Using an angular generic type within an independent component

Creating a Dynamic Standalone Icon Component

I am working on developing a dynamic icon component that can be populated with a new set of assets in any module. I aim to pass a new enum as input and receive the appropriate type intelligence.

import { CommonModule } from '@angular/common';
import { Component, Input } from '@angular/core';

type StandardEnum = object;

@Component({
  selector: 'app-icon',
  templateUrl: './test.component.html',
  styleUrls: ['./test.component.scss'],
  standalone: true,
  imports: [CommonModule],
})
export class AppIconComponent<T extends StandardEnum> {
  static iconClass?: StandardEnum;
  @Input() iconName: keyof T;
  @Input() disabled: boolean;
  get iconClass(): T {
    return AppIconComponent.iconClass as T;
  }
  public static forRoot<U extends StandardEnum>(
    iconEnum?: U
  ): typeof AppIconComponent<U> {
    AppIconComponent.iconClass = iconEnum;
    return this;
  }
}

The component works as expected. However, when used in the app module, the following error occurs:

enum myEnum {
  ONE = 1,
}

@NgModule({
  imports: [
    AppIconComponent.forRoot<myEnum>(myEnum),
 ]
}) export class AppModule {}

Error Message :

    new (): AppIconComponent<typeof t>;
    prototype: AppIconComponent<any>;
    iconClass?: object;
    forRoot<U extends object>(iconEnum?: U): {
        ...;
    };
}
Value at position 0 in the NgModule.imports of AppModule is not a reference
  Value could not be determined statically.(-991010)
app.module.ts(16, 5): Unable to evaluate function call of complex function. A function must have exactly one return statement.
test.component.ts(17, 2): Function is declared here.

https://i.sstatic.net/UtVBD.png

Answer №1

For some reason, I was able to fix this issue by simply restarting my IDE. I prefer using VS Code for my work.

I came across a solution in response to a similar problem on Stack Overflow regarding Angular 9: Value at position X in the NgModule.imports is not a reference

To restart VS Code, all you have to do is use this command:

right ctrl + right shift for Windows. right command + right shift for Mac.

Hold down these keys and then press P and choose Developer: Reload Window

You can apply a similar approach depending on your IDE or text editor. Hopefully, this helps someone facing a similar situation.

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