diff --git a/packages/svelte/src/compiler/phases/2-analyze/index.js b/packages/svelte/src/compiler/phases/2-analyze/index.js
index 046d89a3c0..f4719251bd 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/index.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/index.js
@@ -482,7 +482,8 @@ export function analyze_component(root, source, options) {
 		component_name: name,
 		dev: options.dev,
 		rootDir: options.rootDir,
-		runes
+		runes,
+		custom_renderer: custom_renderer
 	});
 
 	// TODO remove all the ?? stuff, we don't need it now that we're validating the config
@@ -535,7 +536,6 @@ export function analyze_component(root, source, options) {
 		event_directive_node: null,
 		uses_event_attributes: false,
 		custom_element,
-		custom_renderer,
 		inject_styles: css === 'injected' || is_custom_element,
 		accessors:
 			is_custom_element ||
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/AnimateDirective.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/AnimateDirective.js
index e1e431cc8b..8c5b1a6953 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/AnimateDirective.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/AnimateDirective.js
@@ -1,13 +1,14 @@
 /** @import { Context } from '../types' */
 /** @import { AST } from '#compiler'; */
 import * as e from '../../../errors.js';
+import { custom_renderer } from '../../../state.js';
 
 /**
  * @param {AST.AnimateDirective} node
  * @param {Context} context
  */
 export function AnimateDirective(node, context) {
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		e.incompatible_with_custom_renderer(node, '`animate:`');
 	}
 
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/Attribute.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/Attribute.js
index f9e3e18724..2563eb6dcd 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/Attribute.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/Attribute.js
@@ -2,6 +2,7 @@
 /** @import { Context } from '../types' */
 import { cannot_be_set_statically, can_delegate_event } from '../../../../utils.js';
 import { get_attribute_chunks, is_event_attribute } from '../../../utils/ast.js';
+import { custom_renderer } from '../../../state.js';
 import { mark_subtree_dynamic } from './shared/fragment.js';
 
 /**
@@ -60,7 +61,7 @@ export function Attribute(node, context) {
 			}
 
 			// we can't delegate event handlers in a non dom environment
-			if (!context.state.analysis.custom_renderer) {
+			if (!custom_renderer) {
 				node.metadata.delegated =
 					parent?.type === 'RegularElement' && can_delegate_event(node.name.slice(2));
 			}
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/BindDirective.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/BindDirective.js
index 5701ed438d..2fe202b302 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/BindDirective.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/BindDirective.js
@@ -12,6 +12,7 @@ import { binding_properties } from '../../bindings.js';
 import fuzzymatch from '../../1-parse/utils/fuzzymatch.js';
 import { is_content_editable_binding, is_svg } from '../../../../utils.js';
 import { mark_subtree_dynamic } from './shared/fragment.js';
+import { custom_renderer } from '../../../state.js';
 
 /**
  * @param {AST.BindDirective} node
@@ -27,7 +28,7 @@ export function BindDirective(node, context) {
 		parent?.type === 'SvelteDocument' ||
 		parent?.type === 'SvelteBody'
 	) {
-		if (context.state.analysis.custom_renderer) {
+		if (custom_renderer) {
 			e.incompatible_with_custom_renderer(node, '`bind:`');
 		}
 		if (node.name in binding_properties) {
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/ExpressionTag.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/ExpressionTag.js
index 519dee6a97..adc0d2d91d 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/ExpressionTag.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/ExpressionTag.js
@@ -2,6 +2,7 @@
 /** @import { Context } from '../types' */
 import { is_tag_valid_with_parent } from '../../../../html-tree-validation.js';
 import * as e from '../../../errors.js';
+import { custom_renderer } from '../../../state.js';
 import { mark_subtree_dynamic } from './shared/fragment.js';
 
 /**
@@ -11,7 +12,7 @@ import { mark_subtree_dynamic } from './shared/fragment.js';
 export function ExpressionTag(node, context) {
 	const in_template = context.path.at(-1)?.type === 'Fragment';
 
-	if (in_template && context.state.parent_element && !context.state.analysis.custom_renderer) {
+	if (in_template && context.state.parent_element && !custom_renderer) {
 		const message = is_tag_valid_with_parent('#text', context.state.parent_element);
 		if (message) {
 			e.node_invalid_placement(node, message);
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/HtmlTag.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/HtmlTag.js
index f5ba9cd3d3..55b0384105 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/HtmlTag.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/HtmlTag.js
@@ -3,13 +3,14 @@
 import { mark_subtree_dynamic } from './shared/fragment.js';
 import { validate_opening_tag } from './shared/utils.js';
 import * as e from '../../../errors.js';
+import { custom_renderer } from '../../../state.js';
 
