Fix cannot resolve parent with using with other packages

e.g., mods.forEach(mod => requere(`path/to/${mod}`))

index.js

@@ -3,7 +3,7 @@
 const resolver = require('./lib/resolver.js')
 const extensions = require('./lib/extensions')
 
-const getCWD = require('./lib/get-cwd')
+const getParent = require('./lib/get-parent')
 
 function resolvedByRequire (request) {
   try {
@@ -28,7 +28,7 @@ function requere (request, onlySupportedExtname) {
     return mod
   }
 
-  return resolver(request, getCWD(__filename, new Error, request[0] === '.'), onlySupportedExtname)
+  return resolver(request, getParent(__filename, new Error, request[0] === '.'), onlySupportedExtname)
 }
 
 requere.register = (ext, loader) => {

lib/get-cwd.js → lib/get-parent.js

@@ -2,6 +2,13 @@
 
 const path = require('path')
 
+function getFilename (input) {
+  const firstSepIndex = input.indexOf(path.sep)
+  const lastSpaceIndex = input.lastIndexOf(' ', firstSepIndex)
+
+  return input.slice(lastSpaceIndex)
+}
+
 module.exports = (parentFilename, e, relative) => {
   const stack = e.stack.split('\n')
 
@@ -10,21 +17,25 @@ module.exports = (parentFilename, e, relative) => {
   let parent
 
   for (let dir of stack.slice(index + 1)) {
-    let match = dir.match(/\((.+):\d+:\d+\)?$/)
+    let match = getFilename(dir).match(/([^(]+):\d+:\d+\)?$/)
+
+    if (match) {
+      match = match[1].trim()
+    }
 
-    if (!match || !path.isAbsolute(match[1])) {
+    if (!match || !path.isAbsolute(match)) {
       continue
     }
 
-    parent = match[1]
+    parent = match
     break
   }
 
   if (relative) {
     return path.dirname(parent)
   }
 
-  const lastIndex = parent && parent.split('/').lastIndexOf('node_modules')
+  const lastIndex = parent && parent.split(path.sep).lastIndexOf('node_modules')
 
   if (lastIndex > -1) {
     return parent.slice(0, lastIndex + 1)