Merge pull request #8244 from zhengbli/i4420

Provide server response when reload is done

src/server/session.ts

@@ -1084,7 +1084,7 @@ namespace ts.server {
             [CommandNames.Reload]: (request: protocol.Request) => {
                 const reloadArgs = <protocol.ReloadRequestArgs>request.arguments;
                 this.reload(reloadArgs.file, reloadArgs.tmpfile, request.seq);
-                return { responseRequired: false };
+                return {response: { reloadFinished: true }, responseRequired: true};
             },
             [CommandNames.Saveto]: (request: protocol.Request) => {
                 const savetoArgs = <protocol.SavetoRequestArgs>request.arguments;