如何根据数组对象的值和位置嵌套数组对象组？

Question

I have an array that's structured like this:

[
  {
    "combinator": "OR"
  },
  {
    "combinator": "AND"
  },
  {
    "combinator": "AND"
  },
  {
    "combinator": "OR"
  },
  {
    "combinator": "AND"
  },
  {
    "combinator": "AND"
  }
]

I need to create another array from it that would place all the objects with combinator value of "OR at the top level, and nest all the "AND objects between two "OR" objects into an "OR" object that precedes them, in order to get something like this:

[
  {
    "combinator": "OR",
    "subarray": [
      {
        "combinator": "AND"
      },
      {
        "combinator": "AND"
      },
    ]
  },
  {
    "combinator": "OR",
    "subarray": [
      {
        "combinator": "AND"
      },
      {
        "combinator": "AND"
      },
    ]
  },
]

Does anyone know how can this be done?

Answer 1

Following assumes there is always a leading "OR" in the array and groups those that follow until a new "OR" is encountered and repeats

 const grouped = data.reduce((a,c)=>{ if(c.combinator === 'OR'){ a.push({combinator: 'OR', subarray:[]}) }else{ a[a.length-1].subarray.push(c) } return a; },[]); console.log(grouped)

 .as-console-wrapper {max-height: 100%;important:top:0}

 <script> const data=[{combinator:"OR"},{combinator:"AND"},{combinator:"AND"},{combinator:"OR"},{combinator:"AND"},{combinator:"AND"}]; </script>