Utilize the Lifecycle Interface within Angular 2 framework for enhanced application development

Can you explain the impact of this rule?

"use-lifecycle-interface": true,

Answer №1

Adding the implements keyword is required for each lifecycle hook you use in Angular,

Although Angular can still recognize and utilize the hooks without it, including the keyword improves code clarity and makes maintenance easier.

For example:

// Remember to import
import { AfterViewInit } from '@angular/core';
// Include the implements statement 
export class YourComponent implements AfterViewInit {
  // Implement this hook
  ngAfterViewInit() {
    // Add your code here...
  }
}

Answer №2

This rule is not part of the standard tslint rules - it's actually defined by the codelyzer library.

While there isn't much documentation on this specific rule in the GitHub repository, the author has included tests that give us some insight into what the use-life-cycle-interface rule entails:

it(`should fail if a life cycle hook is used without implementing its interface`, ...
it(`should fail if life cycle hooks are used without implementing their interfaces`,  ...
it(`should fail if some life cycle hooks are used without implementing their interfaces`, ...

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