.jshintrc

{
    "maxerr"        : 50,       // {int} Maximum error before stopping
    "camelcase"     : true,     // true: Identifiers must be in camelCase
    "eqeqeq"        : true,     // true: Require triple equals (===) for comparison
    "latedef"       : true,     // true: Require variables/functions to be defined before being used
    "newcap"        : true,     // true: Require capitalization of all constructor functions e.g. `new F()`
    "noempty"       : true,     // true: Prohibit use of empty blocks
    "nonbsp"        : true,     // true: Prohibit "non-breaking whitespace" characters.
    "quotmark"      : "single", // Quotation mark consistency:
                                //   false    : do nothing (default)
                                //   true     : ensure whatever is used is consistent
                                //   "single" : require single quotes
                                //   "double" : require double quotes
    "unused"        : true,     // Unused variables:
                                //   true     : all variables, last function parameter
                                //   "vars"   : all variables only
                                //   "strict" : all variables, all function parameters
    "strict"        : true,     // true: Requires all functions run in ES5 Strict Mode
    "varstmt"       : true,     // true: Disallow any var statements. Only `let` and `const` are allowed.
    "esversion"     : 6         // {int} Specify the ECMAScript version to which the code must adhere.
}