Adding eslint.

.eslintrc.json

@@ -0,0 +1,23 @@
+{
+    "root": true,
+    "env": {
+        "browser": true,
+        "es6": true
+    },
+    "extends": [
+        "standard"
+    ],
+    "globals": {},
+    "plugins": [],
+    "ignorePatterns": ["node_modules/", "dist/", "webpack.config.js"],
+    "rules": {
+        "max-len": [
+          "error",
+          {
+            "code": 120,
+            "comments": 120
+          }
+        ],
+        "no-unused-vars": [2, {"argsIgnorePattern": "^_"}]
+    }
+}

.gitignore

@@ -1,3 +1,4 @@
 node_modules
 .cache
 dist
+.vscode

client/videowatch-client-plugin.js

@@ -1,4 +1,4 @@
-"use strict"
+'use strict'
 
 const logger = {
   log: (s) => console.log('[peertube-plugin-livechat] ' + s),
@@ -53,7 +53,7 @@ function displayButton (buttons, name, label, callback) {
 
 function displayChatButtons (peertubeHelpers, uuid) {
   logger.log('Adding buttons in the DOM...')
-  const p = new Promise((resolve, reject) => {
+  const p = new Promise((resolve) => {
     Promise.all([
       peertubeHelpers.translate('Open chat'),
       peertubeHelpers.translate('Open chat in a new window'),
@@ -81,10 +81,10 @@ function displayChatButtons (peertubeHelpers, uuid) {
 function toggleShowHideButtons (chatOpened) {
   // showing/hiding buttons...
   document.querySelectorAll('.peertube-plugin-livechat-button-open')
-    .forEach(button => button.style.display = (chatOpened === true || chatOpened === null ? 'none' : ''))
+    .forEach(button => (button.style.display = (chatOpened === true || chatOpened === null ? 'none' : '')))
 
   document.querySelectorAll('.peertube-plugin-livechat-button-close')
-    .forEach(button => button.style.display = (chatOpened === false || chatOpened === null ? 'none' : ''))
+    .forEach(button => (button.style.display = (chatOpened === false || chatOpened === null ? 'none' : '')))
 }
 
 function openChat () {
@@ -92,14 +92,14 @@ function openChat () {
     const uuid = lastUUID
     if (!uuid) {
       logger.log('No current uuid.')
-      return reject()
+      return reject(new Error('No current uuid.'))
     }
 
     logger.info('Trying to load the chat for video ' + uuid + '.')
     const iframeUri = getIframeUri(uuid)
     if (!iframeUri) {
       logger.error('Incorrect iframe uri')
-      return reject()
+      return reject(new Error('Incorrect iframe uri'))
     }
     const additionalStyles = settings['chat-style'] || ''
 
@@ -127,6 +127,7 @@ function openChat () {
 
     resolve()
   })
+  return p
 }
 
 function closeChat () {
@@ -157,7 +158,7 @@ function register ({ registerHook, peertubeHelpers }) {
         const nonLiveOn = !!settings['chat-all-non-lives']
         const uuids = parseUUIDs(settings['chat-videos-list'])
         const iframeUri = settings['chat-uri'] || ''
-        if ( iframeUri === '' ) {
+        if (iframeUri === '') {
           logger.log('no uri, can\'t add chat.')
           return
         }

main.js

@@ -1,11 +1,11 @@
 async function register ({
-  registerHook,
+  _registerHook,
   registerSetting,
-  settingsManager,
-  storageManager,
-  videoCategoryManager,
-  videoLicenceManager,
-  videoLanguageManager
+  _settingsManager,
+  _storageManager,
+  _videoCategoryManager,
+  _videoLicenceManager,
+  _videoLanguageManager
 }) {
   registerSetting({
     name: 'chat-auto-display',
@@ -63,7 +63,6 @@ async function register ({
 }
 
 async function unregister () {
-  return
 }
 
 module.exports = {

package.json

@@ -17,6 +17,11 @@
   ],
   "devDependencies": {
     "@purtuga/esm-webpack-plugin": "^1.1.1",
+    "eslint": "^7.20.0",
+    "eslint-config-standard": "^16.0.2",
+    "eslint-plugin-import": "^2.22.1",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-promise": "^4.3.1",
     "webpack": "^4.41.2",
     "webpack-cli": "^3.3.10"
   },
@@ -31,7 +36,8 @@
   "library": "./main.js",
   "scripts": {
     "prepare": "npm run build",
-    "build": "webpack --mode=production"
+    "build": "webpack --mode=production",
+    "lint": "npx eslint --ext .js ."
   },
   "staticDirs": {},
   "translations": {