Added support for brotli ('br') content-encoding

[danielgindi]

expressjs/compression#172

https://medium.com/oyotech/how-brotli-compression-gave-us-37-latency-improvement-14d41e50fee4
https://caniuse.com/#feat=brotli

(Originally #403)

[danielgindi]

How are we doing?

[UlisesGascon]

LGTM @danielgindi!

Thanks fo the links attached to the PR. I will love to be able to try that compression in my next project 💪

[danielgindi]

LGTM @danielgindi!

Thanks fo the links attached to the PR. I will love to be able to try that compression in my next project 💪

Yeah this brotli is truly amazing :)

Btw we have a PR in the compression repo, to allow responses to be encoded too. It's two sides of the same coin

[dougwilson]

I moved over one comment that was still outstanding from the first repo and a general comment to make sure our detection makes sense from the noode.js project.

[danielgindi]

@dougwilson Have you noticed that we suddenly have a "leak" in the older node versions in CI?
These happens without any apparent reason, and the change in the code was insignificant, only DRYed a throw statement.
That's why I disabled that notification to begin with.

[danielgindi]

@dougwilson Anything preventing this from being published?

[ghost]

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[ghost]

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[ghost]

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[ignlg]

Is this feature stuck for some specific reason? Is there something that can be done to fix it?

[rubiin]

lgtm

[wesleytodd]

@danielgindi I re-targeted this to the 2.0 branch where we are preparing the major release for use in express@5. If you are interested in resolving the remaining threads and re-basing it onto 2.x that would be awesome. If not I can take care of it when sometime next week when we work on landing the final changes for the v2 release.