无法添加属性 0，尝试将类构造的对象推入数组列表时对象不可扩展 - React/NextJs

Question

这是该函数中涉及的代码，目标是在 Material Ui 表中创建用于渲染的行。

class User {
            constructor(id, name, email, measured, offset, paidAmount, status, home, misc, plane, transport, partner, isCoupon) {
                this.id = id
                this.name = name
                this.email = email
                this.measured = measured
                this.offset = offset
                this.paidAmount = paidAmount
                this.status = status
                this.home = home
                this.misc = misc
                this.plane = plane
                this.transport = transport
                this.partner = partner
                this.isCoupon = isCoupon
    
            }
        }
    
        const mountTableRows = () => {
            rawData.map((item, index) => {
                let user = {}
                user = new User(
                    item["ulid"],
                    item["Name"],
                    item["Email"],
                    item["Emissions"],
                    item["Quantity"],
                    item["Value"],
                    item["Status"],
                    item.Rawresult["home"],
                    item.Rawresult["misc"],
                    item.Rawresult["plane"],
                    item.Rawresult["transport"],
                    item["Partner"],
                    item["isCoupon"]
                )
                usersList.push(user)
            })
            setIsListMounted(true)
        }
    
        useEffect(() => {
            if (rawData.length > 0 && !isListMounted) {
                mountTableRows()
            }
        }, [rawData])

我一直收到这个错误：

未处理的运行时错误类型错误：无法添加属性 0，对象不可扩展

源页面\dashboard\dashboard.js (124:22) @ eval

>   122 |             item["isCoupon"]   123 |         )
> > 124 |         usersList.push(user)
>       |                  ^   125 |     })   126 |     setIsListMounted(true)   127 | } 

调用堆栈 mountTableRows

pages\dashboard\dashboard.js (107:16) 评估 pages\dashboard\dashboard.js (131:12)

Answer 1

我发现了问题。

我试图在不使用 setState 函数的情况下进入一个状态

 usersList.push(user)

所以我再次阅读了我的代码并注意到我的愚蠢哈哈为了解决这个问题我只是用下面的代码替换了上面的代码

setUsersList(current=>[...current, user])