vue如何把一个数组里面的数据放到另一个数组的每一项里面

    let arr = [{
        "productName": "颜色",
        "productcode": "0001",
        "productId": "a80ff169-d6f6-4752-b980-fd818240410f"
    }]

    let arr2 = [{
            "productSkuName": "美年达1",
            "productSkuCode": "10",
            "productSkuId": "46f7c6ba-b4ca-4843-b5d1-76399d1ac52a",
            "remark": ""
        },
        {
            "productSkuName": "可乐1",
            "productSkuCode": "11",
            "productSkuId": "2ea2a723-1a6c-4545-92ce-2ef07547642f",
            "remark": ""
        }
    ]
    
    arr2.forEach(item => {
        arr.map(item2 => {
            item = Object.assign(item,item2);
        })
    })
    
    console.log(arr2) 
    //[{productId: "a80ff169-d6f6-4752-b980-fd818240410f",
    // productName: "颜色",
    // productSkuCode: "10",
    // productSkuId: "46f7c6ba-b4ca-4843-b5d1-76399d1ac52a",
    // productSkuName: "美年达1",
    // productcode: "0001",
    // remark: ""},
    // {
    //     productId: "a80ff169-d6f6-4752-b980-fd818240410f",
    //     productName: "颜色",
    //     productSkuCode: "11",
    //     productSkuId: "2ea2a723-1a6c-4545-92ce-2ef07547642f",
    //     productSkuName: "可乐1",
    //     productcode: "0001",
    //     remark: ""
    // }]

arr必须是个数组吗
let newArr = [];
let mergeItem = {};
arr.forEach(item => {
mergeItem = {
...mergeItem,
...item
}
})
arr2.forEach(item => {
newArr.push({
...item,
...mergeItem
})
})