Fix SPA routing and asset mime-typing #75
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WalkthroughThe changes refactor the backend structure by modularizing API routes, enhancing error handling, and improving static file serving. The Changes
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🧹 Nitpick comments (2)
backend/src/app.ts (2)
297-328: Consider validating file paths to prevent path traversalThe code constructs file paths by joining user input with a base directory. While
path.joinis used, there's still a risk of path traversal iffilenamecontains sequences like../.- const filename = c.req.path.replace("/static/js/", ""); - const filePath = path.join(__dirname, "public/static/js", filename); + const filename = c.req.path.replace("/static/js/", ""); + // Prevent path traversal attacks + if (filename.includes("..")) { + return c.notFound(); + } + const filePath = path.join(__dirname, "public/static/js", filename);Similar change should be applied to the CSS handler.
297-345: Consider extracting file serving logic to reduce duplicationThe JavaScript and CSS file serving logic is very similar and could be extracted into a helper function to reduce duplication.
+ // Helper function to serve files with specific MIME type + const serveFileWithMimeType = async (filePath: string, mimeType: string) => { + try { + const content = await readFile(filePath); + return (c: any) => c.newResponse(content, { + headers: { + "Content-Type": mimeType, + }, + }); + } catch (error) { + return (c: any) => c.notFound(); + } + }; + // Explicitly handle JS files with correct MIME type app.get("/static/js/*", async (c) => { const filename = c.req.path.replace("/static/js/", ""); const filePath = path.join(__dirname, "public/static/js", filename); - - try { - const content = await readFile(filePath); - return c.newResponse(content, { - headers: { - "Content-Type": "application/javascript", - }, - }); - } catch (error) { - return c.notFound(); - } + return await serveFileWithMimeType(filePath, "application/javascript")(c); });
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backend/src/app.ts(1 hunks)turbo.json(1 hunks)
🔇 Additional comments (5)
turbo.json (1)
11-11:❓ Verification inconclusive
Verify removal of "db:push" dependency is intentional
The build task no longer depends on
db:push, meaning builds will proceed without waiting for database schema changes to be pushed. This could make builds faster, but please ensure this doesn't create any issues if the build actually requires an up-to-date database schema.
🏁 Script executed:
#!/bin/bash # Check if there are any references in code that might indicate the build depends on db:push rg -i "db.*push.*before.*build" --type ts rg -i "database.*schema.*build" --type tsLength of output: 87
Below is an additional verification script to search for any references to
"db:push"across the entire repository. This broader search should help us verify that no part of the codebase inadvertently relies on a"db:push"dependency during builds.Please run the following script:
Next steps:
- If this search produces no results, it supports that the removal of the
"db:push"dependency inturbo.json(which now uses"dependsOn": ["^build"]) is intentional.- If any references are found, they should be reviewed to ensure that the build process does not require an updated database schema via
"db:push".Once the output of this comprehensive search is confirmed, please verify manually that the removal will not negatively impact the build process.
🏁 Script executed:
#!/bin/bash # Search the entire repository for any references to "db:push" rg -i "db:push"Length of output: 320
Verify Build Workflow Independence from "db:push"
Our repository-wide search confirms that thedb:pushtask is still defined in several places (e.g., inpackage.json,litefs.yml, andbackend/package.json), but the build task inturbo.jsonnow only relies on["^build"]rather than ondb:push. Moreover, searches in TypeScript files did not reveal any embedded dependencies linking the build process to an automatic database schema push.
- turbo.json (Line 11): The dependency now is
"dependsOn": ["^build"], indicating the removal of an explicitdb:pushdependency.- Other Config Sources: The
db:pushtask remains available for manual execution or other workflow steps, as seen inpackage.json,litefs.yml, andbackend/package.json.Please verify that this separation of concerns (i.e., excluding
db:pushfrom the automatic build dependency chain) is intentional for your project's workflow, ensuring that any required schema updates are managed appropriately elsewhere.backend/src/app.ts (4)
297-311: Good addition of explicit MIME type handling for JavaScript filesExplicitly setting Content-Type headers for JavaScript files ensures browsers interpret them correctly, which is crucial for SPA functionality. The proper error handling with 404 responses is also a good practice.
