{
  "context": "This criteria evaluates how effectively an engineer uses the better-scroll library's pull-down plugin to implement pull-to-refresh functionality. The evaluation focuses on proper BScroll instantiation, pull-down plugin registration, threshold configuration, event handling with the pullingDown event, completion handling with finishPullDown(), programmatic triggering, and resource cleanup.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "BScroll instantiation",
      "description": "Creates a BScroll instance with the correct wrapper and content element structure",
      "max_score": 15
    },
    {
      "name": "Pull-down plugin usage",
      "description": "Uses BScroll.use() to register the pull-down plugin (or imports from the full better-scroll package that includes plugins)",
      "max_score": 15
    },
    {
      "name": "Threshold configuration",
      "description": "Configures the pullDownRefresh option with a threshold property set to 50 pixels as specified in the requirements",
      "max_score": 15
    },
    {
      "name": "pullingDown event handler",
      "description": "Registers an event listener for the 'pullingDown' event to handle refresh logic",
      "max_score": 20
    },
    {
      "name": "finishPullDown() call",
      "description": "Calls finishPullDown() method after loading completes to close the pull-down indicator",
      "max_score": 20
    },
    {
      "name": "Programmatic refresh",
      "description": "Implements programmatic refresh using autoPullDownRefresh() method or equivalent",
      "max_score": 10
    },
    {
      "name": "Instance cleanup",
      "description": "Calls destroy() method to properly clean up the BScroll instance when needed",
      "max_score": 5
    }
  ]
}