Understanding React Compiler

React's core architecture of calling functions repeatedly can lead to performance issues, especially with expensive functions. The React Compiler automates performance tuning by rewriting code to include memoization and caching. Transpilers, compilers, and optimizers are tools that analyze and transform code into a functionally equivalent form. The Fiber tree in React manages state and dependencies, with the React Compiler enhancing performance by automatically caching results. While this saves processing power, it increases memory usage and can complicate debugging due to additional abstraction layers.