chore: add prettier

npm install --save-dev prettier
add prettier script into package.json
npm run prettier

Author: rosko

.editorconfig

@@ -4,7 +4,7 @@ root = true
 [*.js]
 charset = utf-8
 end_of_line = lf
-indent_size = 4
+indent_size = 2
 indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true

.prettierrc

@@ -0,0 +1,18 @@
+{
+  "semi": true,
+  "singleQuote": true,
+  "overrides": [
+    {
+      "files": "*-test.js",
+      "options": {
+        "semi": false
+      }
+    },
+    {
+      "files": ".prettierrc",
+      "options": {
+        "parser": "json"
+      }
+    }
+  ]
+}

nwb.config.js

@@ -1,3 +1,3 @@
 module.exports = {
   type: 'react-app'
-}
+};