fix each indices

Author: Rich-Harris

packages/svelte/src/compiler/phases/scope.js

@@ -172,21 +172,18 @@ class Evaluation {
 						binding.kind === 'rest_prop' ||
 						binding.kind === 'bindable_prop';
 
+					if (binding.initial?.type === 'EachBlock' && binding.initial.index === expression.name) {
+						this.values.add(NUMBER);
+						break;
+					}
+
 					if (!binding.updated && binding.initial !== null && !is_prop) {
 						const evaluation = binding.scope.evaluate(/** @type {Expression} */ (binding.initial));
 						for (const value of evaluation.values) {
 							this.values.add(value);
 						}
 						break;
 					}
-					if (
-						binding.kind === 'each' &&
-						binding.initial?.type === 'EachBlock' &&
-						binding.initial.index === expression.name
-					) {
-						this.values.add(NUMBER);
-						break;
-					}
 				} else if (expression.name === 'undefined') {
 					this.values.add(undefined);
 					break;

packages/svelte/tests/snapshot/samples/each-index-non-null/_config.js

@@ -0,0 +1,3 @@
+import { test } from '../../test';
+
+export default test({});

packages/svelte/tests/snapshot/samples/each-index-non-null/_expected/client/index.svelte.js

@@ -0,0 +1,19 @@
+import 'svelte/internal/disclose-version';
+import 'svelte/internal/flags/legacy';
+import * as $ from 'svelte/internal/client';
+
+var root_1 = $.template(`<p></p>`);
+
+export default function Each_index_non_null($$anchor) {
+	var fragment = $.comment();
+	var node = $.first_child(fragment);
+
+	$.each(node, 0, () => Array(10), $.index, ($$anchor, $$item, i) => {
+		var p = root_1();
+
+		p.textContent = `index: ${i}`;
+		$.append($$anchor, p);
+	});
+
+	$.append($$anchor, fragment);
+}

packages/svelte/tests/snapshot/samples/each-index-non-null/_expected/server/index.svelte.js

@@ -0,0 +1,13 @@
+import * as $ from 'svelte/internal/server';
+
+export default function Each_index_non_null($$payload) {
+	const each_array = $.ensure_array_like(Array(10));
+
+	$$payload.out += `<!--[-->`;
+
+	for (let i = 0, $$length = each_array.length; i < $$length; i++) {
+		$$payload.out += `<p>index: ${$.escape(i)}</p>`;
+	}
+
+	$$payload.out += `<!--]-->`;
+}

packages/svelte/tests/snapshot/samples/each-index-non-null/index.svelte

@@ -0,0 +1,3 @@
+{#each Array(10), i}
+	<p>index: {i}</p>
+{/each}