如何解决我得到的错误“方案不是构造函数”

Question

我想创建一个输入文本并将结果保存到mongoDb上的单独字段中。我收到错误消息“方案不是构造函数”如何解决

const mongoose = require('mongoose');
const profileSchema = mongoose.Schema;

const Scheme = new profileSchema({
        fullName:String,
        age:Number,
        address:String    
});

dataSchema = new Scheme({
    data : {
        type: Scheme,
        required: true
    }
});

var Profile = mongoose.model('Profile', dataSchema);

var profile = new Profile();
var error = profile.validateSync();
assert.ok(error.errors['data']);