Node 4 support

[pascalduez]

Hi,

there's no mention in the docs nor migration guide that enzyme >= 3 dropped support for Node 4.
However, since rst-selector-parser has such restriction, installs fails on Node 4.

[ljharb]

In that case, that's an issue in rst-selector-parser; but engines is merely advisory. Why would that make installation fail?

[pascalduez]

Why would that make installation fail?

It seems to be failing on the CI, with Yarn.
https://travis-ci.org/pascalduez/react-module-boilerplate/jobs/280622034

[ljharb]

That's due to a poor decision yarn made; npm proper doesn't fail when "engines" isn't met. I'd suggest using npm instead.

Either way, I've filed aweary/rst-selector-parser#8