.eslintrc-codebase

{
    "ecmaFeatures": {
        "jsx": true,
        "arrowFunctions": true,
        "binaryLiterals": true,
        "blockBindings": true,
        "defaultParams": true,
        "forOf": true,
        "generators": true,
        "objectLiteralComputedProperties": true,
        "objectLiteralDuplicateProperties": true,
        "objectLiteralShorthandMethods": true,
        "objectLiteralShorthandProperties": true,
        "octalLiterals": true,
        "regexUFlag": true,
        "regexYFlag": true,
        "superInFunctions": true,
        "templateStrings": true,
        "unicodeCodePointEscapes": true
    },

    "plugins": [
      "react"
    ],

    "env": {
        "browser": true
    },

    "globals": {
        "module": true,  // CommonJS module
        "require": true,  // CommonJS require
        "React": true,    // ReactJs
        "fetch": true    // Fetch js
    },

    "rules": {
        // ESLint Rules:
        // http://eslint.org/docs/rules/

        // Possible Errors
        "no-console": 0,
        "block-scoped-var": 2,

        // Best Practices
        "complexity": [1, 4],
        "no-eq-null": 2,
        "no-self-compare": 2,

        // Strict Mode
        "strict": 0, // Since it's added automatically by strict-loader

        // Stylistic issues
        "indent": [2, 2, { "indentSwitchCase": true }],
        "consistent-this": [2, "self"],
        "func-names": 2,
        "no-lonely-if": 2,
        "no-unused-vars" : 1,
        "no-multiple-empty-lines": 2,
        "no-nested-ternary": 2,
        "no-underscore-dangle": 1,
        "quotes": [2, "single", "avoid-escape"],
        "space-after-keywords": 2,
        "space-before-blocks": 2,
        "space-before-function-parentheses": 2,
        "spaced-line-comment": 2,
        "space-unary-ops": 2,

        // Legacy
        "max-len": [2, 120],

        // React
        // https://github.com/yannickcr/eslint-plugin-react
        "react/jsx-quotes": [2, "single"]
    }
}