 /**
  * @param {AST.HtmlTag} node
  * @param {Context} context
  */
 export function HtmlTag(node, context) {
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		e.incompatible_with_custom_renderer(node, '`@html`');
 	}
 	if (context.state.analysis.runes) {
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/OnDirective.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/OnDirective.js
index e9a3202505..f3f9c105b4 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/OnDirective.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/OnDirective.js
@@ -2,6 +2,7 @@
 /** @import { Context } from '../types' */
 import * as e from '../../../errors.js';
 import * as w from '../../../warnings.js';
+import { custom_renderer } from '../../../state.js';
 import { mark_subtree_dynamic } from './shared/fragment.js';
 
 /**
@@ -9,7 +10,7 @@ import { mark_subtree_dynamic } from './shared/fragment.js';
  * @param {Context} context
  */
 export function OnDirective(node, context) {
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		e.incompatible_with_custom_renderer(node, '`on:`');
 	}
 
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/RegularElement.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/RegularElement.js
index 383cebcaf6..6c7f80e37f 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/RegularElement.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/RegularElement.js
@@ -17,7 +17,7 @@ import { check_element } from './shared/a11y/index.js';
 import { validate_element } from './shared/element.js';
 import { mark_subtree_dynamic } from './shared/fragment.js';
 import { object } from '../../../utils/ast.js';
-import { runes } from '../../../state.js';
+import { runes, custom_renderer } from '../../../state.js';
 
 /**
  * @param {AST.RegularElement} node
@@ -26,7 +26,7 @@ import { runes } from '../../../state.js';
 export function RegularElement(node, context) {
 	validate_element(node, context);
 
-	if (!context.state.analysis.custom_renderer) {
+	if (!custom_renderer) {
 		check_element(node, context);
 	}
 
@@ -37,7 +37,7 @@ export function RegularElement(node, context) {
 	if (node.name === 'textarea' && node.fragment.nodes.length > 0) {
 		for (const attribute of node.attributes) {
 			if (attribute.type === 'Attribute' && attribute.name === 'value') {
-				if (!context.state.analysis.custom_renderer) {
+				if (!custom_renderer) {
 					e.textarea_invalid_content(node);
 				}
 			}
@@ -117,7 +117,7 @@ export function RegularElement(node, context) {
 	// We mark the subtree as dynamic so parent elements properly include the child init code
 	if (
 		(is_customizable_select_element(node) || node.name === 'selectedcontent') &&
-		!context.state.analysis.custom_renderer
+		!custom_renderer
 	) {
 		// Mark the element's own fragment as dynamic so it's not treated as static
 		node.fragment.metadata.dynamic = true;
@@ -165,7 +165,7 @@ export function RegularElement(node, context) {
 		mark_subtree_dynamic(context.path);
 	}
 
-	if (context.state.parent_element && !context.state.analysis.custom_renderer) {
+	if (context.state.parent_element && !custom_renderer) {
 		let past_parent = false;
 		let only_warn = false;
 		const ancestors = [context.state.parent_element];
@@ -227,7 +227,7 @@ export function RegularElement(node, context) {
 		!is_void(node_name) &&
 		!is_svg(node_name) &&
 		!is_mathml(node_name) &&
-		!context.state.analysis.custom_renderer
+		!custom_renderer
 	) {
 		w.element_invalid_self_closing_tag(node, node.name);
 	}
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteBody.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteBody.js
index 1bd353b689..2061664f6b 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteBody.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteBody.js
@@ -1,6 +1,7 @@
 /** @import { AST } from '#compiler' */
 /** @import { Context } from '../types' */
 import * as e from '../../../errors.js';
+import { custom_renderer } from '../../../state.js';
 import { is_event_attribute } from '../../../utils/ast.js';
 import { disallow_children } from './shared/special-element.js';
 
@@ -9,7 +10,7 @@ import { disallow_children } from './shared/special-element.js';
  * @param {Context} context
  */
 export function SvelteBody(node, context) {
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		e.incompatible_with_custom_renderer(node, '`<svelte:body>`');
 	}
 
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteDocument.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteDocument.js
index 067a228692..716ef01b8a 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteDocument.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteDocument.js
@@ -2,6 +2,7 @@
 /** @import { Context } from '../types' */
 import { disallow_children } from './shared/special-element.js';
 import * as e from '../../../errors.js';
+import { custom_renderer } from '../../../state.js';
 import { is_event_attribute } from '../../../utils/ast.js';
 
