GeezerVison is showing angular.dev — reflectComponentType • Angular
@paramcomponentType<C>Component class reference.
@returnsComponentMirror<C> | nullAn object that allows to retrieve component metadata.
The example below demonstrates how to use the function and how the fields
of the returned object map to the component metadata.
@Component({
selector: 'foo-component',
template: `
<ng-content></ng-content>
<ng-content select="content-selector-a"></ng-content>
`,
})
class FooComponent {
@Input('inputName') inputPropName: string;
@Output('outputName') outputPropName = new EventEmitter<void>();
}
const mirror = reflectComponentType(FooComponent);
expect(mirror.type).toBe(FooComponent);
expect(mirror.selector).toBe('foo-component');
expect(mirror.isStandalone).toBe(true);
expect(mirror.inputs).toEqual([{propName: 'inputName', templateName: 'inputPropName'}]);
expect(mirror.outputs).toEqual([{propName: 'outputName', templateName: 'outputPropName'}]);
expect(mirror.ngContentSelectors).toEqual([
'*', // first `<ng-content>` in a template, the selector defaults to `*`
'content-selector-a' // second `<ng-content>` in a template
]);