Structura.js vs. Immer.js: Comparing libraries for writing immutable states

Immutable states are crucial in modern software development, providing more predictable and maintainable code, especially in JavaScript, where variables declared with `const` are intended to be immutable. However, immutability becomes challenging with objects as their properties can still be modified, leading to inconsistencies. Libraries like Immer.js and Structura.js address these issues by enabling developers to work with immutable data structures. Immer.js, widely used and supported, allows for easy handling of immutable states by creating a mutable draft state, which is then transformed into an immutable state, although it can face performance issues with large or nested objects. In contrast, Structura.js offers improved performance by freezing objects at compile time and supports circular references, though it is less mature with a smaller developer community. Both libraries provide tools for creating and managing immutable data structures, with Immer.js being more established and Structura.js offering performance advantages, especially in environments where resource efficiency is critical.