index.js

'use strict';
module.exports = input => {
	const isExtendedLengthPath = /^\\\\\?\\/.test(input);
	const hasNonAscii = /[^\u0000-\u0080]+/.test(input); // eslint-disable-line no-control-regex

	if (isExtendedLengthPath || hasNonAscii) {
		return input;
	}

	return input.replace(/\\/g, '/');
};