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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: defaults Review profile: CHILL Plan: Pro Run ID: 📒 Files selected for processing (1)
📝 WalkthroughWalkthroughAdds env-driven API host/port configuration, validates port values, wraps API server startup in try/catch with process exit on failure, adjusts shutdown to handle an optionally-uninitialized server, and changes the Next.js start script to run the standalone server binary. Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes Poem
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Actionable comments posted: 1
🧹 Nitpick comments (1)
packages/server/src/index.ts (1)
92-97: Resolve port once to avoid redundant calls.
resolveApiPort()is called twice—once for the server config and once for the log message. While functionally harmless, this is slightly inefficient and could theoretically diverge if the environment were modified between calls.♻️ Proposed refactor to resolve port once
+ const port = resolveApiPort(); const server = serve({ fetch: app.fetch, - port: resolveApiPort(), + port, }, () => { - log('INFO', `API server listening on http://localhost:${resolveApiPort()}`); + log('INFO', `API server listening on http://localhost:${port}`); });🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In `@packages/server/src/index.ts` around lines 92 - 97, Call resolveApiPort() once and reuse the value for both the serve() port option and the log message to avoid duplicate calls and potential divergence; assign the result to a local constant (e.g., const port = resolveApiPort()) before creating server (serve({... port }) ) and then use that same port variable in the log('INFO', ...) call, referencing the existing server creation block and the resolveApiPort function.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Inline comments:
In `@packages/main/src/index.ts`:
- Around line 218-224: The code currently assigns apiServer = startApiServer()
but only wraps synchronous errors; attach an 'error' event handler to the
returned server (apiServer) to catch async port-binding failures (e.g.,
EADDRINUSE) and log the error via log('ERROR', ...) and exit(1) as needed;
update the start-up sequence around startApiServer()/serve() so that after
apiServer is returned you call apiServer.on('error', handler) that inspects
err.code and handles the failure (logging and process.exit(1)) to prevent an
unhandled exception.
---
Nitpick comments:
In `@packages/server/src/index.ts`:
- Around line 92-97: Call resolveApiPort() once and reuse the value for both the
serve() port option and the log message to avoid duplicate calls and potential
divergence; assign the result to a local constant (e.g., const port =
resolveApiPort()) before creating server (serve({... port }) ) and then use that
same port variable in the log('INFO', ...) call, referencing the existing server
creation block and the resolveApiPort function.
ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro
Run ID: 7adfe42c-dcfb-42de-ac3c-3eac89f1376d
📒 Files selected for processing (3)
packages/main/src/index.tspackages/server/src/index.tszoobot-office/src/lib/api.ts
| let apiServer: http.Server; | ||
| try { | ||
| apiServer = startApiServer(); | ||
| } catch (error) { | ||
| log('ERROR', `Failed to start API server: ${(error as Error).message}`); | ||
| process.exit(1); | ||
| } |
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🧩 Analysis chain
🌐 Web query:
@hono/node-server serve function error handling EADDRINUSE
💡 Result:
The EADDRINUSE error in @hono/node-server's serve function occurs when attempting to bind to a port (default 3000) that is already in use by another process. This is a standard Node.js http.Server listen error, not specific to Hono. To handle it: 1. Identify and kill the process using the port: - macOS/Linux: lsof -i :3000 then kill -9 - Windows: netstat -ano | findstr :3000 then taskkill /PID /F - Or kill all Node processes: killall node (macOS/Linux) or taskkill /F /IM node.exe (Windows) 2. Use a different port: import { serve } from '@hono/node-server' import { Hono } from 'hono' const app = new Hono serve({ fetch: app.fetch, port: 3001 // or process.env.PORT || 3000 }) 3. For graceful handling, capture the returned server and add an error listener: const server = serve({ fetch: app.fetch, port: 3000 }) server.on('error', (err) => { if (err.code === 'EADDRINUSE') { console.error(Port 3000 is already in use. Try a different port.) process.exit(1) } }) No built-in EADDRINUSE handling exists in serve options per official docs. Hono's app.onError handles route-level errors, not server bind errors.
Citations:
- 1: https://oneuptime.com/blog/post/2026-01-25-fix-eaddrinuse-nodejs/view
- 2: https://stackoverflow.com/questions/9898372/how-to-fix-error-listen-eaddrinuse-while-using-nodejs
- 3: https://hono.dev/docs/getting-started/nodejs
- 4: https://stackoverflow.com/questions/4075287/node-express-eaddrinuse-address-already-in-use-how-can-i-stop-the-process
- 5: https://www.npmjs.com/package/@hono/node-server
- 6: https://github.com/honojs/node-server
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Add error handler for async port binding failures.
The serve() function from @hono/node-server returns synchronously, but the actual port binding happens asynchronously. The try/catch only catches synchronous errors like invalid port validation from resolveApiPort().
If the port is already in use (EADDRINUSE), the error will emit as an 'error' event on the server object and won't be caught by this try/catch, causing an unhandled exception.
🔧 Proposed fix
let apiServer: http.Server;
try {
apiServer = startApiServer();
+ apiServer.on('error', (err: NodeJS.ErrnoException) => {
+ log('ERROR', `API server error: ${err.message}`);
+ if (err.code === 'EADDRINUSE') {
+ log('ERROR', `Port already in use`);
+ }
+ process.exit(1);
+ });
} catch (error) {
log('ERROR', `Failed to start API server: ${(error as Error).message}`);
process.exit(1);
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| let apiServer: http.Server; | |
| try { | |
| apiServer = startApiServer(); | |
| } catch (error) { | |
| log('ERROR', `Failed to start API server: ${(error as Error).message}`); | |
| process.exit(1); | |
| } | |
| let apiServer: http.Server; | |
| try { | |
| apiServer = startApiServer(); | |
| apiServer.on('error', (err: NodeJS.ErrnoException) => { | |
| log('ERROR', `API server error: ${err.message}`); | |
| if (err.code === 'EADDRINUSE') { | |
| log('ERROR', `Port already in use`); | |
| } | |
| process.exit(1); | |
| }); | |
| } catch (error) { | |
| log('ERROR', `Failed to start API server: ${(error as Error).message}`); | |
| process.exit(1); | |
| } |
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In `@packages/main/src/index.ts` around lines 218 - 224, The code currently
assigns apiServer = startApiServer() but only wraps synchronous errors; attach
an 'error' event handler to the returned server (apiServer) to catch async
port-binding failures (e.g., EADDRINUSE) and log the error via log('ERROR', ...)
and exit(1) as needed; update the start-up sequence around
startApiServer()/serve() so that after apiServer is returned you call
apiServer.on('error', handler) that inspects err.code and handles the failure
(logging and process.exit(1)) to prevent an unhandled exception.
1 participant
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