Keep letter case in routing

Author: ije

lib/helpers.ts

@@ -8,7 +8,7 @@ export const builtinModuleExts = ["tsx", "ts", "mts", "jsx", "js", "mjs"];
 export function matchRoutes(url: URL, routes: Route[]): [ret: URLPatternResult, route: RouteMeta][] {
   let { pathname } = url;
   if (pathname !== "/") {
-    pathname = util.trimSuffix(url.pathname, "/").toLowerCase();
+    pathname = util.trimSuffix(url.pathname, "/");
   }
   const matches: [ret: URLPatternResult, route: RouteMeta][] = [];
   if (routes.length > 0) {

lib/util.ts

@@ -66,7 +66,6 @@ export default {
   splitPath(path: string): string[] {
     return path
       .split(/[\/\\]+/g)
-      .map((p) => p.trim())
       .filter((p) => p !== "" && p !== ".")
       .reduce((slice, p) => {
         if (p === "..") {

server/routing.ts

@@ -97,7 +97,6 @@ export function toRouteRegExp(config: string | RoutesConfig): RouteRegExp {
     exec: (filename: string): URLPatternInput | null => {
       if (reg.test(filename)) {
         const parts = util.splitPath(util.trimPrefix(filename, prefix)).map((part) => {
-          part = part.toLowerCase();
           // replace `/p/[...path]` to `/p/:path+`
           if (part.startsWith("[...") && part.startsWith("]") && part.length > 5) {
             return ":" + part.slice(4, -1) + "+";