fix dapp crash from undefined (#1571)

HrikB · web-flow · commit b12bcb9749d3 · 2023-06-01T14:44:58.000+02:00
diff --git a/dapp-oeth/src/hooks/useCurrencySwapper.js b/dapp-oeth/src/hooks/useCurrencySwapper.js
@@ -16,7 +16,7 @@ import {
 import { useWeb3React } from '@web3-react/core'
 import addresses from 'constants/contractAddresses'
 import curveRoutes from 'constants/curveRoutes'
-
+import { get } from 'lodash'
 import { calculateSwapAmounts } from 'utils/math'
 
 const useCurrencySwapper = ({
@@ -140,7 +140,7 @@ const useCurrencySwapper = ({
       }
 
       const allowance = parseFloat(
-        allowances[coinNeedingApproval][allowanceCheckKey]
+        get(allowances, 'coinNeedingApproval[allowanceCheckKey]')
       )
 
       setNeedsApproval(

Original file line number	Diff line number	Diff line change
`@@ -16,7 +16,7 @@ import {`
`16`	`16`	`import { useWeb3React } from '@web3-react/core'`
`17`	`17`	`import addresses from 'constants/contractAddresses'`
`18`	`18`	`import curveRoutes from 'constants/curveRoutes'`
`19`		`-`
	`19`	`+import { get } from 'lodash'`
`20`	`20`	`import { calculateSwapAmounts } from 'utils/math'`
`21`	`21`
`22`	`22`	`const useCurrencySwapper = ({`
`@@ -140,7 +140,7 @@ const useCurrencySwapper = ({`
`140`	`140`	`}`
`141`	`141`
`142`	`142`	`const allowance = parseFloat(`
`143`		`- allowances[coinNeedingApproval][allowanceCheckKey]`
	`143`	`+ get(allowances, 'coinNeedingApproval[allowanceCheckKey]')`
`144`	`144`	`)`
`145`	`145`
`146`	`146`	`setNeedsApproval(`