function checkArguments () {
    var obj = flag(this, 'object')
      , type = Object.prototype.toString.call(obj);
    this.assert(
        '[object Arguments]' === type
      , 'expected #{this} to be arguments but got ' + type
      , 'expected #{this} to not be arguments'
    );
  }
### .arguments

Asserts that the target is an arguments object.

    function test () {
      expect(arguments).to.be.arguments;
    }

Can also be used as a function, which prevents some linter errors.

    function test () {
      expect(arguments).to.be.arguments();
    }

@name arguments
@alias Arguments
@api public