configfile: convert to es6 class (#57)

* configfile: convert to es6 class
* read_dir: promisify
* configfile: use simpler es6 for..in and for..of
* move declared function to callback (for this scoping)
* update Changes, meta

.codeclimate.yml

@@ -1,7 +1,7 @@
 engines:
   eslint:
     enabled: true
-    channel: "eslint-4"
+    channel: "eslint-6"
     config:
       config: ".eslintrc.yaml"
 

.github/workflows/coveralls.yml

@@ -15,10 +15,10 @@ jobs:
       with:
         fetch-depth: 1
 
-    - name: Use Node.js 10
+    - name: Use Node.js 12
       uses: actions/setup-node@master
       with:
-        version: 10.x
+        version: 12.x
 
     - name: install, run
       run: |

.github/workflows/lint.yml

@@ -30,4 +30,5 @@ jobs:
       run: npm run lint
 
       env:
-        CI: true
+        CI: true
+

Changes.md

@@ -1,6 +1,12 @@
 
 ## 1.N.NN - 20YY-MM-DD
 
+## 1.0.19 - 2019-MM-DD
+
+- configfile: convert to es6 class
+- configfile.read_dir: promisify
+- configfile: use simpler es6 `for..in` and `for..of`
+
 
 ## 1.0.18 - 2019-10-11
 

config.js

@@ -52,7 +52,9 @@ class Config {
     }
 
     getDir (name, opts, done) {
-        cfreader.read_dir(path.resolve(this.root_path, name), opts, done);
+        cfreader.read_dir(path.resolve(this.root_path, name), opts).then((files) => {
+            done(null, files)   // keep the API consistent
+        }).catch(done)
     }
 
     arrange_args (args) {