feat(remix-express): remove dependency on `express`

[nicksrandall]

This PR removes express as a dependency from the "express" handler (using only vanilla http module). This allows the handler to be used by any "express like" router (like polka) or using http.createServer directly! This should improve remix's compatibility with many node based http server frameworks.

Example (using http.createServer & sirv)

import * as http from 'http';
import * as path from 'path';
import sirv from 'sirv';
import { createRequestHandler } from '@remix-run/express';

const BUILD_DIR = path.join(process.cwd(), "build");

const remixHandler = createRequestHandler({ build: require(BUILD_DIR) });

const server = http.createServer(sirv("public", {
	  maxAge: 3600,
	  setHeaders(res, pathname) {
		    if (pathname.startsWith("/build/")) {
		      res.setHeader("Cache-Control", "public, max-age=31536000, immutable");
		    }
	  },
	  onNoMatch: remixHandler
}));

server.listen(process.env.PORT || 3000);

Closes: #

• [ ] Docs
• [ ] Tests

Testing Strategy:

All tests pass.

[remix-cla-bot[bot]]

Hi @nicksrandall,

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- The Remix team

[remix-cla-bot[bot]]

Thank you for signing the Contributor License Agreement. Let's get this merged! 🥳

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 312f245f0c4abc22588e94235a433d94c3545b1e

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[chaance]

Looks like this PR got borked a bit with some unrelated changes related to .node files in https://github.com/remix-run/remix/pull/3234/commits/f724f0aaeaff9bbd30c3d62360409217deb3e20a. Mind fixing those up so we can take a look?

[nicksrandall]

This is the strangest thing but maybe I mixed up my PRs? This is code for a completely unrelated PR. Let me fix this.

[chaance]

@nicksrandall no worries, I've done the same 😅 Usually happens because you try to fix two issues on the same branch and accidentally end up force-pushing to the wrong one.

[nicksrandall]

Closing in favor of #5237