fix(vue-app): handle missing payloads on full static

[atinux]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

In full static, we generate a payload.js for each route, expect for ignored pages.

When navigating on client-side to a page not statically generated, it will anyway try to fetch the payload, leading to a 404 error in the console:

This PR will create a manifest.js grouping all routes generated, so we can avoid fetching payloads for not generated routes.

Left to do:

• Generate a manifest.js instead with routes key inside (will be useful later on to add more fields)
• Check behaviour with router.base defined
• Add an option generate.manifest to disable the behaviour when in serverless (payload can be generated on-demand)
• Update the full static fixture and test the behaviour (instead of manual testing)

Fixes #7717

Checklist:

• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

[codecov-io]

Codecov Report

Merging #8314 (495c86a) into dev (2c6610c) will decrease coverage by 0.11%.
The diff coverage is 13.33%.

@@            Coverage Diff             @@
##              dev    #8314      +/-   ##
==========================================
- Coverage   68.70%   68.58%   -0.12%     
==========================================
  Files          91       91              
  Lines        3863     3871       +8     
  Branches     1051     1054       +3     
==========================================
+ Hits         2654     2655       +1     
- Misses        982      987       +5     
- Partials      227      229       +2     

Flag	Coverage Δ
unittests	68.58% <13.33%> (-0.12%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/vue-renderer/src/renderers/ssr.js	0.00% <0.00%> (ø)
packages/generator/src/generator.js	83.09% <25.00%> (-2.41%)	⬇️

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[pi0]

One more suggestion: We shall preload manifest.json chunk in renderer (SPA and SSR)

[danielroe]

It would be good to add the ability to check there is a newer version of code available on the server and (if so) refresh in the background.