Почему google closure compressor наоборот увеличивает размер файлов после компрессии?

Question

[Максим Иванов]

Посредством node-minify (npm пакет) и его библиотеки делаю минификацию файла

сам файл весит 6кб

var CADESCOM_CADES_X_LONG_TYPE_1 = 0x5d;
var CADESCOM_CADES_BES = 1;
var CAPICOM_CURRENT_USER_STORE = 2;
var CAPICOM_MY_STORE = "My";
var CAPICOM_STORE_OPEN_MAXIMUM_ALLOWED = 2;
var CAPICOM_CERTIFICATE_FIND_SUBJECT_NAME = 1;

function GetErrorMessage(e) {
    var err = e.message;
    if (!err) {
        err = e;
    } else if (e.number) {
        err += " (" + e.number + ")";
    }
    return err;
}

function SignCreate(certSubjectName, dataToSign, $rootScope, storageService) {
    return new Promise(function(resolve, reject){
        cadesplugin.async_spawn(function *(args) {
            try {    
                var oStore = yield cadesplugin.CreateObjectAsync("CAPICOM.Store");
                yield oStore.Open(CAPICOM_CURRENT_USER_STORE, CAPICOM_MY_STORE,CAPICOM_STORE_OPEN_MAXIMUM_ALLOWED);

                var CertificatesObj = yield oStore.Certificates;
                var oCertificates = yield CertificatesObj.Find(
                    CAPICOM_CERTIFICATE_FIND_SUBJECT_NAME, certSubjectName);
                
                var Count = yield oCertificates.Count;

                if (Count == 0) {
                    throw("Certificate not found: " + args[0]);
                }
                var oCertificate = yield oCertificates.Item(1);
                var oSigner = yield cadesplugin.CreateObjectAsync("CAdESCOM.CPSigner");
                yield oSigner.propset_Certificate(oCertificate);

                var oSignedData = yield cadesplugin.CreateObjectAsync("CAdESCOM.CadesSignedData");
                var tspService =  "http://testca.cryptopro.ru/tsp/";
                
                yield oSignedData.propset_Content(dataToSign);
                yield oSigner.propset_TSAAddress(tspService);

                var sSignedMessage = yield oSignedData.SignCades(oSigner, CADESCOM_CADES_X_LONG_TYPE_1);
                //var sSignedMessage = yield oSignedData.SignCades(oSigner, CADESCOM_CADES_BES);

                yield oStore.Close();

                args[2](sSignedMessage);
            }
            catch (err)
            {   

                if ($rootScope) {
                    $rootScope.crypto = true;
                    $rootScope.$digest();
                }

                if (storageService) {
                    storageService.freezeMode = false;
                }
                
                throw GetErrorMessage(err);
            }
        }, certSubjectName, dataToSign, resolve, reject);
    });
}

/**
 * Формирование строчки сертификата
 */
function CertificateAdjuster() {

    this.extract = function(from, what) {
        certName = "";

        var begin = from.indexOf(what);

        if(begin>=0)
        {
            var end = from.indexOf(', ', begin);
            certName = (end<0) ? from.substr(begin) : from.substr(begin, end - begin);
        }

        return certName;
    };

    this.Print2Digit = function(digit){
        return (digit<10) ? "0"+digit : digit;
    };

    this.GetCertDate = function(paramDate) {
        var certDate = new Date(paramDate);
        return this.Print2Digit(certDate.getUTCDate())+"."+this.Print2Digit(certDate.getMonth()+1)+"."+certDate.getFullYear() + " " +
                 this.Print2Digit(certDate.getUTCHours()) + ":" + this.Print2Digit(certDate.getUTCMinutes()) + ":" + this.Print2Digit(certDate.getUTCSeconds());
    };

    this.GetCertName = function(certSubjectName){
        return this.extract(certSubjectName, 'CN=');
    };

    this.GetIssuer = function(certIssuerName){
        return this.extract(certIssuerName, 'CN=');
    };

    this.GetCertInfoString = function(certSubjectName, certFromDate, issuedBy){
        return this.extract(certSubjectName,'CN=') + "; Выдан: " + this.GetCertDate(certFromDate) + " " + issuedBy;
    };

