refactor(hexo/index): async/await

lib/hexo/index.js

@@ -210,7 +210,7 @@ class Hexo {
     });
   }
 
-  init() {
+  async init() {
     this.log.debug('Hexo version: %s', chalk.magenta(this.version));
     this.log.debug('Working directory: %s', chalk.magenta(tildify(this.base_dir)));
 
@@ -224,14 +224,16 @@ class Hexo {
     require('../plugins/tag')(this);
 
     // Load config
-    return Promise.each([
+    await Promise.each([
       'update_package', // Update package.json
       'load_config', // Load config
       'load_plugins' // Load external plugins & scripts
-    ], name => require(`./${name}`)(this)).then(() => this.execFilter('after_init', null, {context: this})).then(() => {
-      // Ready to go!
-      this.emit('ready');
-    });
+    ], name => require(`./${name}`)(this));
+
+    await this.execFilter('after_init', null, { context: this });
+
+    // Ready to go!
+    return await this.emit('ready');
   }
 
   call(name, args, callback) {
@@ -438,7 +440,7 @@ class Hexo {
       });
   }
 
-  exit(err) {
+  async exit(err) {
     if (err) {
       this.log.fatal(
         {err},
@@ -447,9 +449,8 @@ class Hexo {
       );
     }
 
-    return this.execFilter('before_exit', null, {context: this}).then(() => {
-      this.emit('exit', err);
-    });
+    await this.execFilter('before_exit', null, { context: this });
+    return await this.emit('exit', err);
   }
 
   execFilter(type, data, options) {