Fix rounding issue when sending max tokens (#5695)

* Fix rounding issue when sending max tokens

* Ensure amount row shows exact amount of max tokens on send screen (#2)

* Fix tests

* Change stored redux value from BigNumber to hex string. Fix TokenInput default value

1 files changed, 2 insertions, 4 deletions

diff --git a/ui/app/components/send/send.utils.js b/ui/app/components/send/send.utils.js
index eb1667c63..b2ac41e9c 100644
--- a/ui/app/components/send/send.utils.js
+++ b/ui/app/components/send/send.utils.js
@@ -89,11 +89,10 @@ function isTokenBalanceSufficient ({
   const tokenBalanceIsSufficient = conversionGTE(
     {
       value: tokenBalance,
-      fromNumericBase: 'dec',
+      fromNumericBase: 'hex',
     },
     {
       value: calcTokenAmount(amountInDec, decimals),
-      fromNumericBase: 'dec',
     },
   )
 
@@ -151,7 +150,6 @@ function getAmountErrorObject ({
 }
 
 function getGasFeeErrorObject ({
-  amount,
   amountConversionRate,
   balance,
   conversionRate,
@@ -180,7 +178,7 @@ function getGasFeeErrorObject ({
 
 function calcTokenBalance ({ selectedToken, usersToken }) {
   const { decimals } = selectedToken || {}
-  return calcTokenAmount(usersToken.balance.toString(), decimals) + ''
+  return calcTokenAmount(usersToken.balance.toString(), decimals).toString(16)
 }
 
 function doesAmountErrorRequireUpdate ({