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https://github.com/angular/angular
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43dfab447d
Fixes an issue where destroy hooks are not set up for `useClass` providers that rely on `forwardRef` for passing the actual class reference. Currently the destroy hooks are not captured because forward refs are not resolved for class providers. In ES2015+ this issue becomes even more critical if arrow-functions are used for e.g. `useClass: () => forwardRef(..)`. This is because arrow functions do not have a prototype, unlike in ES5 where the function assigned to `useClass` would always have a prototype. In ES2015+ a runtime exception as followed is returned (and doesn't give any useful indication of the forwardRef issue): ``` TypeError: Cannot read properties of undefined (reading 'ngOnDestroy') at registerDestroyHooksIfSupported (dist/packages/core/src/render3/di_setup.ts:196:35 <- dist/legacy-test-bundle.spec.js:41508:37) at resolveProvider (dist/packages/core/src/render3/di_setup.ts:153:9 <- dist/legacy-test-bundle.spec.js:41485:11) at resolveProvider (dist/packages/core/src/render3/di_setup.ts:70:7 <- dist/legacy-test-bundle.spec.js:41445:9) at providersResolver (dist/packages/core/src/render3/di_setup.ts:54:5 <- dist/legacy-test-bundle.spec.js:41438:7) at Object.definition.providersResolver (dist/packages/core/src/render3/features/providers_feature.ts:48:18 <- dist/legacy-test-bundle.spec.js:41600:16) at resolveDirectives (dist/packages/core/src/render3/instructions/shared.ts:1179:40 <- dist/legacy-test-bundle.spec.js:35611:17) at elementStartFirstCreatePass (dist/packages/core/src/render3/instructions/element.ts:40:7 <- dist/legacy-test-bundle.spec.js:38432:27) at ɵɵelementStart (dist/packages/core/src/render3/instructions/element.ts:87:7 <- dist/legacy-test-bundle.spec.js:38453:43) at ɵɵelement (dist/packages/core/src/render3/instructions/element.ts:180:3 <- dist/legacy-test-bundle.spec.js:38510:5) at MultipleFormControls_Template (ng:///MultipleFormControls.js:9:9) ``` PR Close #44281 |
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| .. | ||
| acceptance | ||
| animation | ||
| bundling | ||
| change_detection | ||
| compiler | ||
| debug | ||
| di | ||
| dom | ||
| i18n | ||
| linker | ||
| metadata | ||
| reflection | ||
| render3 | ||
| sanitization | ||
| strict_types | ||
| testability | ||
| util | ||
| zone | ||
| application_init_spec.ts | ||
| application_module_spec.ts | ||
| application_ref_integration_spec.ts | ||
| application_ref_spec.ts | ||
| BUILD.bazel | ||
| component_fixture_spec.ts | ||
| dev_mode_spec.ts | ||
| directive_lifecycle_integration_spec.ts | ||
| error_handler_spec.ts | ||
| event_emitter_spec.ts | ||
| fake_async_spec.ts | ||
| forward_ref_integration_spec.ts | ||
| test_bed_spec.ts | ||
| util_spec.ts | ||