How is possible disable ???

[gangsthub]

@JarekSour could you provide a better explanation of what you are trying to achieve, please?

I think, you could use something like this:

[ngClass]="{ disabled: ((tagsArray && !tagsArray.length) || !tagsArray) }"

.disabled {
  opacity: .6;
  pointer-events: none;
  user-select: none;
}