.eslintrc.json

{
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "./tsconfig.lint.json",
    "ecmaVersion": 2018,
    "sourceType": "module",
    "tsconfigRootDir": "./"
  },
  "plugins": [
    "@typescript-eslint",
    "simple-import-sort"
  ],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:react/recommended"
  ],
  "ignorePatterns": [
    "jest.config.js",
    "lib/**",
    "src-v2/**",
    "packages/data/src/graphql/codegen/**",
    "*.js"
  ],
  "rules": {
    "@typescript-eslint/explicit-function-return-type": "error",
    "@typescript-eslint/no-use-before-define": "off",
    "@typescript-eslint/naming-convention": "off",
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": false
      }
    ],
    "camelcase": "off",
    "comma-dangle": [
      "error",
      "always-multiline"
    ],
    "comma-spacing": ["error", { "before": false, "after": true }],
    "consistent-return": "error",
    "curly": "error",
    "eol-last": [
      "error",
      "always"
    ],
    "indent": [
      "error",
      2
    ],
    "max-len": [
      "error",
      {
        "code": 200,
        "tabWidth": 4,
        "ignoreStrings": true,
        "ignoreComments": true,
        "ignoreUrls": true
      }
    ],
    "no-nested-ternary": "error",
    "no-multiple-empty-lines": [
      "error",
      {
        "max": 2,
        "maxBOF": 1
      }
    ],
    "object-curly-spacing": [
      "error",
      "always"
    ],
    "semi": [
      "error",
      "always"
    ],
    "space-before-blocks": [
      "error",
      "always"
    ],
    "keyword-spacing": [
      "error",
      {
        "before": true,
        "after": true
      }
    ],
    "quotes": [
      "error",
      "single"
    ],
    "react/prop-types": "off",
    "react/react-in-jsx-scope": "off"
  },
  "env": {
    "browser": true,
    "es6": true
  }
}