[mod] add Shutdown handler

langserver/main.go

@@ -16,6 +16,7 @@ func CreateServer() *jrpc2.Server {
 		//"textDocument/references": handler.New(TextDocumentReferences),
 		//"textDocument/codeLens": handler.New(TextDocumentCodeLens),
 		"exit":            handler.New(Exit),
+		"shutdown":        handler.New(Shutdown),
 		"$/cancelRequest": handler.New(CancelRequest),
 	}, &jrpc2.ServerOptions{
 		AllowPush: true,

langserver/shutdown.go

@@ -0,0 +1,17 @@
+package langserver
+
+import (
+	"context"
+	"os"
+
+	lsp "github.com/sourcegraph/go-lsp"
+)
+
+func Shutdown(ctx context.Context, vs lsp.None) error {
+	err := os.Remove(tempFile.Name())
+	if err != nil {
+		return err
+	}
+
+	return nil
+}