Eslint and Prettier configuration for JavaScript VSCode

.eslintrc

module.exports = {
    
    "env": {
        "mocha": true
    },
    "extends":[ 
        "airbnb-base",
        "prettier"
        ],
        "plugins": [   
            "import",        
            "prettier"  
          ],
        "rules": {
           "prettier/prettier": "error",
           "linebreak-style": ["error", "windows"],
           "no-console": 0,
           "radix": 0,
           "no-param-reassign": 0
           
        },
        "overrides": [
            {
                "files": ["*.spec.js", "*.test.js"],
                "rules": {
                    "no-unused-expressions": 0
                }
            }
        ]
   
  
};

README.md

Ensure eslint is installed globally

Install vscode extension eslint.

Install dependencies

{
 "devDependencies": {     
    "eslint": "^5.6.0",
    "eslint-config-airbnb-base": "^13.1.0",
    "eslint-config-prettier": "^3.1.0",
    "eslint-plugin-import": "^2.14.0",
    "eslint-plugin-prettier": "^2.6.2",
    "mocha": "^5.2.0",
    "prettier": "^1.14.3"    
}
}

eslint --init

ensure eslint user settings are configured

> NB. Do not enable the prettier extension for VSCode this can cause conflicts with eslint

EXAMPLE CODE

{
    "[javascript]": {
        "editor.formatOnSave": false
    },
     "eslint.autoFixOnSave": true,
     "editor.formatOnSave": true,
     "eslint.alwaysShowStatus": true
}

the .eslintrc file included here also contains overrides for testing conflicts

EXAMPLE CODE

   "env": {
        "mocha": true
    }, 
    "overrides": [
            {
                "files": ["*.spec.js", "*.test.js"],
                "rules": {
                    "no-unused-expressions": 0
                }
            }
        ]
    

package.json

{
  "name": "test_server",
  "version": "0.0.1",
  "description": "node http server to serve static files when running tests.",
  "main": "index.js",
  "scripts": {
    "test": "mocha --exit",
    "start": "nodemon index.js"
  },
  "keywords": [
    "test",
    "testing",
    "server",
    "static",
    "serve",
    "http",
    "createServer"
  ],
  "author": {
    "name": "Jason Williams",
    "email": "[email protected]",
    "url": "http://letuscode.co.uk"
  },
  "license": "ISC",
  "devDependencies": { 
    "eslint": "^5.6.0",
    "eslint-config-airbnb-base": "^13.1.0",
    "eslint-config-prettier": "^3.1.0",
    "eslint-plugin-import": "^2.14.0",
    "eslint-plugin-prettier": "^2.6.2",   
    "prettier": "^1.14.3"
    
  }
}