diff --git a/pytest_pyodide/node_test_driver.js b/pytest_pyodide/node_test_driver.js
index 09d56eb..812e50b 100644
--- a/pytest_pyodide/node_test_driver.js
+++ b/pytest_pyodide/node_test_driver.js
@@ -17,10 +17,22 @@ function _fetch(path) {
 
 const context = {
   loadPyodide,
-  ...globalThis,
+  path,
+  process,
+  require,
+  setTimeout,
+  fetch: _fetch,
+  TextDecoder: util.TextDecoder,
+  TextEncoder: util.TextEncoder,
+  URL,
+  clearInterval,
+  clearTimeout,
+  setInterval,
+  setTimeout,
+  Headers
 };
-context.self = context;
 vm.createContext(context);
+vm.runInContext("globalThis.self = globalThis;", context);
 
 // Get rid of all colors in output of console.log, they mess us up.
 for (let key of Object.keys(util.inspect.styles)) {