Function format_lex_source 

pub fn format_lex_source(source: &str) -> Result<String, String>

Round-trip transformation: parse and re-serialize

Useful for formatting operations and testing.

Example

use lex_babel::transforms::format_lex_source;

let source = "Hello world\n";
let formatted = format_lex_source(source).unwrap();
assert_eq!(formatted, "Hello world\n");