.eslintrc.json

{
  "env": {
    "browser": true,
    "es2021": true,
    "node": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:node/recommended",
    "prettier"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 12,
    "sourceType": "module"
  },
  "plugins": [
    "@typescript-eslint",
    "node",
    "prettier"
  ],
  "rules": {
    "no-console": "warn",
    "no-unused-vars": "warn",
    "@typescript-eslint/no-unused-vars": [
      "warn",
      { "argsIgnorePattern": "^_" }
    ],
    "@typescript-eslint/explicit-function-return-type": "off",
    "node/no-unsupported-features/es-syntax": [
      "error",
      { "ignores": ["modules"] }
    ],
    "prettier/prettier": [
      "error",
      {
        "endOfLine": "auto",
        "semi": true,
        "singleQuote": true,
        "printWidth": 80,
        "tabWidth": 2
      }
    ],
    "indent": ["error", 2],
    "max-len": ["error", { "code": 100 }],
    "max-lines": ["warn", { "max": 300, "skipBlankLines": true, "skipComments": true }],
    "complexity": ["warn", { "max": 10 }],
    "no-magic-numbers": ["warn", { "ignore": [0, 1] }],
    "prefer-const": "warn",
    "no-var": "error",
    "eqeqeq": ["error", "always"],
    "consistent-return": "warn",
    "no-duplicate-imports": "error",
    "no-multiple-empty-lines": ["error", { "max": 1 }],
    "arrow-spacing": ["error", { "before": true, "after": true }],
    "object-curly-spacing": ["error", "always"],
    "array-bracket-spacing": ["error", "never"],
    "space-in-parens": ["error", "never"],
    "template-curly-spacing": ["error", "never"],
    "comma-dangle": ["error", "never"]
  }
}