I'm not sure if this is the answer (I think it is), or should I post this as a comment BUT here with your code:
d3.hierarchy() "" "" , partition(root).
https://bl.ocks.org/maybelinot/5552606564ef37b5de7e47ed2b7dc099, , d3.hierarchy() {name: "flare", children: Array[15]}
, data , :
{name: "test", children: data}, .
FIDDLE . (, arrayToObject)
, .:)