fix: remove auto-dispose perf overhead

src/observables.ts

@@ -214,7 +214,6 @@ export function computed<T>(fn: () => T, options?: ComputedOptions<T>): Observab
 
       if (__DEV__) init = true;
       $computed[DIRTY] = false;
-      if (!$computed[OBSERVING]?.size) dispose($computed);
     }
 
     return currentValue;
@@ -369,7 +368,7 @@ export function onError<T = Error>(handler: (error: T) => void): void {
  * @see {@link https://github.com/maverick-js/observables#ondispose}
  */
 export function onDispose(dispose: MaybeDispose): Dispose {
-  if (!dispose || !currentScope || currentScope[DISPOSED]) return NOOP;
+  if (!dispose || !currentScope) return NOOP;
   (currentScope[DISPOSAL] ??= new Set()).add(dispose);
   return () => {
     (dispose as Dispose)();
@@ -461,7 +460,6 @@ function adopt(node: Node) {
 }
 
 function observe(observable: Node, observer: Node) {
-  if (observable[DISPOSED] || observer[DISPOSED]) return;
   (observable[OBSERVED_BY] ??= new Set()).add(observer);
   (observer[OBSERVING] ??= new Set()).add(observable);
 }

tests/dispose.test.ts

@@ -1,5 +1,5 @@
-import { computed, observable, tick, dispose, effect, root, getScope, onError } from '../src';
-import { CHILDREN, DISPOSED, OBSERVED_BY } from '../src/symbols';
+import { computed, observable, tick, dispose, effect, root, getScope } from '../src';
+import { CHILDREN, OBSERVED_BY } from '../src/symbols';
 
 afterEach(() => tick());
 
@@ -34,33 +34,6 @@ it('shoud remove observable from parent children set', () => {
   });
 });
 
-it('should auto-dispose computed if not observing anything', () => {
-  const $a = computed(() => null);
-  $a();
-
-  const $b = computed(() => $a());
-  $b();
-
-  expect($a[DISPOSED]).toBeTruthy();
-  expect($b[DISPOSED]).toBeTruthy();
-});
-
-it('should _not_ auto-dispose effect if error is thrown', async () => {
-  const $a = observable(0);
-
-  let shouldThrow = true,
-    effectScope;
-
-  effect(() => {
-    onError(() => {});
-    effectScope = getScope();
-    if (shouldThrow) throw Error();
-    $a();
-  });
-
-  expect(effectScope[DISPOSED]).toBeFalsy();
-});
-
 it('should stop observing effect', async () => {
   const $a = observable(0);