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: modulehandler.rs
    path of file: ./repos/boa/examples/src/bin
    
    the code of the file until where you have to start completion: // This example implements a custom module handler which mimics
// the require/module.exports pattern

use boa_engine::{
    js_string, native_function::NativeFunction, prelude::JsObject, property::Attri
    
fn require(_: &JsValue, args: &[JsValue], ctx: &mut Context) -> JsResult<JsValue> {
    let arg = args.get_or_undefined(0);

    // BUG: Dev branch seems to be passing string arguments along with quotes
    let libfile = arg.to_string(ctx)?.to_std_string_escaped();

    // Read the module source file
    println!("Loading: {libfile}");
    let buffer =
        read_to_string(libfile).map_err(|e| JsNativeError::typ().with_message(e.to_string()))?;
    // Load and parse the module source
    ctx.eval(Source::from_bytes(&buffer))?;

    // Access module.exports and return as ResultValue
    let global_obj = ctx.global_object();
    let module = global_obj.get(js_string!("module"), ctx)?;
    module
        .as_object()
        .ok_or_else(|| JsNativeError::typ().with_message("`exports` property was not an object"))?
        .get(js_string!("exports"), ctx)
}