AtNes

Not sure if it's on time but here what you can do to achive what you need: ``` import { styleSheetSerializer } from 'jest-styled-components'; import { diff } from 'jest-diff';...

What I found is that stream is being [destroyed](https://github.com/koajs/koa/blob/master/lib/response.js#L175) on client connection abort. However, node-fetch stream abortion doesn't destroy the socket. I could see that by checking heap dump, [this](https://github.com/node-fetch/node-fetch/blob/2.x/src/index.js#L358)...

Seems like the issue in node-fetch is outlined here https://github.com/node-fetch/node-fetch/issues/1762. To conclude this issue is reproducible only when koa and nodeFetchV2 used together