process: set up process warning handler in pre-execution

Since it depends on environment variables.

PR-URL: https://github.com/nodejs/node/pull/26466
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/internal/bootstrap/pre_execution.js b/lib/internal/bootstrap/pre_execution.js
index 1ba6c7a758..9dc93a5478 100644
--- a/lib/internal/bootstrap/pre_execution.js
+++ b/lib/internal/bootstrap/pre_execution.js
@@ -8,6 +8,8 @@ let traceEventsAsyncHook;
 function prepareMainThreadExecution() {
   setupTraceCategoryState();
 
+  setupWarningHandler();
+
   // Only main thread receives signals.
   setupSignalHandlers();
 
@@ -36,6 +38,15 @@ function prepareMainThreadExecution() {
   loadPreloadModules();
 }
 
+function setupWarningHandler() {
+  const {
+    onWarning
+  } = require('internal/process/warning');
+  if (!process.noProcessWarnings && process.env.NODE_NO_WARNINGS !== '1') {
+    process.on('warning', onWarning);
+  }
+}
+
 function initializeReport() {
   if (!getOptionValue('--experimental-report')) {
     return;
@@ -245,6 +256,7 @@ function loadPreloadModules() {
 }
 
 module.exports = {
+  setupWarningHandler,
   prepareMainThreadExecution,
   initializeDeprecations,
   initializeESMLoader,