A easy way to check and fix error while your are coding in Visual Studio Code Eslint + Error Lens

ESlint

Error Lens

ESLint Configuration

Now u have to install package and config eslin file. (But this way u have to have this in every project)

Other way is using standard

$ npm i standard -D

and modify package.json

"devDependencies": {
    "standard": "16.0.3"
  },
  "eslintConfig": {
    "extends": "./node_modules/standard/eslintrc.json"
  }

And Finally could try config Eslint extesion run on save.

And aut fix format ESlint On Save. Go to Visual Studio Code user [setting.json]

"editor.codeActionsOnSave": {
        "source.fixAll": true
    }

when u SAVE this file will fix