.eslintrc.json

{
  "root": true,
  "env": {
    "node": true,
    "browser": true,
    "es6": true
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "rules": {
    // Auto-fixable
    "array-bracket-spacing": "error",
    "array-bracket-newline": [
      "error",
      { "minItems": 3 }
    ],
    "array-element-newline": [
      "error",
      { "minItems": 3 }
    ],
    "arrow-body-style": ["error", "as-needed"],
    "arrow-parens": ["error", "as-needed"],
    "block-spacing": "error",
    "brace-style": [
      "error",
      "1tbs",
      { "allowSingleLine": true }
    ],
    "comma-dangle": ["error", "always-multiline"],
    "comma-spacing": "error",
    "comma-style": "error",
    "computed-property-spacing": "error",
    "curly":  "error",
    "dot-location": ["error", "property"],
    "dot-notation": "error",
    "eol-last": "error",
    "eqeqeq": "error",
    "func-call-spacing": "error",
    "function-call-argument-newline": ["error", "consistent"],
    "function-paren-newline": ["error", "multiline-arguments"],
    "implicit-arrow-linebreak": "error",
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1,
        "ObjectExpression": 1
      }
    ],
    "jsx-quotes": "error",
    "key-spacing": "error",
    "keyword-spacing": [
      "error",
      {
        "after": true,
        "before": true,
        "overrides": {
          "switch": {
            "after": false
          },
          "case": {
            "before": false
          }
        }
      }
    ],
    "linebreak-style": "error",
    "lines-around-comment": "error",
    "newline-per-chained-call": "error",
    "no-confusing-arrow": "error",
    "no-else-return": "error",
    "no-empty": "off",
    "no-extra-bind": "error",
    "no-implicit-coercion": [2, { "allow": ["!!", "~"] } ],
    "no-lonely-if": "error",
    "no-multi-spaces": "error",
    "no-multiple-empty-lines": "error",
    "no-trailing-spaces": "error",
    "no-undef-init": "error",
    "no-unneeded-ternary": "error",
    "no-useless-return": "error",
    "no-var": "error",
    "no-whitespace-before-property": "error",
    "object-curly-spacing": [
      "error",
      "always"
    ],
    "object-curly-newline": [
      "error",
      {
        "multiline": true,
        "minProperties": 3
      }
    ],
    "object-property-newline": "error",
    "object-shorthand": "error",
    "one-var": [
      "error",
      {
        "let": "never",
        "const": "never",
        "separateRequires": true
      }
    ],
    "operator-assignment": "error",
    "operator-linebreak": ["error", "before"],
    "padded-blocks": ["error", "never"],
    "padding-line-between-statements": [
      "error",
      {
        "blankLine": "always",
        "prev": ["let", "const"],
        "next": "block-like"
      },
      {
        "blankLine": "always",
        "prev": "*",
        "next": ["return"]
      },
      {
        "blankLine": "never",
        "prev": "*",
        "next": ["case", "default"]
      }
    ],
    "prefer-arrow-callback": "error",
    "prefer-const": "error",
    "prefer-exponentiation-operator": "error",
    "prefer-template": "error",
    "quote-props": ["error", "consistent"],
    "quotes": ["error", "single"],
    "rest-spread-spacing": "error",
    "semi": "error",
    "semi-style": "error",
    "space-before-blocks": "error",
    "space-before-function-paren": [
      "error", 
      {"anonymous": "always", "named": "never", "asyncArrow": "always"}
    ],
    "space-in-parens": ["error", "never"],
    "spaced-comment": "error",
    "template-curly-spacing": "error",
    "unicode-bom": "error",
    "yoda": "error",

    // Non-auto-fixable
    "accessor-pairs": "error",
    "consistent-return": "error",
    "no-prototype-builtins": "off",
    
    // Plugins
    "@typescript-eslint/no-var-requires": "off",
    "@typescript-eslint/no-explicit-any": "off",
    "@typescript-eslint/no-use-before-define": "error",
    "@typescript-eslint/no-shadow": "error",
    "@typescript-eslint/ban-types": "off"
  },
  "overrides": [{
    "files": ["**/*.d.ts"],
    "parser": "@typescript-eslint/parser",
    "rules": {
      "dot-notation": "off"
    }
  }]
}