add eslint check

Dockerfile

@@ -49,7 +49,7 @@ ADD web /srv/web
 RUN apk add --no-cache --update git
 RUN \
     cd /srv/web && \
-    npm i && npm run build && \
+    npm i && npm run lint && npm run build && \
     rm -rf ./node_modules
 
 

web/.eslintrc.js

@@ -0,0 +1,64 @@
+module.exports = {
+  parser: 'babel-eslint',
+  extends: 'eslint:recommended',
+  plugins: [
+    'react',
+  ],
+  env: {
+    browser: true,
+    node: true,
+    es6: true,
+  },
+  parserOptions: {
+    ecmaFeatures: {
+      modules: true,
+      jsx: true,
+    }
+  },
+  globals: {
+    remark_config: true,
+    b: true,
+  },
+  rules: {
+    'react/jsx-uses-react': 2,
+    'react/jsx-uses-vars': 2,
+    'no-unused-vars': [1, {varsIgnorePattern: '^h$'}],
+    'no-cond-assign': 1,
+    'no-empty': 0,
+    'no-console': 1,
+    semi: 2,
+    camelcase: 0,
+    'comma-style': 2,
+    indent: [2, 2, {SwitchCase: 1}],
+    'no-mixed-spaces-and-tabs': [2, 'smart-tabs'],
+    'no-trailing-spaces': [2, {skipBlankLines: true}],
+    'max-nested-callbacks': [2, 3],
+    'no-eval': 2,
+    'no-implied-eval': 2,
+    'no-new-func': 2,
+    'guard-for-in': 0,
+    eqeqeq: 0,
+    'no-else-return': 2,
+    'no-redeclare': 2,
+    'no-dupe-keys': 2,
+    radix: 2,
+    strict: [2, 'never'],
+    'no-shadow': 0,
+    'callback-return': [1, ['callback', 'cb', 'next', 'done']],
+    'no-delete-var': 2,
+    'no-undef-init': 2,
+    'no-shadow-restricted-names': 2,
+    'handle-callback-err': 0,
+    'no-lonely-if': 2,
+    'keyword-spacing': 2,
+    'constructor-super': 2,
+    'no-this-before-super': 2,
+    'no-dupe-class-members': 2,
+    'no-const-assign': 2,
+    'prefer-spread': 2,
+    'no-useless-concat': 2,
+    'no-var': 2,
+    'object-shorthand': 2,
+    'prefer-arrow-callback': 2,
+  },
+};

web/app/common/api.js

@@ -1,6 +1,6 @@
 import { siteId, url } from './settings';
 
-import fetcher from './fetcher'
+import fetcher from './fetcher';
 
 // TODO: rename actions
 
@@ -22,7 +22,7 @@ export const counts = ({ urls, siteId }) => fetcher.post({
 
 export const getComment = ({ id }) => fetcher.get(`/id/${id}?url=${url}`);
 
-export const getUserComments = ({ user, limit }) => fetcher.get(`/comments?user=${user}&limit=${limit}`)
+export const getUserComments = ({ user, limit }) => fetcher.get(`/comments?user=${user}&limit=${limit}`);
 
 export const vote = ({ id, url, value }) => fetcher.put({
   url: `/vote/${id}?url=${url}&vote=${value}`,

web/app/common/fetcher.js

@@ -44,7 +44,7 @@ methods.forEach(method => {
         .then(res => resolve(res.data))
         .catch(error => reject(error));
     });
-  }
+  };
 });
 
 export default fetcher;

web/app/common/polyfills.js

@@ -4,7 +4,7 @@ if (!Element.prototype.matches)
 
 if (!Element.prototype.closest)
   Element.prototype.closest = function(s) {
-    var el = this;
+    let el = this;
     if (!document.documentElement.contains(el)) return null;
     do {
       if (el.matches(s)) return el;

web/app/common/store.js

@@ -50,7 +50,7 @@ class Store {
       again = false;
 
       return root;
-    }
+    };
 
     const paste = (root, commentObj) => {
       if (!again) return root;
@@ -63,10 +63,9 @@ class Store {
         root.replies = root.replies.map(reply => {
           if (reply.comment.id === commentObj.comment.pid) {
             return concatReply(reply, commentObj);
-          } else {
-            return paste(reply, commentObj);
           }
-        })
+          return paste(reply, commentObj);
+        });
       }
 
       return root;

web/app/components/auth-panel/auth-panel.jsx

@@ -24,9 +24,7 @@ export default class AuthPanel extends Component {
   toggleBlockedVisibility() {
     if (!this.state.isBlockedVisible) {
       if (this.props.onBlockedUsersShow) this.props.onBlockedUsersShow();
-    } else {
-      if (this.props.onBlockedUsersHide) this.props.onBlockedUsersHide();
-    }
+    } else if (this.props.onBlockedUsersHide) this.props.onBlockedUsersHide();
 
     this.setState({ isBlockedVisible: !this.state.isBlockedVisible });
   }
@@ -70,7 +68,7 @@ export default class AuthPanel extends Component {
                         onClick={() => props.onSignIn(provider)}
                       >{PROVIDER_NAMES[provider]}</span>
                     </span>
-                  )
+                  );
                 })
               }
               {'.'}

web/app/components/blocked-users/blocked-users.jsx

@@ -1,6 +1,6 @@
 import { h, Component } from 'preact';
 
