tom_d4rt_generator 1.9.7

D4rt bridge generator for creating BridgedClass implementations from Dart source. Supports per-package generation, deduplication, and cross-package bridging.

tom_d4rt_generator

Attribution. The tom_d4rt project is an extended clone of the original d4rt project by Moustapha Kodjo Amadou, initially published in 2025. The complete interpreter is based on his idea.

D4rt bridge generator — reads buildkit.yaml, follows barrel exports, and emits *.b.dart files that register Dart APIs with the D4rt sandboxed interpreter.

---

Overview

D4rt is a sandboxed Dart interpreter. To call real Dart APIs from inside a D4rt script the interpreter needs a bridge: a generated class that maps interpreter method calls to native Dart invocations.

tom_d4rt_generator automates the entire bridge-writing process:

1. It reads a d4rtgen: block in your project's buildkit.yaml.
2. It follows barrel-file export chains, respecting show/hide clauses, to discover every class, enum, mixin, extension, global function, and global variable that should be bridged.
3. It uses the Dart analyzer (element-mode, summary-backed in v1.9.0) to extract constructors, methods, getters, setters, operators, type parameters, default values, and annotations.
4. It emits one or more *.b.dart output files — never to be hand-edited — containing BridgedClass registrations, relaxer wrappers, proxy classes, and a dartscript.b.dart entry-point that wires everything together.

The generated files are consumed at runtime by the tom_d4rt interpreter and by bridge corpus packages such as tom_d4rt_flutter and tom_d4rt_flutter_ast (the Flutter/Material bridge corpora — see Ecosystem).

Start here: doc/index.md is the navigation hub for this package's documentation. It maps the 17 docs into the four mechanism areas (A–D) summarised below and links each to its canonical reference. Read it before diving into the individual guides.

What it generates — the A–D taxonomy

The generator emits four categories of artifact. The labels A–D are used throughout the codebase and the docs; this README and doc/index.md share the same taxonomy:

Cat	Artifact	Selection	What it solves	Canonical doc
A	$Relaxed*<V> type-relaxing wrapper classes	auto (1 type param)	erased generics (ValueNotifier<dynamic> ≠ ValueNotifier<MagnifierInfo>)	generics_wrapper_and_type_relaxation_strategy.md
B	_relax* factory switches (registerGenericTypeWrapper)	auto + combinatorial	materialising a concrete type-arg at runtime	generics_wrapper_and_type_relaxation_strategy.md
C	_rc2* generic-constructor factories (registerGenericConstructor)	auto + combinatorial	MyClass<String>() without knowing the type at generation time	generic_constructor_and_other_extensions.md
D	D4rt* proxy classes (registerInterfaceProxy)	explicit proxyClasses:	native subclasses of abstract delegates (CustomPainter, FlowDelegate)	proxy_class_generation.md

The combinatorial B/C families dominate generated size; the reduction knobs (generateAllRelaxers / relaxerClasses / additionalRelaxerTypes, plus the scanned allowlist in generate_allowlists.md) trade generate-everything for a scanned allowlist.

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Installation

Add the generator as a dev dependency:

dev_dependencies:
  tom_d4rt_generator: ^1.9.4
  build_runner: ^2.4.0   # only needed for build_runner integration

The package ships a standalone CLI executable called d4rtgen; no additional activation step is required.

---

Quick Start

1. Add a d4rtgen: block to buildkit.yaml

# buildkit.yaml
d4rtgen:
  name: my_package
  helpersImport: package:tom_d4rt/tom_d4rt.dart
  generateBarrel: true
  barrelPath: lib/d4rt_bridges.b.dart
  generateDartscript: true
  dartscriptPath: lib/dartscript.b.dart
  registrationClass: MyPackageBridge
  generateTestRunner: true
  testRunnerPath: bin/d4rtrun.b.dart
  modules:
    - name: all
      barrelFiles:
        - lib/my_package.dart
      barrelImport: package:my_package/my_package.dart
      outputPath: lib/src/d4rt_bridges/my_package_bridges.b.dart

2. Run the generator

Using the d4rtgen CLI (recommended):

# Generate for the project in the current directory
dart run tom_d4rt_generator:d4rtgen --project=.

# Generate for a specific path
dart run tom_d4rt_generator:d4rtgen --project=/path/to/my_package

# Generate for multiple projects via comma-separated list or glob
dart run tom_d4rt_generator:d4rtgen --project=tom_*_bridges,devops/tom_build_cli

# Scan a workspace tree for all projects that have a d4rtgen config
dart run tom_d4rt_generator:d4rtgen --scan=. --recursive

# List discovered projects without generating
dart run tom_d4rt_generator:d4rtgen --scan=. --list

# Verbose output showing per-class progress
dart run tom_d4rt_generator:d4rtgen --project=. --verbose

Or via build_runner (useful for continuous watch mode):

dart run build_runner build
dart run build_runner watch

The build_runner builder key is tom_d4rt_generator:d4rt_bridge_builder.

