refactor(url/slug): delete unnecessary args

__tests__/unit/utils/slug.test.ts

@@ -1,24 +1,10 @@
 import { expect, test } from "vitest";
 import { sluggize } from "../../../src/utils/url";
 
-test('should sluggize from string array - without prefix and fallback option', () => {
-  expect(sluggize(['foo', 'bar'])).toEqual('/foo/bar');
+test('should sluggize from array', () => {
+  expect(sluggize(['foo', 'bar'])).toEqual('foo/bar');
 });
 
-test('should sluggize from number array - without prefix and fallback option', () => {
-  expect(sluggize([1, 2])).toEqual('/1/2');
+test('should sluggize from array - contains double slashes', () => {
+  expect(sluggize(['foo//bar', '/hoge/', '/piyo'])).toEqual('foo/bar/hoge/piyo');
 });
-
-test('should sluggize from array - without fallback option', () => {
-  expect(sluggize(['foo', 'bar'], '_prefix')).toEqual('/_prefix/foo/bar');
-});
-
-/* TODO: fix
-test('should sluggize returns fallback (undefined) if slug can not convert to array', () => {
-  expect(sluggize({'hoge': 'piyo'}, '_prefix')).toEqual(undefined);
-});
-
-test('should sluggize returns fallback string if slug can not convert to array', () => {
-  expect(sluggize({'hoge': 'piyo'}, '_prefix', 'fallback_str')).toEqual('fallback_str');
-});
-*/

src/app/articles/[...slug]/page.tsx

@@ -35,7 +35,7 @@ const cachedFindByPath = cache(async (path: string) => {
 
 // https://nextjs.org/docs/app/building-your-application/data-fetching/fetching-caching-and-revalidating#opting-out-of-data-caching
 export async function generateMetadata({ params: { slug }}: { params: { slug: Array<string> }}): Promise<Metadata> {
-  const sluggized = await sluggize(slug, PREFIX_URL);
+  const sluggized = await sluggize([PREFIX_URL].concat(slug));
   const content = await cachedFindByPath(sluggized);
   return generateForArticleOrPage(sluggized ,content.body);
 }
@@ -54,7 +54,7 @@ async function handler(req: any) {
   if (isIgnoreRequest(req.params.slug.join("/"))) {
     return notFound();
   }
-  const sluggized = await sluggize(req.params.slug, PREFIX_URL);
+  const sluggized = await sluggize([PREFIX_URL].concat(req.params.slug));
   const response: ContentResponseWithFetchResponse = await cachedFindByPath(sluggized);
 
   const content: Content = {

src/utils/url.ts

@@ -8,23 +8,14 @@ export function fullUrl(slug: string, trailingSlash: boolean = false): string {
   return new URL(s, url).href
 }
 
-// FIXME: messy code (I'm tired to fight wiht TS type)
+// FIXME
 export function sluggize(
   slug: Array<string> | string,  // NOTE: Next.js request context seems <any>.
-  prefix: string | undefined = undefined,
-  fallback: string | undefined = undefined
 ) {
-  try {
-    if (slug instanceof Array) {
-      const p = prefix === undefined ? undefined : '/' + prefix;
-      const s = slug as Array<string>;
-      const arr = [p].concat(s);
-      return arr.join('/').replace(/\/{2,}/g, '/');
-    } else {
-      return slug;
-    }
-  } catch {
-    return fallback;
+  if (slug instanceof Array) {
+    return slug.join('/').replace(/\/{2,}/g, '/');
+  } else {
+    return slug;
   }
 }