minimum d3js import list

Hello,
what is the minimum d3js requirement for c3 ?

I would like to produce a minimal build for d3.js with stuff like :
`import {scaleLinear} from "d3-scale";
`

From the doc of D3 : "D3 is written using ES2015 modules ..." https://github.com/d3/d3

so if anyone has the list, could be great.
I am currently building a Vuejs application with webpack and with the vue wrapper around C3 : https://github.com/chryb/vue-c3 .
My bundle size is big just for one little graph, that's why my question.