debugger: fix race condition/deadlock on initialization

PR-URL: #38161
Backport-PR-URL: #38858
Refs: #36481
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Jan Krems <jan.krems@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

lib/internal/inspector/inspect_repl.js

@@ -1062,19 +1062,16 @@ function createRepl(inspector) {
   }
 
   function initAfterStart() {
-    const setupTasks = [
-      Runtime.enable(),
-      Profiler.enable(),
-      Profiler.setSamplingInterval({ interval: 100 }),
-      Debugger.enable(),
-      Debugger.setPauseOnExceptions({ state: 'none' }),
-      Debugger.setAsyncCallStackDepth({ maxDepth: 0 }),
-      Debugger.setBlackboxPatterns({ patterns: [] }),
-      Debugger.setPauseOnExceptions({ state: pauseOnExceptionState }),
-      restoreBreakpoints(),
-      Runtime.runIfWaitingForDebugger(),
-    ];
-    return Promise.all(setupTasks);
+    return Runtime.enable()
+      .then(() => Profiler.enable())
+      .then(() => Profiler.setSamplingInterval({ interval: 100 }))
+      .then(() => Debugger.enable())
+      .then(() => Debugger.setPauseOnExceptions({ state: 'none' }))
+      .then(() => Debugger.setAsyncCallStackDepth({ maxDepth: 0 }))
+      .then(() => Debugger.setBlackboxPatterns({ patterns: [] }))
+      .then(() => Debugger.setPauseOnExceptions({ state: pauseOnExceptionState }))
+      .then(() => restoreBreakpoints())
+      .then(() => Runtime.runIfWaitingForDebugger())
   }
 
   return function startRepl() {