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I have developed a few custom Thingsboard widgets. It seems that I am able to access much of @angular/material from within my widget code. I am utilizing mat-table successfully, but in order to easily support pagination/filtering/sorting etc. I would like to utilize the MatTableDataSource class - this is resulting in an error as this class is apparently not exposed. How can I access MatTableDataSource from within my custom widget code?

pooley1994
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As for 3.3.4.1 version you can't import so can't use such classes in JS section of custom widget. I just grep the source code and found nothing about MatTableDataSource. There is similar question in the official bugtracker and there is no suggestion as well (16/06/2022).

devaskim
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    do you have any further information @devaskim? I have already stated that I've been unable to do it - would you happen to be able to share how you confirmed this? or whether there is any way to work around it? – pooley1994 Jun 15 '22 at 17:54
  • I [could find](https://imgur.com/a/jKFCoFF) any export of this class in Thingsboard source code. Unfortunately, at the moment I don't know any workaround – devaskim Jun 15 '22 at 18:34
  • By the way [the same question](https://github.com/thingsboard/thingsboard/issues/6517) is without any answer for 3 months. – devaskim Jun 15 '22 at 18:39
  • Yeah, I'd seen that Github question too :/ oh well. Thanks – pooley1994 Jun 15 '22 at 18:50
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    @pooley1994 If you are building your instance from source code (TB CE version), you can export this class as it has already done for [some RxJS API](https://github.com/thingsboard/thingsboard/blob/master/ui-ngx/src/app/modules/home/models/widget-component.models.ts#L266-L273). – devaskim Jun 16 '22 at 06:15
  • Thanks for following up @devaskim. We are not building our TB from source. For now I am just opting to implement table functionality in absence of `MatTableDataSource`. – pooley1994 Jun 16 '22 at 15:07