eslint config

.eslintrc.js

module.exports = {
  root: true,
  parserOptions: {
    ecmaVersion: 6,
    sourceType: 'module'
  },
  extends: 'eslint:recommended',
  env: {
    browser: true
  },
  rules: {
    // spacing
    "array-bracket-spacing": ["error", "never"],
    "arrow-spacing": "error",
    "block-spacing": "error",
    "comma-spacing": "error",
    "key-spacing": "error",
    "keyword-spacing": "error",
    "newline-after-var": "error",
    "newline-before-return": "error",
    "object-curly-spacing": ["error", "always"],
    "space-before-blocks": "error",
    "space-in-parens": "error",
    "space-infix-ops": "error",
    "spaced-comment": "error",

    // minimalism
    "dot-notation": "error",
    "no-lonely-if": "error",
    "no-lone-blocks": "error",
    "object-shorthand": ["error", "methods"],
    "quote-props": ["error", "as-needed"],
    "prefer-arrow-callback": "error",
    "no-empty-function": "error",

    // safety
    "no-confusing-arrow": "error",
    "no-var": "error",
    "prefer-const": "error",
    "semi": "error",

    // consistency/readability
    "brace-style": ["1tbs", { allowSingleLine: true }],
    "curly": "off",
    "indent": ["error", 2],
    "no-negated-condition": "error",

    // git-friendly
    "comma-dangle": "off",
    "eol-last": "error",


    // turned off
    "camelcase": "off",
    "arrow-parens": "off",
    "no-magic-numbers": "off",
    "arrow-body-style": "off",
    "one-var": "off",
    "consistent-return": "off",
    "valid-jsdoc": "off",
    "no-ternary": "off",
    "space-before-function-paren": "off",
    "quotes": "off",
    "array-callback-return": "off",
    "no-else-return": "off",
    "no-undefined": "off",
    "brace-style": "off",
    "consistent-this": "off",
    "prefer-reflect": "off",
    "max-len": "off",
    "newline-per-chained-call": "off",
    "lines-around-comment": "off",

    // missing
    // - new line before and after if and other control statements
    // - new line before multi-line comment, only if it's not the first statement in the block
    // - error on Ember function prototype extensions (property, observer, on, ...)
  },
  globals: {
    Promise: true,
    $: true
  }
};