TaskController: setPriority() method

setPriority(priority)

// Create a TaskController with default priority: 'user-visible'
const controller = new TaskController();

// Post task passing the controller's signal.
// The signal priority sets the initial priority of the task
scheduler
  .postTask(() => "Task execute", { signal: controller.signal })
  .then((taskResult) => {
    console.log(`${taskResult}`);
  }) // Run on success)
  .catch((error) => {
    console.log(`Catch error: ${error}`);
  }); // Run on fail

// Change the priority to 'background' using the controller
controller.setPriority("background");