314-328: Good addition of explicit MIME type handling for CSS filesSimilar to the JavaScript handler, this ensures proper Content-Type headers for CSS files and correct error handling.
330-332: Good ordering of static file handlersPlacing the generic static file handlers after the specific ones ensures that the custom MIME type handling takes precedence.
338-345: Improved error handling for serving index.htmlAdding proper error handling with logging is a great improvement. This makes debugging easier and provides a more user-friendly error response when there's a problem loading the application.
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Actionable comments posted: 3
🧹 Nitpick comments (6)
backend/src/types/api.ts (1)
1-11: Good implementation of pagination schema using Zod!The schema correctly defines optional
limitandoffsetparameters as strings that contain only digits, which is appropriate for query parameters. This will ensure proper validation when processing pagination requests.I have a small suggestion for improvement:
Consider enhancing the schema by converting strings to numbers and adding range validation:
export const schemas = { pagination: z.object({ - limit: z.string().regex(/^\d+$/).optional(), - offset: z.string().regex(/^\d+$/).optional(), + limit: z.string().regex(/^\d+$/).transform(Number) + .refine(n => n > 0 && n <= 100, { message: "Limit must be between 1 and 100" }) + .optional(), + offset: z.string().regex(/^\d+$/).transform(Number) + .refine(n => n >= 0, { message: "Offset must be non-negative" }) + .optional(), }), };This would provide better type safety (returning numbers instead of strings) and prevent unreasonable pagination values.
backend/src/routes/api/index.ts (1)
22-23: Address the compatibility TODO for feed routesYou're currently using an alias route for compatibility, but it's worth investigating if both
/feedand/feedsendpoints are actually needed. Having duplicate routes can be confusing for API consumers.Consider either:
- Standardizing on one endpoint and providing deprecation notices for the other
- Implementing a proper redirection from one to the other
- Combining the logic as mentioned in your TODO
This would make the API more maintainable and consistent in the long run.
backend/src/routes/api/config.ts (1)
27-37: Consider making the feed route handler asyncAll other route handlers are async, but this one isn't despite likely performing similar operations.
-router.get("/:feedId", (c) => { +router.get("/:feedId", async (c) => { const context = c.get("context"); const feedId = c.req.param("feedId"); - const feed = context.configService.getFeedConfig(feedId); + const feed = await context.configService.getFeedConfig(feedId); if (!feed) { c.notFound(); } return c.json(feed); });If
getFeedConfigis actually synchronous, then the current implementation is fine, but consistency in API design is valuable.backend/src/routes/api/twitter.ts (1)
26-45: Input validation looks good, consider adding try/catchThe route uses proper Zod validation to ensure the tweet ID is in the correct format. The service availability check is correctly implemented.
However, the async operation at line 42 doesn't have explicit error handling. While errors might be caught by a global handler, consider adding a try/catch block for more specific error handling.
async (c) => { const context = c.get("context"); if (!context.twitterService) { throw serviceUnavailable("Twitter"); } const { tweetId } = c.req.valid("json"); + try { await context.twitterService.setLastCheckedTweetId(tweetId); return c.json({ success: true }); + } catch (error) { + logger.error(`Failed to set last tweet ID: ${error}`); + return c.json({ success: false, message: "Failed to update tweet ID" }, 500); + } },backend/src/routes/api/submission.ts (1)
40-57: Well-structured feed submission retrieval with filteringThe implementation correctly:
- Validates the feed exists before proceeding
- Retrieves submissions for the specified feed
- Applies optional filtering based on status
Consider adding pagination to this endpoint as well for consistency with the main submissions endpoint, especially if feeds can have many submissions.
