feat(upperFirst, lowerFirst): Add some docs for lowerFirst & upperFirst

docs/.vitepress/en.mts

@@ -214,6 +214,8 @@ function sidebar(): DefaultTheme.Sidebar {
             { text: 'startCase', link: '/reference/string/startCase' },
             { text: 'pascalCase', link: '/reference/string/pascalCase' },
             { text: 'capitalize', link: '/reference/string/capitalize' },
+            { text: 'lowerFirst', link: '/reference/string/lowerFirst' },
+            { text: 'upperFirst', link: '/reference/string/upperFirst' },
             { text: 'startsWith (compat)', link: '/reference/compat/string/startsWith' },
             { text: 'endsWith (compat)', link: '/reference/compat/string/endsWith' },
             { text: 'padStart (compat)', link: '/reference/compat/string/padStart' },

docs/.vitepress/ko.mts

@@ -227,6 +227,8 @@ function sidebar(): DefaultTheme.Sidebar {
             { text: 'startCase', link: '/ko/reference/string/startCase' },
             { text: 'pascalCase', link: '/ko/reference/string/pascalCase' },
             { text: 'capitalize', link: '/ko/reference/string/capitalize' },
+            { text: 'lowerFirst', link: '/ko/reference/string/lowerFirst' },
+            { text: 'upperFirst', link: '/ko/reference/string/upperFirst' },
             { text: 'startsWith (호환성)', link: '/ko/reference/compat/string/startsWith' },
             { text: 'endsWith (호환성)', link: '/ko/reference/compat/string/endsWith' },
             { text: 'padStart (호환성)', link: '/ko/reference/compat/string/padStart' },

docs/.vitepress/zh_hans.mts

@@ -210,6 +210,8 @@ function sidebar(): DefaultTheme.Sidebar {
             { text: 'startCase', link: '/zh_hans/reference/string/startCase' },
             { text: 'pascalCase', link: '/zh_hans/reference/string/pascalCase' },
             { text: 'capitalize', link: '/zh_hans/reference/string/capitalize' },
+            { text: 'lowerFirst', link: '/zh_hans/reference/string/lowerFirst' },
+            { text: 'upperFirst', link: '/zh_hans/reference/string/upperFirst' },
             { text: 'startsWith (兼容性)', link: '/zh_hans/reference/compat/string/startsWith' },
             { text: 'endsWith (兼容性)', link: '/zh_hans/reference/compat/string/endsWith' },
             { text: 'padStart (兼容性)', link: '/zh_hans/reference/compat/string/padStart' },

docs/ko/reference/string/lowerFirst.md

@@ -0,0 +1,27 @@
+# lowerFirst
+
+문자열의 첫 글자를 소문자로 바꿔요.
+
+## 인터페이스
+
+```typescript
+function lowerFirst(str: string): string;
+```
+
+### 파라미터
+
+- `str` (`string`): 바꿀 문자열.
+
+### 반환 값
+
+(`string`) 첫 글자가 소문자로 바뀐 문자열.
+
+## 예시
+
+```typescript
+import { lowerFirst } from 'es-toolkit/string';
+
+lowerFirst('fred'); // 반환 값은 'fred'
+lowerFirst('Fred'); // 반환 값은 'fred'
+lowerFirst('FRED'); // 반환 값은 'fRED'
+```

docs/ko/reference/string/upperFirst.md

@@ -0,0 +1,27 @@
+# upperFirst
+
+문자열의 첫 글자를 대문자로 바꿔요.
+
+## 인터페이스
+
+```typescript
+function upperFirst(str: string): string;
+```
+
+### 파라미터
+
+- `str` (`string`): 바꿀 문자열.
+
+### 반환 값
+
+(`string`) 첫 글자가 대문자로 바뀐 문자열.
+
+## 예시
+
+```typescript
+import { upperFirst } from 'es-toolkit/string';
+
+upperFirst('fred') // 반환 값은 'Fred'
+upperFirst('Fred') // 반환 값은 'Fred'
+upperFirst('FRED') // 반환 값은 'FRED'
+```

docs/reference/string/lowerFirst.md

@@ -21,6 +21,7 @@ function lowerFirst(str: string): string;
 ```typescript
 import { lowerFirst } from 'es-toolkit/string';
 
-upperCase('Fred') // returns 'fred'
-upperCase('FRED') // returns 'fRED'
-```
+lowerFirst('fred'); // returns 'fred'
+lowerFirst('Fred'); // returns 'fred'
+lowerFirst('FRED'); // returns 'fRED'
+```

docs/zh_hans/reference/string/lowerFirst.md

@@ -0,0 +1,27 @@
+# lowerFirst
+
+将字符串的第一个字符转换为小写。
+
+## 签名
+
+```typescript
+function lowerFirst(str: string): string;
+```
+
+### 参数
+
+- `str` (`string`): 要修改的字符串。
+
+### 返回值
+
+(`string`): 转换后的字符串。
+
+## 示例
+
+```typescript
+import { lowerFirst } from 'es-toolkit/string';
+
+lowerFirst('fred'); // 返回 'fred'
+lowerFirst('Fred'); // 返回 'fred'
+lowerFirst('FRED'); // 返回 'fRED'
+```

docs/zh_hans/reference/string/upperFirst.md

@@ -0,0 +1,27 @@
+# upperFirst
+
+将字符串的第一个字符转换为大写。
+
+## 签名
+
+```typescript
+function upperFirst(str: string): string;
+```
+
+### 参数
+
+- `str` (`string`): 要修改的字符串。
+
+### 返回值
+
+(`string`): 转换后的字符串。
+
+## 示例
+
+```typescript
+import { upperFirst } from 'es-toolkit/string';
+
+upperFirst('fred') // 返回 'Fred'
+upperFirst('Fred') // 返回 'Fred'
+upperFirst('FRED') // 返回 'FRED'
+```