 /**
@@ -9,7 +10,7 @@ import { is_event_attribute } from '../../../utils/ast.js';
  * @param {Context} context
  */
 export function SvelteDocument(node, context) {
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		e.incompatible_with_custom_renderer(node, '`<svelte:document>`');
 	}
 
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteElement.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteElement.js
index 919ce897e0..c3f01cf6ab 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteElement.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteElement.js
@@ -5,6 +5,7 @@ import { is_text_attribute } from '../../../utils/ast.js';
 import { check_element } from './shared/a11y/index.js';
 import { validate_element } from './shared/element.js';
 import { mark_subtree_dynamic } from './shared/fragment.js';
+import { custom_renderer } from '../../../state.js';
 
 /**
  * @param {AST.SvelteElement} node
@@ -13,7 +14,7 @@ import { mark_subtree_dynamic } from './shared/fragment.js';
 export function SvelteElement(node, context) {
 	validate_element(node, context);
 
-	if (!context.state.analysis.custom_renderer) {
+	if (!custom_renderer) {
 		check_element(node, context);
 	}
 
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteHead.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteHead.js
index 253074e6a7..4a70ea078d 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteHead.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteHead.js
@@ -1,6 +1,7 @@
 /** @import { AST } from '#compiler' */
 /** @import { Context } from '../types' */
 import * as e from '../../../errors.js';
+import { custom_renderer } from '../../../state.js';
 import { mark_subtree_dynamic } from './shared/fragment.js';
 
 /**
@@ -8,7 +9,7 @@ import { mark_subtree_dynamic } from './shared/fragment.js';
  * @param {Context} context
  */
 export function SvelteHead(node, context) {
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		e.incompatible_with_custom_renderer(node, '`<svelte:head>`');
 	}
 
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteWindow.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteWindow.js
index ffaaa45258..2626a1bcea 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteWindow.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/SvelteWindow.js
@@ -2,6 +2,7 @@
 /** @import { Context } from '../types' */
 import { disallow_children } from './shared/special-element.js';
 import * as e from '../../../errors.js';
+import { custom_renderer } from '../../../state.js';
 import { is_event_attribute } from '../../../utils/ast.js';
 
 /**
@@ -9,7 +10,7 @@ import { is_event_attribute } from '../../../utils/ast.js';
  * @param {Context} context
  */
 export function SvelteWindow(node, context) {
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		e.incompatible_with_custom_renderer(node, '`<svelte:window>`');
 	}
 
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/Text.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/Text.js
index 410614531a..575fee7816 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/Text.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/Text.js
@@ -4,6 +4,7 @@ import { is_tag_valid_with_parent } from '../../../../html-tree-validation.js';
 import { regex_bidirectional_control_characters, regex_not_whitespace } from '../../patterns.js';
 import * as e from '../../../errors.js';
 import * as w from '../../../warnings.js';
+import { custom_renderer } from '../../../state.js';
 import { extract_svelte_ignore } from '../../../utils/extract_svelte_ignore.js';
 
 /**
@@ -17,7 +18,7 @@ export function Text(node, context) {
 		parent.type === 'Fragment' &&
 		context.state.parent_element &&
 		regex_not_whitespace.test(node.data) &&
-		!context.state.analysis.custom_renderer
+		!custom_renderer
 	) {
 		const message = is_tag_valid_with_parent('#text', context.state.parent_element);
 		if (message) {
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/TransitionDirective.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/TransitionDirective.js
index 01a6229088..3b78997d2f 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/TransitionDirective.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/TransitionDirective.js
@@ -1,6 +1,7 @@
 /** @import { AST } from '#compiler' */
 /** @import { Context } from '../types' */
 import * as e from '../../../errors.js';
+import { custom_renderer } from '../../../state.js';
 
 import { mark_subtree_dynamic } from './shared/fragment.js';
 
@@ -9,7 +10,7 @@ import { mark_subtree_dynamic } from './shared/fragment.js';
  * @param {Context} context
  */
 export function TransitionDirective(node, context) {
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		const directive = node.intro && node.outro ? '`transition:`' : node.intro ? '`in:`' : '`out:`';
 		e.incompatible_with_custom_renderer(node, directive);
 	}
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/shared/element.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/shared/element.js
index 925ea69dfb..959fa97fe9 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/shared/element.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/shared/element.js
@@ -4,6 +4,7 @@ import { get_attribute_expression, is_expression_attribute } from '../../../../u
 import { regex_illegal_attribute_character } from '../../../patterns.js';
 import * as e from '../../../../errors.js';
 import * as w from '../../../../warnings.js';
+import { custom_renderer } from '../../../../state.js';
 import {
 	validate_attribute,
 	validate_attribute_name,
@@ -79,12 +80,12 @@ export function validate_element(node, context) {
 				validate_slot_attribute(context, attribute);
 			}
 
