.eslintrc

// vim: syntax=json
{
  "parser": "babel-eslint",
    "env": {
      "browser": true,
      "node": true,
      "mocha": true
    },

    // Start with rules from eslint recommended setting, and override below.
    "extends": "airbnb",

    // Linting rules are enforced based on the following levels:
    // (Reference: http://eslint.org/docs/user-guide/configuring)
    // 0: turn the rule off
    // 1: turn the rule on as a warning (doesn't affect exit code)
    // 2: turn the rule on as an error (exit code is 1 when triggered)
    "rules": {
      // Use 2 spaces for indentation,
      "indent": [2, 2, { "SwitchCase": 1 }],

      // Require single quotes for strings.
      "quotes": [2, "single", "avoid-escape"],

      // Allow 'while (true), do something, break' pattern.
      "no-constant-condition": 0,

      // Require semicolons where they should be.
      "semi": [2, "always"],

      // Disallow littering with unused variables (except function args).
      "no-unused-vars": [2, {"vars": "all", "args": "none"}],

      // Don't enforce newline at the end of file.
      "eol-last": [0],

      // Don't enforce disallowing mixing regular variable and require declarations
      "no-mixed-requires": [0],

      // Don't enforce disallowing dangling underscores in identifiers
      "no-underscore-dangle": [0],

      // Prevent variables used in JSX to be incorrectly marked as unused
      "react/jsx-uses-vars": 1,

      // Prevent React to be incorrectly marked as unused
      "react/jsx-uses-react": 1,

      // disable forcing .jsx extension
      "react/jsx-filename-extension": 0,

      "import/no-extraneous-dependencies": [
        "error",
      {
        "devDependencies": [
          "**/test/**/*",
        "**/playground/**/*",
        "webpack.**",
        "rollup.**"
        ]
      }
      ]
    },
    {
      "parserOptions": {
        "ecmaFeatures": {
          "jsx": true
        }
      }
    },
    "plugins": [
      "react"
    ]
}