}

function FillCertList_NPAPI($rootScope) {
 
   return new Promise(function(resolve, reject){
       cadesplugin.async_spawn(function *(args) {
           try {    

                var oStore = yield cadesplugin.CreateObjectAsync("CAPICOM.Store");
                yield oStore.Open(CAPICOM_CURRENT_USER_STORE, CAPICOM_MY_STORE,CAPICOM_STORE_OPEN_MAXIMUM_ALLOWED);

                var CertificatesObj = yield oStore.Certificates;
                var Count = yield CertificatesObj.Count;
                
                if (Count == 0) { 
                    // не установлены сертификаты
                    $rootScope.globalCountCertificate = 0; 
                    $rootScope.error = true;
                    throw("Нет сертификатов");
                }

                if (!Array.isArray($rootScope.globalOptionList)) {
                    $rootScope.globalOptionList = [];
                }

                var text;
                var dateObj = new Date();
                var count = 0;

                  for (var i = 1; i <= Count; i++) {
                       var cert = yield CertificatesObj.Item(i);
                       
                       var ValidToDate = new Date((yield cert.ValidToDate));
                       var ValidFromDate = new Date((yield cert.ValidFromDate));
                       var HasPrivateKey = yield cert.HasPrivateKey();
                       var Validator = yield cert.IsValid();
                       var IsValid = yield Validator.Result;

                       if( dateObj < new Date(ValidToDate) && IsValid && HasPrivateKey) {
                        var issuedBy = yield cert.GetInfo(1); 
                        issuedBy = issuedBy || "";

                        text = new CertificateAdjuster().GetCertInfoString(yield cert.SubjectName, ValidFromDate, issuedBy);
                        $rootScope.globalOptionList.push({'value': text.replace(/^cn=([^;]+);.+/i, '$1'), 'text' : text.replace("CN=", "") });
                        count++;
                       }
                       
                    }

                    $rootScope.globalCountCertificate = count;
                    console.log($rootScope)
          
            } catch (err) {   
                console.log($rootScope)
                $rootScope.error = true;
            }
        });
    

});

}

Но в итоге получается файл на 23кб, после минификации и такой:

var $jscomp={};$jscomp.scope={};$jscomp.defineProperty=typeof Object.defineProperties=="function"?Object.defineProperty:function(target,property,descriptor){descriptor=(descriptor);if(descriptor.get||descriptor.set)throw new TypeError("ES3 does not support getters and setters.");if(target==Array.prototype||target==Object.prototype)return;target[property]=descriptor.value};
$jscomp.getGlobal=function(maybeGlobal){return typeof window!="undefined"&&window===maybeGlobal?maybeGlobal:typeof global!="undefined"&&global!=null?global:maybeGlobal};$jscomp.global=$jscomp.getGlobal(this);$jscomp.SYMBOL_PREFIX="jscomp_symbol_";$jscomp.initSymbol=function(){$jscomp.initSymbol=function(){};if(!$jscomp.global.Symbol)$jscomp.global.Symbol=$jscomp.Symbol};$jscomp.symbolCounter_=0;$jscomp.Symbol=function(opt_description){return($jscomp.SYMBOL_PREFIX+(opt_description||"")+$jscomp.symbolCounter_++)};
$jscomp.initSymbolIterator=function(){$jscomp.initSymbol();var 
...

Минифицирую таким способом:

var filepath = "/home/splincode/Develop/blackbox/ui-util/src/shared/js/crypto/webkitcrypto.js";
var filename = filepath.split(/[/ ]+/).pop();
var promise = compressor.minify({
        compressor: 'gcc',
        input: filepath,
        output: `./src/public/js/${filename}`,
      });

      promise.then(function(min) {
        console.log("to minified: ", `./src/public/js/${filename}`);
      });

Uglify я так понял не поддерживает ES6
Я хотел просто минифицировать файл!

Answer 1

[Максим Иванов]

Попробовал babel + yui-compressor (вроде лучше)
Но все же без особых проблем работает только вариант с Google Closure
достаточно документацию почитать:
https://developers.google.com/closure/compiler/doc...