feat(deps)!: update express to v5

[chenjiahan]

https://expressjs.com/2024/10/15/v5-release.html

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[gemini-code-assist]

Summary of Changes

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This pull request focuses on a significant infrastructure upgrade by migrating the project's Express framework to its fifth major version. This update involves not only bumping the core Express package but also meticulously updating its associated type definitions and a cascade of underlying dependencies to maintain compatibility and leverage the latest features and improvements offered by Express v5. The changes ensure the application remains robust and aligned with modern web development practices.

Highlights

• Express v5 Upgrade: The primary change is the upgrade of the express dependency to version 5.2.1, along with its corresponding TypeScript type definitions (@types/express) to 5.0.6. This is a major version bump, indicating potential breaking changes and new features.
• Dependency Resolution Updates: The pnpm-lock.yaml file reflects extensive updates across numerous transitive dependencies. This includes updates to middleware like body-parser, finalhandler, send, serve-static, and various utility packages, ensuring compatibility with Express v5.
• Middleware Handling Adjustment: A minor but significant change was made in src/server.ts to explicitly return after calling proxyMiddleware. This adjustment likely addresses a change in how middleware functions are expected to handle control flow in Express v5.

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Changelog

• package.json
  • Updated express dependency from ^4.22.1 to ^5.2.1.
  • Updated @types/express dependency from ^4.17.25 to ^5.0.6.
  • Removed @types/express from devDependencies.
• pnpm-lock.yaml
  • Updated resolutions for express and @types/express to their new major versions.
  • Removed @types/express-serve-static-core from dependencies.
  • Updated body-parser from 1.20.3 to 2.2.2.
  • Updated content-disposition from 0.5.4 to 1.0.1.
  • Updated cookie-signature from 1.0.6 to 1.2.2.
  • Removed array-flatten and destroy packages.
  • Updated finalhandler from 1.3.1 to 2.1.1.
  • Updated fresh from 0.5.2 to 2.0.0.
  • Removed http-errors@2.0.0 entry.
  • Updated iconv-lite from 0.4.24 to 0.7.2.
  • Added is-promise@4.0.0 package.
  • Updated media-typer from 0.3.0 to 1.1.0.
  • Updated merge-descriptors from 1.0.3 to 2.0.0.
  • Updated mime-types from 2.1.35 to 3.0.2.
  • Added negotiator@1.0.0 package.
  • Updated path-to-regexp from 0.1.12 to 8.3.0.
  • Updated raw-body from 2.5.2 to 3.0.2.
  • Added router@2.2.0 package.
  • Updated send from 0.19.0 to 1.2.1.
  • Updated serve-static from 1.16.2 to 2.2.1.
  • Removed statuses@2.0.1 entry.
  • Updated type-is from 1.6.18 to 2.0.1.
• src/server.ts
  • Modified proxyMiddleware call to explicitly return after execution, aligning with potential changes in Express v5 middleware handling.

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[gemini-code-assist]

Code Review

This pull request updates Express to version 5. This is a major update with breaking changes, and my review focuses on ensuring the migration is correct and all related dependencies are compatible.

I've identified a couple of critical issues:

• The http-proxy-middleware package needs to be updated to a version compatible with Express v5. The current version is for Express v4.
• The way the proxy middleware is called in src/server.ts is incorrect for Express v5's async handling and could lead to issues.

Additionally, @types/express is no longer needed with Express v5 and should be removed.

Please see my detailed comments for suggestions on how to address these points.

[gemini-code-assist]

This change incorrectly handles the async proxy middleware in Express v5. Instead of a fire-and-forget call, you should await the proxyMiddleware promise to ensure the request is fully handled, including any asynchronous operations and error handling.

The root cause is that http-proxy-middleware@2 is not compatible with Express v5. You should update http-proxy-middleware to ^3.0.0 in package.json, which is designed for Express v5.

After updating the package, you can fix this line as follows:

Suggested change

	proxyMiddleware(req, res, next);
	return;
	await proxyMiddleware(req, res, next);

[Copilot]

Pull request overview

Updates the dev server’s Express dependency to the Express v5 major line, aligning runtime and type dependencies with the new Express API and its transitive dependency set.

Changes:

• Bump express to ^5.2.1 and @types/express to ^5.0.6.
• Adjust proxy middleware invocation in src/server.ts for the updated middleware typing/behavior.
• Refresh pnpm-lock.yaml to reflect Express v5’s updated dependency graph.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/server.ts	Tweaks how the proxy middleware is invoked under the proxy handler path.
package.json	Updates Express and Express type dependencies; removes redundant devDependency entries.
pnpm-lock.yaml	Lockfile updates for Express v5 and related transitive upgrades.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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