Metamask: Ether.js BigNumber overflow when I use a contract with wei

Metamask Ether.js BIGNUMBER Overflow: Troubleshooting Guide to Smart Contracts

As developers who cooperate with Defi Applications, they are likely to raise questions about large and Awei conversions. In this article, we are immersed in the problem of BIGNUMBER overflow when Ethereum is used metamask, with particular reference to ether.js.

The problem

When the user tries to enter an amount above 999 in his wallet, it triggers a BIGNUM overflow. The reason for this is that BIGNUMBER.JS expects numbers within a certain range (usually -2^53 and 2^53) before causing an overflow. When the input exceeds this range, the result blows around and results in incorrect conversions.

The problem with ether.js BIGNUMBER

Ether.js provides a BIGNUM realization that allows arbitrary accuracy arithmetic. However, when using Metamask Ethereum, the BIGNUMBER library is not designed to treat a large number effectively. This can lead to performance problems and eventually an overflow error.

Solution: Use a decimal.js or other BIGNUMBER library

It is advisable to use a more appropriate directory to avoid the overflow problem of the BIGNUMBER to overflow. Two popular alternatives:

* decimal.js : JavaScript library that supports decimal arithmetic up to 1024 digits. You can easily replace BIGNUMBER.JS with decimal.js in your code.

* bnp.js

: Another popular BIGNUMBER implementation designed specifically for Ethereum.

Here’s an example of how to change the contract to use BNP.JS:

`Javascript

Import {bn} from '@bnpjs/bn -polyifill';

// Determine the variables

CONST quantity = new BN ('0x123456789012345678901234567890);

// Complete the conversion and store the result

New BNB (). GetdecaMalalamount (sum);

The best exercises

• When working with large numbers, consider using a library that provides optimized BIGNUMBER implementation such as decimal.js or bnp.js.

• Always enforce the user input to prevent unexpected errors.

• Keep the logic of the contract from the library used for number management. This facilitates shifts between libraries if necessary.

Conclusion

If you understand the problem of overflowing the bignumber when using Metamask on Ethereum, you can take steps to avoid the question and to ensure the success of smart contracts. By exploring alternative libraries, such as decimal.js or bnp.js, you can write a more efficient and reliable code that handles it easily.

More sources

If you are interested in finding out more about BIGNUMBER.JS and other numeric libraries, here are some additional sources:

• [BIGNUMBER.JS Documentation] (

• [Decimal.js documentation] (

• [Bnp.js documentation] (

ETHEREUM WHAT CREATED DUPLICATE