code convention

src/app.js

@@ -45,19 +45,22 @@ module.exports = (config) => {
 
     const showError = (resPath, code, res) => {
         const errorPath = path.join(config['data_dir'],config['home']['error']);
-        if (fs.existsSync(errorPath))
-            render(res, errorPath, {error: code, path: resPath}, code);
-        else
-            res.sendStatus(code);
+        fs.access(errorPath, (err) => {
+            if(err)
+                res.sendStatus(code);
+            else
+                render(res, errorPath, {error: code, path: resPath}, code);
+        });
     };
 
     app.get('/', (req, res) => {
         const homePath = `${config['data_dir']}/${config['home']['index']}`;
-        if (fs.existsSync(homePath))
-            render(res, homePath, {articles: articles});
-        else {
-            showError(req.path, 404, res);
-        }
+        fs.access(homePath,(err)=>{
+            if(err)
+                showError(req.path, 404, res);
+            else
+                render(res, homePath, {articles: articles});
+        });
     });
 
     app.get('*', express.static(config['data_dir']));

src/config.js

@@ -6,7 +6,7 @@ const merge = (ref, src) => {
         return ref;
     } else if (typeof ref === 'object') {
         const out = {};
-        Object.keys(ref).forEach(key => out[key] = merge(ref[key], src[key]));
+        Object.keys(ref).forEach((key) =>out[key] = merge(ref[key], src[key]));
         return out;
     } else {
         return src;

src/file_walker.js

@@ -54,16 +54,16 @@ module.exports = (config) => {
                 if (err)
                     return cb(err);
                 const paths = fileList
-                    .map(path => path.substr(config['data_dir'].length))
-                    .filter(path => path.indexOf(config['article']['index']) === path.length - config['article']['index'].length)
-                    .map(path => path.substr(0, path.length - config['article']['index'].length))
-                    .map(path => path.match(/^\/(\d{4})\/(\d{2})\/(\d{2})\/$/))
-                    .filter(matches => matches && matches.length > 1);
+                    .map((path) =>path.substr(config['data_dir'].length))
+                    .filter((path) =>path.indexOf(config['article']['index']) === path.length - config['article']['index'].length)
+                    .map((path) =>path.substr(0, path.length - config['article']['index'].length))
+                    .map((path) =>path.match(/^\/(\d{4})\/(\d{2})\/(\d{2})\/$/))
+                    .filter((matches) =>matches && matches.length > 1);
                 if (paths.length === 0)
                     cb(null, []);
                 const list = [];
                 let remaining = 0;
-                paths.forEach(matches => {
+                paths.forEach((matches) =>{
                     const article = {
                         path: path.join(config['data_dir'], matches[1], matches[2], matches[3], config['article']['index']),
                         parent: path.join(config['data_dir'], matches[1], matches[2], matches[3]),

src/postinstall.js

@@ -18,7 +18,7 @@ if (!fs.existsSync('data')) {
 
     copy(path.join('sample_data','home'), 'data');
 
-    const pad0 = n => ('0' + n).substr(-2);
+    const pad0 = (n) =>('0' + n).substr(-2);
 
     const datetime = new Date();
     const dir = path.join('data', datetime.getFullYear().toString(), pad0(datetime.getMonth() + 1), pad0(datetime.getDate()));