1 files changed, 7 insertions, 0 deletions
diff --git a/lib/internal/bootstrap/pre_execution.js b/lib/internal/bootstrap/pre_execution.js
index 49fc025db0..30c0d89a4a 100644
--- a/lib/internal/bootstrap/pre_execution.js
+++ b/lib/internal/bootstrap/pre_execution.js
@@ -18,6 +18,8 @@ function prepareMainThreadExecution() {
       setupCoverageHooks(process.env.NODE_V8_COVERAGE);
   }
 
+  setupDebugEnv();
+
   // Only main thread receives signals.
   setupSignalHandlers();
 
@@ -91,6 +93,10 @@ function initializeReport() {
   });
 }
 
+function setupDebugEnv() {
+  require('internal/util/debuglog').initializeDebugEnv(process.env.NODE_DEBUG);
+}
+
 function setupSignalHandlers() {
   const {
     createSignalHandlers
@@ -286,6 +292,7 @@ function loadPreloadModules() {
 module.exports = {
   setupCoverageHooks,
   setupWarningHandler,
+  setupDebugEnv,
   prepareMainThreadExecution,
   initializeDeprecations,
   initializeESMLoader,