如何在Vue.js中修复'file.writeFile不是函数'

Question

我正在使用Vue.js在网页表中显示本地存储文件中的json数据。我还想通过使用来自表单的数据来更新json文件中的数据。但是我得到了上面提到的错误

import json from "../assets/data.json";
    export default{
        json,
        data(){
            return{
                title: '',
                date: new Date().toISOString().substr(0, 10),
                modal: false,
                menu2: false,
                dialog: false,
                notifications: false,
                sound: true,
                widgets: false,
                task: '',
                tasks: {},
            }
        },
        methods: {
            submit: function(){
                this.tasks = {id: json.length+1, task:this.task,date: this.date, complete: false}
                json.push(this.tasks)
                var file = require('fs')
                file.writeFile('../assets/data.json', json)
            }
            reset1(){
                this.task = '';
                this.date = new Date().toISOString().substr(0, 10);
            }
        },
        name: "Form"
    };
</script>