Needed changes due to lack of support for strings over the wire.

src/features/ExpandAlias.ts

@@ -8,7 +8,7 @@ import { LanguageClient, NotificationType, RequestType } from "vscode-languagecl
 import { IFeature } from "../feature";
 import { Logger } from "../logging";
 
-export const ExpandAliasRequestType = new RequestType<string, any, void, void>("powerShell/expandAlias");
+export const ExpandAliasRequestType = new RequestType<any, any, void, void>("powerShell/expandAlias");
 
 export class ExpandAliasFeature implements IFeature {
     private command: vscode.Disposable;
@@ -39,9 +39,9 @@ export class ExpandAliasFeature implements IFeature {
                 range = new vscode.Range(sls.line, sls.character, sle.line, sle.character);
             }
 
-            this.languageClient.sendRequest(ExpandAliasRequestType, text).then((result) => {
+            this.languageClient.sendRequest(ExpandAliasRequestType, { text }).then((result) => {
                 editor.edit((editBuilder) => {
-                    editBuilder.replace(range, result);
+                    editBuilder.replace(range, result.text);
                 });
             });
         });

src/features/GetCommands.ts

@@ -2,7 +2,7 @@
  * Copyright (C) Microsoft Corporation. All rights reserved.
  *--------------------------------------------------------*/
 import * as vscode from "vscode";
-import { LanguageClient, RequestType } from "vscode-languageclient";
+import { LanguageClient, RequestType0 } from "vscode-languageclient";
 import { IFeature } from "../feature";
 import { Logger } from "../logging";
 
@@ -18,7 +18,7 @@ interface ICommand {
  * RequestType sent over to PSES.
  * Expects: ICommand to be returned
  */
-export const GetCommandRequestType = new RequestType<string, ICommand[], void, void>("powerShell/getCommand");
+export const GetCommandRequestType = new RequestType0<ICommand[], void, void>("powerShell/getCommand");
 
 /**
  * A PowerShell Command listing feature. Implements a treeview control.
@@ -63,7 +63,7 @@ export class GetCommandsFeature implements IFeature {
             this.log.writeVerbose(`<${GetCommandsFeature.name}>: Unable to send getCommand request`);
             return;
         }
-        this.languageClient.sendRequest(GetCommandRequestType, "").then((result) => {
+        this.languageClient.sendRequest(GetCommandRequestType).then((result) => {
             const SidebarConfig = vscode.workspace.getConfiguration("powershell.sideBar");
             const excludeFilter = (SidebarConfig.CommandExplorerExcludeFilter).map((filter) => filter.toLowerCase());
             result = result.filter((command) => (excludeFilter.indexOf(command.moduleName.toLowerCase()) === -1));

src/features/ShowHelp.ts

@@ -3,12 +3,12 @@
  *--------------------------------------------------------*/
 
 import vscode = require("vscode");
-import { LanguageClient, NotificationType, RequestType } from "vscode-languageclient";
+import { LanguageClient, NotificationType } from "vscode-languageclient";
 import { IFeature } from "../feature";
 import { Logger } from "../logging";
 
-export const ShowHelpRequestType =
-    new RequestType<string, void, void, void>("powerShell/showHelp");
+export const ShowHelpNotificationType =
+    new NotificationType<any, void>("powerShell/showHelp");
 
 export class ShowHelpFeature implements IFeature {
     private command: vscode.Disposable;
@@ -31,9 +31,9 @@ export class ShowHelpFeature implements IFeature {
                 const cwr = doc.getWordRangeAtPosition(selection.active);
                 const text = doc.getText(cwr);
 
-                this.languageClient.sendRequest(ShowHelpRequestType, text);
+                this.languageClient.sendNotification(ShowHelpNotificationType, { text });
             } else {
-                this.languageClient.sendRequest(ShowHelpRequestType, item.Name);
+                this.languageClient.sendNotification(ShowHelpNotificationType, { text: item.Name } );
             }
         });
     }