fix(vitePreprocess): remove dangling pure annotations #609
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see sveltejs/kit#9492
This is a workaround, the actual cause is the svelte compiler moving inline pure annotation comments to the end of a line, so that the subsequent bundling step associates them with a different node, possibly causing code to be removed that should have been preserved or otherwise altering the build output.
/* @__PURE__ */comments that are at the end of a line are being replaced with the same amount of spaces so that character count/sourcemaps remain unaffected.