未知對象名稱，合併數組中相同對象 數據

var arr=[{
    "PMC MATERIAL CONTROL": 
    [{
        "userCode": "11084876",
        "userId": "OR:wt.org.WTUser:9814145",
        "userName": "陳讓香"
    }, {
        "userCode": "11003474",
        "userId": "OR:wt.org.WTUser:342317",
        "userName": "劉斌"
    }]
  },{
    "PMC MATERIAL CONTROL": 
    [{
        "userCode": "11084876",
        "userId": "OR:wt.org.WTUser:9814146",
        "userName": "陳讓香2"
    }, {
        "userCode": "11003474",
        "userId": "OR:wt.org.WTUser:342317",
        "userName": "劉斌"
    }],
    "PMC MATERIAL CONTROL2": 
    [{
        "userCode": "11003474",
        "userId": "OR:wt.org.WTUser:342317",
        "userName": "劉斌"
    }]
}]

變成

[{
    "PMC MATERIAL CONTROL": 
    [{
        "userCode": "11084876",
        "userId": "OR:wt.org.WTUser:9814145",
        "userName": "陳讓香"
    },{
        "userCode": "11084876",
        "userId": "OR:wt.org.WTUser:9814146",
        "userName": "陳讓香2"
    }, {
        "userCode": "11003474",
        "userId": "OR:wt.org.WTUser:342317",
        "userName": "劉斌"
    }],
    "PMC MATERIAL CONTROL2": 
    [{
        "userCode": "11003474",
        "userId": "OR:wt.org.WTUser:342317",
        "userName": "劉斌"
    }]
}]

===============方法================

Fun(){
    var data = this.mergeData(arr);
    console.log(data)
},
reduceFn(arr,select){
    return arr.reduce((pre,cur)=>{
        if(select.every(item=>item.userId!=cur.userId)){
            pre.push(cur)
        }
        return pre;
    },[]);
},
mergeData(arr){
    var map = {};
    for(var i in arr){
        var item= arr[i];
        for(var name in item){
            if(!map[name]){
                map[name] = item[name];
            }else{
                let difference = this.reduceFn(item[name],map[name])||{}
                map[name]=[...map[name],...difference];
            }
            
        }
    }
    return map
},