xen-orchestra/@vates/task/.USAGE.md

import { Task } from '@vates/task'

const task = new Task({
  // data in this object will be sent along the *start* event
  //
  // property names should be chosen as not to clash with properties used by `Task` or `combineEvents`
  data: {
    name: 'my task',
  },

  // if defined, a new detached task is created
  //
  // if not defined and created inside an existing task, the new task is considered a subtask
  onProgress(event) {
    // this function is called each time this task or one of it's subtasks change state
    const { id, timestamp, type } = event
    if (type === 'start') {
      const { name, parentId } = event
    } else if (type === 'end') {
      const { result, status } = event
    } else if (type === 'info' || type === 'warning') {
      const { data, message } = event
    } else if (type === 'property') {
      const { name, value } = event
    }
  },
})

// this field is settable once before being observed
task.id

// contains the current status of the task
//
// possible statuses are:
// - pending
// - success
// - failure
// - aborted
task.status

// Triggers the abort signal associated to the task.
//
// This simply requests the task to abort, it will be up to the task to handle or not this signal.
task.abort(reason)

// if fn rejects, the task will be marked as failed
const result = await task.runInside(fn)

// if fn rejects, the task will be marked as failed
// if fn resolves, the task will be marked as succeeded
const result = await task.run(fn)

Inside a task:

// the abort signal of the current task if any, otherwise is `undefined`
Task.abortSignal

// sends an info on the current task if any, otherwise does nothing
Task.info(message, data)

// sends an info on the current task if any, otherwise does nothing
Task.warning(message, data)

// attaches a property to the current task if any, otherwise does nothing
//
// the latest value takes precedence
//
// examples:
// - progress
Task.set(property, value)