.eslintrc.json

{
  "env": {
    "commonjs": true,
    "es6": true,
    "node": true,
    "jest/globals": true
  },
  "plugins": ["prettier", "jsdoc", "jest"],
  "extends": [
    "plugin:prettier/recommended",
    "prettier/standard",
    "plugin:jsdoc/recommended",
    "plugin:jest/all"
  ],
  "globals": {
    "jest": true,
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parserOptions": {
    "ecmaVersion": 2018
  },
  "rules": {
    "prettier/prettier": ["error", { "singleQuote": true, "semi": false }],
    "eqeqeq": ["error", "always"],
    "require-jsdoc": "error",
    "jest/no-disabled-tests": "warn",
    "jest/no-focused-tests": "error",
    "jest/no-identical-title": "error",
    "jest/prefer-to-have-length": "warn",
    "jest/valid-expect": "error",
    "complexity": ["error", 7],
    "jsdoc/valid-types": 1,
    "jsdoc/check-tag-names": 0,
    "no-console": "warn",
    "no-alert": "warn",
    "no-debugger": "error"
  }
}