whole_func_string: function isPrototype(value) {
    var Ctor = value && value.constructor,
        proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto$4;
  
    return value === proto;
  }
func_code_string: function isPrototype(value) {
    var Ctor = value && value.constructor,
        proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto$4;
  
    return value === proto;
  }
func_documentation_string: Checks if `value` is likely a prototype object.
  
  @private
  @param {*} value The value to check.
  @returns {boolean} Returns `true` if `value` is a prototype, else `false`.