Add prettier.js to project

package.json

@@ -35,6 +35,7 @@
     "jest-serializer-vue": "^2.0.2",
     "node-sass": "^4.9.2",
     "parcel-bundler": "^1.10.3",
+    "prettier": "^1.16.1",
     "vue-template-compiler": "2.5.15"
   },
   "browserslist": [

prettier.config.json

@@ -0,0 +1,5 @@
+{
+  "trailingComma": "es5",
+  "semi": false,
+  "singleQuote": true
+}

script/format

@@ -4,6 +4,8 @@ FILES_TO_FORMAT="atst/ tests/ app.py script/"
 
 if [ "$1" == "check" ]; then
   pipenv run black --check ${FILES_TO_FORMAT}
+  yarn run prettier --check "js/**/*.js" --config ./prettier.config.json
 else
   pipenv run black ${FILES_TO_FORMAT}
+  yarn run prettier --write "js/**/*.js" --config ./prettier.config.json
 fi

yarn.lock

@@ -6755,6 +6755,11 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
+prettier@^1.16.1:
+  version "1.16.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.16.1.tgz#534c2c9d7853f8845e5e078384e71973bd74089f"
+  integrity sha512-XXUITwIkGb3CPJ2hforHah/zTINRyie5006Jd2HKy2qz7snEJXl0KLfsJZW/wst9g6R2rFvqba3VpNYdu1hDcA==
+
 pretty-format@^23.6.0:
   version "23.6.0"
   resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-23.6.0.tgz#5eaac8eeb6b33b987b7fe6097ea6a8a146ab5760"