.eslintrc.json

{
    "root": true,
    "env": {
      "browser": true,
      "node": true,
      "es6": true
    },
    "overrides": [
      {
        "files": ["*.jsx", "*.js"]
      }
    ],
    "settings": {
      "react": {
        "version": "detect"
      }
    },
    "globals": { // ignore global variables
      "__DEFAULT_LAT": true,
      "__DEFAULT_LNG": true,
      "__MAP_DATA_URL": true,
      "__MAPBOX_PUBLIC_TOKEN": true,
      "__GMAP_API_KEY": true,
      "__GMAP_URL": true
    }, 
    "extends": [
      "eslint:recommended",
      "plugin:react/recommended"
    ],
    "parserOptions": {
      "requireConfigFile": false,
      "ecmaFeatures": {
        "jsx": true
      },
      "ecmaVersion": 2018,
      "sourceType": "module",
      "babelOptions": {
        "presets": ["@babel/preset-react"]
      }
    },
    "plugins": [
      "react"
    ],
    "parser": "@babel/eslint-parser",
    // This may need to change. The goal is to ignore the double quotes on .json files. Might need another pair of eyes on this.
    "ignorePatterns": ["*json"],
    "rules": {
      "space-before-function-paren": [
        "error", {
          "anonymous": "always",
          "named": "always",
          "asyncArrow": "always"
        }
      ],
      "space-before-blocks": "error",
      "arrow-spacing": [
        "error",
        { "before": true, "after": true }
      ],
      "key-spacing": 0,
      "jsx-quotes": [
        2,
        "prefer-single"
      ],
      "max-len": [
        2,
        120,
        2,
        {
          "ignoreStrings": true 
        }
      ],
      "object-curly-spacing": [
        2,
        "always"
      ],
      "camelcase": [
        "error",
        {
          "allow": [
            "UNSAFE_componentWillMount",
            "UNSAFE_componentWillReceiveProps",
            "stream_live"
          ]
        }
      ],
      "indent": [
        "error",
        2,
        {
          "SwitchCase": 1
        }
      ],
      "linebreak-style": [
        "error",
        "unix"
      ],
      "quotes": [
        "error",
        "single"
      ],
      "semi": [
        "error",
        "never"
      ]
    }
  }