fix!: enabled SSR by default and opt-out experimental state

[antfu]

Resolved #185, Close #189

The problem of #185 is caused by the check ignores the check for ssr: false and will also disable the server for client build.

So I guess maybe we could take the chance to respect the ssr: false option in the top-level nuxt config. Giving the SSR has been improved quite a lot since the previous releases, plus this package itself is marked experimental anyway. I'd feel the SSR support is kinda good enough to not be the "experimental-in-experimental" thing. Which this change, this PR makes the behavior less confusing and a bit more robust.

[codecov-commenter]

Codecov Report

Merging #200 (0ffb71a) into main (63586ee) will increase coverage by 1.96%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #200      +/-   ##
==========================================
+ Coverage   76.92%   78.88%   +1.96%     
==========================================
  Files          12       12              
  Lines         260      251       -9     
  Branches       57       52       -5     
==========================================
- Hits          200      198       -2     
+ Misses         60       53       -7     

Impacted Files	Coverage Δ
src/index.ts	87.50% <ø> (+14.32%)	⬆️
test/fixture/nuxt.config.js	100.00% <ø> (ø)

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[pi0]

Hi @antfu.

Actually, the module itself (with client-build) is getting more stable to be used in all nuxt2 projects but SSR implementation is still unstable and hacky:

• We are still using a workaround for vue2 plugin, which I guess also has no test suit covering SSR build
• Depending on vite's rollup build and using two instances for server-side rendering in development, is probably not the best option. Ideally we should switch to vite builder (and vite plugins receive ssr flag). Doing this early introduces breaking changes when we actually swtich.

Also supporting SPA mode with disabled ssr (#185) should be anyway done as is a nuxt feature regardless of what default we use and #189 is probably not the best workaround :)

I hope this makes sense and we can merge this change when issues above are solved :)