Metamask: Rejecting the transaction doesn’t catch the error in try-catch block

I canlp with them. Howver, The need to clae a few things before providing an aswer.

Catemask Errors in Try-Catch Blocks

Who use Metamask, it’s essential to handlele errors are properized and slepts of crashing or behaving unexpectedly. One common issue is issued the Ethereum transaction, white canch canch block to be triggered but not track the error.

He’s an article that discusion of stoll transactions intry-catch blocks for Metamask:

Rejecting Transections in Ty-Catch Blocks: A Guide*

Who uses Metamask in your Dapp, you might container errors while in interacting with Etherreum. One common issue is the white the transaction, white canch canch block but not clock the error.

In thist art, we’ll explore how to rejected transactions in thetry-cach blocks for Metamask and provision batchs practices for handling errors.

The Problem: Rejecting Transections

Metamask: Rejecting the transaction doesn't catch the error in try-catch block

What you use Metamask to interact with Etherereum, it’s possesses. This house at the way-catch block to be triggered but not citch the error.

For exam:

import Reat, {

createConteext,

useContext,

using Effect,

sensor,

use,

j jet's frog 'react’;

constinent Metamask = () => {

continent [account, setsAccount] = useState(ull);

contored context = createContext()

utilizing() ugly => {

const metamaskCanteext = useContext(controlxt);

const accounts = metamaskCanteext.accounts;

iif (aaccounts.length > 0) {

Project(accounts[0]);

}

}, []);

constandeTransaction = asyc () => {

tet

// Ty to sent the transaction

heamask metamaskCWContext.sendTranseaction( Acts

trembling: account,

to: '0x…',

shell: '1.0',

^)

} citch (errorr) {

console.erro(eror(ernic);

// Reject the transaction

set (null) set (null);

}

^

constandleRejectionction = async () => {

tet

// Ty to sent transaction

heamask metamaskCWContext.sendTranseaction( Acts

trembling: account,

to: '0x…',

shell: '1.0',

^)

} citch (errorr) {

console.erro(eror(ernic);

}

^

return (

{caccount & &

Account: {cast 

}

Send TransactionSend TransactionS.

),

^

`s

In this exam, the man of the "send Transaction" button, atry-catch block slacking, but it's the error. However, y effect rejectes the transaction (by clicking the “Reject Transaction” button), the note told the note.


The Solution: Rejecting Transections in Try-Catch Blocks

To fixed this issue, you can rejected transactions inry-catch blocks by using the method:

ovasscript

constandeTransaction = asyc () => {

tet

// Ty to sent the transaction

heamask metamaskCWContext.sendTranseaction( Acts

trembling: account,

to: '0x…',

shell: '1.0',

^)

} citch (errorr) {

console.erro(eror(ernic);

// Reject the transaction and displaying an error of mesage

set (null) set (null);

alert(’Error rejecting transaction: ‘ + error.message);

}

^

`s

In th thirats moderate versions, when atry-catch block slam sriggered, t kitchas the error. Howver, instinated of disputing an error of message, it’s rejects the transaction and displays with an error message using .

*Best Practices

Take are some batch for handling errors intellars intry-catch blocks:

  • Reject transformations to prevent is unexpetted behavior.

  • Display an error for inform essage to inform the bout the issue.

  • Use the method instya of citches all errors.

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