revert strict dom check

packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/fragment.js

@@ -6,7 +6,6 @@ import { is_event_attribute, is_text_attribute } from '../../../../../utils/ast.
 import * as b from '#compiler/builders';
 import { is_custom_element_node } from '../../../../nodes.js';
 import { build_template_chunk } from './utils.js';
-import { ELEMENT_NODE, TEXT_NODE } from '#client/constants';
 
 /**
  * Processes an array of template nodes, joining sibling text/expression nodes
@@ -26,11 +25,8 @@ export function process_children(nodes, initial, is_element, context) {
 	/** @type {Sequence} */
 	let sequence = [];
 
-	/**
+	/** @param {boolean} is_text */
-	 * @param {boolean} is_text
+	function get_node(is_text) {
-	 * @param {number} node_type
-	 **/
-	function get_node(is_text, node_type) {
 		if (skipped === 0) {
 			return prev(is_text);
 		}
@@ -38,7 +34,6 @@ export function process_children(nodes, initial, is_element, context) {
 		return b.call(
 			'$.sibling',
 			prev(false),
-			b.literal(node_type),
 			(is_text || skipped !== 1) && b.literal(skipped),
 			is_text && b.true
 		);
@@ -49,10 +44,7 @@ export function process_children(nodes, initial, is_element, context) {
 	 * @param {string} name
 	 */
 	function flush_node(is_text, name) {
-		const expression = get_node(
+		const expression = get_node(is_text);
-			is_text,
-			name === 'text' ? TEXT_NODE : name === 'node' ? 0 : ELEMENT_NODE
-		);
 		let id = expression;
 
 		if (id.type !== 'Identifier') {

packages/svelte/src/internal/client/dom/operations.js

@@ -3,11 +3,9 @@ import { hydrate_node, hydrating, set_hydrate_node } from './hydration.js';
 import { DEV } from 'esm-env';
 import { init_array_prototype_warnings } from '../dev/equality.js';
 import { get_descriptor, is_extensible } from '../../shared/utils.js';
-import { COMMENT_NODE, TEXT_NODE, EFFECT_RAN } from '#client/constants';
-import { HYDRATION_END, HYDRATION_ERROR } from '../../../constants.js';
-import { hydration_mismatch } from '../warnings.js';
 import { active_effect } from '../runtime.js';
 import { async_mode_flag } from '../../flags/index.js';
+import { TEXT_NODE, EFFECT_RAN } from '#client/constants';
 
 // export these for reference in the compiled code, making global name deduplication unnecessary
 /** @type {Window} */
@@ -162,40 +160,26 @@ export function first_child(fragment, is_text) {
 /**
  * Don't mark this as side-effect-free, hydration needs to walk all nodes
  * @param {TemplateNode} node
- * @param {number} node_type
  * @param {number} count
- * @param {boolean} add_text
+ * @param {boolean} is_text
  * @returns {Node | null}
  */
-export function sibling(node, node_type, count = 1, add_text = false) {
+export function sibling(node, count = 1, is_text = false) {
-	var next_sibling = hydrating ? hydrate_node : node;
+	let next_sibling = hydrating ? hydrate_node : node;
 	var last_sibling;
 
 	while (count--) {
 		last_sibling = next_sibling;
 		next_sibling = /** @type {TemplateNode} */ (get_next_sibling(next_sibling));
-		if (
-			(next_sibling === null && !add_text) ||
-			(next_sibling?.nodeType === COMMENT_NODE &&
-				/** @type {Comment} */ (next_sibling).data === HYDRATION_END)
-		) {
-			hydration_mismatch();
-			throw HYDRATION_ERROR;
-		}
 	}
 
 	if (!hydrating) {
 		return next_sibling;
 	}
 
-	if (hydrating && node_type !== 0 && !add_text && next_sibling?.nodeType !== node_type) {
-		hydration_mismatch();
-		throw HYDRATION_ERROR;
-	}
-
 	// if a sibling {expression} is empty during SSR, there might be no
 	// text node to hydrate — we must therefore create one
-	if (add_text && next_sibling?.nodeType !== TEXT_NODE) {
+	if (is_text && next_sibling?.nodeType !== TEXT_NODE) {
 		var text = create_text();
 		// If the next sibling is `null` and we're handling text then it's because
 		// the SSR content was empty for the text, so we need to generate a new text
@@ -210,7 +194,7 @@ export function sibling(node, node_type, count = 1, add_text = false) {
 	}
 
 	set_hydrate_node(next_sibling);
-	return next_sibling;
+	return /** @type {TemplateNode} */ (next_sibling);
 }
 
 /**

packages/svelte/tests/snapshot/samples/await-block-scope/_expected/client/index.svelte.js

@@ -19,11 +19,11 @@ export default function Await_block_scope($$anchor) {
 
 	$.reset(button);
 
-	var node = $.sibling(button, 0, 2);
+	var node = $.sibling(button, 2);
 
 	$.await(node, () => $.get(promise), null, ($$anchor, counter) => {});
 
-	var text_1 = $.sibling(node, 3);
+	var text_1 = $.sibling(node);
 
 	$.template_effect(() => {
 		$.set_text(text, `clicks: ${counter.count ?? ''}`);

packages/svelte/tests/snapshot/samples/bind-component-snippet/_expected/client/index.svelte.js

@@ -28,7 +28,7 @@ export default function Bind_component_snippet($$anchor) {
 		}
 	});
 
