dmorosinotto

import { Directive, OnDestroy } from "@angular/core";
import { Subject } from "rxjs";
import { takeUntil } from "rxjs/operators";

@Directive() // Needed only for Angular v9+ strict mode that enforce decorator to enable Component inheritance
export abstract class BaseComponent implements OnDestroy {
	// _destroy$ is LAZY: it'll be created (and allocate memory) only if you use takeUntilDestroy
	private _destroy$?: Subject<void>;
	protected takeUntilDestroy = <T>() => {
		if (!this._destroy$) this._destroy$ = new Subject<void>(); // LAZY Subject