yossy.devでisolatedDeclationを有効にしてtscの速度を測る

.gitignore

@@ -15,3 +15,6 @@ bun.lockb
 localhost-key.pem
 localhost.pem
 
+## typecheck:perfomance
+trace.json
+types.json

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+  "editor.defaultFormatter": "biomejs.biome",
+  "editor.codeActionsOnSave": {
+    "source.organizeImports.biome": "explicit",
+    "quickfix.biome": "explicit"
+  }
+}

app/global.d.ts

@@ -1,6 +1,6 @@
 import {} from "hono";
 
-type Head = {
+export type Head = {
   title?: string;
   description?: string;
   date?: string;

app/hooks/useDebounce.ts

@@ -1,6 +1,6 @@
 import { useEffect, useState } from "hono/jsx";
 
-export function useDebounce(value: number, delay: number) {
+export function useDebounce(value: number, delay: number): number {
   const [debouncedValue, setDebouncedValue] = useState(value);
 
   useEffect(() => {

app/libs/date.ts

@@ -4,7 +4,7 @@ const birthday = {
   date: 24,
 };
 
-export function getAge() {
+export function getAge(): number {
   const today = new Date();
   const thisYearsBirthday = new Date(
     today.getFullYear(),

app/libs/rss/rss.ts

@@ -11,7 +11,12 @@ function formatDate(utcDate: string) {
 }
 
 export const rssClient = {
-  find() {
+  find(): {
+    id: string;
+    title: string;
+    date: string;
+    link: string;
+  }[] {
     return zennRss.map((item) => ({
       id: item.guid,
       title: item.title,
@@ -20,7 +25,12 @@ export const rssClient = {
     }));
   },
 
-  findYoutube() {
+  findYoutube(): {
+    id: string;
+    title: string;
+    date: string;
+    link: string;
+  }[] {
     return youtubeRss.map((item) => ({
       id: item.id,
       title: item.title,
@@ -29,7 +39,12 @@ export const rssClient = {
     }));
   },
 
-  findSpeakerdeck() {
+  findSpeakerdeck(): {
+    id: string;
+    title: string;
+    date: string;
+    link: string;
+  }[] {
     return speakerdeckRss.map((item) => ({
       id: item.guid,
       title: item.title,

app/libs/vite-remark-toc-plugin.ts

@@ -6,7 +6,7 @@ interface Heading extends Element {
 }
 
 function rehypeTOC() {
-  return (tree: Root) => {
+  return (tree: Root): void => {
     const headings: Heading[] = [];
     visit(tree, "element", (node: Element) => {
       if (node.tagName === "h2" || node.tagName === "h3") {

app/routes/_renderer.tsx

@@ -1,3 +1,4 @@
+import type { MiddlewareHandler } from "hono";
 import { jsxRenderer } from "hono/jsx-renderer";
 import { Script } from "honox/server";
 import { LINK } from "../constants";
@@ -87,4 +88,4 @@ export default jsxRenderer(({ children, title, description }) => {
       </body>
     </html>
   );
-});
+}) satisfies MiddlewareHandler as MiddlewareHandler;

app/routes/all/index.tsx

@@ -1,4 +1,5 @@
 import { Fragment } from "hono/jsx";
+import type { JSX } from "hono/jsx/jsx-runtime";
 import { Heading } from "../../components/Heading";
 import { rssClient } from "../../libs/rss/rss";
 
@@ -13,7 +14,7 @@ type PostEntry = {
 
 const FIRST_BLOG_POST_YEAR = 2021;
 
-export default function AllContent() {
+export default function AllContent(): JSX.Element {
   const posts = import.meta.glob<{
     frontmatter: { title: string; date: string; published: boolean };
   }>("../posts/*.mdx", { eager: true });

app/routes/index.tsx

@@ -1,8 +1,9 @@
 import { type FC, Fragment } from "hono/jsx";
+import type { JSX } from "hono/jsx/jsx-runtime";
 import { Heading } from "../components/Heading";
 import { rssClient } from "../libs/rss/rss";
 
