Function process_files_batch 

pub fn process_files_batch<P, F, R>(paths: &[P], processor: F) -> Vec<R>
where
    P: AsRef<Path> + Sync,
    F: Fn(&Path) -> R + Sync + Send,
    R: Send,

Process multiple files in batch with optional parallelism

Parallel Processing (CLI builds)

When the parallel feature is enabled (default), this function uses rayon to process files across multiple CPU cores. The number of threads is automatically determined by rayon based on available cores.

Sequential Processing (Worker builds)

When the parallel feature is disabled (e.g., for Cloudflare Workers), files are processed sequentially in a single thread. This avoids SharedArrayBuffer requirements and ensures compatibility with edge runtimes.

Example

let paths = vec![
    PathBuf::from("src/main.rs"),
    PathBuf::from("src/lib.rs"),
];

let results = process_files_batch(&paths, |path| {
    std::fs::read_to_string(path).unwrap()
});