Use --no-minify-wasm when creating devtools for releases.

tool/build_release.sh

@@ -81,7 +81,8 @@ flutter build web \
   --wasm \
   --pwa-strategy=offline-first \
   --release \
-  --no-tree-shake-icons
+  --no-tree-shake-icons \
+  --no-minify-wasm
 
 # Ensure permissions are set correctly on canvaskit binaries.
 chmod 0755 build/web/canvaskit/canvaskit.*

tool/lib/commands/build.dart

@@ -45,7 +45,8 @@ class BuildCommand extends Command {
       ..addPubGetFlag()
       ..addBulidModeOption()
       ..addWasmFlag()
-      ..addNoStripWasmFlag();
+      ..addNoStripWasmFlag()
+      ..addNoMinifyWasmFlag();
   }
 
   @override
@@ -67,6 +68,8 @@ class BuildCommand extends Command {
     final buildMode = results[SharedCommandArgs.buildMode.flagName] as String;
     final useWasm = results[SharedCommandArgs.wasm.flagName] as bool;
     final noStripWasm = results[SharedCommandArgs.noStripWasm.flagName] as bool;
+    final noMinifyWasm =
+        results[SharedCommandArgs.noMinifyWasm.flagName] as bool;
 
     final webBuildDir = Directory(
       path.join(repo.devtoolsAppDirectoryPath, 'build', 'web'),
@@ -105,6 +108,7 @@ class BuildCommand extends Command {
           if (useWasm) ...[
             SharedCommandArgs.wasm.asArg(),
             if (noStripWasm) SharedCommandArgs.noStripWasm.asArg(),
+            if (noMinifyWasm) SharedCommandArgs.noMinifyWasm.asArg(),
           ] else ...[
             // Do not minify stack traces in debug mode.
             if (buildMode == 'debug') '--dart2js-optimization=O1',

tool/lib/commands/serve.dart

@@ -92,6 +92,7 @@ class ServeCommand extends Command {
       ..addBulidModeOption()
       ..addWasmFlag()
       ..addNoStripWasmFlag()
+      ..addNoMinifyWasmFlag()
       // Flags defined in the server in DDS.
       ..addFlag(
         _machineFlag,
@@ -147,6 +148,7 @@ class ServeCommand extends Command {
         results[SharedCommandArgs.updatePerfetto.flagName] as bool;
     final useWasm = results[SharedCommandArgs.wasm.flagName] as bool;
     final noStripWasm = results[SharedCommandArgs.noStripWasm.flagName] as bool;
+    final noMinifyWasm = results[SharedCommandArgs.noMinifyWasm.flagName] as bool;
     final runPubGet = results[SharedCommandArgs.pubGet.flagName] as bool;
     final devToolsAppBuildMode =
         results[SharedCommandArgs.buildMode.flagName] as String;
@@ -172,6 +174,7 @@ class ServeCommand extends Command {
           ..remove(SharedCommandArgs.updatePerfetto.asArg())
           ..remove(SharedCommandArgs.wasm.asArg())
           ..remove(SharedCommandArgs.noStripWasm.asArg())
+          ..remove(SharedCommandArgs.noMinifyWasm.asArg())
           ..remove(valueAsArg(_buildAppFlag))
           ..remove(valueAsArg(_buildAppFlag, negated: true))
           ..remove(SharedCommandArgs.runApp.asArg())
@@ -221,6 +224,7 @@ class ServeCommand extends Command {
           if (updatePerfetto) SharedCommandArgs.updatePerfetto.asArg(),
           if (useWasm) SharedCommandArgs.wasm.asArg(),
           if (noStripWasm) SharedCommandArgs.noStripWasm.asArg(),
+          if (noMinifyWasm) SharedCommandArgs.noMinifyWasm.asArg(),
           '${SharedCommandArgs.buildMode.asArg()}=$devToolsAppBuildMode',
           SharedCommandArgs.pubGet.asArg(negated: !runPubGet),
         ]),

tool/lib/commands/shared.dart

@@ -84,6 +84,17 @@ extension BuildCommandArgsExtension on ArgParser {
     );
   }
 
+  void addNoMinifyWasmFlag() {
+    addFlag(
+      SharedCommandArgs.noMinifyWasm.flagName,
+      defaultsTo: false,
+      help:
+          'When this flag is present, class names and errors will not be '
+          'truncated. This flag is ignored if the --wasm flag is '
+          'not present.',
+    );
+  }
+
   void addDebugServerFlag() {
     addFlag(
       SharedCommandArgs.debugServer.flagName,
@@ -109,6 +120,7 @@ enum SharedCommandArgs {
   pubGet('pub-get'),
   wasm('wasm'),
   noStripWasm('no-strip-wasm'),
+  noMinifyWasm('no-minify-wasm'),
   runApp('run-app'),
   serveWithDartSdk('serve-with-dart-sdk'),
   updateFlutter('update-flutter'),