WIP: refactor with eslint support

.eslintignore

@@ -0,0 +1,3 @@
+node_modules/
+coverage/
+tmp/

.eslintrc

@@ -0,0 +1,4 @@
+{
+  "extends": "hexo",
+  "root": true
+}

.github/dependabot.yml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+- package-ecosystem: npm
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 20

.github/workflows/linter.yml

@@ -0,0 +1,27 @@
+name: Linter
+
+on: [push, pull_request]
+
+jobs:
+  linter:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js 14.x
+        uses: actions/setup-node@v2
+        with:
+          node-version: '14.x'
+      - name: Cache NPM dependencies
+        uses: actions/cache@v2
+        with:
+          path: node_modules
+          key: ${{ runner.OS }}-npm-cache
+          restore-keys: |
+            ${{ runner.OS }}-npm-cache
+      - name: Install Dependencies
+        run: npm install
+      - name: Lint
+        run: |
+          npm run eslint
+        env:
+          CI: true

index.js

@@ -1,50 +1,54 @@
+/* global hexo */
+
 'use strict';
-var renderer = require('./lib/renderer');
-var assign = require('object-assign');
-var read_info = require('./lib/read-info');
-var emacs = require('./lib/emacs');
 
-var fs = require('fs');
-var path = require('path');
+const renderer = require('./lib/renderer');
+const assign = require('object-assign');
+const read_info = require('./lib/read-info');
+const emacs = require('./lib/emacs');
+
+const fs = require('fs');
+const path = require('path');
 
 // for detect if we use `hexo s'
-var server_mode = false;
-var emacs_server_start = false;
+let server_mode = false;
+let emacs_server_start = false;
 
 // Init option
 hexo.config.org = assign({
   emacs: 'emacs',
-  emacsclient: 'emacsclient',   // user should not setup this if renderer work correctly
+  emacsclient: 'emacsclient', // user should not setup this if renderer work correctly
   common: '#+OPTIONS: toc:nil num:nil\n#+BIND: org-html-postamble nil',
-  export_cfg: "(progn (package-initialize)(require 'org) (require 'org-clock) (require 'ox))", // FIXME: why not remove this ?
+  export_cfg: '(progn (package-initialize)(require \'org) (require \'org-clock) (require \'ox))', // FIXME: why not remove this ?
   cachedir: './hexo-org-cache/',
-  clean_cache: false,            // enable this to make 'hexo clean' also clean the cache
+  clean_cache: false, // enable this to make 'hexo clean' also clean the cache
   theme: '',
   user_config: '',
   htmlize: false,
   line_number: false,
-  daemonize: true,              // set false to disable use emacs server
+  daemonize: true, // set false to disable use emacs server
   debug: false
 }, hexo.config.org);
 
-hexo.on('ready', function() {
+hexo.on('ready', () => {
   // detect if current is execute for server, we have different method to handle emacs server exit.
   // some people may use 'hexo generate --watch' or 'hexo generate -w', which we also need to keep emacs server exist
   server_mode = process.argv.indexOf('server') > 0 || process.argv.indexOf('s') > 0 || process.argv.indexOf('--watch') > 0 || process.argv.indexOf('-w') > 0;
 
   // detect if we are going to clear all cache file (the 'cachedir/emacs.d' will not remove )
-  if(process.argv.indexOf('clean') > 0 ) {
-    var dir = hexo.config.org.cachedir;
+  if (process.argv.indexOf('clean') > 0) {
+    const dir = hexo.config.org.cachedir;
     if (fs.existsSync(dir) && hexo.config.org.clean_cache) {
-      var files = fs.readdirSync(dir);
-      files.forEach(function (filename) {
-        var fullname = path.join(dir, filename);
-        var stats = fs.statSync(fullname);
-        if (!stats.isDirectory())
-          fs.unlink(fullname, (err) => {
+      const files = fs.readdirSync(dir);
+      files.forEach(filename => {
+        const fullname = path.join(dir, filename);
+        const stats = fs.statSync(fullname);
+        if (!stats.isDirectory()) {
+          fs.unlink(fullname, err => {
             if (err) throw err;
-            console.log(fullname + " was deleted");
+            console.log(fullname + ' was deleted');
           });
+        }
       });
     }
   }
@@ -64,15 +68,16 @@ hexo.on('ready', function() {
 });
 
 // When time to exit hexo, kill emacs process
-hexo.on('exit', function(err) {
+hexo.on('exit', err => {
   // If use `hexo server`, the hexo will first enter `.on(exit)` event then start the server.
   // that's why we skip emacs.server.stop() when first etner here with server mode.
   if (server_mode) {
     server_mode = false;
     return;
   }
-  if (emacs_server_start)
+  if (emacs_server_start) {
     emacs.server.stop(hexo);
+  }
 });
 
 hexo.extend.renderer.register('org', 'html', renderer.bind(hexo), false);