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denoland-deno/core/examples/fs_module_loader.rs
2023-03-13 18:50:23 +01:00

40 lines
1.1 KiB
Rust

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use anyhow::Context;
use deno_core::anyhow::Error;
use deno_core::FsModuleLoader;
use deno_core::JsRuntime;
use deno_core::RuntimeOptions;
use std::rc::Rc;
fn main() -> Result<(), Error> {
let args: Vec<String> = std::env::args().collect();
if args.len() < 2 {
println!("Usage: target/examples/debug/fs_module_loader <path_to_module>");
std::process::exit(1);
}
let main_url = &args[1];
println!("Run {main_url}");
let mut js_runtime = JsRuntime::new(RuntimeOptions {
module_loader: Some(Rc::new(FsModuleLoader)),
..Default::default()
});
let runtime = tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()?;
let main_module = deno_core::resolve_path(
main_url,
&std::env::current_dir().context("Unable to get CWD")?,
)?;
let future = async move {
let mod_id = js_runtime.load_main_module(&main_module, None).await?;
let result = js_runtime.mod_evaluate(mod_id);
js_runtime.run_event_loop(false).await?;
result.await?
};
runtime.block_on(future)
}