.eslintrc

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "plugins": [
    "prettier",
    "simple-import-sort",
    "@typescript-eslint"
  ],
  "parser": "@typescript-eslint/parser",
  "env": {
    "node": true,
    "es6": true
  },
  "rules": {
    "no-dupe-class-members": "off",
    "no-restricted-syntax": [
      "error",
      {
        "selector": "ExportDefaultDeclaration",
        "message": "'export default' is not allowed"
      }
    ],
    "prettier/prettier": [
      "error",
      {
        "printWidth": 120,
        "singleQuote": true,
        "semi": false,
        "trailingComma": "none",
        "arrowParens": "avoid"
      }
    ],
    "simple-import-sort/imports": "error",
    "simple-import-sort/exports": "error"
  },
  "overrides": [
    {
      "files": [
        "*.ts"
      ],
      "extends": [
        "plugin:@typescript-eslint/recommended"
      ],
      "parserOptions": {
        "project": [
          "./tsconfig.json"
        ]
      },
      "rules": {
        "@typescript-eslint/explicit-function-return-type": [
          "error",
          {
            "allowExpressions": true
          }
        ],
        "@typescript-eslint/explicit-member-accessibility": "error",
        "@typescript-eslint/no-extra-non-null-assertion": "error",
        "@typescript-eslint/no-floating-promises": "error",
        "@typescript-eslint/no-non-null-asserted-optional-chain": "error",
        "@typescript-eslint/no-require-imports": "error",
        "@typescript-eslint/no-throw-literal": "error",
        "@typescript-eslint/ban-ts-comment": "warn",
        "@typescript-eslint/restrict-plus-operands": "warn",
        "@typescript-eslint/no-dupe-class-members": "error",
        "@typescript-eslint/await-thenable": "error",
        "@typescript-eslint/member-ordering": "warn"
      }
    }
  ]
}