constantCase

Converts a string to constant case.

Constant case is a naming convention where each word is written in uppercase letters and separated by an underscore (_). For example, CONSTANT_CASE.

Signature

function constantCase(str: string): string;

Parameters

• str (string): The string to convert to constant case.

Returns

(string) The converted constant case string.

Examples

import { constantCase } from 'es-toolkit/string';

constantCase('camelCase'); // returns 'CAMEL_CASE'
constantCase('some whitespace'); // returns 'SOME_WHITESPACE'
constantCase('hyphen-text'); // returns 'HYPHEN_TEXT'
constantCase('HTTPRequest'); // returns 'HTTP_REQUEST'