Load components dynamically by fetching them as variables

Currently, I am working on a rather intricate component loader project in Angular, and my goal is to dynamically retrieve the component instance from an rxjs store.

loadEditAreaComponent(component: any, componentInstanceData?: {}){
    const componentFactory = this.cfr.resolveComponentFactory(component);
    const viewContainerRef = this.editAreaHost.viewContainerRef;
    const componentRef = viewContainerRef.createComponent(componentFactory);
    Object.keys(componentInstanceData).forEach(key => {
      componentRef.instance[key] = componentInstanceData[key];
})

While it does function, I can't shake off the feeling that using any may not be the best approach. Unfortunately, I haven't been able to determine the correct type to use.

The signature of resolveComponentFactory reads as follows:

(method) ComponentFactoryResolver.resolveComponentFactory<unknown>(component: Type<unknown>): ComponentFactory<unknown>
.

When I input component: Type, the error message states:

Argument of type 'Type' is not assignable to parameter of type 'Type<unknown>'.

And when I try component: Type<unknown> or Type<any>, another error pops up: Type 'Type' is not generic.

I would greatly appreciate some guidance on this matter, along with a deeper understanding of the Typescript constraints that seem to be eluding me.

Thank you!

Answer №1

When calling the resolveComponentFactory method, make sure to follow this signature:

The resolveComponentFactory method should look like this:
abstract resolveComponentFactory<T>(component: Type<T>): ComponentFactory<T>;

It is important to use the same type:

Ensure you import { Type } from '@angular/core';

loadEditAreaComponent<T>(component: Type<T>, ...

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