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This is mostly uncommenting or redoing stuff that was already here from #1214. This PR includes:
Note on code splitting
We were doing code splitting by dynamically importing page components for pages with large libraries (in this case Recharts). When there was only one (the instance metrics tab) this had a reasonable result: a decent-sized
MetricsTab.jsfile split out from the mainapp.jsHowever, it turns out Vite is smarter than I thought, and once I added two more pages using Recharts, we got this: Vite knows all the pages have
TimeSeriesChartin common, so it automatically extracts that into its own separate file, leaving all the page-specific files very small, like 1-2 KB. There's no point in having separate files for them if they're small!So, I changed it so the pages are regular imports and inside they import
TimeSeriesChartdynamically, which means onlyTimeSeriesChartgets its own file.