-			if (attribute.name === 'is' && !context.state.analysis.custom_renderer) {
+			if (attribute.name === 'is' && !custom_renderer) {
 				w.attribute_avoid_is(attribute);
 			}
 
 			const correct_name = react_attributes.get(attribute.name);
-			if (correct_name && !context.state.analysis.custom_renderer) {
+			if (correct_name && !custom_renderer) {
 				w.attribute_invalid_property_name(attribute, attribute.name, correct_name);
 			}
 
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/transform-client.js b/packages/svelte/src/compiler/phases/3-transform/client/transform-client.js
index a4f9b9dfce..8ec7002c7d 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/transform-client.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/transform-client.js
@@ -6,7 +6,7 @@ import { walk } from 'zimmerframe';
 import * as b from '#compiler/builders';
 import { build_getter, is_state_source } from './utils.js';
 import { render_stylesheet } from '../css/index.js';
-import { dev, filename } from '../../../state.js';
+import { dev, filename, custom_renderer } from '../../../state.js';
 import { AnimateDirective } from './visitors/AnimateDirective.js';
 import { ArrowFunctionExpression } from './visitors/ArrowFunctionExpression.js';
 import { AssignmentExpression } from './visitors/AssignmentExpression.js';
@@ -138,13 +138,10 @@ const visitors = {
 	VariableDeclaration
 };
 
-/**
- * @param {string | undefined} custom_renderer_module
- */
-function get_imports(custom_renderer_module) {
+function get_imports() {
 	const imports = [b.import_all('$', 'svelte/internal/client')];
-	if (custom_renderer_module) {
-		imports.push(b.imports([['$renderer', '$renderer', true]], custom_renderer_module));
+	if (custom_renderer) {
+		imports.push(b.imports([['$renderer', '$renderer', true]], custom_renderer));
 	}
 	return imports;
 }
@@ -162,7 +159,7 @@ export function client_component(analysis, options) {
 		scope: analysis.module.scope,
 		scopes: analysis.module.scopes,
 		is_instance: false,
-		hoisted: [...get_imports(analysis.custom_renderer), ...analysis.instance_body.hoisted],
+		hoisted: [...get_imports(), ...analysis.instance_body.hoisted],
 		node: /** @type {any} */ (null), // populated by the root node
 		legacy_reactive_imports: [],
 		legacy_reactive_statements: new Map(),
@@ -575,11 +572,11 @@ export function client_component(analysis, options) {
 
 	// disclose version attach the svelte version to `window` which is not guaranteed
 	// to be a thing in custom renderers environments
-	if (options.discloseVersion && !analysis.custom_renderer) {
+	if (options.discloseVersion && !custom_renderer) {
 		body.unshift(b.imports([], 'svelte/internal/disclose-version'));
 	}
 
-	if (!analysis.custom_renderer) {
+	if (!custom_renderer) {
 		body.unshift(b.imports([], 'svelte/internal/init-operations'));
 	}
 
@@ -606,7 +603,7 @@ export function client_component(analysis, options) {
 		component_block.body.unshift(b.const(analysis.props_id, b.call('$.props_id')));
 	}
 
-	if (analysis.custom_renderer) {
+	if (custom_renderer) {
 		component_block.body.unshift(
 			b.var('$$pop_renderer', b.call('$.push_renderer', b.id('$renderer')))
 		);
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/transform-template/index.js b/packages/svelte/src/compiler/phases/3-transform/client/transform-template/index.js
index b81746a0e5..246824a447 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/transform-template/index.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/transform-template/index.js
@@ -2,7 +2,7 @@
 /** @import { ComponentClientTransformState } from '../types.js' */
 /** @import { Node } from './types.js' */
 import { TEMPLATE_USE_MATHML, TEMPLATE_USE_SVG } from '../../../../../constants.js';
-import { dev, locator } from '../../../../state.js';
+import { dev, locator, custom_renderer } from '../../../../state.js';
 import * as b from '../../../../utils/builders.js';
 
