Show error when attach request is selected but not supported

crates/dap/src/adapters.rs

@@ -312,6 +312,12 @@ pub trait DebugAdapter: 'static + Send + Sync {
     /// Should return base configuration to make the debug adapter work
     fn request_args(&self, config: &DebugAdapterConfig) -> Value;
 
+    /// Whether the adapter supports `attach` request,
+    /// if not support and the request is selected we will show an error message
+    fn supports_attach(&self) -> bool {
+        false
+    }
+
     /// Filters out the processes that the adapter can attach to for debugging
     fn attach_processes<'a>(
         &self,

crates/dap_adapters/src/javascript.rs

@@ -145,6 +145,10 @@ impl DebugAdapter for JsDebugAdapter {
         })
     }
 
+    fn supports_attach(&self) -> bool {
+        true
+    }
+
     fn attach_processes<'a>(
         &self,
         processes: &'a HashMap<Pid, Process>,

crates/project/src/dap_store.rs

@@ -251,6 +251,12 @@ impl DapStore {
                         .context("Creating debug adapter")?,
                 );
 
+                if !adapter.supports_attach()
+                    && matches!(config.request, DebugRequestType::Attach(_))
+                {
+                    return Err(anyhow!("Debug adapter does not support `attach` request"));
+                }
+
                 let path = cx.update(|cx| {
                     let name = LanguageServerName::from(adapter.name().as_ref());