Minor cleanup

Author: ljharb

lib/sync.js

@@ -50,7 +50,7 @@ module.exports = function (x, options) {
             var rfile = path.relative(pkg.dir, x);
             var r = opts.pathFilter(pkg.pkg, x, rfile);
             if (r) {
-                x = path.resolve(pkg.dir, r);
+                x = path.resolve(pkg.dir, r); // eslint-disable-line no-param-reassign
             }
         }
 
@@ -67,9 +67,11 @@ module.exports = function (x, options) {
     }
 
     function loadpkg(dir) {
-        if (dir === '' || dir === '/' || (/[/\\]node_modules[/\\]*$/).test(dir)) {
-            return null;
+        if (dir === '' || dir === '/') return;
+        if (process.platform === 'win32' && (/^\w:[/\\]*$/).test(dir)) {
+            return;
         }
+        if (/[/\\]node_modules[/\\]*$/.test(dir)) return;
 
         var pkgfile = path.join(dir, 'package.json');
 

readme.markdown

@@ -115,6 +115,12 @@ options are:
 
 * `opts.packageFilter(pkg, pkgfile)` - transform the parsed package.json contents before looking at the "main" field
 
+* `opts.pathFilter(pkg, path, relativePath)` - transform a path within a package
+  * pkg - package data
+  * path - the path being resolved
+  * relativePath - the path relative from the package.json location
+  * returns - a relative path that will be joined from the package.json location
+
 * opts.paths - require.paths array to use if nothing is found on the normal `node_modules` recursive walk (probably don't use this)
 
 * opts.moduleDirectory - directory (or directories) in which to recursively look for modules. default: `"node_modules"`