fixing #48590 use task API to fetch tasks

extensions/npm/src/main.ts

@@ -14,13 +14,14 @@ import { provideNpmScripts, hasNpmScripts, explorerIsEnabled } from './tasks';
 let taskProvider: vscode.Disposable | undefined;
 
 export async function activate(context: vscode.ExtensionContext): Promise<void> {
-	taskProvider = registerTaskProvider(context);
+	taskProvider = registerTaskProvider();
+	registerExplorer(context);
 	configureHttpRequest();
 	vscode.workspace.onDidChangeConfiguration(() => configureHttpRequest());
 	context.subscriptions.push(addJSONProviders(httpRequest.xhr));
 }
 
-function registerTaskProvider(context: vscode.ExtensionContext): vscode.Disposable | undefined {
+function registerTaskProvider(): vscode.Disposable | undefined {
 	if (vscode.workspace.workspaceFolders) {
 		let provider: vscode.TaskProvider = {
 			provideTasks: () => {
@@ -30,16 +31,14 @@ function registerTaskProvider(context: vscode.ExtensionContext): vscode.Disposab
 				return undefined;
 			}
 		};
-		let disposable = vscode.workspace.registerTaskProvider('npm', provider);
-		registerExplorer(context, provider);
-		return disposable;
+		return vscode.workspace.registerTaskProvider('npm', provider);
 	}
 	return undefined;
 }
 
-async function registerExplorer(context: vscode.ExtensionContext, provider: vscode.TaskProvider) {
-	if (explorerIsEnabled()) {
-		let treeDataProvider = vscode.window.registerTreeDataProvider('npm', new NpmScriptsTreeDataProvider(context, provider));
+async function registerExplorer(context: vscode.ExtensionContext) {
+	if (explorerIsEnabled() && vscode.workspace.workspaceFolders) {
+		let treeDataProvider = vscode.window.registerTreeDataProvider('npm', new NpmScriptsTreeDataProvider(context));
 		context.subscriptions.push(treeDataProvider);
 		if (await hasNpmScripts()) {
 			vscode.commands.executeCommand('setContext', 'hasNpmScripts', true);

extensions/npm/src/npmView.ts

@@ -6,7 +6,7 @@
 
 import * as path from 'path';
 import {
-	DebugConfiguration, Event, EventEmitter, ExtensionContext, Task, TaskProvider,
+	DebugConfiguration, Event, EventEmitter, ExtensionContext, Task,
 	TextDocument, ThemeIcon, TreeDataProvider, TreeItem, TreeItemCollapsibleState, Uri,
 	WorkspaceFolder, commands, debug, window, workspace, Selection
 } from 'vscode';
@@ -92,14 +92,12 @@ class NpmScript extends TreeItem {
 
 export class NpmScriptsTreeDataProvider implements TreeDataProvider<TreeItem> {
 	private taskTree: Folder[] | PackageJSON[] | null = null;
-	private taskProvider: TaskProvider;
 	private extensionContext: ExtensionContext;
 	private _onDidChangeTreeData: EventEmitter<TreeItem | null> = new EventEmitter<TreeItem | null>();
 	readonly onDidChangeTreeData: Event<TreeItem | null> = this._onDidChangeTreeData.event;
 
-	constructor(context: ExtensionContext, taskProvider: TaskProvider) {
+	constructor(context: ExtensionContext) {
 		const subscriptions = context.subscriptions;
-		this.taskProvider = taskProvider;
 		this.extensionContext = context;
 		subscriptions.push(commands.registerCommand('npm.runScript', this.runScript, this));
 		subscriptions.push(commands.registerCommand('npm.debugScript', this.debugScript, this));
@@ -265,7 +263,7 @@ export class NpmScriptsTreeDataProvider implements TreeDataProvider<TreeItem> {
 
 	async getChildren(element?: TreeItem): Promise<TreeItem[]> {
 		if (!this.taskTree) {
-			let tasks = await this.taskProvider.provideTasks();
+			let tasks = await workspace.fetchTasks({ type: 'npm' });
 			if (tasks) {
 				this.taskTree = this.buildTaskTree(tasks);
 			}