3. Register bridges at runtime

Import and call the generated entry-point from your host application:

import 'package:tom_d4rt/d4rt.dart';
import 'package:my_package/dartscript.b.dart';

final d4rt = D4rt();
MyPackageBridge.registerBridges(d4rt, 'package:my_package/my_package.dart');

---

End-to-end worked example

A complete loop: a barrel exposes a native class, the generator bridges it, and a D4rt script calls it through the tom_d4rt interpreter.

1. The native API and its barrel (lib/my_package.dart):

// lib/src/temperature.dart
class Temperature {
  final double celsius;
  const Temperature(this.celsius);
  double get fahrenheit => celsius * 9 / 5 + 32;
  Temperature warmer(double by) => Temperature(celsius + by);
}

// lib/my_package.dart  (barrel)
export 'src/temperature.dart';

2. Generate the bridges with the d4rtgen: block from the Quick Start:

dart run tom_d4rt_generator:d4rtgen --project=.
# writes lib/src/d4rt_bridges/my_package_bridges.b.dart,
# lib/dartscript.b.dart, relaxers.b.dart, etc.

3. Register and run a script against the generated bridges:

import 'package:tom_d4rt/d4rt.dart';
import 'package:my_package/dartscript.b.dart';

void main() {
  final d4rt = D4rt();
  MyPackageBridge.registerBridges(
    d4rt,
    'package:my_package/my_package.dart',
  );

  final result = d4rt.execute(
    source: '''
      import 'package:my_package/my_package.dart';

      double main() {
        final t = Temperature(20).warmer(5); // 25 C
        return t.fahrenheit;                  // 77.0
      }
    ''',
  );

  print(result); // 77.0
}

The script never imports the native package directly — it runs inside the sandbox and reaches Temperature only through the generated BridgedClass. When the generator cannot derive correct code for a member, override just that member with a D4UserBridge (see UserBridge override system) without touching the rest of the generated file.

For runnable, multi-feature versions of this loop see the sample projects under tom_d4rt_samples/: d4rt_userbridges_sample (the hand-written override path this generator scans) and d4rt_introduction_sample (basic interpreter use of bridged APIs).

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Features

Barrel-file export following

The generator starts from the barrelFiles list and recursively follows export directives. It correctly propagates show/hide clauses through re-export chains (including multi-hop chains where clause intersection and union are applied at each hop). Packages that should be skipped during re-export traversal can be listed in skipReExports; alternatively set followAllReExports: false and enumerate only the packages you want via followReExports.

Per-package deduplication via PerPackageBridgeOrchestrator

When multiple barrel files re-export the same source package, the PerPackageBridgeOrchestrator generates a single package_<pkgname>_bridges.b.dart file per source package in a shared libraryPath directory. The per-module barrel files become thin delegating wrappers that import those per-package files. This eliminates duplicate BridgedClass registrations that would otherwise cause runtime conflicts.

Summary-backed extraction (v1.9.0)

All class extraction now runs through ElementModeExtractor, an element-walker backed by analyzer .sum summaries. The shared summary cache (tom_analyzer_shared) is reused by sibling generators (e.g., tom_reflection_generator). The legacy 16,000-line AST visitor path was removed entirely in this release.

Relaxer wrappers — $Relaxed<V>

For every generic class whose type argument must be materialised at runtime (e.g., Animation<double>, ValueNotifier<String>), the relaxer generator emits a $RelaxedAnimation<V> wrapper class plus a factory function with a switch dispatch over the concrete type argument. A registerRelaxers() function registers all factories with D4.registerGenericTypeWrapper(). The output file defaults to relaxers.b.dart alongside the first module's bridge file and can be overridden via relaxerOutputPath. Upstream relaxer modules can be imported and re-used rather than re-generated via priorRelaxerModules.

