es-toolkit/dist/string/upperFirst.mjs

A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

//#region src/string/upperFirst.ts
/**
* Converts the first character of string to upper case.
*
* @param str - The string that is to be changed
* @returns The converted string.
*
* @example
* const convertedStr1 = upperFirst('fred') // returns 'Fred'
* const convertedStr2 = upperFirst('Fred') // returns 'Fred'
* const convertedStr3 = upperFirst('FRED') // returns 'FRED'
*/
function upperFirst(str) {
	return str.substring(0, 1).toUpperCase() + str.substring(1);
}
//#endregion
export { upperFirst };