- shard runtime tests for better use of Vite's test parallelization
- merge custom element and other browser tests to run in one test suite and use esbuild in it
- on some setups only generate code output when test fails
Also swap out the require hook hacks with a less-hacky-but-still-somewhat-hacky loader for the Svelte files
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Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
Co-authored-by: Rich Harris <richard.a.harris@gmail.com>
