Node crashes on null property of received object.

[durs]

Node crashes on null property of received object.

[durs]

Please send me an example of javascript that causes an application crash пт, 17 авг. 2018 г. в 18:47, Avrohom <[email protected]>:

…

Hi, On Node (I am actually using Node Webkit NW.js) when getting back results from a ActiveX object I have one of the properties of the returned object that may or may not be null. I don't even get a chance for null-checking. As soon I try to access it be it either via code or the debugger the application crashes brutally. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#36>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAjGNQ79UeoJMP-CRlcOLX83k1fehfjpks5uRuWugaJpZM4WByhP> .

[Avrohom]

Hi Yuri,

Thanks for your feedback.

Here is the code:

`function getQB_info() {
require('winax')

const session_manager = new ActiveXObject('QBFC13.QBSessionManager.1');
const ENOpenMode = Object.freeze({ 'omSingleUser': 0, 'omMultiUser': 1, 'omDontCare': 2 })
const appName = "AmazonConnector"
const appId = ''
function doRequestAndGetResult(reqSet) {
    var responseMsgSet = session_manager.doRequests(reqSet);
    var status = responseMsgSet.ResponseList.GetAt(0);
    var statusCode = status.StatusCode;
    var statusMessage = status.StatusMessage;

    if (statusCode !== 0) {
        var message = 'Quickbooks Error: "' + statusMessage + '"'
        var err = new Error(message)
        err.code = statusCode
        throw err
    }

    return responseMsgSet.ResponseList.GetAt(0).Detail
}

session_manager.OpenConnection(appId, appName)
var result = session_manager.BeginSession('', ENOpenMode.omDontCare)

try {
    var requestSet = session_manager.CreateMsgSetRequest("UK", 12, 0)

    requestSet.ClearRequests();
    var companyQuery = requestSet.AppendCompanyQueryRq()
    var companyRet = doRequestAndGetResult(requestSet)
    console.log(companyRet.CompanyName.GetValue())

    console.log(companyRet.Address.Addr1.GetValue())

    // companyRet.Address.Addr2 == null. or 'undefined' / not declared doesn't exist or whatever. 
    // The following instructions or If hovering on that variable whilst debugging will crash the whole application
    if (typeof companyRet.Address.Addr2 !== 'undefined' && companyRet.Address.Addr2 !== null)
        console.log(companyRet.Address.Addr2)

    if (companyRet.Phone !== null)
        console.log(companyRet.Phone.GetValue())

    if (companyRet.Email)
        console.log(companyRet.Email.GetValue())

    if (companyRet.EIN !== null)
        console.log(companyRet.EIN.GetValue())

    // companyRet.SSN == null. or 'undefined' / not declared doesn't exist or whatever.
    // The following instructions or If hovering on that variable whilst debugging will crash the whole application
    if (typeof companyRet.SSN !== 'undefined' && companyRet.SSN !== null)
        console.log(companyRet.SSN.GetValue())
}
catch (e) {
    alert(e)
}

session_manager.EndSession()
session_manager.CloseConnection()

}`

[durs]

I`m fixed null pointers in variants, try [email protected]

[Avrohom]

Wow! Excellent staff!!!

I have tried and tested. Works wonderfully. So Great!

Many thanks!!!!