Use eslint&prettier for code linting&formatting

Author: fstasi

Diff for: .eslintrc.js

@@ -0,0 +1,49 @@
+module.exports = {
+    ignorePatterns: [
+        'node_modules/*',
+        '/*',
+        '!arduino-ide-extension',
+        'arduino-ide-extension/*',
+        '!arduino-ide-extension/src',
+        'arduino-ide-extension/src/node/cli-protocol',
+    ],
+    parser: '@typescript-eslint/parser', // Specifies the ESLint parser
+    parserOptions: {
+        ecmaVersion: 2020, // Allows for the parsing of modern ECMAScript features
+        sourceType: 'module', // Allows for the use of imports
+        ecmaFeatures: {
+            jsx: true, // Allows for the parsing of JSX
+        },
+    },
+    settings: {
+        react: {
+            version: 'detect', // Tells eslint-plugin-react to automatically detect the version of React to use
+        },
+    },
+    extends: [
+        'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
+        'plugin:react/recommended', // Uses the recommended rules from @eslint-plugin-react
+        'plugin:react-hooks/recommended', // Uses recommended rules from react hooks
+        'plugin:prettier/recommended',
+        'prettier', // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
+    ],
+    plugins: ['prettier'],
+    root: true,
+    rules: {
+        '@typescript-eslint/no-unused-expressions': 'off',
+        '@typescript-eslint/no-namespace': 'off',
+        '@typescript-eslint/no-var-requires': 'off',
+        '@typescript-eslint/no-empty-function': 'warn',
+        '@typescript-eslint/no-empty-interface': 'warn',
+        'react/display-name': 'warn',
+        eqeqeq: ['error', 'smart'],
+        'guard-for-in': 'off',
+        'id-blacklist': 'off',
+        'id-match': 'off',
+        'no-underscore-dangle': 'off',
+        'no-unused-expressions': 'off',
+        'no-var': 'error',
+        radix: 'error',
+        'prettier/prettier': 'warn',
+    },
+};

Diff for: .prettierrc

@@ -0,0 +1,13 @@
+{
+	"singleQuote": true,
+	"tabWidth": 4,
+	"useTabs": false,
+	"overrides": [
+		{
+			"files": "*.{json,yml}",
+			"options": {
+				"tabWidth": 2
+			}
+		}
+	]
+}

Diff for: .vscode/settings.json

@@ -1,21 +1,9 @@
 {
-  "tslint.enable": true,
-  "tslint.configFile": "./tslint.json",
-  "editor.formatOnSave": true,
   "files.exclude": {
     "**/lib": false
   },
-  "editor.insertSpaces": true,
-  "editor.detectIndentation": false,
-  "[typescript]": {
-    "editor.tabSize": 4
+  "typescript.tsdk": "node_modules/typescript/lib",
+  "editor.codeActionsOnSave": {
+    "source.fixAll.eslint": true
   },
-  "[json]": {
-    "editor.tabSize": 2
-  },
-  "[jsonc]": {
-    "editor.tabSize": 2
-  },
-  "files.insertFinalNewline": true,
-  "typescript.tsdk": "node_modules/typescript/lib"
 }

Diff for: arduino-ide-extension/package.json

@@ -10,7 +10,7 @@
     "download-ls": "node ./scripts/download-ls.js",
     "download-examples": "node ./scripts/download-examples.js",
     "generate-protocol": "node ./scripts/generate-protocol.js",
-    "lint": "tslint -c ./tslint.json --project ./tsconfig.json",
+    "lint": "eslint",
     "build": "tsc && ncp ./src/node/cli-protocol/ ./lib/node/cli-protocol/ && yarn lint",
     "watch": "tsc -w",
     "test": "mocha \"./lib/test/**/*.test.js\"",

Diff for: arduino-ide-extension/src/browser/arduino-commands.ts

@@ -4,20 +4,18 @@ import { Command } from '@theia/core/lib/common/command';
  * @deprecated all these commands should go under contributions and have their command, menu, keybinding, and toolbar contributions.
  */
 export namespace ArduinoCommands {
-
     export const TOGGLE_COMPILE_FOR_DEBUG: Command = {
-        id: 'arduino-toggle-compile-for-debug'
+        id: 'arduino-toggle-compile-for-debug',
     };
 
     /**
      * Unlike `OPEN_SKETCH`, it opens all files from a sketch folder. (ino, cpp, etc...)
      */
     export const OPEN_SKETCH_FILES: Command = {
-        id: 'arduino-open-sketch-files'
+        id: 'arduino-open-sketch-files',
     };
 
     export const OPEN_BOARDS_DIALOG: Command = {
-        id: 'arduino-open-boards-dialog'
+        id: 'arduino-open-boards-dialog',
     };
-
 }