bigint-crypto-utils/node_modules/normalize-path/index.js

36 lines
1.0 KiB
JavaScript

/*!
* normalize-path <https://github.com/jonschlinkert/normalize-path>
*
* Copyright (c) 2014-2018, Jon Schlinkert.
* Released under the MIT License.
*/
module.exports = function(path, stripTrailing) {
if (typeof path !== 'string') {
throw new TypeError('expected path to be a string');
}
if (path === '\\' || path === '/') return '/';
var 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
var prefix = '';
if (len > 4 && path[3] === '\\') {
var ch = path[2];
if ((ch === '?' || ch === '.') && path.slice(0, 2) === '\\\\') {
path = path.slice(2);
prefix = '//';
}
}
var segs = path.split(/[/\\]+/);
if (stripTrailing !== false && segs[segs.length - 1] === '') {
segs.pop();
}
return prefix + segs.join('/');
};