refactor(create-react-router): use native Fetch

[MichaelDeBoey]

As mentioned in remix-run/web-std-io#42 (comment), we probably don't need to use the agent option, so we can just use native Fetch API completely

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I'm sure people from the wider @e18e ecosystem cleanup (like @43081j, @benmccann, @Fuzzyma, @outslept & @talentlessguy) will be very happy to see these kind of changes as well

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[MichaelDeBoey]

Tests are failing because we don't support env var proxy usage anymore with this change.

Not sure if this is a use-case we want to support tbh 🤔
Imo, this is a use-case that wouldn't really occur IRL

CC/ @markdalgleish is there any specific use-case you had in mind when implementing this?

[timdorr]

FYI, this was added way back in remix-run/remix#4159

[timdorr]

And note this may be less of an issue now that Node natively supports proxies: https://nodejs.org/en/blog/release/v24.5.0#built-in-proxy-support-in-request-and-agent

[MichaelDeBoey]

@timdorr We're still supporting Node v20 (even Node v18 for create-react-router), so we can't rely on native proxy support

[timdorr]

I know, I'm just saying there's a "fix" for users that might need support for proxies.

Alternatively, we could import a version of unidici that supports proxies as well.

[brophdawg11]

Can we just do nothing? create-react-router is working fine today on the current version of @remix-run/web-fetch. This all stemmed from chatter on remix-run/web-std-io#42, which we can just close because we don't need it. We can mark the repo as deprecated/maintenance mode, etc. But I don't think that we need to do anything to RRv7 here.

[timdorr]

Since create-react-router is normally run through npx and installed for each usage, the install size actually does make a notable impact on performance. @remix-run/web-fetch and proxy-agent bring 73 dependencies and about 29MB of data into that installation process, so not anything insignificant.

It comes at a cost of not supporting proxy users running node < 24.5.0, so that's really the decision to be made here. Personally, I think it's worth it.

[MichaelDeBoey]

I'm with @timdorr here and I think the benefits are greater than the drawbacks imo.

[talentlessguy]

Couldn't it be conditionally installed and used depending on node version? or it's something not really possible with node

[timdorr]

No, this is part of the package.json, so there's no ability to make something optionally installed in that context.

[brophdawg11]

yeah I don't know what the usage is for proxy users, but it sounds like it would be a breaking change so it's probably a non-starter. No one has ever complained about the execution time of npx create-react-router AFAIK so this feels fine to wait for v8 to me.