.eslintrc

{
  "root": true,
  "extends": [
    "eslint:recommended"
  ],
  "parserOptions": {
    "ecmaVersion": 13,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": false
    }
  },
  "env": {
    "mocha": true,
    "node": true
  },
  "overrides": [
    {
      "files": [
        "**/*.ts"
      ],
      "excludedFiles": [
        "test/**/*.ts"
      ],
      "extends": [
        "eslint:recommended",
        "plugin:@typescript-eslint/eslint-recommended",
        "plugin:@typescript-eslint/recommended"
      ],
      "parser": "@typescript-eslint/parser",
      "plugins": [
        "@typescript-eslint"
      ],
      "parserOptions": {
        "ecmaVersion": 2020,
        "sourceType": "module",
        "ecmaFeatures": {
          "jsx": false
        },
        "project": "./tsconfig.json"
      }
    }
  ],
  "rules": {
    "eqeqeq": [
      "error",
      "smart"
    ],
    "no-extra-boolean-cast": 0,
    "quotes": [
      "error",
      "single"
    ],
    "curly": [
      "error",
      "all"
    ],
    "no-console": [
      "error",
      {
        "allow": [
          "error"
        ]
      }
    ],
    "no-debugger": 1,
    "semi": [
      "error",
      "always",
      {
        "omitLastInOneLineBlock": true
      }
    ],
    "no-trailing-spaces": 1,
    "no-else-return": 2,
    "no-extra-bind": 0,
    "no-implicit-coercion": 0,
    "no-useless-call": 0,
    "no-return-assign": 0,
    "eol-last": 1,
    "no-unused-vars": 0,
    "no-extra-semi": 0,
    "comma-dangle": 2,
    "no-underscore-dangle": 0,
    "no-lone-blocks": 0,
    "array-bracket-spacing": 2,
    "object-curly-spacing": 2,
    "brace-style": [
      2,
      "1tbs",
      {
        "allowSingleLine": true
      }
    ],
    "comma-spacing": 2,
    "comma-style": 2,
    "key-spacing": 2,
    "one-var": [
      "error",
      "never"
    ],
    "semi-style": [
      "error",
      "last"
    ],
    "space-in-parens": [
      "error",
      "never"
    ],
    "keyword-spacing": [
      2,
      {
        "before": true,
        "after": true
      }
    ],
    "space-infix-ops": 1,
    "padding-line-between-statements": [
      "error",
      {
        "blankLine": "always",
        "prev": "*",
        "next": "return"
      }
    ],
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1
      }
    ],
    "prefer-const": [
      "warn"
    ]
  },
  "globals": {
    "Promise": true,
    "Proxy": true,
    "Set": true,
    "Reflect": true,
    "element": "readonly",
    "by": "readonly",
    "expect": "readonly",
    "browser": "readonly",
    "app": "readonly",
    "Key": "readonly"
  }
}