added eslint prettier check to travis (#5701)

- "yarn eslint" will throw the error if there are any formatting issues
- "yarn format" will format the js file based on the project's
prettier configuration.

.travis.yml

@@ -25,7 +25,7 @@ script:
 - make test GOFLAGS="-timeout 15m -race -v"
 - make coverage
 - node --version
-- cd browser && yarn && yarn test && cd ..
+- cd browser && yarn && yarn eslint && yarn test && cd ..
 
 after_success:
 - bash <(curl -s https://codecov.io/bash)

browser/.esformatter

@@ -1,23 +0,0 @@
-{
-  "plugins": [
-    "esformatter-jsx"
-  ],
-  // Copied from https://github.com/royriojas/esformatter-jsx
-  "jsx": {
-    "formatJSX": true, //Duh! that's the default
-    "attrsOnSameLineAsTag": false, // move each attribute to its own line
-    "maxAttrsOnTag": 3, // if lower or equal than 3 attributes, they will be kept on a single line
-    "firstAttributeOnSameLine": true, // keep the first attribute in the same line as the tag
-    "formatJSXExpressions": true, // default true, if false jsxExpressions won't be recursively formatted
-    "JSXExpressionsSingleLine": true, // default true, if false the JSXExpressions might span several lines
-    "alignWithFirstAttribute": false, // do not align attributes with the first tag
-    "spaceInJSXExpressionContainers": " ", // default to one space. Make it empty if you don't like spaces between JSXExpressionContainers
-    "removeSpaceBeforeClosingJSX": false, // default false. if true <React.Something /> => <React.Something/>
-    "closingTagOnNewLine": false, // default false. if true attributes on multiple lines will close the tag on a new line
-    "JSXAttributeQuotes": "", // possible values "single" or "double". Leave it as empty string if you don't want to modify the attributes' quotes
-    "htmlOptions": {
-      // put here the options for js-beautify.html
-    }
-  }
-}
-

browser/.eslintrc.json

@@ -0,0 +1,9 @@
+{
+  "parser": "babel-eslint",
+  "plugins": [
+    "prettier"
+  ],
+  "rules": {
+    "prettier/prettier": "error"
+  }
+}

browser/.gitignore

@@ -18,3 +18,4 @@ release
 coverage.txt
 node_modules
 production
+yarn-error.log

browser/app/index.js

@@ -36,7 +36,7 @@ ReactDOM.render(
       <App />
     </Router>
   </Provider>,
-  document.getElementById("root"),
+  document.getElementById("root")
 )
 
 hideLoader()

browser/app/js/uploads/UploadModal.js

@@ -58,7 +58,11 @@ export class UploadModal extends React.Component {
 
     return (
       <div className="alert alert-info alert--upload animated fadeInUp ">
-        <button type="button" className="close close--alt" onClick={showAbortModal}></button>
+        <button
+          type="button"
+          className="close close--alt"
+          onClick={showAbortModal}
+        />
         <div>{text}</div>
         <ProgressBar now={percent} />
         <div>

browser/package.json

@@ -7,7 +7,8 @@
     "dev": "NODE_ENV=dev webpack-dev-server --devtool cheap-module-eval-source-map --progress --colors --hot --content-base dev",
     "build": "NODE_ENV=dev node build.js",
     "release": "NODE_ENV=production MINIO_UI_BUILD=RELEASE node build.js",
-    "format": "esformatter -i 'app/**/*.js'"
+    "format": "prettier --write 'app/**/*.js'",
+    "eslint": "eslint 'app/**/*.js'"
   },
   "jest": {
     "setupTestFrameworkScriptFile": "./app/js/jest/setup.js",
@@ -31,6 +32,7 @@
     "async": "^1.5.2",
     "babel-cli": "^6.14.0",
     "babel-core": "^6.14.0",
+    "babel-eslint": "^8.2.2",
     "babel-jest": "^22.1.0",
     "babel-loader": "^7.1.2",
     "babel-plugin-syntax-object-rest-spread": "^6.13.0",
@@ -43,15 +45,15 @@
     "css-loader": "^0.23.1",
     "enzyme": "^3.3.0",
     "enzyme-adapter-react-16": "^1.1.1",
-    "esformatter": "^0.10.0",
-    "esformatter-jsx": "^7.4.1",
-    "esformatter-jsx-ignore": "^1.0.6",
+    "eslint": "^4.19.1",
+    "eslint-plugin-prettier": "^2.6.0",
     "html-webpack-plugin": "^2.30.1",
     "jest": "^22.1.4",
     "jest-enzyme": "^4.0.2",
     "json-loader": "^0.5.4",
     "less": "^2.7.1",
     "less-loader": "^2.2.3",
+    "prettier": "^1.11.1",
     "purifycss-webpack-plugin": "^2.0.3",
     "style-loader": "^0.13.1",
     "url-loader": "^0.5.7",