DataTable error while using stateStorage with date filter

[ahmedkandel]

First, thank you for the great library.

I have a DataTable column with dataType="date" and using default date filter modes. When enabling stateStorage on the DataTable I got the following error:

Uncaught (in promise) TypeError: filter.getTime is not a function

After some digging, I have found that in "src > components > DataTable.vue" the saveState() is using JSON.stringify(state) which will convert date objects to ISO8601 string, Then the restoreState() is using JSON.parse(stateString) which will keep the date as string and causes error when calling date methods e.g. getTime() on it to filter.

I made a PR to fix this and will submit it soon.

[cagataycivici]

Fixed with an alternate regex, thanks.

[ahmedkandel]

@cagataycivici I think the alternate regex is not accurate for two cases:

1. It will pass values like '9999-99-99T99:99:99.999Z' but when converting it to date will give an error. As the regex doesn't check correct days, months, ...
2. It doesn't support AD/BC years which is a part of ISO 8601 e.g. ancient date “before Christ” or far future dates.

So i think mine was better. Thanks.