Task Provider Sample shows no tasks about vscode-extension-samples HOT 2 CLOSED

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
import * as vscode from 'vscode';


export class TaskProvider implements vscode.TaskProvider {
	static esp_tool_task_type = 'esp_tool_tasks';
	private tasks: vscode.Task[] | undefined;

	// We use a CustomExecution task when state needs to be shared across runs of the task or when 
	// the task requires use of some VS Code API to run.
	// If you don't need to share state between runs and if you don't need to execute VS Code API in your task, 
	// then a simple ShellExecution or ProcessExecution should be enough.
	// Since our build has this shared state, the CustomExecution is used below.

	constructor(private workspaceRoot: string) { }

	public async provideTasks(): Promise<vscode.Task[]> {
		return this.getTasks();
	}

	public resolveTask(_task: vscode.Task): vscode.Task | undefined {
			return this.getTask(_task.definition);
	}

	private getTasks(): vscode.Task[] {
		if (this.tasks !== undefined) {
			return this.tasks;
		}

		this.tasks = [];
		this.tasks.push(this.getTask({type:TaskProvider.esp_tool_task_type}));
		return this.tasks;
	}

	private getTask(definition: any): vscode.Task {
		if (definition === undefined) {
			definition = {type: TaskProvider.esp_tool_task_type};
		}
		const execution = new vscode.ShellExecution("echo \"Hello World\"");
		const problemMatchers = ["$myProblemMatcher"];
		return (new vscode.Task(definition, vscode.TaskScope.Workspace,
				"Build", "myExtension", execution, problemMatchers));
	}
}