feat: server.timing for Server-Timing

[clarkdo]

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

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• 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 #4800 into dev will decrease coverage by 0.04%.
The diff coverage is 88.88%.

@@            Coverage Diff             @@
##              dev    #4800      +/-   ##
==========================================
- Coverage   91.78%   91.74%   -0.05%     
==========================================
  Files          67       68       +1     
  Lines        2289     2325      +36     
  Branches      569      578       +9     
==========================================
+ Hits         2101     2133      +32     
- Misses        170      174       +4     
  Partials       18       18

Impacted Files	Coverage Δ
packages/config/src/config/server.js	100% <ø> (ø)	⬆️
packages/server/src/server.js	94.31% <100%> (+0.13%)	⬆️
packages/server/src/middleware/timing.js	84.21% <84.21%> (ø)
packages/utils/src/timer.js	96.42% <93.33%> (-3.58%)	⬇️

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[pi0]

Cool! @clarkdo 👍

[pi0]

Mini docs:

Enabled server.timing option (disabled by default) adds a middleware to measure SSR generate time and add it to headers ('Server-Timing')

server.timing can be also an object for providing options. Currently only supported one is total. (I don't know exact use case)

[clarkdo]

Doc pr: nuxt/docs#1115

[fatlinesofcode]

@clarkdo this works great for when i used nuxt dev but i cant see the timing when i used production e.g. nuxt build && nuxt start

If there something else we have to do get the timings in production mode?

[clarkdo]

@fatlinesofcode Hi, can you provide a reproducible repo?

[fatlinesofcode]

hi @clarkdo thanks for the reply.

I forked the hello world repo and im able to replicate the issue
https://codesandbox.io/s/example-hello-world-3q0d6

When running a lighthouse audit i can see the timing measure in the report using dev but not in production.

[fatlinesofcode]

example in dev mode
https://codesandbox.io/s/example-hello-world-7z1fk

[clarkdo]

Thanks, I’ll look into it within this week🙏