If PowerShell has not fully initialized then err.

Tell user to try again after PowerShell has fully initialized.  This is not an ideal user experience but it is better than the current experience.

Author: rkeithhill

src/features/DebugSession.ts

@@ -73,35 +73,38 @@ export class PickPSHostProcessFeature implements IFeature {
             vscode.commands.registerCommand('PowerShell.PickPSHostProcess', () => {
 
                 if (!this.languageClient && !this.waitingForClientToken) {
+                    return new Promise<string>((resolve, reject) => {
+                        reject("PowerShell has not fully initialized.  Try to attach again after PowerShell has been initialized.");
+                    });
 
-                    // If PowerShell isn't finished loading yet, show a loading message
-                    // until the LanguageClient is passed on to us
-                    var cancelled = false;
-                    var timedOut = false;
-                    this.waitingForClientToken = new vscode.CancellationTokenSource();
-
-                    vscode.window
-                        .showQuickPick(
-                            ["Cancel"],
-                            { placeHolder: "Attach to PowerShell host process: Please wait, starting PowerShell..." },
-                            this.waitingForClientToken.token)
-                        .then(response => {
-                            if (response === "Cancel") {
-                                this.clearWaitingToken();
-                            }
-                        });
-
-                    // Cancel the loading prompt after 60 seconds
-                    setTimeout(() => {
-                            if (this.waitingForClientToken) {
-                                this.clearWaitingToken();
-
-                                vscode.window.showErrorMessage(
-                                    "Attach to PowerShell host process: PowerShell session took too long to start.");
-                            }
-                        }, 60000);
-
-                    // Wait w/timeout on language client to be initialized and then return this.pickPSHostProcess;
+                    // // If PowerShell isn't finished loading yet, show a loading message
+                    // // until the LanguageClient is passed on to us
+                    // var cancelled = false;
+                    // var timedOut = false;
+                    // this.waitingForClientToken = new vscode.CancellationTokenSource();
+
+                    // vscode.window
+                    //     .showQuickPick(
+                    //         ["Cancel"],
+                    //         { placeHolder: "Attach to PowerShell host process: Please wait, starting PowerShell..." },
+                    //         this.waitingForClientToken.token)
+                    //     .then(response => {
+                    //         if (response === "Cancel") {
+                    //             this.clearWaitingToken();
+                    //         }
+                    //     });
+
+                    // // Cancel the loading prompt after 60 seconds
+                    // setTimeout(() => {
+                    //         if (this.waitingForClientToken) {
+                    //             this.clearWaitingToken();
+
+                    //             vscode.window.showErrorMessage(
+                    //                 "Attach to PowerShell host process: PowerShell session took too long to start.");
+                    //         }
+                    //     }, 60000);
+
+                    // // Wait w/timeout on language client to be initialized and then return this.pickPSHostProcess;
                 }
                 else {
                     return this.pickPSHostProcess();