-	var text_1 = $.sibling(node, 3);
+	var text_1 = $.sibling(node);
 
 	$.template_effect(() => $.set_text(text_1, ` value: ${$.get(value) ?? ''}`));
 	$.append($$anchor, fragment);

packages/svelte/tests/snapshot/samples/dynamic-attributes-casing/_expected/client/main.svelte.js

@@ -13,17 +13,17 @@ export default function Main($$anchor) {
 
 	$.set_attribute(div, 'foobar', x);
 
-	var svg = $.sibling(div, 1, 2);
+	var svg = $.sibling(div, 2);
 
 	$.set_attribute(svg, 'viewBox', x);
 
-	var custom_element = $.sibling(svg, 1, 2);
+	var custom_element = $.sibling(svg, 2);
 
 	$.set_custom_element_data(custom_element, 'fooBar', x);
 
-	var div_1 = $.sibling(custom_element, 1, 2);
+	var div_1 = $.sibling(custom_element, 2);
-	var svg_1 = $.sibling(div_1, 1, 2);
+	var svg_1 = $.sibling(div_1, 2);
-	var custom_element_1 = $.sibling(svg_1, 1, 2);
+	var custom_element_1 = $.sibling(svg_1, 2);
 
 	$.template_effect(() => $.set_custom_element_data(custom_element_1, 'fooBar', y()));
 

packages/svelte/tests/snapshot/samples/nullish-coallescence-omittance/_expected/client/index.svelte.js

@@ -12,11 +12,11 @@ export default function Nullish_coallescence_omittance($$anchor) {
 
 	h1.textContent = 'Hello, world!';
 
-	var b = $.sibling(h1, 1, 2);
+	var b = $.sibling(h1, 2);
 
 	b.textContent = '123';
 
-	var button = $.sibling(b, 1, 2);
+	var button = $.sibling(b, 2);
 
 	button.__click = [on_click, count];
 
@@ -24,7 +24,7 @@ export default function Nullish_coallescence_omittance($$anchor) {
 
 	$.reset(button);
 
-	var h1_1 = $.sibling(button, 1, 2);
+	var h1_1 = $.sibling(button, 2);
 
 	h1_1.textContent = 'Hello, world';
 	$.template_effect(() => $.set_text(text, `Count is ${$.get(count) ?? ''}`));

packages/svelte/tests/snapshot/samples/purity/_expected/client/index.svelte.js

@@ -10,11 +10,11 @@ export default function Purity($$anchor) {
 
 	p.textContent = '0';
 
-	var p_1 = $.sibling(p, 1, 2);
+	var p_1 = $.sibling(p, 2);
 
 	p_1.textContent = location.href;
 
-	var node = $.sibling(p_1, 0, 2);
+	var node = $.sibling(p_1, 2);
 
 	Child(node, { prop: encodeURIComponent('hello') });
 	$.append($$anchor, fragment);

packages/svelte/tests/snapshot/samples/skip-static-subtree/_expected/client/index.svelte.js

@@ -5,43 +5,43 @@ var root = $.from_html(`<header><nav><a href="/">Home</a> <a href="/away">Away</
 
 export default function Skip_static_subtree($$anchor, $$props) {
 	var fragment = root();
-	var main = $.sibling($.first_child(fragment), 1, 2);
+	var main = $.sibling($.first_child(fragment), 2);
 	var h1 = $.child(main);
 	var text = $.child(h1, true);
 
 	$.reset(h1);
 
-	var node = $.sibling(h1, 0, 10);
+	var node = $.sibling(h1, 10);
 
 	$.html(node, () => $$props.content);
 	$.next(14);
 	$.reset(main);
 
-	var cant_skip = $.sibling(main, 1, 2);
+	var cant_skip = $.sibling(main, 2);
 	var custom_elements = $.child(cant_skip);
 
 	$.set_custom_element_data(custom_elements, 'with', 'attributes');
 	$.reset(cant_skip);
 
-	var div = $.sibling(cant_skip, 1, 2);
+	var div = $.sibling(cant_skip, 2);
 	var input = $.child(div);
 
 	$.autofocus(input, true);
 	$.reset(div);
 
-	var div_1 = $.sibling(div, 1, 2);
+	var div_1 = $.sibling(div, 2);
 	var source = $.child(div_1);
 
 	source.muted = true;
 	$.reset(div_1);
 
-	var select = $.sibling(div_1, 1, 2);
+	var select = $.sibling(div_1, 2);
 	var option = $.child(select);
 
 	option.value = option.__value = 'a';
 	$.reset(select);
 
-	var img = $.sibling(select, 1, 2);
+	var img = $.sibling(select, 2);
 
 	$.next(2);
 	$.template_effect(() => $.set_text(text, $$props.title));

packages/svelte/tests/snapshot/samples/state-proxy-literal/_expected/client/index.svelte.js

@@ -18,11 +18,11 @@ export default function State_proxy_literal($$anchor) {
 
 	$.remove_input_defaults(input);
 
-	var input_1 = $.sibling(input, 1, 2);
+	var input_1 = $.sibling(input, 2);
 
 	$.remove_input_defaults(input_1);
 
-	var button = $.sibling(input_1, 1, 2);
+	var button = $.sibling(input_1, 2);
 
 	button.__click = [reset, str, tpl];
 	$.bind_value(input, () => $.get(str), ($$value) => $.set(str, $$value));