fix: strip uninitialized class fields (useDefineForClassFields: false)#206
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ashley-hunter wants to merge 4 commits intovoidzero-dev:mainfrom
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fix: strip uninitialized class fields (useDefineForClassFields: false)#206ashley-hunter wants to merge 4 commits intovoidzero-dev:mainfrom
ashley-hunter wants to merge 4 commits intovoidzero-dev:mainfrom
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When `useDefineForClassFields: false` (Angular's default), TypeScript treats uninitialized fields as type-only declarations that produce no JS output. The compiler was preserving these fields, causing `vite:oxc` to lower them to `_defineProperty(this, "field", void 0)` which shadows prototype getters set up by legacy decorators (@select, @dispatch). AOT path: scan all classes for PropertyDefinition nodes without initializers and emit Edit::delete() spans for them. JIT path: enable oxc_transformer's existing `remove_class_fields_without_initializer` option in strip_typescript(). Controlled by new `strip_uninitialized_fields` option (default: true). Closes voidzero-dev#73 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Private fields (#foo) are JavaScript runtime syntax that declares a private slot on the class. They must not be stripped even without an initializer, unlike public fields which are TypeScript type annotations under useDefineForClassFields: false. Stripping them causes rolldown to panic because this.#foo references remain but the declaration is gone. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When an uninitialized field has a non-Angular decorator (@select, @dispatch, etc.), the field declaration is stripped but the decorator must survive as a __decorate() call on the prototype. This matches tsc's output with useDefineForClassFields: false — the field is gone from the class body but the decorator is applied via __decorate(). Without this, stripping the field also removes the decorator, so the prototype getter is never set up and the property is undefined at runtime. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Recent commits introduced unformatted Rust code in transform.rs and integration_test.rs, causing the `cargo fmt --check` CI step to fail. https://claude.ai/code/session_01DWNfhcEuAQRhSXyzv3abY6
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Summary
useDefineForClassFields: falsebehavior (Angular's default)_defineProperty(this, "field", void 0)shadows prototype getters set up by legacy decorators (@Select,@Dispatch)PropertyDefinitionnodes without initializers and deletes them via text editsoxc_transformer's existingremove_class_fields_without_initializeroptionstrip_uninitialized_fieldsoption (default:true) onTransformOptions#foo) — these are runtime syntax, not TypeScript type annotations__decorate()calls for non-Angular decorators on stripped fields (e.g.,@Select,@Dispatch), matching tsc's output where the field is removed from the class body but the decorator is applied via__decorate([...], Class.prototype, "field", void 0)__decoratefromtslibwhen decorator calls are emittedPossibly Closes #73
Field stripping rules
#)?foo = 'bar'@Dispatch() action = () => ...@Select(...) field$: Observable<T>__decorate()callfield: Observable<T>#private: stringstatic field: stringTest plan
declarefields, initializer preservation, opt-out, decorated fields with__decorateemission, private field preservation, JIT mode@Select/@Dispatchdecorators🤖 Generated with Claude Code