uniappx,类型不匹配问题

分类：uni-app x

        type _data = {  
        citemName: string;  
        cstatus: number;  
        cplanStartTime: string;  
        cplanEndTime: string;  
        creleasedQty: number;  
        clevelName: string;  
        cplanQty: number;  
        ccompletedQty: number;  
        citemNo: string;  
        clevel: string;  
        cscrapQty: number;  
        citemId: string;  
        cstatusName: string;  
        cmoCode: string;  
        citemSpec: string;  
        id: string;  
        cid: string;  
    }  

    type IRootType = {  
        total: number;  
        code: string;  
        data: _data[];  
        success: boolean;  
    }  

        data() {  
        return {  
            dataList: [] as _data[],  
            page: 1,  
            imit: 10  
        };  
    },

图1是报错内容，图2是接口返回的数据格式。代码里定义了dataList类型，请求方法也定义type类型，但还是报错。