- Replace single quotes with backticks for consistency
- Add explicit express.RequestHandler return type
- Fix prettier formatting for template literals
- Improve code formatting and readability

fix(ssr): Improve URL sanitization and routing in serve.js for SSR

- Enhance `sanitizeUrl` function to comprehensively handle nested encodings, control characters, query parameters, hash fragments, and path traversal.
- Add iterative decoding in `sanitizeUrl` to support URLs with multiple encoding layers.
- Normalize URLs by stripping extraneous characters, collapsing redundant slashes, ensuring a leading slash, and conditionally removing trailing slashes.
- Implement `createMatchPathMiddleware` with modularized helpers:
  - `sanitizeUrl`: Cleans and normalizes URL paths.
  - `findMatchPath`: Safely finds a matching path with error handling.
  - `logMatch`: Logs match details if logging is enabled.
  - `handleError`: Centralized error handler for consistent logging and responses.
- Add caching for URL matches to improve performance.
- Add informative logs for matched paths, request durations, and errors.
- Ensure compatibility with various URL structures and improve security against path traversal vulnerabilities.
- Improve maintainability by breaking down the code into modular, reusable functions.

This commit addresses [Issue gatsbyjs#39010](gatsbyjs#39010) and enhances SSR handling for encoded URLs, improving both performance and robustness in the `serve.js` middleware.

Refactor the serve.ts file to improve URL handling and add support for SSL. This includes importing the 'http' and 'https' modules, creating a server based on the SSL configuration, and updating the startListening function to use the appropriate protocol. This change enhances the URL sanitization and routing in serve.js for SSR, and also handles encoded URLs in SSR for Gatsby. The code changes also fix linting issues and improve URL logging and error handling. The commit message follows the established convention of using a verb in the imperative mood, specifying the area of the code being modified, and providing a concise summary of the changes made.

Signed-off-by: Emmett Hoolahan <[email protected]>

…n/gatsby-issue-25207-fix into fix/39010-ssr-encoded-urls