Autocomplete for json array(intellisense?)

Hello, 

I would like to know if it's possible to autocomplete json array with strings based on another global variable or a file. 

Example: 

let myArray = ["First", "Second", "Third"];  

My JSON would have an array: 

 
{

"myArray": [];/*When I try to add a string here it 
should show me all possibile things I can put
(based on my variable above if possible), 
so it would show "First", "Second", "Third".  
Pressing ctrl + space might expand it as well.*/

}

Perhaps it might detect that I am trying to add a string by starting with quotation mark, which is fine to me. 

The reason for that is to make it easier with filling my json file with data, so I don't have to look up all possible options I can choose.