mirror of
https://github.com/angular/angular
synced 2026-05-24 09:28:37 +00:00
Deliver web apps with confidence 🚀
bc54687c7b
In AOT compilations, the `strictInjectionParameters` compiler option can be enabled to report errors when an `@Injectable` annotated class has a constructor with parameters that do not provide an injection token, e.g. only a primitive type or interface. Since Ivy it's become required that any class with Angular behavior (e.g. the `ngOnDestroy` lifecycle hook) is decorated using an Angular decorator, which meant that `@Injectable()` may need to have been added to abstract base classes. Doing so would then report an error if `strictInjectionParameters` is enabled, if the abstract class has an incompatible constructor for DI purposes. This may be fine though, as a subclass may call the constructor explicitly without relying on Angular's DI mechanism. Therefore, this commit excludes abstract classes from the `strictInjectionParameters` check. This avoids an error from being reported at compile time. If the constructor ends up being used by Angular's DI system at runtime, then the factory function of the abstract class will throw an error by means of the `ɵɵinvalidFactory` instruction. In addition to the runtime error, this commit also analyzes the inheritance chain of an injectable without a constructor to verify that their inherited constructor is valid. BREAKING CHANGE: Invalid constructors for DI may now report compilation errors When a class inherits its constructor from a base class, the compiler may now report an error when that constructor cannot be used for DI purposes. This may either be because the base class is missing an Angular decorator such as `@Injectable()` or `@Directive()`, or because the constructor contains parameters which do not have an associated token (such as primitive types like `string`). These situations used to behave unexpectedly at runtime, where the class may be constructed without any of its constructor parameters, so this is now reported as an error during compilation. Any new errors that may be reported because of this change can be resolved either by decorating the base class from which the constructor is inherited, or by adding an explicit constructor to the class for which the error is reported. Closes #37914 PR Close #44615 |
||
|---|---|---|
| .circleci | ||
| .devcontainer | ||
| .github | ||
| .husky | ||
| .ng-dev | ||
| .vscode | ||
| .yarn | ||
| aio | ||
| devtools | ||
| docs | ||
| goldens | ||
| integration | ||
| modules | ||
| packages | ||
| scripts | ||
| third_party | ||
| tools | ||
| .bazelignore | ||
| .bazelrc | ||
| .bazelversion | ||
| .clang-format | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmessage | ||
| .mailmap | ||
| .npmrc | ||
| .nvmrc | ||
| .prettierrc | ||
| .pullapprove.yml | ||
| .yarnrc | ||
| browser-providers.conf.js | ||
| BUILD.bazel | ||
| CHANGELOG.md | ||
| CHANGELOG_ARCHIVE.md | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| gulpfile.js | ||
| karma-js.conf.js | ||
| LICENSE | ||
| package.json | ||
| README.md | ||
| renovate.json | ||
| SECURITY.md | ||
| tsconfig-tslint.json | ||
| tslint.json | ||
| WORKSPACE | ||
| yarn.lock | ||
| yarn.lock.readme.md | ||
Angular - The modern web developer's platform.
Angular is a development platform for building mobile and desktop web applications
using Typescript/JavaScript and other languages.
Contributing Guidelines
·
Submit an Issue
·
Blog
Documentation
Get started with Angular, learn the fundamentals and explore advanced topics on our documentation website.
Advanced
Development Setup
Prerequisites
- Install Node.js which includes Node Package Manager
Setting Up a Project
Install the Angular CLI globally:
npm install -g @angular/cli
Create workspace:
ng new [PROJECT NAME]
Run the application:
cd [PROJECT NAME]
ng serve
Angular is cross-platform, fast, scalable, has incredible tooling, and is loved by millions.
Quickstart
Ecosystem
Changelog
Learn about the latest improvements.
Upgrading
Check out our upgrade guide to find out the best way to upgrade your project.
Contributing
Contributing Guidelines
Read through our contributing guidelines to learn about our submission process, coding rules and more.
Want to Help?
Want to report a bug, contribute some code, or improve documentation? Excellent! Read up on our guidelines for contributing and then check out one of our issues labeled as help wanted or good first issue.
Code of Conduct
Help us keep Angular open and inclusive. Please read and follow our Code of Conduct.
Community
Join the conversation and help the community.
Love Angular? Give our repo a star ⭐ ⬆️.