ROpdebee
build: update minimum browser versions
We're using some ES2022 features, so let's make sure we compile to browsers that support those features, thus maybe transpiling less. Let's also configure TypeScript to use typings limited to those browsers, otherwise it might allow us to use things like Iterator#map, which are barely available in current browsers. That'll also avoid the Array#at situation from a
few years back.
Speaking of Array#at, seeing as all major browsers have supported it for several years now, let's start embracing it too.
nativejsx is throwing another spanner in the works. It depends on escodegen to output the transformed code back into a string, but escodegen hasn't been maintained in a while and doesn't support newer JS syntax, which is causing compilation to fail.
I think it's time to switch away from nativejsx. That needs to happen before this PR can pass.