feat: allow more Node.js cli flags in main process (#39372)

* feat: allow more Node.js cli flags in main process

Co-authored-by: Shelley Vohr <[email protected]>

* docs: update cli switch documentation

Co-authored-by: Shelley Vohr <[email protected]>

---------

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Shelley Vohr <[email protected]>

docs/api/command-line-switches.md

@@ -241,19 +241,25 @@ Electron supports some of the [CLI flags][node-cli] supported by Node.js.
 
 **Note:** Passing unsupported command line switches to Electron when it is not running in `ELECTRON_RUN_AS_NODE` will have no effect.
 
-### --inspect-brk\[=\[host:]port]
+### `--inspect-brk\[=\[host:]port]`
 
 Activate inspector on host:port and break at start of user script. Default host:port is 127.0.0.1:9229.
 
 Aliased to `--debug-brk=[host:]port`.
 
-### --inspect-port=\[host:]port
+#### `--inspect-brk-node[=[host:]port]`
+
+Activate inspector on `host:port` and break at start of the first internal
+JavaScript script executed when the inspector is available.
+Default `host:port` is `127.0.0.1:9229`.
+
+### `--inspect-port=\[host:]port`
 
 Set the `host:port` to be used when the inspector is activated. Useful when activating the inspector by sending the SIGUSR1 signal. Default host is `127.0.0.1`.
 
 Aliased to `--debug-port=[host:]port`.
 
-### --inspect\[=\[host:]port]
+### `--inspect\[=\[host:]port]`
 
 Activate inspector on `host:port`. Default is `127.0.0.1:9229`.
 
@@ -263,12 +269,28 @@ See the [Debugging the Main Process][debugging-main-process] guide for more deta
 
 Aliased to `--debug[=[host:]port`.
 
-### --inspect-publish-uid=stderr,http
+### `--inspect-publish-uid=stderr,http`
 
 Specify ways of the inspector web socket url exposure.
 
 By default inspector websocket url is available in stderr and under /json/list endpoint on http://host:port/json/list.
 
+### `--no-deprecation`
+
+Silence deprecation warnings.
+
+### `--throw-deprecation`
+
+Throw errors for deprecations.
+
+### `--trace-deprecation`
+
+Print stack traces for deprecations.
+
+### `--trace-warnings`
+
+Print stack traces for process warnings (including deprecations).
+
 [app]: app.md
 [append-switch]: command-line.md#commandlineappendswitchswitch-value
 [debugging-main-process]: ../tutorial/debugging-main-process.md

shell/common/node_bindings.cc

@@ -235,21 +235,30 @@ void ErrorMessageListener(v8::Local<v8::Message> message,
   }
 }
 
-// Only allow DebugOptions in non-ELECTRON_RUN_AS_NODE mode.
+// Only allow a specific subset of options in non-ELECTRON_RUN_AS_NODE mode.
 // If node CLI inspect support is disabled, allow no debug options.
-bool IsAllowedDebugOption(base::StringPiece option) {
-  static constexpr auto options = base::MakeFixedFlatSet<base::StringPiece>({
-      "--debug",
-      "--debug-brk",
-      "--debug-port",
-      "--inspect",
-      "--inspect-brk",
-      "--inspect-brk-node",
-      "--inspect-port",
-      "--inspect-publish-uid",
-  });
-
-  return electron::fuses::IsNodeCliInspectEnabled() && options.contains(option);
+bool IsAllowedOption(base::StringPiece option) {
+  static constexpr auto debug_options =
+      base::MakeFixedFlatSet<base::StringPiece>({
+          "--debug",
+          "--debug-brk",
+          "--debug-port",
+          "--inspect",
+          "--inspect-brk",
+          "--inspect-brk-node",
+          "--inspect-port",
+          "--inspect-publish-uid",
+      });
+
+  // This should be aligned with what's possible to set via the process object.
+  static constexpr auto options = base::MakeFixedFlatSet<base::StringPiece>(
+      {"--trace-warnings", "--trace-deprecation", "--throw-deprecation",
+       "--no-deprecation"});
+
+  if (debug_options.contains(option))
+    return electron::fuses::IsNodeCliInspectEnabled();
+
+  return options.contains(option);
 }
 
 // Initialize NODE_OPTIONS to pass to Node.js
@@ -405,8 +414,9 @@ void NodeBindings::SetNodeCliFlags() {
 #endif
     const auto stripped = base::StringPiece(option).substr(0, option.find('='));
 
-    // Only allow in no-op (--) option or DebugOptions
-    if (IsAllowedDebugOption(stripped) || stripped == "--")
+    // Only allow in no-op (--) option or a small set of debug
+    // and trace related options.
+    if (IsAllowedOption(stripped) || stripped == "--")
       args.push_back(option);
   }