debug_node-*.mjs is in 20.x production builds for zoneless app

[jponeill]

Which @angular/* package(s) are the source of the bug?

core

Is this a regression?

Yes

Description

Angular V20.x isn't released yet, but I'm seeing debug_node*.mjs code showing up in production builds for zoneless apps. I've attached the corresponding stats.json.

To reproduce:
1. ng new repro‐app --defaults
2. choose zoneless
3. cd repro-app
4. ng build --configuration production --source-map=false
5. Inspect dist/repro-app/stats.json or .mjs bundles
Observed
node_modules/@angular/core/fesm2022/debug_node-sP8Ihhla.mjs is still in the generated chunks, imported by signal-.mjs and root_effect_scheduler-*.mjs.

stats.json

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

Please provide the environment you discovered this bug in (run ng version)

Angular CLI: 20.0.0-next.9
Node: 22.15.0
Package Manager: npm 10.9.2
OS: darwin arm64

Angular: 20.0.0-next.9
... build, cli, common, compiler, compiler-cli, core, forms
... platform-browser, router

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.2000.0-next.9
@angular-devkit/core         20.0.0-next.9
@angular-devkit/schematics   20.0.0-next.9
@schematics/angular          20.0.0-next.9
rxjs                         7.8.2
typescript                   5.8.3
zone.js                      0.15.0

Anything else?

No response

[clydin]

That is just the name rollup gave the shared chunk. It contains legitimate runtime code for an application.

[jponeill]

Thanks, @clydin . Is it generated from this ?

angular/packages/core/src/debug/debug_node.ts

Line 4 in c39e799

*

(I noticed my bundle size is larger and hadn't seen this in the stats.json before).

[clydin]

According to the source map in the published package, these are all the source files that contribute to that chunk:

