docs(first): Update example (#712)

toss · Oct 14, 2024 · 3ed5a41 · 3ed5a41
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diff --git a/docs/ja/reference/compat/array/first.md b/docs/ja/reference/compat/array/first.md
@@ -28,7 +28,23 @@ function first<T>(arr: ArrayLike<T> | undefined | null): T | undefined;
 ## 例
 
 ```typescript
-const emptyArr: number[] = [];
-const noElement = head(emptyArr);
-// noElement will be undefined
+const arr1 = [1, 2, 3];
+const firstElement1 = first(arr1);
+// firstElement1は1です。
+
+const arr2: string[] = [];
+const firstElement2 = first(arr2);
+// firstElement2はundefinedです。
+
+const arr3 = ['a', 'b', 'c'];
+const firstElement3 = first(arr3);
+// firstElement3は'a'です。
+
+const arr4 = [true, false, true];
+const firstElement4 = first(arr4);
+// firstElement4はtrueです。
+
+const arr5: [number, string, boolean] = [1, 'a', true];
+const firstElement5 = first(arr5);
+// firstElement5は1です。
 ```
diff --git a/docs/reference/compat/array/first.md b/docs/reference/compat/array/first.md
@@ -28,7 +28,23 @@ function first<T>(arr: ArrayLike<T> | undefined | null): T | undefined;
 ## Examples
 
 ```typescript
-const emptyArr: number[] = [];
-const noElement = head(emptyArr);
-// noElement will be undefined
+const arr1 = [1, 2, 3];
+const firstElement1 = first(arr1);
+// firstElement1 will be 1
+
+const arr2: string[] = [];
+const firstElement2 = first(arr2);
+// firstElement2 will be undefined
+
+const arr3 = ['a', 'b', 'c'];
+const firstElement3 = first(arr3);
+// firstElement3 will be 'a'
+
+const arr4 = [true, false, true];
+const firstElement4 = first(arr4);
+// firstElement4 will be true
+
+const arr5: [number, string, boolean] = [1, 'a', true];
+const firstElement5 = first(arr5);
+// firstElement5 will be 1
 ```
diff --git a/docs/zh_hans/reference/compat/array/first.md b/docs/zh_hans/reference/compat/array/first.md
@@ -28,7 +28,23 @@ function first<T>(arr: ArrayLike<T> | undefined | null): T | undefined;
 ## 示例
 
 ```typescript
-const emptyArr: number[] = [];
-const noElement = head(emptyArr);
-// noElement will be undefined
+const arr1 = [1, 2, 3];
+const firstElement1 = first(arr1);
+// firstElement1 将是 1
+
+const arr2: string[] = [];
+const firstElement2 = first(arr2);
+// firstElement2 将是 undefined
+
+const arr3 = ['a', 'b', 'c'];
+const firstElement3 = first(arr3);
+// firstElement3 将是 'a'
+
+const arr4 = [true, false, true];
+const firstElement4 = first(arr4);
+// firstElement4 将是 true
+
+const arr5: [number, string, boolean] = [1, 'a', true];
+const firstElement5 = first(arr5);
+// firstElement5 将是 1
 ```