-export default function Top() {
+export default function Top(): JSX.Element {
   return (
     <>
       <Heading title="Hi! I'm Yuto" />

app/routes/posts/_renderer.tsx

@@ -1,3 +1,4 @@
+import type { MiddlewareHandler } from "hono";
 import { jsxRenderer } from "hono/jsx-renderer";
 import ContentWrapper from "../../islands/ContentWrapper";
 import LikeButton from "../../islands/LikeButton";
@@ -26,4 +27,4 @@ export default jsxRenderer(({ children, Layout, frontmatter }) => {
       <SnsButton title={_title} path={frontmatter?.path ?? ""} />
     </Layout>
   );
-});
+}) satisfies MiddlewareHandler as MiddlewareHandler;

app/routes/posts/yossy-dev-isolated-declarations.mdx

@@ -0,0 +1,106 @@
+---
+title: "yossy.devでisolatedDeclationを有効にしてtscの速度を測る"
+description: "Isolated Declarationsを有効にして、速度を測ってみました。"
+date: "2024/12/16"
+updatedAt: "2024/12/16"
+path: "isolated-declarations"
+published: true
+---
+
+[2024年 ユウトの一人アドベントカレンダー](https://adventar.org/calendars/9980)の16日目の記事です。
+
+## Intro
+
+[Isolated Declarations](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-5-5.html#isolated-declarations)を有効にして、速度を測ってみました。
+
+## 進め方
+
+`"isolatedDeclarations": true`を設定するだけで良いです。プロジェクトによっては、`--declaration`も有効にする必要があるかもしれません。
+
+あとは大量のエラーと戦うだけです。本ブログに関しては、以下のようなエラー数でした。
+
+```
+Errors  Files
+     1  app/hooks/useDebounce.ts:3
+     1  app/libs/date.ts:7
+     3  app/libs/rss/rss.ts:14
+     1  app/libs/vite-remark-toc-plugin.ts:9
+     1  app/routes/_renderer.tsx:5
+     1  app/routes/all/index.tsx:16
+     1  app/routes/index.tsx:5
+     1  app/routes/posts/_renderer.tsx:6
+     1  app/routes/profile/index.tsx:10
+     1  app/routes/slides/index.tsx:7
+     1  app/routes/youtube/index.tsx:7
+     1  app/server.ts:4
+     1  vite.config.ts:14
+```
+
+ただvscodeは優秀なので、⌘ + .でいい感じに型をつけてくれるので、それにほぼ頼りました。
+実際にはそれなりにちゃんとみたほうがいいと思います。
+
+## 結果
+
+実際にコード上でどんな変更をしたかは、[https://github.com/yossydev/yossy.dev/pull/78/files#diff-87e9aecc3694701f8eaef8ed0938745a89219c6d60a3b30f7ae9c44dc6761490](https://github.com/yossydev/yossy.dev/pull/78/files)で確認できます。
+
+そして、`"typecheck:perfomance": "tsc --generateTrace . --incremental false --noEmit"`ってスクリプトを追加して、速度のチェックを行いました。
+
+ここで生成されるtrace.jsonを、chrome://tracingの右上にあるLoadボタンで読み込ませて確認しています。
+
+### 無効時
+
+1. 804ms
+2. 757ms
+3. 822ms
+4. 791ms
+
+<table>
+    <thead>
+        <tr>
+            <th>
+                <img width="1194" alt="image" src="https://github.com/user-attachments/assets/7fbd920f-5955-4007-9630-11b89ce6c3ac" />
+            </th>
+            <th>
+                <img width="1210" alt="image" src="https://github.com/user-attachments/assets/b7c41e51-9015-497c-b2ea-2f4ad252cfb8" />
+            </th>
+            <th>
+                <img width="1198" alt="image" src="https://github.com/user-attachments/assets/bcc60ef4-100b-46c7-815b-4eb5ec11cb12" />
+            </th>
+            <th>
+                <img width="1200" alt="image" src="https://github.com/user-attachments/assets/6360fb36-bbc4-439c-8751-c0962c1d0acf" />
+            </th>
+        </tr>
+    </thead>
+</table>
+
+### 有効時
+
+1. 865ms
+2. 773ms
+3. 773ms
+4. 787ms
+
+<table>
+    <thead>
+        <tr>
+            <th>
+                <img width="1200" alt="image" src="https://github.com/user-attachments/assets/16976162-56e4-4c82-a5d4-8becfe7c8ca7"/>
+            </th>
+            <th>
+                <img width="1200" alt="image" src="https://github.com/user-attachments/assets/e688d7d1-cf3b-4f7b-a48a-4498545482d3"/>
+            </th>
+            <th>
+                <img width="1198" alt="image" src="https://github.com/user-attachments/assets/beedf772-b673-43c1-ba69-692bee8c457a"/>
+            </th>
+            <th>
+                <img width="1203" alt="image" src="https://github.com/user-attachments/assets/3a119552-8d09-4ae6-8d00-32f46e99ee61"/>
+            </th>
+        </tr>
+    </thead>
+</table>
+
+全然コード量も多くないし、複雑な推論も必要な処理していないので誤差ですね。
+
+## まとめ
+
+Isolated Declarationsを有効化していくOSSや、サービスも多くなっていくと思うので、なんとなく素振りができてよかったです。

