Angular 16 Introduces Required @Input

Angular 16, the latest major release of the Angular framework, has arrived, bringing with it a host of exciting features and enhancements. One notable addition is the ability to mark inputs as required, further empowering developers to build robust and error-free applications.

With required inputs, you can ensure that your components and directives are used correctly, preventing accidental misuse. For instance, if your component relies on a specific input value to function correctly, you can now mark it as required, safeguarding against scenarios where the value is missing.

Implementing required inputs is straightforward. Simply add the required property to the @Input() decorator, like so:

typescript
@Component({
 selector: 'my-component',
 template: `
 <div>{{message}}</div>
 `,
 })
 export class MyComponent {
 @Input({ required: true }) message: string; 
}         

• When you use the MyComponent without providing a value for the message input, Angular will now throw an error, preventing any potential issues.

Here are some notable advantages of utilizing required inputs:

• They enhance error prevention by ensuring that all required inputs are provided before the component or directive is used.
• They improve code readability by clearly indicating which inputs are required.
• They boost code maintainability by facilitating identification of necessary input changes during component or directive updates.

Examples of how you can leverage required inputs include:

• Enforcing input values for required fields in forms.
• Ensuring the correct usage of components and directives by specifying required inputs.
• Preventing accidental misuse of components and directives.

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