client.timeseries() is not working

[Jaymin-adzmedia]

Hello

I was using client.topN() for get top records from druid but now my requirements has been changed so i have to user client.timeseries() but it is not working on nodejs.

error:
2|DSP-api | TypeError: query.dataSource(...).dimension is not a function
2|DSP-api | at dimensionData (/home/ec2-user/reports/dsp_reports/controllers/ReportController.js:228:18)

If i try raw query directly in postman it is working.
what is wrong with it. Please help me out.

Thanks.