.eslintrc.json

{
  "root": true,
  "extends": [
    "ivory/eslint",
    "ivory/eslint-comments",
    "ivory/import",
    "ivory/unicorn",
    "ivory/promise"
  ],
  "parserOptions": {
    "sourceType": "module"
  },
  "env": {
    "es2018": true,
    "commonjs": true
  },
  "rules": {
    "import/no-unused-modules": "off"
  },
  "overrides": [
    {
      "files": ["*.ts", "*.tsx"],
      "extends": ["ivory/typescript"],
      "parserOptions": {
        "sourceType": "module",
        "project": "./tsconfig.json"
      },
      "env": {
        "node": true
      },
      "rules": {
        "@typescript-eslint/prefer-readonly-parameter-types": "off",
        "@typescript-eslint/sort-type-union-intersection-members": "off"
      },
      "settings": {
        "import/parsers": {
          "@typescript-eslint/parser": [".ts", ".tsx", ".d.ts"]
        },
        "import/resolver": {
          "typescript": {
            "alwaysTryTypes": true
          },
          "node": {
            "extensions": [".js", ".jsx", ".json", ".ts", ".tsx", ".d.ts"]
          }
        },
        "import/extensions": [".js", ".jsx", ".ts", ".tsx", ".d.ts"],
        "import/external-module-folders": [
          "node_modules",
          "node_modules/@types"
        ]
      }
    },
    {
      "files": ["*.test.js", "*.test.jsx", "*.test.ts", "*.test.tsx"],
      "extends": ["ivory/jest"]
    }
  ]
}