.eslintrc.json

{
    "env": {
        "browser": false,
        "es2021": true,
        "node":true
    },
    "extends": [
        "plugin:@typescript-eslint/recommended",
        "airbnb",
        "plugin:import/recommended",
        "plugin:import/typescript"
    ],
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
        "ecmaVersion": "latest",
        "sourceType": "module"
    },
    "plugins": [
        "@typescript-eslint"
    ],
    "rules": {
        // Making life easier
        "max-len": "off",
        "no-plusplus": "off",
        "import/prefer-default-export": "off",
        "prefer-regex-literals": "off",

        // Indent with 4 spaces
        "indent": ["error", 4],

        // Disable the base rule as they're replaced by TS rules to prevent errors
        "no-use-before-define": "off",
        "no-unused-vars": "off",
        "@typescript-eslint/no-use-before-define": "error",
        "@typescript-eslint/no-unused-vars": "warn",

        // Webpack resolves extensions automatically.
        "import/extensions": [
            "error",
            "ignorePackages",
            {
                "js": "never",
                "mjs": "never",
                "jsx": "never",
                "ts": "never",
                "tsx": "never"
            }
        ]
    },
    "ignorePatterns": [
        "node_modules",
        "build",
        "dist",
        "public"
      ],
      "settings": {
        "import/resolver": {
            "typescript": {} // this loads <rootdir>/tsconfig.json to eslint
          }
      }
}