refactor: extract FAR_FUTURE_EPOCH, use hex string

Author: wackerow

src/utils/envVars.ts

@@ -107,4 +107,6 @@ if(process.env.REACT_APP_MAX_QUERY_LIMIT && Number.isNaN(Number(process.env.REAC
 }
 export const MAX_QUERY_LIMIT            = Number(process.env.REACT_APP_MAX_QUERY_LIMIT) || 100;
 
-export const EXCESS_INHIBITOR           = "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff";
+export const EXCESS_INHIBITOR           = "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff";
+
+export const FAR_FUTURE_EPOCH           = "0x010000000000000000" // 18446744073709551615

src/utils/validators.ts

@@ -3,12 +3,11 @@ import { ValidatorType } from '../pages/Actions/types';
 import { BeaconChainValidator } from '../pages/TopUp/types';
 import {
   ETHER_TO_GWEI,
+  FAR_FUTURE_EPOCH,
   MAX_EFFECTIVE_BALANCE,
   MIN_ACTIVATION_BALANCE,
 } from './envVars';
 
-const FAR_FUTURE_EPOCH = new BigNumber(2).pow(63).minus(1); // 63-bit 1-filled
-
 export const hasExitEpochBeenSet = (exitEpoch: BigNumber | number) =>
   new BigNumber(exitEpoch).isLessThan(FAR_FUTURE_EPOCH);