Added circleci config and eslint

.circleci/config.yml

+# Javascript Node CircleCI 2.0 configuration file
+#
+# Check https://circleci.com/docs/2.0/language-javascript/ for more details
+#
+version: 2
+jobs:
+  remixd:
+    docker:
+      # specify the version you desire here
+      - image: circleci/node:9.11.2
+
+      # Specify service dependencies here if necessary
+      # CircleCI maintains a library of pre-built images
+      # documented at https://circleci.com/docs/2.0/circleci-images/
+      # - image: circleci/mongo:3.4.4
+    environment:
+      - COMMIT_AUTHOR_EMAIL: "yann@ethereum.org"
+      - COMMIT_AUTHOR: "Circle CI"
+      - FILES_TO_PACKAGE: "package.json"
+    working_directory: ~/remixd
+
+    steps:
+      - checkout
+      - run: npm install
+      - run: npm run lint
+      - run: npm run test
+
+workflows:
+  version: 2
+  build_all:
+    jobs:
+      - remixd

.eslintrc.json

+{
+    "env": {
+        "browser": true,
+        "commonjs": true,
+        "es6": true
+    },
+    "extends": [
+        "standard"
+    ],
+    "globals": {
+        "Atomics": "readonly",
+        "SharedArrayBuffer": "readonly"
+    },
+    "parserOptions": {
+        "ecmaVersion": 2018
+    },
+    "rules": {
+        "standard/no-callback-literal": 0
+    }
+}
\ No newline at end of file

package.json

@@ -7,11 +7,12 @@
     "remixd": "./bin/remixd"
   },
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
+    "test": "echo \"Error: no test specified\"",
     "start": "./bin/remixd",
     "npip": "npip",
     "install-python-deps": "npip install",
-    "prepublish": "npm run install-python-deps"
+    "prepublish": "npm run install-python-deps",
+    "lint": "eslint ./src"
   },
   "repository": {
     "type": "git",
@@ -46,5 +47,13 @@
     "dependencies": {
       "vyper": ">=0.1.0b3"
     }
+  },
+  "devDependencies": {
+    "eslint": "6.8.0",
+    "eslint-config-standard": "14.1.1",
+    "eslint-plugin-import": "2.20.2",
+    "eslint-plugin-node": "11.1.0",
+    "eslint-plugin-promise": "4.2.1",
+    "eslint-plugin-standard": "4.0.1"
   }
 }

src/router.js

@@ -7,6 +7,7 @@ class Router {
     this.service = service
     this.initCallback = initCallback
   }
+
   start () {
     var websocket = new Websocket(this.port, this.opt)
     this.websocket = websocket

src/services/sharedFolder.js

@@ -52,11 +52,11 @@ module.exports = {
     isbinaryfile(path, (error, isBinary) => {
       if (error) console.log(error)
       if (isBinary) {
-        cb(null, {content: '<binary content not displayed>', readonly: true})
+        cb(null, { content: '<binary content not displayed>', readonly: true })
       } else {
         fs.readFile(path, 'utf8', (error, data) => {
           if (error) console.log(error)
-          cb(error, {content: data, readonly: false})
+          cb(error, { content: data, readonly: false })
         })
       }
     })
@@ -131,7 +131,7 @@ module.exports = {
 
   setupNotifications: function (path) {
     if (!isRealPath(path)) return
-    var watcher = chokidar.watch(path, {depth: 0, ignorePermissionErrors: true})
+    var watcher = chokidar.watch(path, { depth: 0, ignorePermissionErrors: true })
     console.log('setup notifications for ' + path)
     /* we can't listen on created file / folder
     watcher.on('add', (f, stat) => {
@@ -173,5 +173,5 @@ function isRealPath (path, cb) {
 }
 
 function message (name, value) {
-  return JSON.stringify({type: 'notification', scope: 'sharedfolder', name: name, value: value})
+  return JSON.stringify({ type: 'notification', scope: 'sharedfolder', name: name, value: value })
 }

src/websocket.js

@@ -24,7 +24,7 @@ class WebSocket {
       httpServer: this.server,
       autoAcceptConnections: false,
       maxReceivedFrameSize: 131072,
-      maxReceivedMessageSize: 10 * 1024 * 1024,
+      maxReceivedMessageSize: 10 * 1024 * 1024
     })
 
     this.wsServer.on('request', (request) => {