backend/src/routes/api/feed.ts (1)
9-22: LGTM, but consider adding error handling.The GET endpoint correctly validates the feed existence before attempting to fetch submissions. However, there's no try/catch block around the database call. If
db.getSubmissionsByFeed()fails, the error will propagate uncaught.router.get("/:feedId", async (c) => { const context = c.get("context"); const feedId = c.req.param("feedId"); const feed = context.configService.getFeedConfig(feedId); if (!feed) { return c.notFound(); } - return c.json(await db.getSubmissionsByFeed(feedId)); + try { + const submissions = await db.getSubmissionsByFeed(feedId); + return c.json(submissions); + } catch (error) { + logger.error(`Error fetching submissions for feed ${feedId}:`, error); + return c.json({ error: "Failed to fetch submissions" }, 500); + } });
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📒 Files selected for processing (15)
backend/next.txt(0 hunks)backend/src/app.ts(3 hunks)backend/src/routes/api/config.ts(1 hunks)backend/src/routes/api/feed.ts(1 hunks)backend/src/routes/api/index.ts(1 hunks)backend/src/routes/api/leaderboard.ts(1 hunks)backend/src/routes/api/plugin.ts(1 hunks)backend/src/routes/api/submission.ts(1 hunks)backend/src/routes/api/test.ts(1 hunks)backend/src/routes/api/twitter.ts(1 hunks)backend/src/routes/static.ts(1 hunks)backend/src/types/api.ts(1 hunks)backend/src/types/app.ts(1 hunks)backend/src/utils/error.ts(1 hunks)memory-bank/activeContext.md(2 hunks)
💤 Files with no reviewable changes (1)
- backend/next.txt
✅ Files skipped from review due to trivial changes (1)
- backend/src/routes/api/test.ts
🔇 Additional comments (24)
backend/src/routes/api/plugin.ts (1)
10-14:❓ Verification inconclusive
Add error handling to plugin reload endpoint
The current implementation doesn't handle potential errors from the
reloadAllPluginsmethod, which could lead to unhandled promise rejections and improper error responses to clients.Implement a try-catch block to properly handle errors:
router.post("/reload", async (c) => { + try { const pluginService = PluginService.getInstance(); await pluginService.reloadAllPlugins(); return c.json({ success: true }); + } catch (error) { + console.error("Failed to reload plugins:", error); + return c.json({ success: false, error: "Failed to reload plugins" }, 500); + } });Also, consider whether this endpoint requires authentication, as plugin reloading may be a sensitive administrative operation:
🏁 Script executed:
#!/bin/bash # Check if there's any authentication middleware used elsewhere in the codebase # Search for authentication middleware patterns echo "Searching for authentication patterns in the codebase..." rg -A 3 -B 3 "authentication|authorize|middleware" --type tsLength of output: 962
Add error handling and consider authentication for the plugin reload endpoint.
Error Handling: Wrap the plugin reloading code in a try-catch block to catch potential errors from
reloadAllPlugins(). For example:router.post("/reload", async (c) => { + try { const pluginService = PluginService.getInstance(); await pluginService.reloadAllPlugins(); return c.json({ success: true }); + } catch (error) { + console.error("Failed to reload plugins:", error); + return c.json({ success: false, error: "Failed to reload plugins" }, 500); + } });Authentication Consideration: The shell script search did not reveal any authentication middleware applied to this endpoint. Given that plugin reloading is likely an administrative operation, please verify if adding an authentication check is necessary to better secure this route.
memory-bank/activeContext.md (2)
48-52: Well-documented backend improvementsThe additions clearly document the architectural improvements to the backend organization, which align with the code changes in this PR focused on modular routing and secure file serving.
83-83: Good addition to validated solutionsIncluding "Secure static file serving with proper MIME types" in the validated solutions section appropriately reflects the improvements made to static file handling.
backend/src/routes/api/index.ts (1)
1-26: Well-structured API route organizationThe modular organization of routes is clean and maintainable. Conditionally including test routes only in non-production environments is a good security practice.
backend/src/types/app.ts (1)
39-45: Good factory pattern for Hono app creationUsing a factory function to create
HonoAppinstances with proper typing is a clean approach that ensures type consistency throughout the application.backend/src/utils/error.ts (2)
22-41: Robust error handling implementationThe global error handler is well-implemented with proper logging and response formatting. Good security practice to not expose stack traces in production responses.
