This is caused by an upstream change I guess, but I now get this console log:
LOG: Download the Apollo DevTools for a better development experience: https://...
Both in development as well as in my test output. I have googled a bit but not found a way to disable it so far... I tried adding this to my tests/index.html:
<script>
__REACT_DEVTOOLS_GLOBAL_HOOK__ = true;
</script>
And also setting connectToDevTools: false in my tests, but still get the message. Would be great to find a way to disable this message!