.eslintrc.json

{
  "extends": ["airbnb-base"],
  "parserOptions": {
    "ecmaVersion": 2020
  },
  "env": {
    "node": true
  },
  "globals": {
    "document": false,
    "navigator": false,
    "window": false,
    "describe": true,
    "it": true,
    "TEST_BACKEND_APP": true,
    "TEST_DATABASE_INSTANCE": true,
    "TEST_LEGACY_REDIS_CLIENT": true,
    "TEST_IO": true,
    "TEST_IO_SERVER_2": true,
    "should": true,
    "beforeEach": true,
    "afterEach": true,
    "before": true,
    "after": true
  },
  "rules": {
    "semi": ["error", "always"],
    "quotes": [
      "error",
      "single",
      {
        "avoidEscape": true,
        "allowTemplateLiterals": true
      }
    ],
    "arrow-spacing": [
      "error",
      {
        "before": true,
        "after": true
      }
    ],
    "implicit-arrow-linebreak": "off",
    "operator-linebreak": "off",
    "no-mixed-spaces-and-tabs": "error",
    "object-curly-newline": "off",
    "function-paren-newline": "off",
    "arrow-parens": "off",
    "no-eval": "error",
    "block-spacing": ["error", "always"],
    "comma-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "indent": "off",
    "camelcase": [
      "error",
      {
        "properties": "never"
      }
    ],
    "curly": ["error", "all"],
    "no-unused-expressions": [
      "error",
      { "allowShortCircuit": true, "allowTernary": true, "allowTaggedTemplates": true }
    ],
    "no-unused-vars": ["error", { "vars": "all", "args": "none", "ignoreRestSiblings": true }],
    "func-call-spacing": ["error", "never"],
    "import/no-extraneous-dependencies": ["error", { "devDependencies": ["**/*.test.js"] }],
    "max-len": [
      "error",
      120,
      2,
      {
        "ignoreUrls": true,
        "ignoreComments": false,
        "ignoreRegExpLiterals": true,
        "ignoreStrings": true,
        "ignoreTemplateLiterals": true
      }
    ],
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": false
      }
    ],
    "newline-per-chained-call": "off"
  }
}