-import api from 'common/api'
+import api from 'common/api';
 
 export default class BlockedUsers extends Component {
   constructor(props) {
@@ -8,7 +8,7 @@ export default class BlockedUsers extends Component {
 
     this.state = {
       unblockedUsers: [],
-    }
+    };
   }
 
   block(user) {
@@ -73,7 +73,7 @@ export default class BlockedUsers extends Component {
                         )
                       }
                     </li>
-                  )
+                  );
                 })
               }
             </ul>

web/app/components/comment/comment.jsx

@@ -331,8 +331,8 @@ export default class Comment extends Component {
               ? 'This user was blocked'
               : (
                 deleted
-                ? 'This comment was deleted'
-                : data.text
+                  ? 'This comment was deleted'
+                  : data.text
               )
           ),
       time: formatTime(new Date(data.time)),

web/app/components/root/root.jsx

@@ -22,7 +22,7 @@ export default class Root extends Component {
 
     try {
       sort = localStorage.getItem(LS_SORT_KEY) || DEFAULT_SORT;
-    } catch(e) {
+    } catch (e) {
       sort = DEFAULT_SORT;
     }
 
@@ -117,7 +117,7 @@ export default class Root extends Component {
             store.set('user', user);
             this.setState({ user });
           })
-          .catch(() => {}) // TODO: we need to handle it and write error to user
+          .catch(() => {}); // TODO: we need to handle it and write error to user
       }
     }, checkMsDelay);
   }
@@ -178,7 +178,7 @@ export default class Root extends Component {
     });
   }
 
-  render({}, { config = {}, comments = [], user, sort, isLoaded, isBlockedVisible, isCommentsListLoading, bannedUsers, commentsShown }) {
+  render(props, { config = {}, comments = [], user, sort, isLoaded, isBlockedVisible, isCommentsListLoading, bannedUsers, commentsShown }) {
     if (!isLoaded) {
       return (
         <div id={NODE_ID}>

web/app/counter.js

@@ -1,4 +1,4 @@
-import { COUNTER_NODE_CLASSNAME } from './common/constants'
+import { COUNTER_NODE_CLASSNAME } from './common/constants';
 
 import api from 'common/api';
 
@@ -17,7 +17,7 @@ function init() {
   }
 
   try {
-    remark_config = remark_config || {}
+    remark_config = remark_config || {};
   } catch (e) {
     console.error('Remark42: Config object is undefined.');
     return;

web/app/embed.js

@@ -15,7 +15,7 @@ function init() {
   }
 
   try {
-    remark_config = remark_config || {}
+    remark_config = remark_config || {};
   } catch (e) {
     console.error('Remark42: Config object is undefined.');
     return;

web/app/last-comments.js

@@ -1,6 +1,6 @@
 import { h, render } from 'preact';
 
-import { BASE_URL, DEFAULT_LAST_COMMENTS_MAX, LAST_COMMENTS_NODE_CLASSNAME } from './common/constants'
+import { BASE_URL, DEFAULT_LAST_COMMENTS_MAX, LAST_COMMENTS_NODE_CLASSNAME } from './common/constants';
 
 import api from 'common/api';
 
@@ -21,7 +21,7 @@ function init() {
   }
 
   try {
-    remark_config = remark_config || {}
+    remark_config = remark_config || {};
   } catch (e) {
     console.error('Remark42: Config object is undefined.');
     return;
@@ -42,7 +42,7 @@ function init() {
     api.last({ max, siteId: remark_config.site_id })
       .then(comments => {
         try {
-          render(<ListComments comments={comments}/>, node)
+          render(<ListComments comments={comments}/>, node);
         } catch (e) {
           console.error('Remark42: Something went wrong with last comments rendering');
           console.error(e);

web/package.json

@@ -4,11 +4,13 @@
   "scripts": {
     "build": "NODE_ENV=production webpack --config ./webpack.config.js",
     "start": "webpack-dev-server --progress --hot --inline --config ./webpack.config.js",
-    "reinstall": "rm -rf ./node_modules/ && npm install"
+    "reinstall": "rm -rf ./node_modules/ && npm install",
+    "lint": "eslint --ext=.js,.jsx ."
   },
   "devDependencies": {
     "autoprefixer": "^7.1.1",
     "babel-core": "^6.24.1",
+    "babel-eslint": "^8.2.4",
     "babel-loader": "^7.0.0",
     "babel-plugin-transform-object-rest-spread": "^6.26.0",
     "babel-plugin-transform-react-jsx": "^6.24.1",
@@ -16,6 +18,8 @@
     "clean-webpack-plugin": "^0.1.16",
     "copy-webpack-plugin": "^4.5.1",
     "css-loader": "^0.28.0",
+    "eslint": "^4.19.1",
+    "eslint-plugin-react": "^7.9.1",
     "extract-text-webpack-plugin": "^3.0.0",
     "file-loader": "^0.11.1",
     "html-webpack-plugin": "^2.30.1",