Migrate css-has-pseudo

[romainmenke]

tricky migration

The browser script is definitely broken at this moment : https://unpkg.com/css-has-pseudo@2.0.0/browser.js

I personally think the rollup config was doing too much heavy lifting with find/replace.

function trimContentForBrowser () {
	return {
		name: 'trim-content-for-browser',
		renderChunk (code) {
			const updatedCode = code
				.replace(/'use strict';\n*/, '')
				.replace(/\n*module\.exports = cssHasPseudo;/, '');

			return updatedCode;
		}
	};
}

This can be done by splitting correctly and preparing one dist file intended to be imported and a separate one intended for CDN's.

---

You will see the rollup config's are escalating further, but I hope this is the last time we need to change them.

[Antonio-Laguna]

Nice work! I've left some comments here

[Antonio-Laguna]

Can we streamline this with the exports? Not a fan of requiring from dist but can discuss too!

[romainmenke]

https://nodejs.org/api/packages.html#exports-sugar

Supported since node 12, so we can do this!

[romainmenke]

I added this, but unsure if it is fully correct.

I also don't know if unpkg will pick this up?