.eslintrc

{
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module"
  },
  "extends": ["eslint:recommended"],
  "env": {
    "browser": true,
    "amd": true,
    "node": true,
    "mocha": true
  },
  "rules": {
    "comma-dangle": 0,
    "quotes": [ 1, "single" ],
    "no-undef": 1,
    "global-strict": 0,
    "no-extra-semi": 1,
    "indent": ["error", 4],
    "no-underscore-dangle": 0,
    "no-console": 0,
    "no-constant-condition": 0,
    "no-unused-vars": 0,
    "no-trailing-spaces": [1, { "skipBlankLines": true }],
    "no-unreachable": 1,
    "no-alert": 0,
    "prefer-const": 1,
    "object-curly-spacing": ["error", "always"],
    "array-bracket-spacing": ["error", "never"],
    "block-spacing": ["error", "always"],
    "comma-spacing": ["error", { before: false, after: true }],

    // specify the maximum length of a line in your program
    // http://eslint.org/docs/rules/max-len
    "max-len": ["error", 150, 2, {
      "ignoreUrls": true,
      "ignoreComments": false,
      "ignoreRegExpLiterals": true,
      "ignoreStrings": true,
      "ignoreTemplateLiterals": true
    }],

    // specify the max number of lines in a file
    // http://eslint.org/docs/rules/max-lines
    "max-lines": ["off", {
      "max": 300,
      "skipBlankLines": true,
      "skipComments": true
    }]
  }
}