[lighthouse] add performance budget docs

[kaycebasques]

What's changed, or what was fixed?

• adds official documentation for RFC: Add support for Performance Budgets GoogleChrome/lighthouse#6053

Fixes: N/A

Target Live Date: 2019-05-07

• This has been reviewed and approved by @addyosmani or @khempenius
• I have run npm test locally and all tests pass.
• I have added the appropriate type-something label.
• I've staged the site and manually verified that my content displays correctly.

CC: @petele

[addyosmani]

Thank you so much for getting this content written up, Kayce! A quick sanity-check: are the Lighthouse performance audit docs moving to web.dev for next week or is the canonical source going to continue to be /web?

[kaycebasques]

I think that's the long-term plan but wasn't aware of this being a requirement right now. Since the rest of the Lighthouse report UI won't be linking to web.dev next week, as far as I'm aware, I'd suggest keeping it consistent by having it all on /web for now. I might be wrong about all this though so let's get @paulirish & @Meggin in here...

[robdodson]

@addyosmani @kaycebasques I think if this is only available from Lighthouse on the command line then it should live on /web. We have audit docs on web.dev but that's because they're relating directly back to the tool running on web.dev/measure.

[Meggin]

We are in transition... best to keep tooling on /web... at least for now.

[addyosmani]

That sounds reasonable. Thanks for confirming!

…

On Thu, May 2, 2019, 8:30 PM Meggin Kearney ***@***.***> wrote: We are in transition... best to keep tooling on /web... at least for now. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#7561 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAA3C2NWYURIIAM56EGTPYDPTOWUBANCNFSM4HJRSM3Q> .

[paulirish]

This lgtm.

I made a few edits: 91e4dfe

[khempenius]

I noted a couple minor nits, but otherwise LGTM.

[WebFundBot]

Whoops!

There were 21 warnings that will prevent this PR from being merged. Please take a look, and either fix, or provide a justification for why they can't be fixed.

WARNINGS
src/content/en/tools/lighthouse/audits/budgets.md#L263 - Common typo found: 'javascript' Should it be 'JavaScript'?
src/content/en/tools/lighthouse/audits/budgets.md#L18 - Line must be at most 100 characters
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src/content/en/tools/lighthouse/audits/budgets.md#L256 - Line must be at most 100 characters

[WebFundBot]

🎉 This has been pushed live to https://developers.google.com/web/