Metamask ether.Js Bignumber Overflow: Troubleshooting Manual for Smart Agreements
As a developer working with Defi applications, you may have encountered issues related to a large number and WWES conversion. In this article, we will go into the Bignumber overflow problem using Metamask on Ethereum, especially for ether.
Question
When the user tries to enter the amount above 999 in his wallet, he causes a bignumber overflow error. This is because the bignumber.Yes await the numbers in a given range (usually -2^53 to 2^53) before the overflow is caused. When the input exceeds this range, the result is surrounded by incorrect conversions.
Problem with ether.Js Bignumber
Ether. However, using Metamask on Ethereum, the Bignumber Library is not intended to effectively handle a large number. This can lead to performance problems and ultimately overflow.
Solution: Use Decimal.Js or other bignumber library
To avoid bignumber overflow problems, it is advisable to use a more appropriate library to process numbers in your smart contract. Two popular alternatives are:
* Decimal.Js : JavaScript Library, which provides support for decimal arithmetic up to 1024 digits. In the code you can easily replace bignumber.js with decimal.Js.
* BNP.JS : Another popular introduction of Bignumber specifically designed for Ethereum.
Here is an example of how you could change your contract to use BNP.Js:
`JavaScript
Import {bn} from ‘@bnpjs/bn-polyfill’;
// Define the variables
Const sum = new BN (‘0x123456789012345678901234567890’);
// Make a conversion and save the result
New BNB (). Getdecimalamount (amount);
`
Best Practice
- When working with a large number, consider using a library that provides optimized Bignumber introduction, such as Decimal.Js or BNP.Js.
- Always confirm the user input to prevent unexpected errors.
- Save the logic of the contract separately from the library used to process the number. This will facilitate the switching between libraries if necessary.
Conclusion
Understanding the Bignumber overflow problem using Metamask on Ethereum, you can take steps to avoid this problem and ensure the success of your smart contracts. By studying alternative libraries such as Decimal.Js or BNP.Js, you will be able to write a more effective and reliable code that easily processes a large number.
Additional resources
If you are interested in learning more about bignumber.JS and other number processing libraries, here are some additional resources:
- [Bignumber.js documentation] (
- [Decimal.js documentation] (
- [BNP.JS Documentation] (