vue非单文件组件创建一直报错

<script >
        Vue.config.productionTip = false
        const school =Vue.extend({
            template:`
            <div>
                <h2>{{name}}</h2>
                <h2>{{address}}</h2> 
            </div>
            `,
            date(){
                return{
                    name:'ssg',
                    address:'wx'
                }
            },
            
           
        })

        new Vue({
            el:'#root',
            components:{
                school,
                
            }
        })
    </script>

<div id="root">
        <school></school>
       

    </div>

是 data 不是 date