capitalizeFirstLetter#

Capitalize the first letter of the input string.

Usage Scenarios#

• Data Display: When displaying user - input names, titles, or other information, ensure the first letter is capitalized to enhance the normativity and aesthetics of the information.
• Formatting Output: When generating documents, reports, or other content, format specific strings.

Example#

import { capitalizeFirstLetter } from 'funtool';
//import { capitalizeFirstLetter } from 'funtool/string';

capitalizeFirstLetter('hello'); // ✅ 'Hello'
capitalizeFirstLetter(''); // ✅ ''

## Signature

```typescript
function capitalizeFirstLetter(str: string): string

Parameters#

• str ( string ): The input string.

Returns#

• ( string ): The string with the first letter capitalized. If the input is an empty string, an empty string is returned.