{
  "before": {
    "desc": "Specify tasks that must complete before watchers begin",
    "type": "array",
    "alias": ["b"],
    "default": []
  },
  "block": {
    "desc": "Ignore subsequent file-changes until tasks complete",
    "type": "boolean"
  },
  "throttle": {
    "desc": "Take only the first change that occurs in a specified duration.",
    "type": "number"
  },
  "debounce": {
    "desc": "Take only the last change following the specified window of event silence",
    "type": "number"
  }
}