Proxy classes for abstract delegates

Configuring generateProxies: true and listing class names under proxyClasses causes the proxy generator to produce concrete subclasses for abstract delegates such as CustomPainter or CustomClipper. Each abstract method becomes a Function callback field so that D4rt scripts can supply callback implementations:

// Generated (do not edit):
class D4rtCustomPainter extends CustomPainter {
  final void Function(Canvas, Size) onPaint;
  final bool Function(CustomPainter) onShouldRepaint;
  D4rtCustomPainter({required this.onPaint, required this.onShouldRepaint});
  @override void paint(Canvas c, Size s) => onPaint(c, s);
  @override bool shouldRepaint(CustomPainter p) => onShouldRepaint(p);
}

Proxy class names default to D4rt<ClassName> and can be customised via a proxyName entry in the config.

Generic constructor factories (RC-2)

For classes with a single type parameter and matching constructors the generator emits a runtime-dispatch switch that selects the right native type at construction time, enabling D4rt scripts to write MyClass<String>() without knowing the concrete type at generation time.

Callback wrapping

Function-type parameters are automatically wrapped so that an interpreted callable stored in the interpreter's closure scope can be passed to native Dart code that expects a concrete Function type.

UserBridge override system

When the generator cannot produce correct code for a member (unusual operator signatures, platform-specific callbacks, etc.) you can write a companion class that overrides individual members while keeping all other generated code intact.

Declare a class that extends D4UserBridge, annotate it with @D4rtUserBridge(libraryPath) (or @D4rtGlobalsUserBridge(libraryPath) for top-level overrides), and place it in lib/src/d4rt_user_bridges/ or lib/d4rt_user_bridges/. The scanner (UserBridgeScanner) discovers the file automatically and the generator injects the overrides at code-emission time.

// lib/src/d4rt_user_bridges/matrix2x2_user_bridge.dart
import 'package:tom_d4rt/tom_d4rt.dart';
import 'package:my_package/src/matrix2x2.dart';

@D4rtUserBridge('package:my_package/src/matrix2x2.dart')
class Matrix2x2UserBridge extends D4UserBridge {
  static Object? overrideOperatorIndex(
    InterpreterVisitor visitor,
    Object target,
    List<Object?> positional,
    Map<String, Object?> named,
    List<RuntimeType>? typeArgs,
  ) {
    final matrix = D4.validateTarget<Matrix2x2>(target, 'Matrix2x2');
    final indices = D4.coerceList<int>(positional[0], 'indices');
    return matrix[indices];
  }
}

Override method naming conventions (all static, all prefixed override):

Override target	Method prefix
Default constructor	overrideConstructor
Named constructor foo	overrideConstructorFoo
Instance method bar	overrideMethodBar
Instance getter baz	overrideGetterBaz
Instance setter qux	overrideSetterQux
Static method foo	overrideStaticMethodFoo
Static getter bar	overrideStaticGetterBar
Operator []	overrideOperatorIndex
Operator []=	overrideOperatorIndexAssign
Operator +	overrideOperatorPlus
Operator ==	overrideOperatorEquals

For top-level (globals) overrides use @D4rtGlobalsUserBridge and prefix methods with overrideGlobalVariable, overrideGlobalGetter, or overrideGlobalFunction.

Mixin and extension bridging

Pure mixin declarations and named/anonymous extensions are bridged. Extension methods discovered by walking the import tree of each source file are included so D4rt scripts can call extension methods from packages like package:collection.

Type alias registration

Non-function typedef aliases (e.g., typedef MaterialStateProperty<T> = WidgetStateProperty<T>) are collected and registered via a generated classAliases() method so that D4rt scripts can reference the alias name directly.

Dart record types

Record types as function parameters and return values are fully supported. The generator emits conversion code that converts InterpretedRecord ↔ native Dart record at call sites.

Configurable D4rt runtime import

The d4rtImport key lets you point the generated files at an alternative runtime package (e.g., package:tom_d4rt_exec/d4rt.dart), making the generator reusable across different D4rt deployment targets.

Test infrastructure (testing.dart)

The optional testing.dart library exposes D4rtTester, D4rtTestResult, and IssueTestHelper for writing regression tests that execute D4rt scripts against real generated bridges. The generator ships 94+ D4rt test scripts covering constructors, fields, methods, operators, generics, inheritance, parameters, async, enums, and UserBridge overrides across six example projects.

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Configuration Reference

All keys live under a top-level d4rtgen: block in buildkit.yaml. This is a quick reference; the full configuration guide — with the advanced entry shapes (proxy variants, generic constructors/interceptors, recreators) and the registration-facade / annotation-directive surfaces — is in doc/tom_d4rt_generator_configuration.md.

