Skip to content

「TypeScript」の節の文面を修正 #922

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
chvmvd merged 1 commit into from
Jan 24, 2026
Merged

「TypeScript」の節の文面を修正 #922

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions docs/4-advanced/03-typescript/index.mdx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -145,7 +145,7 @@ function repeat(text: string, times: number): string {

## 部分型の関係

TypeScriptの型には包含関係があり、`T`が`U`の部分集合であるとき、`T`は`U`の**部分型**であるといいます。
TypeScriptの型には包含関係があり、型`T`が型`U`の部分集合であるとき、`T`は`U`の**部分型**であるといいます。

この部分型関係は、**全体集合を`unknown`型、空集合を`never`型**として、次の図のように整理できます。

Expand Down Expand Up @@ -445,7 +445,7 @@ window.onload = (e) => {

## ジェネリクス

引数を一つ受け取り、その値をそのまま返す関数を考えてみよう。
引数を一つ受け取り、その値をそのまま返す関数を考えてみましょう。

```typescript
function identity(x) {
Expand Down