set trailingComma option to 'all'

Author: devgioele

.gitignore

@@ -0,0 +1 @@
+node_modules

index.json

@@ -1,6 +1,6 @@
 {
   "$schema": "http://json.schemastore.org/prettierrc",
-  "trailingComma": "es5",
+  "trailingComma": "all",
   "semi": false,
   "singleQuote": true
 }

package-lock.json

@@ -12,6 +12,7 @@
     "node": "^16"
   },
   "scripts": {
+    "format": "prettier -w .",
     "postversion": "git push && git push --tags"
   },
   "repository": {
@@ -28,5 +29,8 @@
     "url": "https://github.com/aboutbits/prettier-config/issues"
   },
   "homepage": "https://github.com/aboutbits/prettier-config",
-  "prettier": "./index.json"
+  "prettier": "./index.json",
+  "devDependencies": {
+    "prettier": "^3.0.0"
+  }
 }

package.json

@@ -31,7 +31,7 @@ const aboutBitsConfig = require('@aboutbits/prettier-config')
 
 module.exports = {
   ...aboutBitsConfig,
-  singleQuote: false
+  singleQuote: false,
 }
 ```