Top-level keys

Key	Type	Default	Description
name	String	required	Project name used for class naming
modules	List	required	One or more module definitions (see below)
d4rtImport	String	package:tom_d4rt/d4rt.dart	D4rt runtime import in generated files
helpersImport	String	package:tom_d4rt/tom_d4rt.dart	D4rt helpers import
generateBarrel	bool	true	Emit a barrel file exporting all module bridges
barrelPath	String	—	Output path for the barrel file
generateDartscript	bool	true	Emit a dartscript.b.dart registration entry-point
dartscriptPath	String	—	Output path for the dartscript file
registrationClass	String	—	Name for the top-level registration class
libraryPath	String	auto-derived	Directory for per-package bridge files
generateTestRunner	bool	false	Emit an executable d4rtrun.b.dart test runner
testRunnerPath	String	—	Output path for the test runner
importedBridges	List	[]	External bridge packages to import and chain
recursiveBoundTypes	List<String>	[]	Additional types for recursive-bound dispatch
generateProxies	bool	false	Emit proxy subclasses for abstract delegates
proxiesOutputPath	String	—	Output path for the proxies file
proxyClasses	List	[]	Abstract classes to proxy (string or {className, proxyName})
relaxerOutputPath	String	auto-derived	Output path for the relaxer wrappers file
priorRelaxerModules	List<String>	[]	Upstream packages whose relaxers to import instead of re-generating
generateAllRelaxers	bool	true	When false, restrict the combinatorial relaxer/RC-2 surface to discovered sites + relaxerClasses + additionalRelaxerTypes (collapses output size)
relaxerClasses	List	[]	Extra classes kept eligible as relaxer/RC-2 type-args when generateAllRelaxers: false
additionalRelaxerTypes	List<String>	[]	Extra type names kept eligible when generateAllRelaxers: false (emitted by the corpus scanner)
recreatorClasses	List	[]	Single-type-param widgets to emit registerGenericTypeWrapper re-creators for (MCI#5)
genericInterceptors	List	[]	Type-arg-keyed re-dispatch interceptors (MCI#8 — e.g. RadioGroup.maybeOf<T>); dormant when empty
genericConstructors	List	[]	Templated RC-2 generic constructor factories (MCI#6 — e.g. GlobalKey<NavigatorState>()); dormant when empty
yieldVoidCallbacks	bool	false	Wrap void bridged callbacks in an async closure that yields to the event loop (tom_d4rt_flutter* only)

See doc/tom_d4rt_generator_configuration.md for the per-entry YAML shapes of proxyClasses, genericConstructors, genericInterceptors, and recreatorClasses.

Per-module keys (modules[*])

Key	Type	Default	Description
name	String	required	Module name
barrelFiles	List<String>	required (or inferred from barrelImport)	Barrel files to scan
barrelImport	String	—	Primary barrel URI for import-prefix generation
outputPath	String	required	Output *.b.dart file path
excludePatterns	List<String>	[]	Class-name glob patterns to skip
excludeClasses	List<String>	[]	Class names to skip
excludeEnums	List<String>	[]	Enum names to skip
excludeFunctions	List<String>	[]	Top-level function names to skip
excludeConstructors	List<String>	[]	Constructor names (Class.named) to skip
excludeVariables	List<String>	[]	Top-level variable names to skip
excludeSourcePatterns	List<String>	[]	Source URI glob patterns to skip; supports #symbol selectors
followAllReExports	bool	true	Follow all external re-exports by default
skipReExports	List<String>	[]	Package names to skip when following re-exports
followReExports	List<String>	[]	Package names to follow when followAllReExports is false
importShowClause	List<String>	[]	Symbols to include in generated import … show
importHideClause	List<String>	[]	Symbols to include in generated import … hide
generateDeprecatedElements	bool	false	Include @deprecated elements in output
deprecatedAllowlist	List<String>	[]	Per-symbol opt-in for deprecated elements even when generateDeprecatedElements: false

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Architecture and Key Concepts

BridgeGenerator

The core workhorse (lib/src/bridge_generator.dart, ~13,600 lines). Given a list of barrel files it:

1. Calls parseExportFiles() to walk the export graph and collect ExportInfo per source file (with resolved show/hide clauses).
2. Resolves each source file through an AnalysisContextCollection backed by .sum summary bundles.
3. Delegates to ElementModeExtractor to collect ClassInfo, GlobalFunctionInfo, GlobalVariableInfo, EnumInfo, and ExtensionInfo.
4. Emits the BridgedClass registration code.

