GoView 是一个低代码数据可视化开发平台，将图表或页面元素封装为基础组件，无需编写代码即可完成业务需求

const fs = require('fs') const matter = require('gray-matter') const { extend, isEmpty: _isEmpty } = require('lodash') // gray-matter is a dep for vitepress, // no need to specify that in package.json class FrontMatterService { constructor() {} /** @param {Record<string, any>} obj */ __print(obj) { console.log(JSON.stringify(obj, null, 2)) } /** @param {string} filePath */ open(filePath) { this.filePath = filePath this.file = fs.readFileSync(filePath) this.matter = matter(String(this.file)) return this } isEmpty() { return _isEmpty(this.matter.data) } /** @param{(data: string) => void} callback */ readFile(callback) { callback(String(this.file)) return this } /** @param {string} string */ show(key) { let output = flag ? this.matter[key] : this.matter this.__print(output) return this } /** * @param {string} key * @param {string} value * */ set(key, value) { this.matter.data[key] = value return this } /** @param {Record<string, any>} src */ extend(src) { extend(this.matter.data, src) return this } save() { let matterStringifyData = this.matter.stringify() fs.writeFile(this.filePath, matterStringifyData, (err) => { if (err) { console.warn(`${this.filePath} -- Saving file with matter failed !!`) return } }) } } module.exports = new FrontMatterService()