feat: fallback to process.cwd() if no filename provided either

Author: pi0

create-require.js

@@ -2,7 +2,12 @@ const nativeModule = require('module')
 const path = require('path')
 const fs = require('fs')
 
-function createRequire (filename) {
+function createRequire(filename) {
+  // Fallback to process.cwd() if no filename passed
+  if (!filename) {
+    filename = process.cwd()
+  }
+
   // If filename is dir, createRequire goes with parent directory, so we need fakepath
   if (isDir(filename)) {
     filename = path.join(filename, 'index.js')