You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: perf.rs
    path of file: ./repos/swc/crates/swc_ecma_parser/examples
    
    the code of the file until where you have to start completion: extern crate swc_malloc;

use std::{collections::hash_map::DefaultHasher, hash::Hash};

use criterion::black_box;
use swc_common::{self, sync::Lrc, SourceMap};
use swc_ecma_parser::{lexer::Lexer, Parser, StringInput, Syntax, TsConfig};

fn main() {
    let mut cnt = 0;
    let mut hasher = DefaultHasher::new();

    for entry in walkdir::WalkDir::new("tests/typescript") {
        let entry = entry.unwrap();
        if !entry.path().to_string_lossy().ends_with(".ts")
            && !entry.path().to_string_lossy().ends_with(".tsx")
        {
            continue;
        }

        let cm: Lrc<SourceMap> = Default::default();

        let fm = cm.load_file(entry.path()).unwrap();

        let lexer = Lexer::new(
            Syntax::Typescript(TsConfig {
                no_early_errors: true,
                tsx: entry.path().to_string_lossy().ends_with(".tsx"),
                ..Default::default()
            }),
            Default::default(),
            StringInput::from(&*fm),
            None,
     
    
fn main() {
    let mut cnt = 0;
    let mut hasher = DefaultHasher::new();

    for entry in walkdir::WalkDir::new("tests/typescript") {
        let entry = entry.unwrap();
        if !entry.path().to_string_lossy().ends_with(".ts")
            && !entry.path().to_string_lossy().ends_with(".tsx")
        {
            continue;
        }

        let cm: Lrc<SourceMap> = Default::default();

        let fm = cm.load_file(entry.path()).unwrap();

        let lexer = Lexer::new(
            Syntax::Typescript(TsConfig {
                no_early_errors: true,
                tsx: entry.path().to_string_lossy().ends_with(".tsx"),
                ..Default::default()
            }),
            Default::default(),
            StringInput::from(&*fm),
            None,
        );

        let mut parser = Parser::new_from(lexer);

        let module = parser.parse_typescript_module();

        if let Ok(module) = &module {
            module.hash(&mut hasher);
        }

        let _ = black_box(module);

        cnt += 1;
    }

    eprintln!("Parsed {} files", cnt);
    eprintln!("Hash: {:?}", hasher);
}