.eslintrc.json

{
  "extends": "airbnb-base",
  "parserOptions": {
    "ecmaVersion": "latest",
    "sourceType": "module"
  },
  // allow certain globals to be used without declaration.
  "globals": {
    // globals from the browser environment.
    "document": "readonly",
    "window": "readonly",
    "il": "writable",
    // globals from the mocha testing framework.
    "beforeEach": "readonly",
    "afterEach": "readonly",
    "describe": "readonly",
    "before": "readonly",
    "after": "readonly",
    "it": "readonly"
  },
  // minified and bundled scripts are exempt from the
  // code-style.
  "ignorePatterns": [
    "**/dist/*",
    "*.min.js"
  ],
  "rules": {
    // allow function hoisting as javascript code is
    // compiled before execution.
    "no-use-before-define": [
      "error",
      "nofunc"
    ],
    // enforce camelcase for classes as well.
    "camelcase": [
      "error",
      {
        "properties": "always",
        "ignoreDestructuring": false,
        "ignoreGlobals": false
      }
    ],
    // allow anonymous functions for iife's and mocha.js.
    "func-names": [
      "warn",
      "never"
    ],
    // allow unresolved imports due to module-bundling
    // and third-party libraries.
    "import/no-unresolved": 0,
    // allow import of devDependencies in test files.
    "import/no-extraneous-dependencies": [
      "error",
      {
        "devDependencies": true
      }
    ],
    // allow to reassign argument properties for e.g. altering
    // HTMLElement styles and state.
    "no-param-reassign": [
      "error",
      {
        "props": false
      }
    ]
  }
}