Consider adding a way to include more detailed error information in non-production environments to help with debugging:
return c.json( { error: "Internal Server Error", message: err.message, + ...(process.env.NODE_ENV !== 'production' && { stack: err.stack }), }, 500, );
46-50: Useful service unavailability helperThe
serviceUnavailablehelper function is a good abstraction that will promote consistent error responses across the application.backend/src/routes/api/config.ts (1)
1-39: Clean implementation of configuration endpointsThe configuration routes are well-organized with proper error handling for the case of a non-existent feed. The endpoints provide a logical API structure for retrieving various levels of configuration.
backend/src/routes/api/twitter.ts (2)
1-7: Good modular structure and dependency managementThe imports and router setup are well-organized, using the
HonoApp()factory function for consistency with the rest of the application.
12-21: LGTM, good service availability checkThe route correctly checks for Twitter service availability before proceeding and properly handles the response. The error handling using the
serviceUnavailableutility follows good practices.backend/src/app.ts (5)
2-16: Good refactoring of imports for modular architectureThe changes to imports reflect the modularization of the codebase, with API and static routes now being imported from dedicated modules. The addition of the logger middleware and centralized error handling is a good improvement.
68-70: Good simplification of app creationUsing the
HonoApp()factory function simplifies the app creation process and ensures consistent typing throughout the application.
77-81: Excellent centralized error handlingThe new centralized error handling approach using
app.onErrorand theerrorHandlerutility is a significant improvement over inline error handling in route definitions. This will make error handling more consistent and maintainable.
90-93: Good middleware and route organizationThe addition of the logger middleware and proper organization of API routes improves the maintainability of the codebase.
95-99: Improved static file serving configurationThe static file serving has been nicely refactored to use the new
configureStaticRoutesfunction, making the code more modular and maintainable.backend/src/routes/static.ts (4)
7-34: Robust implementation for secure file servingThe
serveFileWithMimeTypefunction is well-implemented with:
- Path traversal protection
- Proper error handling
- Correct MIME type headers
The security check at lines 17-20 is particularly important for preventing path traversal attacks, and the error handling at lines 30-33 ensures graceful failure.
45-70: Good MIME type handling for static assetsThe implementation correctly handles JavaScript and CSS files with appropriate MIME types, which addresses the PR objective of fixing asset mime-typing.
72-75: Effective use of built-in static file servingUsing the
serveStaticmiddleware for other static files is an efficient approach.
77-86: Good SPA routing implementationThe catch-all route serving
index.htmlproperly implements SPA routing, addressing the PR objective. The error handling is well done, with appropriate logging and user-friendly error messages.backend/src/routes/api/submission.ts (2)
12-21: Good pagination implementation with parameter validationThe route properly validates pagination parameters using Zod and correctly parses string query parameters to integers. This ensures robust API behavior.
26-35: Appropriate error handling for missing resourcesThe route correctly checks if a submission exists and returns a 404 response if not found, following RESTful API best practices.
backend/src/routes/api/feed.ts (3)
1-7: Implementation looks good.Clean imports and router setup using the
HonoApp()function. The code properly organizes dependencies by separating core services, type definitions, and utility functions.
24-44: The validation flow is well structured.Good job validating the feed existence and handling the edge case of no approved submissions. The code is clean and follows a logical flow.
63-66: Clean response and module export.The response format is simple and clear, and the router is correctly exported for use in other modules.
| router.get("/", async (c) => { | ||
| const leaderboard = db.getLeaderboard(); | ||
| return c.json(leaderboard); | ||
| }); |
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💡 Verification agent
🧩 Analysis chain
Add error handling and verify async requirement
The current implementation of the leaderboard endpoint doesn't handle potential errors from the database call. Additionally, the route handler is marked as async but the database call doesn't appear to use await.
