/*
 * normalize-path <https://github.com/jonschlinkert/normalize-path>
 *
 * Copyright (c) 2014-2018, Jon Schlinkert.
 * Released under the MIT License.
 */
export function normalizePath(path: string): string {
	if (path === "\\" || path === "/") return "/"

	const len = path.length
	if (len <= 1) return path

	// ensure that win32 namespaces has two leading slashes, so that the path is
	// handled properly by the win32 version of path.parse() after being normalized
	// https://msdn.microsoft.com/library/windows/desktop/aa365247(v=vs.85).aspx#namespaces
	let prefix = ""
	if (len > 4 && path[3] === "\\") {
		const ch = path[2]
		if ((ch === "?" || ch === ".") && path.slice(0, 2) === "\\\\") {
			path = path.slice(2)
			prefix = "//"
		}
	}
	const segs = path.split(/[/\\]+/)
	return prefix + segs.join("/")
}