/**
* Transforms numbers into hex values and leaves strings as they are.
*
* This transformer is used in core functions that take special values.
*
* @example
* const numberValue = plain(3)
* const stringValue = plain('1 / 3')
*
* numberValue === 3
* stringValue === '1 / 3'
*
* @param {(string|number|bigint)} value - A value that should be a string, number or bigint
* @returns {(string|number|bigint)} The value that was passed
* @name plain
* @memberOf util
*/
export default value => value