Fix build config for web worker example

examples/web_worker_example/build.yaml

@@ -1,16 +1,31 @@
 targets:
-  # We use dartdevc by default, but the worker should always be compiled with dart2js
+  # This setup exists so that the main entrypoint (web/main.dart) gets compiled
+  # with dartdevc for debug builds while the worker is compiled with dart2js
+  # (since workers don't support the JS moduled emitted by dartdevc).
+  # In release builds (`--release` on the CLI), both entrypoints are compiled
+  # with dart2js.
+  #
+  # If you're ok with compiling everything with dart2js, just use
+  # `compiler: dartj2s` on the options of the default target and ignore the two
+  # additional targets here.
+  dart2js_archives:
+    auto_apply_builders: false
+    dependencies: [":$default", ":worker"]
+    builders:
+      build_web_compilers:dart2js_archive_extractor:
+        enabled: true
   worker:
     auto_apply_builders: false
     dependencies: [":$default"]
     builders:
-      build_web_compilers|entrypoint:
+      build_web_compilers:entrypoint:
         enabled: true
         generate_for:
-         - web/worker.dart
+          - web/worker.dart
         options:
           compiler: dart2js
-
+      build_web_compilers:dart2js_archive_extractor:
+        enabled: false
 
   $default:
     builders:
@@ -22,8 +37,11 @@ targets:
           generate_values_in_copy_with: true
           named_parameters: true
           new_sql_code_generation: true
-      build_web_compilers|entrypoint:
+      build_web_compilers:entrypoint:
         generate_for:
           # This one is compiled in the other target
           exclude:
             - "web/worker.dart"
+      # We have a designated target for this step.
+      build_web_compilers:dart2js_archive_extractor:
+        enabled: false

examples/web_worker_example/lib/database.g.dart

@@ -166,8 +166,6 @@ class Entries extends Table with TableInfo<Entries, Entrie> {
   @override
   Set<GeneratedColumn> get $primaryKey => {id};
   @override
-  List<Set<GeneratedColumn>> get uniqueKeys => [];
-  @override
   Entrie map(Map<String, dynamic> data, {String? tablePrefix}) {
     return Entrie.fromData(data,
         prefix: tablePrefix != null ? '$tablePrefix.' : null);