.jshintrc

{
  /*
   * ENVIRONMENTS
   * =================
   */

  // Define globals exposed by Node.js.
  "node": true,

  // Define globals exposed by Mocha
  "mocha": true,

  // Allow ES6.
  "esnext": true,

  /*
   * ENFORCING OPTIONS
   * =================
   */

  // Requires to always put curly braces around blocks
  "curly": true,

  // Prohibit use of == and != in favor of === and !==.
  "eqeqeq": true,

  // Prohibit use of a variable before it is defined.
  "latedef": true,

  // Enforce placing 'use strict' at the top function scope
  "strict": true,

  // Prohibit use of explicitly undeclared variables.
  "undef": true,

  // Warn when variables are defined but never used.
  "unused": true,

  // Prohibit overwriting prototypes of native objects
  "freeze": true,

  /*
   * RELAXING OPTIONS
   * =================
   */

  // Suppress warnings about == null comparisons.
  "eqnull": true
}