[
  "packages/core/src/util/closure.ts",
  "packages/core/src/util/decorators.ts",
  "packages/core/src/di/metadata.ts",
  "packages/core/src/compiler/compiler_facade.ts",
  "packages/core/src/di/jit/environment.ts",
  "packages/core/src/interface/type.ts",
  "packages/core/src/reflection/reflection_capabilities.ts",
  "packages/core/src/interface/simple_change.ts",
  "packages/core/src/render3/apply_value_input_field.ts",
  "packages/core/src/render3/features/ng_onchanges_feature.ts",
  "packages/core/src/render3/profiler.ts",
  "packages/core/src/render3/hooks.ts",
  "packages/core/src/render3/interfaces/injector.ts",
  "packages/core/src/render3/interfaces/node.ts",
  "packages/core/src/render3/node_assert.ts",
  "packages/core/src/render3/util/attrs_utils.ts",
  "packages/core/src/render3/util/injector_utils.ts",
  "packages/core/src/render3/di.ts",
  "packages/core/src/render3/instructions/di_attr.ts",
  "packages/core/src/di/metadata_attr.ts",
  "packages/core/src/di/jit/util.ts",
  "packages/core/src/di/jit/injectable.ts",
  "packages/core/src/di/injectable.ts",
  "packages/core/src/linker/element_ref.ts",
  "packages/core/src/linker/query_list.ts",
  "packages/core/src/hydration/skip_hydration.ts",
  "packages/core/src/change_detection/constants.ts",
  "packages/core/src/render3/interfaces/lview_tracking.ts",
  "packages/core/src/render3/interfaces/context.ts",
  "packages/core/src/render3/context_discovery.ts",
  "packages/core/src/render3/util/view_traversal_utils.ts",
  "packages/core/src/render3/util/discovery_utils.ts",
  "packages/core/src/render3/interfaces/document.ts",
  "packages/core/src/application/application_tokens.ts",
  "packages/core/src/transfer_state.ts",
  "packages/core/src/hydration/interfaces.ts",
  "packages/core/src/hydration/tokens.ts",
  "packages/core/src/application/tracing.ts",
  "packages/core/src/util/performance.ts",
  "packages/core/src/change_detection/scheduling/flags.ts",
  "packages/core/src/event_emitter.ts",
  "packages/core/src/util/callback_scheduler.ts",
  "packages/core/src/zone/async-stack-tagging.ts",
  "packages/core/src/zone/ng_zone.ts",
  "packages/core/src/render3/after_render/manager.ts",
  "packages/core/src/render3/after_render/hooks.ts",
  "packages/core/src/defer/interfaces.ts",
  "packages/core/src/defer/cleanup.ts",
  "packages/core/src/defer/utils.ts",
  "packages/core/src/defer/dom_triggers.ts",
  "packages/core/src/event_delegation_utils.ts",
  "packages/core/src/defer/registry.ts",
  "packages/core/src/hydration/utils.ts",
  "packages/core/src/render3/queries/query_execution.ts",
  "packages/core/src/metadata/view.ts",
  "packages/core/src/util/security/trusted_types.ts",
  "packages/core/src/util/security/trusted_types_bypass.ts",
  "packages/core/src/sanitization/bypass.ts",
  "packages/core/src/sanitization/inert_body.ts",
  "packages/core/src/sanitization/url_sanitizer.ts",
  "packages/core/src/sanitization/html_sanitizer.ts",
  "packages/core/src/sanitization/security.ts",
  "packages/core/src/sanitization/sanitization.ts",
  "packages/core/src/util/dom.ts",
  "packages/core/src/ng_reflect.ts",
  "packages/core/src/metadata/schema.ts",
  "packages/core/src/render3/instructions/element_validation.ts",
  "packages/core/src/render3/util/misc_utils.ts",
  "packages/core/src/render3/errors.ts",
  "packages/core/src/render3/styling/class_differ.ts",
  "packages/core/src/render3/node_selector_matcher.ts",
  "packages/core/src/render3/tokens.ts",
  "packages/core/src/render3/dom_node_manipulation.ts",
  "packages/core/src/render3/view/construction.ts",
  "packages/core/src/render3/instructions/advance.ts",
  "packages/core/src/render3/interfaces/input_flags.ts",
  "packages/core/src/render3/instructions/write_to_directive_input.ts",
  "packages/core/src/render3/instructions/shared.ts",
  "packages/core/src/render3/instructions/render.ts",
  "packages/core/src/render3/view_manipulation.ts",
  "packages/core/src/change_detection/use_exhaustive_check_no_changes.ts",
  "packages/core/src/render3/i18n/i18n_tree_shaking.ts",
  "packages/core/src/render/api_flags.ts",
  "packages/core/src/i18n/utils.ts",
  "packages/core/src/render3/node_manipulation.ts",
  "packages/core/src/render3/collect_native_nodes.ts",
  "packages/core/src/render3/after_render/view.ts",
  "packages/core/src/render3/reactive_lview_consumer.ts",
  "packages/core/src/render3/reactivity/view_effect_runner.ts",
  "packages/core/src/render3/instructions/change_detection.ts",
  "packages/core/src/render3/instructions/mark_view_dirty.ts",
  "packages/core/src/render3/view/container.ts",
  "packages/core/src/render3/view_ref.ts",
  "packages/core/src/linker/template_ref.ts",
  "packages/core/src/hydration/error_handling.ts",
  "packages/core/src/render3/node_manipulation_i18n.ts",
  "packages/core/src/render3/tnode_manipulation.ts",
  "packages/core/src/render3/i18n/i18n_insert_before_index.ts",
  "packages/core/src/render3/i18n/i18n_util.ts",
  "packages/core/src/render3/instructions/i18n_icu_container_visitor.ts",
  "packages/core/src/hydration/compression.ts",
  "packages/core/src/hydration/node_lookup_utils.ts",
  "packages/core/src/hydration/i18n.ts",
  "packages/core/src/hydration/cleanup.ts",
  "packages/core/src/hydration/views.ts",
  "packages/core/src/linker/component_factory.ts",
  "packages/core/src/linker/component_factory_resolver.ts",
  "packages/core/src/render/api.ts",
  "packages/core/src/sanitization/sanitizer.ts",
  "packages/core/src/render3/jit/util.ts",
  "packages/core/src/render3/deps_tracker/deps_tracker.ts",
  "packages/core/src/view/provider_flags.ts",
  "packages/core/src/render3/chained_injector.ts",
  "packages/core/src/render3/styling/static_styling.ts",
  "packages/core/src/render3/instructions/di.ts",
