.eslintrc

{
  "env": {
    "es2021": true,
    "node": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "@spotify/eslint-config-base"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 12,
    "sourceType": "module"
  },
  "plugins": ["prettier", "@typescript-eslint"],
  "rules": {
    // Typebox use cap for its functions
    "new-cap": "off",
    "arrow-body-style": "warn",

    // lot of api response not using camel case
    "camelcase": "off",
    "no-nested-ternary": "off",
    "consistent-return": "off",

    // use prettier for code style
    "comma-dangle": "off",
    "semi": "off",
    "no-extra-semi": "off",
    "indent": "off",
    "@typescript-eslint/no-extra-semi": "off",
    "no-spaced-func": "off",
    "prettier/prettier": "error",
    "comma-spacing": "off",

    // use typescript-eslint rule instead
    "no-use-before-define": "off",
    "no-unused-vars": "off",
    "@typescript-eslint/no-unused-vars": "error",
    "no-shadow": "off",
    "@typescript-eslint/no-shadow": "error",
    "no-useless-constructor": "off",
    "@typescript-eslint/no-useless-constructor": "error",

    // custom rules
    "max-depth": ["error", 3],
    "max-lines": [
      "error",
      { "max": 500, "skipBlankLines": true, "skipComments": true }
    ],
    // should use `String(var)` instead of `'' + var` for type convert
    "no-implicit-coercion": "error",
    "no-shadow-restricted-names": "error",
    "prefer-arrow-callback": "error",
    // do not use `let` unless need to reassign
    "prefer-const": "error",
    // must add new line between statement
    "padding-line-between-statements": [
      "error",
      {
        "blankLine": "always",
        "prev": [
          "block",
          "block-like",
          "cjs-export",
          "class",
          "export",
          "import",
          "multiline-const",
          "multiline-expression"
        ],
        "next": "*"
      },
      {
        "blankLine": "any",
        "prev": ["export", "import"],
        "next": ["export", "import"]
      }
    ]
  }
}