Update build script.

build.js

@@ -1,62 +1,63 @@
-var fs      = require("fs");
-var path    = require('path');
+const fs = require('fs');
+const path = require('path');
 
 //检查指定路径的文件或者目录是否存在
-function exists(_path){
-    return fs.existsSync(_path);
+function exists(_path) {
+  return fs.existsSync(_path);
 }
 
 //判断是不是文件
-function isFile(_path){
-    return exists(_path) && fs.statSync(_path).isFile();  
-} 
+function isFile(_path) {
+  return exists(_path) && fs.statSync(_path).isFile();
+}
 
 //判断是不是目录
-function isDir(_path){
-    return exists(_path) && fs.statSync(_path).isDirectory();  
+function isDir(_path) {
+  return exists(_path) && fs.statSync(_path).isDirectory();
 }
 
-
-var path_root = process.cwd();
-var data = {};
-
-// 初始化数据
-initData(path_root)
-function initData(dirname){
-    var files = fs.readdirSync(dirname);
-    var filesArr = []
-    files.forEach(function(_filename,idx){
-        _filepath = path.join(dirname,_filename)
-        if (_filename !== '.git' && _filename !== '.github' && _filename !== 'svg' && _filename !== '.DS_Store'){
-            if(isDir(_filepath)){
-                data[_filename] = initData(_filepath);
-            }else if(isFile(_filepath)){
-                filesArr.push(_filepath.replace(path_root,'').replace('/',''))
-            }
+const path_root = process.cwd();
+const data = {};
+
+function initData(dirname) {
+  return new Promise((resolve, reject) => {
+    const files = fs.readdirSync(dirname);
+    const filesArr = []
+    files.forEach(async (_filename, idx) => {
+      _filepath = path.join(dirname, _filename)
+      if (_filename !== '.git' && _filename !== '.github' && _filename !== 'svg' && _filename !== '.DS_Store') {
+        if (isDir(_filepath)) {
+          data[_filename] = await initData(_filepath);
+        } else if (isFile(_filepath)) {
+          filesArr.push(_filepath.replace(path_root, '').replace('/', ''))
         }
-    })
-    return filesArr
+      }
+    });
+    resolve(filesArr)
+  });
 }
-// 这里没什么卵用
-fs.writeFileSync(path.join(path_root, 'data.json'), JSON.stringify(data,null,4));
 
+; (async () => {
+  await initData(path_root);
+  fs.writeFileSync(path.join(path_root, 'data.json'), JSON.stringify(data, null, 4));
 
-var html_str = fs.readFileSync(path.join(path_root,'template.html'), 'utf8');
-var UL_str = '';
 
-var svg_total = 0;
-for(var a in data){
-    UL_str += '  <h2 class="title">'+a+'</h2>\n';
-    UL_str += '  <ul>\n';
-    if(data[a].length>0){
-        svg_total += data[a].length;
-        for (var i = 0; i < data[a].length; i++) {
-            UL_str += '    <li><img src="'+data[a][i]+'" /></li>\n'
-        }
-    }
-    UL_str += '  </ul>\n';
-}
-console.log('\n => 共有' + svg_total + '个SVG文件');
+  let ulStr = '';
+  let svgTotal = 0;
 
-fs.writeFileSync(path.join(path_root, 'index.html'), html_str.replace('{{content}}',UL_str));
-console.log("\n写入文件ok!!\n");
+  Object.keys(data).forEach((keyName) => {
+    ulStr += `  <h2 class="title">${keyName}</h2>\n`;
+    ulStr += '  <ul>\n';
+    if (data[keyName].length > 0) {
+      svgTotal += data[keyName].length;
+      data[keyName].forEach((item) => {
+        ulStr += `    <li><img src="${item}" /></li>\n`;
+      });
+    }
+    ulStr += '  </ul>\n';
+  });
+  console.log('\n => 共有' + svgTotal + '个SVG文件');
+  const htmlStr = fs.readFileSync(path.join(path_root, 'template.html'), 'utf8');
+  fs.writeFileSync(path.join(path_root, 'index.html'), htmlStr.replace('{{content}}', ulStr));
+  console.log("\n写入文件ok!!\n");
+})();