Replace __VERSION__ with actual version number

[PuruVJ]

Describe the problem

Currently, svelte/compiler exports VERSION with type __VERSION__. It causes mismatch like these in upcoming svelte.dev

Describe the proposed solution

It'd be great to export it with the current svelte version number. Maybe something in the rollup config? rollup-plugin-replace

Alternatives considered

Let it be? 🤷

Importance

nice to have

[gtm-nayan]

It probably should be exported with just the type string, the primary use for the version field IMO would be using it for feature detection, and if it's the literal version string, typescript will complain along the lines of

This comparison appears to be unintentional because the types '"3.58.0"' and '...' have no overlap.

if you try to compare the version string with something.

[PuruVJ]

Aha! Makes sense. Yeah I think string would be a better type in that case

[Conduitry]

Types fixed in 3.59.0.