ElementModeExtractor

Element-walker over LibraryElement (lib/src/element_mode_extractor.dart). Produces the same output types as the legacy AST visitor that was removed in v1.9.0. Handles type aliases, inheritance resolution, default-value rendering, metadata/annotation serialization, inherited members, and type substitution.

PerPackageBridgeOrchestrator

Four-phase deduplication engine (lib/src/per_package_orchestrator.dart):

1. Scans d4rt_user_bridges/ directories for UserBridgeScanner.
2. collectPackageInfo() — maps each source file to its owning package.
3. buildGlobalClassLookup() — builds a cross-package ClassInfo map for inheritance resolution.
4. generatePerPackageFiles() — generates one bridge file per source package with scoped exclusions.
5. generateDelegatingBarrelFiles() — generates thin barrel files that delegate to the per-package files.

UserBridgeScanner

Element-walker over LibraryElement that discovers classes extending D4UserBridge (lib/src/user_bridge_scanner.dart). Looks for @D4rtUserBridge(libraryPath, className?) and @D4rtGlobalsUserBridge(libraryPath) annotations. Extracts every override*-prefixed static method and maps it to the correct member category (constructor, getter, setter, method, static method, operator).

RelaxerGenerator

Consumes GenericExtractionSite records accumulated during bridge emission (lib/src/relaxer_generator.dart). Generates $Relaxed<Base><V> wrapper classes, per-module factory functions with switch dispatch on the concrete type argument, and a registerRelaxers() registration function.

ProxyGenerator

Reads the proxyClasses list from BridgeConfig, resolves each class through the analyzer, and emits concrete subclasses with Function callback fields for every abstract method and overridable getter (lib/src/proxy_generator.dart).

Generated file conventions

All generated files:

• Carry a // D4rt Bridge — Generated file, do not edit header and an ISO timestamp.
• Include a comprehensive // ignore_for_file: directive covering the pragmatic suppressions needed for generated bridge code.
• Use the *.b.dart extension (enforced by ensureBDartExtension()).
• Should never be committed to source control if you regenerate on every build.

The primary output files per project are:

File	Purpose
<outputPath>.b.dart (per module)	BridgedClass registrations for all classes, enums, extensions, and globals in that module
relaxers.b.dart	$Relaxed<T><V> wrapper classes and registerRelaxers()
proxies.b.dart (optional)	Concrete proxy subclasses for abstract delegates
d4rt_bridges.b.dart (barrel)	Re-exports all module bridge files
dartscript.b.dart	Top-level registerBridges() / register() entry-point
d4rtrun.b.dart (optional)	Executable test runner for validating bridges interactively

---

Programmatic API

import 'package:tom_d4rt_generator/tom_d4rt_generator.dart';

// Generate from a buildkit.yaml config file:
final result = await generateBridges(
  configPath: '/path/to/project/buildkit.yaml',
);

// Or from a BridgeConfig object:
final config = BridgeConfig.fromJson({...});
final result = await generateBridges(
  config: config,
  projectPath: '/path/to/project',
);

if (result.isSuccess) {
  print('Generated ${result.totalClasses} classes');
  print('Output files: ${result.outputFiles}');
}

---

Ecosystem

tom_d4rt (interpreter)
    |
    +-- tom_d4rt_generator  (THIS PACKAGE — bridge generator)
            |
            +-- tom_d4rt_flutter / tom_d4rt_flutter_ast
                (Flutter + Material bridge corpus — output of this generator)

The tom_d4rt interpreter package provides the runtime types (BridgedClass, D4UserBridge, D4rt, D4, InterpreterVisitor, RuntimeType, …) that the generated code depends on. tom_d4rt_generator produces the glue that maps interpreter calls to real Dart code. Bridge corpus packages (tom_d4rt_flutter_ast) are just Dart packages whose *.b.dart files were generated by this tool.

The tom_analyzer_shared package provides the shared .sum summary cache so tom_d4rt_generator and tom_reflection_generator can reuse each other's analysis work without re-scanning the same dependencies twice.

Repository: github.com/al-the-bear/tom_d4rt (monorepo), path tom_d4rt_generator/.

