File with Google Charts

I already integrated Highcharts with WebDataRocks. I also try to integrate Google Chat. But I have a lot of problems try to do it. 
Do you have a detailed example of that ?
Let me tell you what I did.
1- Add at index html the script 

<script src=”https://cdn.webdatarocks.com/latest/webdatarocks.googlecharts.js”></script>
<script src=”https://www.gstatic.com/charts/loader.js”></script>

 
2. I add at the first line of the file .
 

/* eslint-disable no-undef */ 

 
because it generate at compiled
 
‘google’ is not defined no-undef

3. I enclose my file 
 
 
I appreciate a lot if someone give me advice o send me his code.
 
Best regards