It's rather simple to create a wrapper that counts a number of times
callback is called and throws when this number isn't 1. And call it like
this:
fs.readFile('something', wrap(callback));
But you'll have to do it every time, so I don't think it's going to be used
widely.
On Tuesday, October 1, 2013 10:28:34 AM UTC+4, jeevan kk wrote:
>
> Mark,
>
> I agree with you that in some cases its meaningful. But I am into a huge
> project where we use a large number of third party modules. Its not
> practical to keep a flag everywhere and check it. I was searching for some
> general approach which we can follow. We can't find the faulty module until
> it lands in that edge case. And there are cases where we can ignore the
> callback getting called multiple times.
>
> On Tuesday, 1 October 2013 11:32:18 UTC+5:30, Mark Hahn wrote:
>>
>> The http module calls back every request. Sometimes multiple callbacks
>> make sense. Are the modules you are having trouble with supposed to only
>> return once? If so then post a bug report.
>>
>> I don't know what else you could do. I guess you could set a flag when
>> you send the callback function, clear it the first callback, and then
>> ignore the callback after that. I would never do this because I would be
>> blindly ignoring a problem.
>>
>>
>> On Mon, Sep 30, 2013 at 10:17 PM, jeevan kk <[email protected]> wrote:
>>
>>> I am using different 3rd party modules in my project. I have seen, in
>>> some odd situations the 3rd party module which I am using is calling the
>>> callback multiple times.
>>>
>>> Is there any general approach which I can follow so avoid such
>>> situations.
>>>
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