Generic type ‘ɵɵdirectivedeclaration’ requires between 6 and 8 type arguments.

The error message “generic type ‘ɵɵdirectivedeclaration’ requires between 6 and 8 type arguments” typically occurs in Angular applications when there is an issue with the declaration of a directive.

In Angular, directives allow you to manipulate the DOM and attach behavior to elements or components. When declaring a directive, you need to specify the required metadata and define the behavior.

The error message specifically refers to the generic type ‘ɵɵdirectivedeclaration’, which is an internal Angular type used for directive declaration. It expects between 6 and 8 type arguments to be provided, based on the specific configuration of the directive.

To resolve this error, you need to review the declaration of your directive and ensure that the correct number of type arguments are provided. Below is an example of a directive declaration with the required metadata:

    
      import { Directive } from '@angular/core';
      
      @Directive({
        selector: '[appCustomDirective]',
        exportAs: 'customDirective'
      })
      export class CustomDirective {
        // Directive logic and behavior
      }
    
  

In this example, we define a custom directive using the ‘@Directive’ decorator. The ‘selector’ property specifies the selector for the directive, which is used to apply the directive to elements or components in the template. The ‘exportAs’ property allows the directive to be exported and used within templates with a specific name.

Make sure you have the correct configuration and number of type arguments in your directive declaration, and the error should be resolved.