ButterflyEffect/uniswap-interface-uncensored
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improvement(swap errors): show more information about the swap error

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This commit is contained in:
Moody Salem 2020-08-10 12:05:35 -05:00
parent 0f91af1df2
commit e589c751d7
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GPG Key ID: 8CB5CD10385138DB
1 changed files with 6 additions and 6 deletions
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12
src/hooks/useSwapCallback.ts
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@ -104,8 +104,6 @@ function useSwapCallArguments(
}, [account, allowedSlippage, chainId, deadline, library, recipient, trade, v1Exchange])
}
const DEFAULT_FAILED_SWAP_ERROR = 'Unexpected error. Please try again or contact support.'
// returns a function that will execute a swap, if the parameters are all valid
// and the user has approved the slippage adjusted input amount for the trade
export function useSwapCallback(
@ -161,17 +159,19 @@ export function useSwapCallback(
return contract.callStatic[methodName](...args, options)
.then(result => {
console.debug('Unexpected successful call after failed estimate gas', call, gasError, result)
return { call, error: new Error(DEFAULT_FAILED_SWAP_ERROR) }
return { call, error: new Error('Unexpected issue with estimating the gas. Please try again.') }
})
.catch(callError => {
console.debug('Call threw error', call, callError)
let errorMessage: string = DEFAULT_FAILED_SWAP_ERROR
let errorMessage: string
switch (callError.reason) {
case 'UniswapV2Router: INSUFFICIENT_OUTPUT_AMOUNT':
case 'UniswapV2Router: EXCESSIVE_INPUT_AMOUNT':
errorMessage =
'This transaction will not succeed either due to price movement or fee on transfer. Try increasing your slippage tolerance.'
break
default:
errorMessage = `The transaction cannot succeed due to error: ${callError.reason}. This is probably an issue with one of the tokens you are swapping.`
}
return { call, error: new Error(errorMessage) }
})
@ -188,7 +188,7 @@ export function useSwapCallback(
if (!successfulEstimation) {
const errorCalls = estimatedCalls.filter((call): call is FailedCall => 'error' in call)
if (errorCalls.length > 0) throw errorCalls[errorCalls.length - 1].error
throw new Error(DEFAULT_FAILED_SWAP_ERROR)
throw new Error('Unexpected error. Please contact support: none of the calls threw an error')
}
const {
@ -235,7 +235,7 @@ export function useSwapCallback(
} else {
// otherwise, the error was unexpected and we need to convey that
console.error(`Swap failed`, error, methodName, args, value)
throw new Error(DEFAULT_FAILED_SWAP_ERROR)
throw new Error(`Swap failed: ${error.message}`)
}
})
},