app/routes/profile/index.tsx

@@ -1,4 +1,6 @@
+import type { Env } from "hono";
 import type { FC } from "hono/jsx";
+import type { H } from "hono/types";
 import { createRoute } from "honox/factory";
 import { Heading } from "../../components/Heading";
 import { LINK } from "../../constants";
@@ -51,4 +53,10 @@ export default createRoute((c) => {
     </>,
     { title: "Profile | yossy.dev" },
   );
-});
+  // biome-ignore lint/suspicious/noExplicitAny: <explanation>
+  // biome-ignore lint/complexity/noBannedTypes: <explanation>
+}) satisfies [H<Env, any, {}, Response | Promise<Response>>] as [
+  // biome-ignore lint/suspicious/noExplicitAny: <explanation>
+  // biome-ignore lint/complexity/noBannedTypes: <explanation>
+  H<Env, any, {}, Response | Promise<Response>>,
+];

app/routes/slides/index.tsx

@@ -1,10 +1,11 @@
 import { Fragment } from "hono/jsx";
+import type { JSX } from "hono/jsx/jsx-runtime";
 import { Heading } from "../../components/Heading";
 import { rssClient } from "../../libs/rss/rss";
 
 const FIRST_SPEAKERDECK_YEAR = 2022;
 
-export default function Slide() {
+export default function Slide(): JSX.Element {
   const yearlyBlogs = () => {
     const data = [];
     const thisYear = new Date().getFullYear();

app/routes/youtube/index.tsx

@@ -1,10 +1,11 @@
 import { Fragment } from "hono/jsx";
+import type { JSX } from "hono/jsx/jsx-runtime";
 import { Heading } from "../../components/Heading";
 import { rssClient } from "../../libs/rss/rss";
 
 const FIRST_YOUTUBE_YEAR = 2024;
 
-export default function Youtube() {
+export default function Youtube(): JSX.Element {
   const yearlyBlogs = () => {
     const data = [];
     const thisYear = new Date().getFullYear();

app/server.ts

@@ -1,7 +1,9 @@
+import type { Env, Hono } from "hono";
 import { showRoutes } from "hono/dev";
+import type { BlankSchema } from "hono/types";
 import { createApp } from "honox/server";
 
-const app = createApp();
+const app: Hono<Env, BlankSchema, "/"> = createApp();
 
 showRoutes(app);
 

package.json

@@ -12,6 +12,7 @@
     "check": "biome check --apply .",
     "check:ci": "biome ci .",
     "typecheck": "tsc -p . --noEmit",
+    "typecheck:perfomance": "tsc --generateTrace . --incremental false --noEmit",
     "create:post": "node ./app/libs/posts/generate-post.mjs",
     "update-rss": "node ./app/libs/posts/rss-parser.mjs"
   },
@@ -36,6 +37,7 @@
     "rehype": "^13.0.1",
     "remark": "^15.0.1",
     "tailwindcss": "^3.4.1",
+    "typescript": "^5.7.2",
     "unist-util-visit": "^5.0.0",
     "vite": "^6.0.0",
     "wrangler": "^3.57.0"

tsconfig.json

@@ -8,6 +8,8 @@
     "skipLibCheck": true,
     "types": ["@cloudflare/workers-types", "vite/client"],
     "jsx": "react-jsx",
-    "jsxImportSource": "hono/jsx"
+    "jsxImportSource": "hono/jsx",
+    "declaration": true,
+    "isolatedDeclarations": true
   }
 }

vite.config.ts

@@ -6,12 +6,12 @@ import client from "honox/vite/client";
 import rehypeHighlight from "rehype-highlight";
 import remarkFrontmatter from "remark-frontmatter";
 import remarkMdxFrontmatter from "remark-mdx-frontmatter";
-import { defineConfig } from "vite";
+import type { UserConfigExport } from "vite";
 import rehypeTOC from "./app/libs/vite-remark-toc-plugin";
 
 const entry = "./app/server.ts";
 
-export default defineConfig(({ mode }) => {
+const defineConfig = ({ mode }: { mode: string }): UserConfigExport => {
   if (mode === "client") {
     return {
       plugins: [client()],
@@ -38,4 +38,6 @@ export default defineConfig(({ mode }) => {
     ],
     optimizeDeps: {},
   };
-});
+};
+
+export default defineConfig;