---

Further documentation

doc/index.md is the navigation hub — start there. The docs are grouped by the mechanism areas it defines:

Getting started

Document	Description
doc/index.md	Navigation hub — maps all docs into the A–D mechanism areas
Bridge Generator User Guide	End-to-end walkthrough
Configuration Guide	Authoritative full d4rtgen: buildkit.yaml model — all keys, advanced entry shapes, facades/annotations
CLI User Guide	d4rtgen command reference
build.yaml Builder Reference	build_runner builder-options reference

Generics (categories A/B/C)

Document	Description
Generics wrappers & type relaxation	A/B — $Relaxed*<V> wrappers and _relax* factory switches
Generic constructors & runtime extensions	C — _rc2* generic-constructor factories (RC-1…RC-5)
Generate allowlists	Reduction knobs and the scanned relaxer allowlist

Proxies (category D)

Document	Description
Proxy class generation	D — D4rt* proxy subclasses for abstract delegates

User bridges & annotation directives

Document	Description
UserBridge Guide	Writing @D4rtUserBridge override classes
UserBridge Design	Override pre-scan and registration routing internals
User proxy/relaxer annotations	@D4rtUserProxy / @D4rtUserRelaxer variant-pattern directives

Advanced

Document	Description
Deprecated allowlist	Per-symbol @Deprecated opt-in
VM↔web skew coercion	Nullability-skew coercion registry

Testing

Document	Description
Test coverage	Test-suite layout and coverage
Worked samples	Sample apps catalogued against the mechanisms they exercise
Issues	Known issues / open-issue log

Consumers and related packages

• tom_d4rt — the interpreter that provides the runtime types (BridgedClass, D4UserBridge, D4rt, D4, …) the generated code depends on.
• tom_d4rt_flutter — source-based Flutter/Material bridge corpus generated by this tool.
• tom_d4rt_flutter_ast — analyzer-free Flutter/ Material bridge corpus (web/OTA) generated by this tool.

---

Status

Mature — v1.9.4.

Version 1.9.0 completes a six-phase migration from a dual-path (AST + element) extraction model to a single element-mode code path backed by analyzer .sum summaries. The public generator API is unchanged. Generated bridge output for all five documented consumer packages is byte-identical to the pre-migration baseline (modulo the Generated: <timestamp> header). All known consumers have zero new regressions.

What's new in 1.9.3 – 1.9.4

1.9.4 — housekeeping. Test artifacts moved to a gitignored testlog/ folder; doc/ no longer ships machine-generated baselines. No code changes.

1.9.3 — generated-code hygiene & docs. Generated *.b.dart bridges now emit expanded // ignore_for_file: headers so corpora (including tom_d4rt_flutter) are analyzer-clean without per-file hand edits; proxy/relaxer manual-intervention guidance consolidated into doc/user_proxy_relaxer_annotations.md.

What's new in 1.9.1 – 1.9.2

1.9.1 — build_runner registration parity (fix). The build_runner / orchestrator path now emits a compiling dartscript.b.dart: the delegating barrel emits the subPackageBarrels() method the shared template calls, and the build_runner path now generates relaxers.b.dart (falling back to a resolvable no-op stub when there are no extraction sites). The standalone/CLI and build_runner paths now emit interchangeable registration code, locked by a new regression test that dart analyze-checks the assembled artifacts.

1.9.2 — annotation-driven proxies/relaxers and new template families.

• Annotation directives @D4rtUserProxy / @D4rtUserRelaxer, backed by a variant-pattern engine, let user bridges declare proxy/relaxer overrides (full treatment in the configuration & registration-facade docs).
• New template families: B3 generic-constructor reifiers, A4 RenderBox-proxy, super-constructor-arg capture factories, generic-type-arg proxy variants, State-proxy mixin variants, and generic interceptor re-dispatch.
• genericInterceptors config knob wired into BridgeConfig, plus a VM↔web signature-skew coercion table.
• yieldVoidCallbacks switch for cooperative input/frame yield: void callback wrappers are emitted as async closures awaiting a 1 ms delay.
• Per-symbol @Deprecated allowlist; opt-in vector_math_64 bridge.
• Requires tom_d4rt ^1.8.21.

The new config knobs (genericInterceptors, yieldVoidCallbacks) are documented in the Configuration section; the registration facades and the @D4rtUserProxy / @D4rtUserRelaxer annotations get their full reference in the registration-facade docs. See CHANGELOG.md for the complete entry.

Repository: https://github.com/al-the-bear/tom_d4rt/tree/main/tom_d4rt_generator

---

License

MIT License — see LICENSE for details.

Author: Alexis Kyaw (LinkedIn)