(valueNumber.equals(0) || valueNumber.equals(1))) {
+        if (!(valueNumber.isEqualTo(0) || valueNumber.isEqualTo(1))) {
             throw new Error(`Failed to decode boolean. Expected 0x0 or 0x1, got ${valueHex}`);
         }
         /* tslint:disable boolean-naming */
-        const value: boolean = !valueNumber.equals(0);
+        const value: boolean = !valueNumber.isEqualTo(0);
         /* tslint:enable boolean-naming */
         return value;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/int.ts b/packages/utils/src/abi_encoder/evm_data_types/int.ts
index cc3164b18..f8be1f778 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/int.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/int.ts
@@ -38,8 +38,8 @@ export class IntDataType extends AbstractBlobDataType {
             throw new Error(`Tried to instantiate Int with bad input: ${dataItem}`);
         }
         this._width = IntDataType._decodeWidthFromType(dataItem.type);
-        this._minValue = new BigNumber(2).toPower(this._width - 1).times(-1);
-        this._maxValue = new BigNumber(2).toPower(this._width - 1).sub(1);
+        this._minValue = new BigNumber(2).exponentiatedBy(this._width - 1).times(-1);
+        this._maxValue = new BigNumber(2).exponentiatedBy(this._width - 1).minus(1);
     }
 
     public encodeValue(value: BigNumber | string | number): Buffer {
diff --git a/packages/utils/src/abi_encoder/evm_data_types/uint.ts b/packages/utils/src/abi_encoder/evm_data_types/uint.ts
index 8e382e8dc..a82aa789e 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/uint.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/uint.ts
@@ -38,7 +38,7 @@ export class UIntDataType extends AbstractBlobDataType {
             throw new Error(`Tried to instantiate UInt with bad input: ${dataItem}`);
         }
         this._width = UIntDataType._decodeWidthFromType(dataItem.type);
-        this._maxValue = new BigNumber(2).toPower(this._width).sub(1);
+        this._maxValue = new BigNumber(2).exponentiatedBy(this._width).minus(1);
     }
 
     public encodeValue(value: BigNumber | string | number): Buffer {