JS数组转换的操作方法?

let data = {
    listA: ['A1','A2','A3','A4','A5','A6','A7','A8','A9'],
    listB: ['B1',"B2","B3",'B4',"B5","B6","B7","B8","B9"],
    listC: ['C1',"C2","C3",'C4',"C5","C6","C7","C8","C9"]
}
let result = Object.keys(data).reduce((p,key)=>{
    for(let i = 0;i<data[key].length;i++){
        p[i] ? p[i].data.push(data[key][i]) : p[i] = {data:[data[key][i]]}
    }
    return p;
},[])