Okay cool, so this was an error that was happening *only* when building
assets for production: Sass's CSS minifier isn't familiar with all
modern CSS syntax (I think is the issue?), and so errors on things that
are actually totally okay.
I had previously worked around this in `swf_assets/show.css` with an
equivalent syntax that Sass recognized. But in this latest case with
the new `fonts.css.erb`, it was upset about the `src` list for the
fonts, and I don't know a workaround for that.
So, let's just disable Sass's CSS minification for now. I imagine the
difference isn't huge when CSS compresses just fine with gzip anyway?
(Most of what you can "minify" in CSS is whitespace, and that largely
seems silly to me when gzip is running.)
When I run `bin/deploy:precompile` on the previous version, I get an
error from libsass that `vw` and `vh` are incompatible units. I don't
get this error in development, only when compiling for production.
My inference is:
1. For the production build, Sass is trying to preprocess even non-SASS
files, maybe to help minify them?
2. In Sass, their `min()` existed before CSS's `min()`, so it's
treating it Like That, and returning a reasonable-in-some-cases-but-
not-here error that `min(100vw, 100vh)` can't be *precomputed*.
Anyway, wrapping it in `calc()` isn't a *problem*, and helps the Sass
compiler not try to precompute it, so. Okay!
https://github.com/sass/node-sass/issues/2815#issuecomment-575926329
This doesn't actually really matter, because this doesn't actually get
used in the app right now? But I figure, hey it's not hard to maintain,
let's just do it for consistency!
Not using this on the item page preview yet, but we will!
I like this approach over e.g. a web component specifically for the
sandboxing: while I don't exactly *distrust* JS that we're loading from
Neopets.com, I don't like the idea of *any* part of the site that
executes arbitrary JS unsafely at runtime, even if we theoretically
trust where it theoretically came from. I don't want any failure
upstream to have effects on us!
I copied basically all of the JS from a related project
`impress-media-server` that I had spun up at one point, to investigate
similar embed techniques. Easy peasy drop-in-squeezy!
