.jshintrc

{
  "bitwise":  true,     // Prohibit bitwise operators (&, |, ^, etc.).
  "curly":    true,     // Require {} for every new block or scope.
  "eqeqeq":   true,     // Require triple equals i.e. `===`.
  "forin":    true,     // Tolerate `for in` loops without `hasOwnPrototype`.
  "immed":    true,     // Require immediate invocations to be wrapped in parens e.g. `( function(){}() );`
  "latedef":  true,     // Prohibit variable use before definition.
  "newcap":   true,     // Require capitalization of all constructor functions e.g. `new F()`.
  "noarg":    true,     // Prohibit use of `arguments.caller` and `arguments.callee`.
  "noempty":  true,     // Prohibit use of empty blocks.
  "nonew":    true,     // Prohibit use of constructors for side-effects.
  "plusplus": false,     // Prohibit use of `++` & `--`.
  "regexp":   true,     // Prohibit `.` and `[^...]` in regular expressions.
  "undef":    true,     // Require all non-global variables be declared before they are used.
  "strict":   true,     // Require `use strict` pragma in every file.
  "trailing": true,     // Prohibit trailing whitespaces.
  "quotmark": "single", // This option enforces the consistency of quotation marks used throughout your code. Use "single", "double" or true.
  "maxdepth": 6,        // This option lets you control how nested do you want your blocks to be.

  // == Relaxing Options ================================================
  //
  // These options allow you to suppress certain types of warnings. Use
  // them only if you are absolutely positive that you know what you are
  // doing.

  "asi":          false,    // Tolerate Automatic Semicolon Insertion (no semicolons).
  "boss":         false,    // Tolerate assignments inside if, for & while. Usually conditions & loops are for comparison, not assignments.
  "debug":        true,    // Allow debugger statements e.g. browser breakpoints.
  "eqnull":       false,    // Tolerate use of `== null`.
  "esnext":       true,    // Allow ES.next specific features such as `const` and `let`.
  //"esversion":    6,
  "evil":         false,    // Tolerate use of `eval`.
  "expr":         false,    // Tolerate `ExpressionStatement` as Programs.
  "funcscope":    false,    // Tolerate declarations of variables inside of control structures while accessing them later from the outside.
  "globalstrict": false,    // Allow global "use strict" (also enables 'strict').
  "iterator":     false,    // Allow usage of __iterator__ property.
  "lastsemic":    true,    // Tolerat missing semicolons when the it is omitted for the last statement in a one-line block.
  "laxbreak":     true,    // Tolerate unsafe line breaks e.g. `return [\n] x` without semicolons.
  "laxcomma":     false,    // Suppress warnings about comma-first coding style.
  "loopfunc":     false,    // Allow functions to be defined within loops.
  "multistr":     true,    // Tolerate multi-line strings.
  "onecase":      true,    // Tolerate switches with just one case.
  "proto":        false,    // Tolerate __proto__ property. This property is deprecated.
  "regexdash":    false,    // Tolerate unescaped last dash i.e. `[-...]`.
  "scripturl":    false,    // Tolerate script-targeted URLs.
  "smarttabs":    false,    // Tolerate mixed tabs and spaces when the latter are used for alignmnent only.
  "shadow":       false,    // Allows re-define variables later in code e.g. `var x=1; x=2;`.
  "sub":          false,    // Tolerate all forms of subscript notation besides dot notation e.g. `dict['key']` instead of `dict.key`.
  "supernew":     false,    // Tolerate `new function () { ... };` and `new Object;`.
  "validthis":    false,    // Tolerate strict violations when the code is running in strict mode and you use this in a non-constructor function.

  // == Environments ====================================================
  //
  // These options pre-define global variables that are exposed by
  // popular JavaScript libraries and runtime environments—such as
  // browser or node.js.

  "browser":     false,     // Standard browser globals e.g. `window`, `document`.
  "couch":       false,    // Enable globals exposed by CouchDB.
  "devel":       false,    // Allow development statements e.g. `console.log();`.
  "dojo":        false,    // Enable globals exposed by Dojo Toolkit.
  "jquery":      false,    // Enable globals exposed by jQuery JavaScript library.
  "mootools":    false,    // Enable globals exposed by MooTools JavaScript framework.
  "node":        true,    // Enable globals available when code is running inside of the NodeJS runtime environment.
  "nonstandard": false,    // Define non-standard but widely adopted globals such as escape and unescape.
  "prototypejs": false,    // Enable globals exposed by Prototype JavaScript framework.
  "rhino":       false,    // Enable globals available when your code is running inside of the Rhino runtime environment.
  "wsh":         false,    // Enable globals available when your code is running as a script for the Windows Script Host.

  // == JSLint Legacy ===================================================
  //
  // These options are legacy from JSLint. Aside from bug fixes they will
  // not be improved in any way and might be removed at any point.

  "nomen":    false,    // Prohibit use of initial or trailing underbars in names.
  "onevar":   false,    // Allow only one `var` statement per function.
  "passfail": false,    // Stop on first error.
  "white":    false,    // Check against strict whitespace and indentation rules.

  "indent": 4,        // Specify indentation spacing

  "globals": {
    "describe":        false,
    "it":              false,
    "before":          false,
    "beforeEach":      false,
    "after":           false,
    "afterEach":       false
  }
}