some MizePart stuff and other stuff

parts/js/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "js_part"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+deno_core = "0.383.0"
+mize = { path = "../../parts/mize" }
+tokio = { version = "1.49.0", features = ["full"] }

parts/js/src/lib.rs

@@ -0,0 +1,41 @@
+use deno_core::error::AnyError;
+use mize::{Mize, MizePart, MizeResult};
+use std::rc::Rc;
+
+pub struct JsPart {
+  mize: Mize,
+}
+
+impl JsPart {
+    pub fn new(mize: Mize) -> Self {
+        JsPart { mize }
+    }
+}
+
+impl MizePart for JsPart {
+    fn name(&self) -> &'static str {
+        "js"
+    }
+    
+    fn get_mize(&mut self) -> &mut Mize {
+        &mut self.mize
+    }
+
+    fn init(&mut self, mize: &mut Mize) -> MizeResult<()> {
+        println!("deno part init");
+        Ok(())
+    }
+}
+
+async fn run_js_file(file_path: &str) -> Result<(), AnyError> {
+    let main_module = deno_core::resolve_path(file_path, &std::env::current_dir()?)?;
+    let mut js_runtime = deno_core::JsRuntime::new(deno_core::RuntimeOptions {
+        module_loader: Some(Rc::new(deno_core::FsModuleLoader)),
+        ..Default::default()
+    });
+
+    let mod_id = js_runtime.load_main_es_module(&main_module).await?;
+    let result = js_runtime.mod_evaluate(mod_id);
+    js_runtime.run_event_loop(Default::default()).await?;
+    result.await
+}