refactor: simplify computedArray getter

src/unstable/computedArray.ts

@@ -2,7 +2,7 @@ import { computed, ISignal } from '../index.js';
 
 export function computedArray<I, O>(
 	arr: ISignal<I[]>,
-	getGetter: (item: ISignal<I>, index: number) => () => O
+	getter: (item: I, index: number) => O
 ) {
 	const length = computed(() => arr.get().length);
 	const keys = computed(
@@ -20,7 +20,7 @@ export function computedArray<I, O>(
 			while (array.length < length.get()) {
 				const index = array.length;
 				const item = computed(() => arr.get()[index]);
-				array.push(computed(getGetter(item, index)));
+				array.push(computed(() => getter(item.get(), index)));
 			}
 			if (array.length > length.get()) {
 				array.length = length.get();

tests/computedArray.spec.ts

@@ -5,7 +5,7 @@ import { effect, signal } from './api';
 test('should get updated item value', () => {
 	const src = signal([1]);
 	const arr = computedArray(src, item => {
-		return () => item.get() + 1;
+		return item + 1;
 	});
 	expect(arr[0]).toBe(2);
 });
@@ -14,7 +14,7 @@ test('should watch item value change', () => {
 	const spy = vi.fn();
 	const src = signal([1]);
 	const arr = computedArray(src, item => {
-		return () => item.get() + 1;
+		return item + 1;
 	});
 	effect(() => {
 		spy();
@@ -29,7 +29,7 @@ test('should not trigger if item value did not change', () => {
 	const spy = vi.fn();
 	const src = signal([1]);
 	const arr = computedArray(src, item => {
-		return () => item.get() + 1;
+		return item + 1;
 	});
 	effect(() => {
 		spy();
@@ -44,12 +44,10 @@ test('should not trigger first item computed if source item did not change', ()
 	const spy = vi.fn();
 	const src = signal([1]);
 	const arr = computedArray(src, (item, i) => {
-		return () => {
-			if (i === 0) {
-				spy();
-			}
-			return item.get() + 1;
-		};
+		if (i === 0) {
+			spy();
+		}
+		return item + 1;
 	});
 	effect(() => arr[0]);
 	expect(spy).toHaveBeenCalledTimes(1);
@@ -63,7 +61,7 @@ test('should watch length change', () => {
 	const spy = vi.fn();
 	const src = signal([1]);
 	const arr = computedArray(src, item => {
-		return () => item.get() + 1;
+		return item + 1;
 	});
 	effect(() => {
 		spy();
@@ -80,7 +78,7 @@ test('should watch item remove', () => {
 	const spy = vi.fn();
 	const src = signal([1, 2]);
 	const arr = computedArray(src, item => {
-		return () => item.get() + 1;
+		return item + 1;
 	});
 	effect(() => {
 		spy();
@@ -97,10 +95,8 @@ test('should only trigger access items', () => {
 	const spy = vi.fn();
 	const src = signal([1, 2, 3, 4]);
 	const arr = computedArray(src, item => {
-		return () => {
-			spy();
-			return item.get() + 1;
-		};
+		spy();
+		return item + 1;
 	});
 	effect(() => {
 		arr[0];