refactor the constructor

Author: Hweinstock

packages/core/src/applicationcomposer/activation.ts

@@ -10,7 +10,7 @@ import { openTemplateInComposerCommand } from './commands/openTemplateInComposer
 import { openInComposerDialogCommand } from './commands/openInComposerDialog'
 
 export async function activate(extensionContext: vscode.ExtensionContext): Promise<void> {
-    const visualizationManager = new ApplicationComposerManager(extensionContext)
+    const visualizationManager = await ApplicationComposerManager.create(extensionContext)
 
     extensionContext.subscriptions.push(
         openTemplateInComposerCommand.register(visualizationManager),

packages/core/src/applicationcomposer/webviewManager.ts

@@ -23,13 +23,15 @@ export class ApplicationComposerManager {
     protected readonly name: string = 'ApplicationComposerManager'
 
     protected readonly managedVisualizations = new Map<string, ApplicationComposer>()
-    protected extensionContext: vscode.ExtensionContext
     protected webviewHtml?: string
     protected readonly logger = getLogger()
 
-    public constructor(extensionContext: vscode.ExtensionContext) {
-        this.extensionContext = extensionContext
-        void this.fetchWebviewHtml()
+    private constructor(protected extensionContext: vscode.ExtensionContext) {}
+
+    public static async create(extensionContext: vscode.ExtensionContext): Promise<ApplicationComposerManager> {
+        const obj = new ApplicationComposerManager(extensionContext)
+        await obj.fetchWebviewHtml()
+        return obj
     }
 
     private async fetchWebviewHtml() {

packages/core/src/test/applicationcomposer/utils.ts

@@ -10,7 +10,7 @@ import { WebviewContext } from '../../applicationcomposer/types'
 import { MockDocument } from '../fake/fakeDocument'
 
 export async function createTemplate() {
-    const manager = new ApplicationComposerManager(globals.context)
+    const manager = await ApplicationComposerManager.create(globals.context)
     const panel = await manager.createTemplate()
     assert.ok(panel)
     return panel