What is codelyzer?
Codelyzer is a static analysis tool for Angular projects that helps developers follow best practices and coding standards. It integrates with TSLint to provide a set of rules specific to Angular applications.
What are codelyzer's main functionalities?
Template Accessibility
Codelyzer can check for accessibility issues in Angular templates, such as ensuring that interactive elements are accessible to screen readers.
<button (click)="doSomething()">Click me</button>
Component Class Style
Codelyzer enforces consistent coding styles in Angular component classes, such as proper use of dependency injection and class member ordering.
class MyComponent { constructor(private myService: MyService) {} }
Template Syntax
Codelyzer checks for correct usage of Angular template syntax, ensuring that structural directives like *ngIf and *ngFor are used properly.
<div *ngIf="isVisible">Content</div>
Lifecycle Hooks
Codelyzer ensures that Angular lifecycle hooks are implemented correctly and follow best practices.
class MyComponent implements OnInit { ngOnInit() { console.log('Initialized'); } }
Other packages similar to codelyzer
eslint-plugin-angular
ESLint plugin for AngularJS applications. It provides a set of rules for AngularJS, similar to how Codelyzer provides rules for Angular. However, it is focused on AngularJS (1.x) rather than Angular (2+).
angular-eslint
A set of ESLint rules, configurations, and tools to lint Angular applications. It is similar to Codelyzer but uses ESLint instead of TSLint, which is beneficial as TSLint is deprecated.
tslint
TSLint is a static analysis tool for TypeScript code. While it is not specific to Angular, it can be extended with custom rules like those provided by Codelyzer. Note that TSLint is deprecated in favor of ESLint.