Enhance performance and security across router and query parameter handling

[jkyberneees]

Changes:

• Optimize middleware processing in the next function for improved performance.
• Refactor cache initialization and management in the sequential router for better memory efficiency.
• Introduce advanced prototype pollution tests to ensure security against dangerous properties.
• Implement comprehensive performance tests for the router and query parameter parsing.
• Update package dependencies for improved stability and performance.

[Copilot]

Pull Request Overview

Enhance performance and security in routing and query‐parameter handling by optimizing middleware, cache, and sanitization.

• Optimized middleware chaining, cache initialization, and ID generation in the sequential router
• Refactored queryparams to use a frozen noop object, Set lookup for dangerous keys, and a single indexOf pass
• Added micro‐benchmarks, performance tests, and advanced prototype‐pollution tests; bumped DevDeps

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tooling/queryparams-benchmark.js	New micro‐benchmark script for query parameter parsing
tooling/prototype-pollution-test.js	Basic prototype pollution protection tests
tooling/performance-test.js	Comprehensive router and query param performance tests
tooling/advanced-pollution-test.js	Edge‐case prototype pollution tests
package.json	Updated “0http” and “mitata” versions
lib/utils/queryparams.js	Reworked parser with EMPTY_QUERY, DANGEROUS_PROPERTIES, and optimized loops
lib/utils/object.js	Removed unused object helper
lib/router/sequential.js	Refactored router: LRU cache settings, middleware use, and IDs
lib/next.js	Streamlined next() index handling and URL normalization

Comments suppressed due to low confidence (2)

lib/router/sequential.js:18

• [nitpick] Returning err.message directly to the client can leak internal details. Use a sanitized or generic error response in production environments.

res.end(err.message)

tooling/performance-test.js:15

• [nitpick] The 'Unlimited Cache' actually caps at 50k entries. Either rename the scenario or note the effective limit to prevent confusion.

{ name: 'Unlimited Cache', cacheSize: -1 },

[Copilot]

Pull Request Overview

Enhance router and query parameter handling by optimizing performance, improving security against prototype pollution, and expanding test coverage.

• Introduce micro-benchmarks and full performance test suites for query parsing and routing.
• Add advanced prototype pollution tests to validate security hardening.
• Refactor queryparams and sequential router initialization for memory and speed gains.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tooling/queryparams-benchmark.js	Added micro-benchmark script for query parameter parsing performance
tooling/prototype-pollution-test.js	Added basic prototype pollution protection test script
tooling/performance-test.js	Added comprehensive router and query parsing performance test suite
tooling/advanced-pollution-test.js	Added advanced edge-case prototype pollution protection tests
package.json	Bumped 0http and mitata devDependency versions
lib/utils/queryparams.js	Refactored query parameter parser with dangerous-property filtering and fast paths
lib/utils/object.js	Removed unused utility module
lib/router/sequential.js	Refactored router initialization, cache setup, and middleware handling for speed
lib/next.js	Tweaked middleware chain index logic and optimized hot-path URL manipulation

Comments suppressed due to low confidence (2)

lib/router/sequential.js:186

• The shorthand router.on passes the handlers array as a single argument to router.add, rather than spreading them. Change to router.add(method, pattern, ...handlers) to ensure each handler is registered correctly.

router.on = (method, pattern, ...handlers) => router.add(method, pattern, handlers)

lib/router/sequential.js:19

• Sending err.message directly in production may leak sensitive information. Consider replacing it with a generic error message and logging the actual error.server-side.

res.end(err.message)

[Copilot]

Pull Request Overview

This PR enhances performance optimizations and security hardening across the router and query parameter parsing layers, and adds comprehensive benchmarking and prototype pollution tests.

