use Prioritized Task Scheduling API

[DrSensor]

refactor/delete core/task.js and use scheduler.postTask

[DrSensor]

behold, scheduler.yield is out and it can inherit abort signal from scheduler.postTask

example

let controller;

async function longTask() {
  try {
    blockMainThread(500);

    // Yield the task using the scheduler, passing the signal from the controller
    // The "inherit" option means the task will inherit the signal from its parent
    await scheduler.yield({ signal: "inherit" });

    // If the user cancels the task, the code below will not run
    blockMainThread(500);
  } catch (error) {
    if (error.name === "AbortError") {
    // Handle the abort
  }
}
}

startButton.addEventListener("click", () => {
  controller = new TaskController();

  // Post the longTask to the scheduler, passing the signal from the controller
  scheduler.postTask(longTask, {
    signal: controller.signal,
  });
});

cancelButton.addEventListener("click", () => {
  if (controller) {
    controller.abort();
  }
});