Function ucfirst

ucfirst(str: string): string

Converts the first character of a string to uppercase.

Parameters

str: string
The string to convert.

Returns string

The string with the first character converted to uppercase.

Example

ucfirst("hello") // Returns "Hello"
ucfirst("world") // Returns "World"
ucfirst("") // Returns ""
ucfirst(null) // Returns null
ucfirst(undefined) // Returns undefined
ucfirst("123") // Returns "123"
ucfirst("123abc") // Returns "123abc"
ucfirst("123ABC") // Returns "123ABC"
ucfirst("123abcABC") // Returns "123abcABC"
ucfirst("123abcABC") // Returns "123abcABC"

Source

export function ucfirst(str: string): string {
  if (!str) {
    return str;
  }

  return str.charAt(0).toUpperCase() + str.slice(1);
}