Don't break when attempting to import a zip file that's not an Excel file (eg. .numbers) #423
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…readsheet ... a .numbers file, for instance.
Contributor
Author
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Hi Michael,
Thanks for taking a look!
The issue is that `model.properties` doesn't appear to exist when the zip
file isn't structured in a certain way, so `model.properties.date1904` (or
even `model.properties || model.properties.date1904`) will dereference
undefined and cause:
```
TypeError: Cannot read property 'date1904' of undefined
```
... when running the enclosed regression test.
Best regards,
Andreas
…On Mon, Nov 6, 2017 at 8:10 PM, Michael Lelyakin ***@***.***> wrote:
***@***.**** commented on this pull request.
------------------------------
In lib/xlsx/xlsx.js
<#423 (comment)>:
> @@ -108,7 +108,7 @@ XLSX.prototype = {
sharedStrings: model.sharedStrings,
media: model.media,
mediaIndex: model.mediaIndex,
- date1904: model.properties.date1904,
+ date1904: model.properties && model.properties.date1904,
I'm not sure that the meaning of this line of code, but I think that you
want to use || operator instead of &&.
Are you sure in this line? Can you provide me little clarification for it?
:)
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Hi!
We're running a service that uses exceljs to process uploaded Excel spreadsheets. The other day a user accidentally uploaded a wrongly named .numbers file, which caused an exceljs crash:
I had a quick look, and it seems like .numbers files also use a zip-based container, but since all the entries are differently named compared to .xlsx, some internal state ends up being unintialized, which makes
reconcilebreak.Turns out it was rather easy to just default that state so the file loads, but isn't populated with any worksheets. It would probably be better to reject the promise with a specific error, though. What do you think?