src/index.js

		@@ -1,81 +0,3 @@
		const path = require('path')
		, fs = require('then-fs')
		, parse = require('./parse')
		, chokidar = require('chokidar')
		, MetaProxy = require('./MetaProxy')

		class Daily extends MetaProxy {
		/**
		* @description Daily constructor
		* @param { String } file_path 文件绝对路径
		*/
		constructor(file_path) {
		super();

		// 参数初始化
		this.file_path = file_path;
		this.data = null;
		}

		/**
		* @description 带缓存的 getData
		* @returns { Promise<Daily> }
		*/
		getData() {
		if (this.data) {
		return Promise.resolve(this);
		} else {
		return this.read().then(data => {
		data.file_path = this.file_path;
		this.data = data;
		return this;
		});
		}
		}

		/**
		* @description 从磁盘中读取 file_path 返回 Promise
		* @returns { Promise<Object> } 文章经过 parse 的结果
		*/
		read() {
		return fs.readFile(this.file_path)
		.then(e => e.toString())
		.then(parse)
		}

		/**
		* @description watch
		* @returns { Daily } 链式调用
		*/
		beginWatch() {
		if (this.watcher) return this;
		// 绑定 watcher
		this.watcher = chokidar.watch(this.file_path);

		// !!! 热更新
		this.watcher.on('change', path => {
		this.data = null;
		this.emit('change', this);
		});

		// 当文件被删除
		// 被动的取消绑定
		this.watcher.on('unlink', path => {
		this.endWatch();
		});

		return this;
		}

		/**
		* @description 主动取消绑定
		* @returns { Daily } 链式调用
		*/
		endWatch() {
		this.watcher.close();
		this.watcher = null;
		return this;
		}
		module.exports = {
		Daily: require('./Daily')
		}

		module.exports = Daily;

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