Is it possible to utilize JavaScript global object constructors, such as Array, within the angular 5 view without having to explicitly declare them in the component?
In my particular case, I require access to Array.from() directly within the view.
Currently, I am including 'Array:any' in the fields of my components and setting it up in the constructor like this: 'this.Array = Array'. Is there a more efficient or suggested approach for achieving this?
There is a clever workaround that can achieve this, using the syntax {{ [].constructor.from(foo) }}.
However, it is strongly advised against implementing this in actual applications due to its code smell, negative impact on performance, and potential for introducing an XY problem.
This type of functionality should be refactored into a component class. While Array.from can be utilized in templates to create arrays from other iterables, it is recommended to use it within a pure pipe:
@Pipe({ name: 'array' })
class ArrayPipe implements PipeTransform {
transform(iterable: ArrayLike<any> | Iterable<any>): Array<any> {
return Array.from(iterable);
}
}
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