diff --git a/lib/schmooze/base.rb b/lib/schmooze/base.rb
index ce44c17..ab9e4a8 100644
--- a/lib/schmooze/base.rb
+++ b/lib/schmooze/base.rb
@@ -1,6 +1,6 @@
 require 'json'
-require 'open3'
 
+require 'schmooze/open3'
 require 'schmooze/processor_generator'
 
 module Schmooze
@@ -43,7 +43,7 @@ def finalize(stdin, stdout, stderr, process_thread)
     def initialize(root, env={})
       @_schmooze_env = env
       @_schmooze_root = root
-      @_schmooze_code = ProcessorGenerator.generate(self.class.instance_variable_get(:@_schmooze_imports) || [], self.class.instance_variable_get(:@_schmooze_methods) || [])
+      @_schmooze_code = ProcessorGenerator.generate(root, self.class.instance_variable_get(:@_schmooze_imports) || [], self.class.instance_variable_get(:@_schmooze_methods) || [])
     end
 
     def pid
@@ -62,7 +62,6 @@ def spawn_process
           'node',
           '-e',
           @_schmooze_code,
-          chdir: @_schmooze_root
         )
         ensure_packages_are_initiated(*process_data)
         ObjectSpace.define_finalizer(self, self.class.send(:finalize, *process_data))
diff --git a/lib/schmooze/open3.rb b/lib/schmooze/open3.rb
new file mode 100644
index 0000000..b346b5d
--- /dev/null
+++ b/lib/schmooze/open3.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+module Schmooze
+  module Open3
+    def popen3(*cmd, **opts, &block)
+      in_r, in_w = IO.pipe
+      opts[:in] = in_r
+      in_w.sync = true
+
+      out_r, out_w = IO.pipe
+      opts[:out] = out_w
+
+      err_r, err_w = IO.pipe
+      opts[:err] = err_w
+
+      popen_run(cmd, opts, [in_r, out_w, err_w], [in_w, out_r, err_r], &block)
+    end
+    module_function :popen3
+
+    def popen_run(cmd, opts, child_io, parent_io) # :nodoc:
+      if last = Hash.try_convert(cmd.last)
+        opts = opts.merge(last)
+        cmd.pop
+      end
+      pid = spawn(*cmd, opts)
+      wait_thr = Process.detach(pid)
+
+      wait_thr.define_singleton_method(:pid) { pid }
+
+      child_io.each {|io| io.close }
+      result = [*parent_io, wait_thr]
+      if defined? yield
+        begin
+          return yield(*result)
+        ensure
+          parent_io.each{|io| io.close unless io.closed?}
+          wait_thr.join
+        end
+      end
+      result
+    end
+    module_function :popen_run
+    class << self
+      private :popen_run
+    end
+  end
+end
diff --git a/lib/schmooze/processor_generator.rb b/lib/schmooze/processor_generator.rb
index e1d2062..218da8f 100644
--- a/lib/schmooze/processor_generator.rb
+++ b/lib/schmooze/processor_generator.rb
@@ -3,8 +3,13 @@
 module Schmooze
   class ProcessorGenerator
     class << self
-      def generate(imports, methods)
-%{try {
+      def generate(root, imports, methods)
+%{
+process.chdir(#{root.to_json});
+var path = require('path');
+module.filename = path.join(process.cwd(), '[eval]');
+module.paths = require('module')._nodeModulePaths(process.cwd());
+try {
 #{imports.map {|import| generate_import(import)}.join}} catch (e) {
   process.stdout.write(JSON.stringify(['err', e.toString()]));
   process.stdout.write("\\n");
diff --git a/test/schmooze_test.rb b/test/schmooze_test.rb
index 4a9112c..296f9c5 100644
--- a/test/schmooze_test.rb
+++ b/test/schmooze_test.rb
@@ -24,7 +24,8 @@ class CoffeeSchmoozer < Schmooze::Base
   end
 
   def setup
-    @schmoozer = CoffeeSchmoozer.new(File.join(__dir__, 'fixtures', 'coffee'))
+    @root = File.join(__dir__, 'fixtures', 'coffee')
+    @schmoozer = CoffeeSchmoozer.new(@root)
   end
 
   def test_that_it_has_a_version_number
@@ -33,6 +34,10 @@ def test_that_it_has_a_version_number
 
   def test_it_generates_code
     assert_equal <<-JS.strip, @schmoozer.instance_variable_get(:@_schmooze_code).strip
+process.chdir(#{@root.to_json});
+var path = require('path');
+module.filename = path.join(process.cwd(), '[eval]');
+module.paths = require('module')._nodeModulePaths(process.cwd());
 try {
   var coffee = require("coffee-script");
   var compile = require("coffee-script").compile;