• Optimizes middleware chaining, cache initialization, and query parameter parsing for speed and memory efficiency.
• Introduces advanced prototype pollution test scripts and comprehensive performance/benchmark tooling.
• Updates package dependencies to newer, more stable versions.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tooling/queryparams-benchmark.js	Adds micro-benchmark for query parameter parsing performance
tooling/prototype-pollution-test.js	Adds script to verify basic prototype pollution protections
tooling/performance-test.js	Implements a comprehensive performance test suite for routing
tooling/advanced-pollution-test.js	Adds edge-case prototype pollution tests
package.json	Bumps dependency versions
lib/utils/queryparams.js	Refactors and optimizes query parameter parsing with pollution guards
lib/utils/object.js	Removes unused object utility
lib/router/sequential.js	Refactors router initialization, caching, and middleware handling
lib/next.js	Optimizes next() middleware chain handling

Comments suppressed due to low confidence (4)

lib/router/sequential.js:19

• The default error handler exposes err.message directly in the response, which may leak sensitive implementation details. Consider returning a generic error message and logging the full error server-side.

res.end(err.message)

tooling/performance-test.js:17

• [nitpick] The label 'Unlimited Cache' is misleading since cacheSize < 0 is capped at 50,000 entries. Consider renaming to 'High-Capacity Cache' or documenting the actual limit.

{ name: 'Unlimited Cache', cacheSize: -1 },

tooling/queryparams-benchmark.js:56

• [nitpick] The benchmark script prints the parsed query result but does not assert correctness. Adding assertions against expected query shapes would help catch parsing regressions during benchmarking.

queryparams(req, url)

tooling/prototype-pollution-test.js:15

• Registering the same route handler before each test causes handlers to accumulate, leading to unexpected behavior across test cases. Consider creating a fresh router or clearing existing handlers inside the loop for each test case.

router.get('/test', (req, res) => {

[Copilot]

Pull Request Overview

This PR improves the performance and security of the router and query parameter handling by optimizing middleware processing, enhancing cache management, and expanding security tests against prototype pollution. Key changes include:

• New benchmark and performance test scripts for query parameter parsing and router performance.
• Comprehensive prototype pollution and advanced security tests.
• Multiple optimizations and refactorings in router lookup, query parameter parsing, and middleware chaining.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tooling/queryparams-benchmark.js	Added micro-benchmarks for query parameters processing
tooling/prototype-pollution-test.js	Introduced tests to verify prototype pollution protection
tooling/performance-test.js	Added comprehensive performance and memory usage tests
tooling/advanced-pollution-test.js	Expanded prototype pollution tests with edge cases
package.json	Updated dependencies for stability and performance
lib/utils/queryparams.js	Optimized query parameter parsing with enhanced prototype safety
lib/utils/object.js	Removed unused helper module
lib/router/sequential.js	Refactored router setup with improved cache, nested routing, and cleanup middleware
lib/next.js	Optimized middleware chaining and URL processing

Comments suppressed due to low confidence (1)

lib/router/sequential.js:118

• [nitpick] Using 'delete' for property removal here is efficient; however, verify that removing req.preRouterUrl and req.preRouterPath does not inadvertently impact later middleware that might expect these properties.

delete req.preRouterUrl

[Copilot]

Pull Request Overview

This PR enhances performance and security across router and query parameter handling. Key changes include:

• Optimizing middleware processing and caching in the sequential router.
• Adding comprehensive performance and advanced prototype pollution tests.
• Refactoring query parameter parsing for efficient and secure processing.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tooling/queryparams-benchmark.js	Added micro-benchmarks for query parameter parsing performance.
tooling/prototype-pollution-test.js	Introduced prototype pollution tests to verify security.
tooling/performance-test.js	Implemented a comprehensive performance test suite for router.
tooling/advanced-pollution-test.js	Added advanced tests covering edge cases for prototype pollution.
package.json	Updated dependencies for improved stability and performance.
lib/utils/queryparams.js	Optimized query parameter parsing with enhanced prototype protection.
lib/utils/object.js	Removed unused utility file to reduce code redundancy.
lib/router/sequential.js	Refactored caching, middleware chaining, and router use for efficiency.
lib/next.js	Improved middleware chain handling and index incrementation.

Comments suppressed due to low confidence (1)

lib/next.js:27

• The change from using index++ to passing index + 1 in the step callback improves clarity; please verify that this alteration preserves the intended middleware execution order, especially in asynchronous scenarios.

      : next(middlewares, req, res, index + 1, routers, defaultRoute, errorHandler)

[Copilot]

Consider normalizing req.method (e.g., using toUpperCase()) when constructing the cache key to ensure consistency regardless of method casing.

Suggested change

	const reqCacheKey = req.method + req.path
	const reqCacheKey = req.method.toUpperCase() + req.path

[Copilot]

[nitpick] Consider expanding or clarifying this ESLint bypass comment to explain the rationale behind using the regex split for parameter names, improving maintainability for future contributors.