fix: remove SIGUSR2 to support --heapsnapshot-signal=SIGUSR2 node opt…

…ions flag

README.md

@@ -116,7 +116,6 @@ Using this package will bind process event listeners when `graceful.listen()` is
 * `process.once('SIGTERM')` - will exit gracefully
 * `process.once('SIGHUP')` - will exit gracefully
 * `process.once('SIGINT')` - will exit gracefully
-* `process.once('SIGUSR2')` - will exit gracefully (nodemon support)
 
 This package also prevents multiple process/SIG events from triggering multiple graceful exits. Only one graceful exit can occur at a time.
 

index.js

@@ -121,9 +121,7 @@ class Graceful {
     });
 
     // handle graceful restarts
-    // support nodemon (SIGUSR2 as well)
-    // <https://github.com/remy/nodemon#controlling-shutdown-of-your-script>
-    for (const sig of ['SIGTERM', 'SIGHUP', 'SIGINT', 'SIGUSR2']) {
+    for (const sig of ['SIGTERM', 'SIGHUP', 'SIGINT']) {
       process.once(sig, async () => {
         await this.exit(sig);
       });