BigNumber.js is a JavaScript library for arbitrary-precision arithmetic, allowing precise handling of large numbers without losing accuracy. It provides methods for performing arithmetic operations like addition, subtraction, multiplication, and division on numbers with many digits. BigNumber.js is particularly useful for applications that involve financial calculations, cryptography, or any scenario where precision is crucial.
Bn.js is a high-performance JavaScript library for arbitrary-precision integer arithmetic. It is commonly used in cryptographic algorithms, big number calculations, and other scenarios where precision and performance are crucial. Bn.js provides a wide range of operations for working with large integers, including addition, subtraction, multiplication, division, and modular arithmetic.
Both BigNumber.js and BN.js are popular npm packages for working with arbitrary precision arithmetic. BigNumber.js has been around for longer and has a larger user base and community support. BN.js is also widely used, especially in the Ethereum ecosystem.
Functionality
Both libraries provide similar functionality for working with big numbers. They support basic arithmetic operations, comparison, conversion, and formatting of big numbers. However, BigNumber.js offers more advanced features like exponential notation, trigonometric functions, and support for different number bases.
Performance
BN.js is known for its high performance and is optimized for use in cryptographic operations. It is a smaller and more lightweight library compared to BigNumber.js. BigNumber.js, on the other hand, provides more extensive functionality at the cost of slightly lower performance.
Developer Experience
Both libraries have well-documented APIs and provide a good developer experience. BigNumber.js has a more intuitive and user-friendly API, making it easier to work with. BN.js has a simpler API and is often used in conjunction with other Ethereum-related libraries.
Compatibility
BigNumber.js is a standalone library that can be used in both browser and Node.js environments. It has broader compatibility and can be used in a wider range of projects. BN.js, on the other hand, is specifically designed for use in Ethereum-related projects and is commonly used in conjunction with web3.js or ethers.js.
Community Support
Both libraries have active communities and receive regular updates. BigNumber.js has a larger community and more extensive documentation, making it easier to find resources and get support. BN.js has a smaller but dedicated community, especially within the Ethereum ecosystem.
