.eslintrc.json

{
  "root": true,
  "env": {
    "browser": true,
    "node": true,
    "jquery": true,
    "jest": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "prettier"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2020,
    "sourceType": "module"
  },
  "plugins": ["@typescript-eslint", "prettier"],
  "rules": {
    "no-undef": "off",
    "prettier/prettier": [
      "error",
      {
        "endOfLine": "auto",
        "singleQuote": true,
        "tabWidth": 2,
        "semi": false,
        "trailingComma": "none",
        "printWidth": 80,
        "twigPrintWidth": 80,
        "twigAlwaysBreakObjects": false,
        "arrowParens": "avoid",
        "overrides": [
          {
            "files": "*.css",
            "options": {
              "singleQuote": false
            }
          }
        ],
        "twigMultiTags": [
          "nav,endnav",
          "switch,case,default,endswitch",
          "ifchildren,endifchildren",
          "cache,endcache",
          "tag,endtag"
        ],
        "plugins": ["./node_modules/prettier-plugin-twig-melody"]
      }
    ]
  }
}