Implement error handling and verify if the database call is asynchronous:
-router.get("/", async (c) => {
- const leaderboard = db.getLeaderboard();
- return c.json(leaderboard);
+router.get("/", async (c) => {
+ try {
+ // If getLeaderboard is asynchronous:
+ const leaderboard = await db.getLeaderboard();
+ // If getLeaderboard is synchronous:
+ // const leaderboard = db.getLeaderboard();
+ return c.json(leaderboard);
+ } catch (error) {
+ console.error("Failed to retrieve leaderboard:", error);
+ return c.json({ error: "Failed to retrieve leaderboard data" }, 500);
+ }
});Let's check if the getLeaderboard method is asynchronous:
🏁 Script executed:
#!/bin/bash
# Check the implementation of the getLeaderboard method
echo "Checking implementation of getLeaderboard method..."
rg -A 5 "getLeaderboard" --type tsLength of output: 1442
Subject: Leaderboard API – Add error handling and remove unnecessary async/await
We've confirmed via inspection of db.getLeaderboard() (located in backend/src/services/db/index.ts) that this method is synchronous and does not return a Promise. Therefore, while the route handler can remain marked as async (if needed elsewhere), there's no need to use await on this call. However, to safeguard against potential exceptions thrown from the database call, please wrap the invocation in a try-catch block.
Actionable changes:
-
In
backend/src/routes/api/leaderboard.ts, update the GET handler as follows:-router.get("/", async (c) => { - const leaderboard = db.getLeaderboard(); - return c.json(leaderboard); -}); +router.get("/", async (c) => { + try { + // Since getLeaderboard() is synchronous, no await is necessary. + const leaderboard = db.getLeaderboard(); + return c.json(leaderboard); + } catch (error) { + console.error("Failed to retrieve leaderboard:", error); + return c.json({ error: "Failed to retrieve leaderboard data" }, 500); + } +});
Please apply these changes so that unexpected errors are handled gracefully.
📝 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.
| router.get("/", async (c) => { | |
| const leaderboard = db.getLeaderboard(); | |
| return c.json(leaderboard); | |
| }); | |
| router.get("/", async (c) => { | |
| try { | |
| // Since getLeaderboard() is synchronous, no await is necessary. | |
| const leaderboard = db.getLeaderboard(); | |
| return c.json(leaderboard); | |
| } catch (error) { | |
| console.error("Failed to retrieve leaderboard:", error); | |
| return c.json({ error: "Failed to retrieve leaderboard data" }, 500); | |
| } | |
| }); |
| export interface AppContext { | ||
| twitterService: TwitterService | null; | ||
| submissionService: SubmissionService | null; | ||
| distributionService: DistributionService | null; | ||
| processorService: ProcessorService | null; | ||
| configService: ConfigService; | ||
| } |
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💡 Verification agent
🧩 Analysis chain
Consider handling nullable services consistently
Several services in AppContext can be null, which might lead to null reference issues if not properly checked throughout the codebase.
🏁 Script executed:
#!/bin/bash
# Check how null services are handled across the codebase
# Look for direct usage of these services without null checks
echo "Searching for potential null reference issues..."
rg -A 2 -B 2 "(twitterService|submissionService|distributionService|processorService)\." --type ts backend/srcLength of output: 30385
Action Required: Ensure Consistent Null Handling for Services
The current definition in backend/src/types/app.ts allows several services to be null, but the safety checks across the codebase are inconsistent. For instance, while the shutdown logic in backend/src/index.ts and some test cases verify the existence of a service before making calls, other parts (e.g., backend/src/routes/api/twitter.ts) invoke methods like getLastCheckedTweetId or setLastCheckedTweetId directly without first checking for a null reference. This discrepancy increases the risk for runtime null reference errors.
Recommended Actions:
-
Audit and Update Checks:
Review the usage oftwitterService,submissionService,distributionService, andprocessorServiceacross the codebase. Ensure that all method calls on these potentially nullable services are preceded by proper null checks or refactor the initialization flow to guarantee non-null values. -
Consider Type Refinements:
If certain services are always expected to be non-null at runtime after initialization, update the type definitions inbackend/src/types/app.tsaccordingly to reflect this invariant. Alternatively, enforce additional guard clauses where the services are used.
Please address these inconsistencies to prevent potential null reference issues.
| // Process each submission through stream output | ||
| let processed = 0; | ||
| if (!context.processorService) { | ||
| throw serviceUnavailable("Processor"); | ||
| } | ||
|
|
||
| for (const submission of approvedSubmissions) { | ||
| try { | ||
| if (feed.outputs.stream) { | ||
| await context.processorService.process(submission, feed.outputs.stream); | ||
| processed++; | ||
| } | ||
| } catch (error) { | ||
| logger.error(`Error processing submission ${submission.tweetId}:`, error); | ||
| } | ||
| } |
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🛠️ Refactor suggestion
Error handling implementation could be improved.