  "packages/core/src/render3/view/directives.ts",
  "packages/core/src/render3/view/elements.ts",
  "packages/core/src/util/iterable.ts",
  "packages/core/src/util/comparison.ts",
  "packages/core/src/render3/bindings.ts",
  "packages/core/src/render3/view/listeners.ts",
  "packages/core/src/render3/view/directive_outputs.ts",
  "packages/core/src/render3/dynamic_bindings.ts",
  "packages/core/src/render3/component_ref.ts",
  "packages/core/src/linker/view_container_ref.ts",
  "packages/core/src/render3/queries/query.ts",
  "packages/core/src/render3/queries/query_reactive.ts",
  "packages/core/src/metadata/resource_loading.ts",
  "packages/core/src/linker/ng_module_registration.ts",
  "packages/core/src/sanitization/iframe_attrs_validation.ts",
  "packages/core/src/linker/ng_module_factory.ts",
  "packages/core/src/render3/ng_module_ref.ts",
  "packages/core/src/render3/standalone_service.ts",
  "packages/core/src/render3/definition.ts",
  "packages/core/src/render3/features/inherit_definition_feature.ts",
  "packages/core/src/render3/features/copy_definition_feature.ts",
  "packages/core/src/render3/features/host_directives_feature.ts",
  "packages/core/src/render3/instructions/template.ts",
  "packages/core/src/defer/idle_scheduler.ts",
  "packages/core/src/defer/timer_scheduler.ts",
  "packages/core/src/cached_injector_service.ts",
  "packages/core/src/defer/rendering.ts",
  "packages/core/src/render3/metadata.ts",
  "packages/core/src/console.ts",
  "packages/core/src/render3/debug/framework_injector_profiler.ts",
  "packages/core/src/render3/util/change_detection_utils.ts",
  "packages/core/src/defer/discovery.ts",
  "packages/core/src/render3/util/defer.ts",
  "packages/core/src/render3/util/injector_discovery_utils.ts",
  "packages/core/src/render3/util/signal_debug.ts",
  "packages/core/src/render3/debug/chrome_dev_tools_performance.ts",
  "packages/core/src/render3/util/global_utils.ts",
  "packages/core/src/testability/testability.ts",
  "packages/core/src/util/lang.ts",
  "packages/core/src/application/application_init.ts",
  "packages/core/src/application/application_ref.ts",
  "packages/core/src/defer/triggering.ts",
  "packages/core/src/defer/instructions.ts",
  "packages/core/src/render3/instructions/attribute.ts",
  "packages/core/src/render3/instructions/interpolation.ts",
  "packages/core/src/render3/instructions/attribute_interpolation.ts",
  "packages/core/src/render3/interfaces/styling.ts",
  "packages/core/src/render3/styling/style_binding_list.ts",
  "packages/core/src/render3/styling/styling_parser.ts",
  "packages/core/src/render3/instructions/property.ts",
  "packages/core/src/render3/instructions/styling.ts",
  "packages/core/src/render3/instructions/class_map_interpolation.ts",
  "packages/core/src/render3/instructions/component_instance.ts",
  "packages/core/src/render3/list_reconciliation.ts",
  "packages/core/src/render3/instructions/control_flow.ts",
  "packages/core/src/render3/instructions/element.ts",
  "packages/core/src/render3/instructions/element_container.ts",
  "packages/core/src/render3/instructions/get_current_view.ts",
  "packages/core/src/render3/instructions/dom_property.ts",
  "packages/core/src/i18n/locale_en.ts",
  "packages/core/src/i18n/locale_data_api.ts",
  "packages/core/src/i18n/localization.ts",
  "packages/core/src/render3/interfaces/i18n.ts",
  "packages/core/src/render3/i18n/i18n_locale_id.ts",
  "packages/core/src/render3/i18n/i18n_apply.ts",
  "packages/core/src/render3/i18n/i18n_debug.ts",
  "packages/core/src/render3/i18n/i18n_parse.ts",
  "packages/core/src/render3/i18n/i18n_postprocess.ts",
  "packages/core/src/render3/instructions/i18n.ts",
  "packages/core/src/render3/instructions/listener.ts",
  "packages/core/src/render3/instructions/next_context.ts",
  "packages/core/src/render3/instructions/projection.ts",
  "packages/core/src/render3/instructions/property_interpolation.ts",
  "packages/core/src/render3/instructions/queries.ts",
  "packages/core/src/render3/instructions/queries_signals.ts",
  "packages/core/src/render3/instructions/storage.ts",
  "packages/core/src/render3/instructions/style_map_interpolation.ts",
  "packages/core/src/render3/instructions/style_prop_interpolation.ts",
  "packages/core/src/render3/instructions/text.ts",
  "packages/core/src/render3/instructions/text_interpolation.ts",
  "packages/core/src/render3/instructions/two_way.ts",
  "packages/core/src/render3/instructions/let_declaration.ts",
  "packages/core/src/render3/instructions/attach_source_locations.ts",
  "packages/core/src/render3/di_setup.ts",
  "packages/core/src/render3/features/providers_feature.ts",
  "packages/core/src/render3/features/external_styles_feature.ts",
  "packages/core/src/render3/scope.ts",
  "packages/core/src/render3/pure_function.ts",
  "packages/core/src/render3/pipe.ts",
  "packages/core/src/render3/view_engine_compatibility_prebound.ts",
  "packages/core/src/render3/local_compilation.ts",
  "packages/core/src/render3/debug/set_debug_info.ts",
  "packages/core/src/render3/hmr.ts",
  "packages/core/src/render3/jit/environment.ts",
  "packages/core/src/render3/jit/jit_options.ts",
  "packages/core/src/render3/jit/module.ts",
  "packages/core/src/render3/jit/directive.ts",
  "packages/core/src/render3/jit/pipe.ts",
  "packages/core/src/metadata/directives.ts",
  "packages/core/src/metadata/ng_module.ts",
  "packages/core/src/linker/compiler.ts",
  "packages/core/src/change_detection/scheduling/ng_zone_scheduling.ts",
  "packages/core/src/change_detection/scheduling/zoneless_scheduling_impl.ts",
  "packages/core/src/i18n/tokens.ts",
  "packages/core/src/debug/debug_node.ts"
]

[alan-agius4]

As @clydin mentioned this is just the dynamic name the rollup generates.

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