Task List Utilities

You are writing helper functions for a task list. Each helper should return a result without mutating the original tasks array.

Write these functions:

• addTask(tasks, title) should return a new array with a new incomplete task added.

• completeTask(tasks, taskId) should return a new array where only the matching task is completed.

• removeTask(tasks, taskId) should return a new array without the matching task.

• countIncompleteTasks(tasks) should return the number of incomplete tasks.

Sample checks:

const tasks = [  { id: 1, title: 'Review variables', completed: true },  { id: 2, title: 'Practice functions', completed: false },];const withNewTask = addTask(tasks, 'Build task utilities');console.log(withNewTask.map((task) => task.title));const completed = completeTask(withNewTask, 2);console.log(countIncompleteTasks(completed));console.log(removeTask(completed, 1).map((task) => task.id));console.log(tasks.length);console.log(countIncompleteTasks(tasks));

Expected output:

["Review variables", "Practice functions", "Build task utilities"]1[2, 3]21

The original tasks array should still have two items after these helper functions run.