The code correctly checks for the existence of processorService before using it and has a try/catch block for each submission processing. However:
- The error thrown with
serviceUnavailable("Processor")will bypass your onError middleware since you're using it inside the route handler - There's no status update for processed submissions
// Process each submission through stream output
let processed = 0;
if (!context.processorService) {
- throw serviceUnavailable("Processor");
+ return c.json(
+ { error: "Processor service unavailable" },
+ 503
+ );
}
for (const submission of approvedSubmissions) {
try {
if (feed.outputs.stream) {
await context.processorService.process(submission, feed.outputs.stream);
+ // Update submission status to "processed" or similar
+ await db.updateSubmissionStatus(submission.id, "processed");
processed++;
}
} catch (error) {
logger.error(`Error processing submission ${submission.tweetId}:`, error);
}
}Committable suggestion skipped: line range outside the PR's diff.
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Actionable comments posted: 0
🧹 Nitpick comments (5)
backend/src/routes/api/twitter.ts (5)
13-30: Ensure consistent error handlingThe GET route has proper error handling, but consider enhancing it with more specific error types rather than using a generic 500 status code. Consider implementing HTTP status codes that better match the specific error conditions that might occur when retrieving the last tweet ID.
try { const lastTweetId = context.twitterService.getLastCheckedTweetId(); return c.json({ lastTweetId }); } catch (error) { logger.error(`Failed to get last tweet ID: ${error}`); return c.json( - { success: false, message: "Failed to retrieve last tweet ID" }, - 500, + { + success: false, + message: "Failed to retrieve last tweet ID", + error: error instanceof Error ? error.message : String(error) + }, + 500, ); }
16-18: Consider refactoring service availability check into middlewareBoth routes check for Twitter service availability in the same way. Consider extracting this check into a middleware function to reduce code duplication.
// Add this function before the routes + function requireTwitterService(c, next) { + const context = c.get("context"); + if (!context.twitterService) { + throw serviceUnavailable("Twitter"); + } + return next(); + } // Then update route definitions - router.get("/last-tweet-id", (c) => { + router.get("/last-tweet-id", requireTwitterService, (c) => {
13-14: Make GET route async for consistencyThe POST route is async but the GET route is not. For consistency, consider making both routes async or both non-async based on the nature of the service methods.
- router.get("/last-tweet-id", (c) => { + router.get("/last-tweet-id", async (c) => {
32-62: Standardize response formats across routesThe GET route returns
{ lastTweetId }while the POST route returns{ success: true }. For API consistency, consider standardizing the response format across all routes.// In the GET route - return c.json({ lastTweetId }); + return c.json({ success: true, lastTweetId }); // Or alternatively, change the POST route - return c.json({ success: true }); + return c.json({ success: true, tweetId });
40-41: Consider adding more constraints to tweet ID validationTwitter IDs are typically large numbers. Consider adding more specific validation constraints to ensure IDs are within acceptable ranges.
- tweetId: z.string().regex(/^\d+$/), + tweetId: z.string().regex(/^\d+$/).refine( + (id) => id.length > 0 && id.length <= 20, + { message: "Twitter ID must be between 1 and 20 digits" } + ),
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📒 Files selected for processing (3)
backend/src/routes/api/submission.ts(1 hunks)backend/src/routes/api/twitter.ts(1 hunks)backend/src/types/api.ts(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- backend/src/routes/api/submission.ts
- backend/src/types/api.ts
🔇 Additional comments (2)
backend/src/routes/api/twitter.ts (2)
1-6: LGTM: Well-structured importsThe imports are well-organized, grouping external dependencies first and then internal modules.
64-65: LGTM: Clean module exportThe module cleanly exports the router for use in other parts of the application.
Summary by CodeRabbit
New Features
Bug Fixes
Chores
Documentation