 /**
@@ -36,7 +36,7 @@ function build_locations(nodes) {
  */
 export function transform_template(state, namespace, flags = 0) {
 	// custom renderers needs a tree to work because there's no template element we can use
-	const tree = state.options.fragments === 'tree' || !!state.analysis.custom_renderer;
+	const tree = state.options.fragments === 'tree' || custom_renderer;
 
 	const expression = tree ? state.template.as_tree() : state.template.as_html();
 
@@ -51,7 +51,7 @@ export function transform_template(state, namespace, flags = 0) {
 		flags ? b.literal(flags) : undefined
 	);
 
-	if (state.template.contains_script_tag && !state.analysis.custom_renderer) {
+	if (state.template.contains_script_tag && !custom_renderer) {
 		call = b.call(`$.with_script`, call);
 	}
 
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/RegularElement.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/RegularElement.js
index 4dc6e26ffe..c2a306dc3e 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/RegularElement.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/RegularElement.js
@@ -8,7 +8,7 @@ import {
 	is_dom_property,
 	is_load_error_element
 } from '../../../../../utils.js';
-import { is_ignored } from '../../../../state.js';
+import { is_ignored, custom_renderer } from '../../../../state.js';
 import { is_event_attribute, is_text_attribute } from '../../../../utils/ast.js';
 import * as b from '#compiler/builders';
 import {
@@ -39,9 +39,7 @@ import { TEMPLATE_FRAGMENT } from '../../../../../constants.js';
  */
 export function RegularElement(node, context) {
 	const is_html =
-		context.state.metadata.namespace === 'html' &&
-		node.name !== 'svg' &&
-		!context.state.analysis.custom_renderer;
+		context.state.metadata.namespace === 'html' && node.name !== 'svg' && !custom_renderer;
 	const name = is_html ? node.name.toLowerCase() : node.name;
 	context.state.template.push_element(name, node.start, is_html);
 
@@ -51,7 +49,7 @@ export function RegularElement(node, context) {
 	}
 
 	// we never treat elements as custom element in custom renderers, since we don't want to apply special handling to them (e.g. class merging)
-	const is_custom_element = is_custom_element_node(node) && !context.state.analysis.custom_renderer;
+	const is_custom_element = is_custom_element_node(node) && !custom_renderer;
 
 	// cloneNode is faster, but it does not instantiate the underlying class of the
 	// custom element until the template is connected to the dom, which would
@@ -212,7 +210,7 @@ export function RegularElement(node, context) {
 
 	/** If true, needs `__value` for inputs */
 	const needs_special_value_handling =
-		!context.state.analysis.custom_renderer &&
+		!custom_renderer &&
 		(name === 'option' || name === 'select' || bindings.has('group') || bindings.has('checked'));
 
 	if (has_spread) {
@@ -236,7 +234,7 @@ export function RegularElement(node, context) {
 				continue;
 			}
 
-			const name = get_attribute_name(node, attribute, !!context.state.analysis.custom_renderer);
+			const name = get_attribute_name(node, attribute);
 
 			if (
 				!is_custom_element &&
@@ -258,7 +256,7 @@ export function RegularElement(node, context) {
 				if (name !== 'class' || value) {
 					context.state.template.set_prop(attribute.name, value === true ? '' : value);
 				}
-			} else if (name === 'autofocus' && !context.state.analysis.custom_renderer) {
+			} else if (name === 'autofocus' && !custom_renderer) {
 				let { value } = build_attribute_value(attribute.value, context);
 				context.state.init.push(b.stmt(b.call('$.autofocus', node_id, value)));
 			} else if (name === 'class') {
@@ -274,14 +272,7 @@ export function RegularElement(node, context) {
 					(value, metadata) => context.state.memoizer.add(value, metadata)
 				);
 
-				const update = build_element_attribute_update(
-					node,
-					node_id,
-					name,
-					value,
-					attributes,
-					!!context.state.analysis.custom_renderer
-				);
+				const update = build_element_attribute_update(node, node_id, name, value, attributes);
 
 				(has_state ? context.state.update : context.state.init).push(b.stmt(update));
 			}
@@ -357,7 +348,7 @@ export function RegularElement(node, context) {
 		const empty_string = value.type === 'Literal' && value.value === '';
 
 		if (!empty_string) {
-			if (context.state.analysis.custom_renderer) {
+			if (custom_renderer) {
 				// custom renderers need to use the method to invoke the renderer
 				context.state.template.push_text([
 					{
@@ -377,7 +368,7 @@ export function RegularElement(node, context) {
 				);
 			}
 		}
-	} else if (is_customizable_select_element(node) && !context.state.analysis.custom_renderer) {
+	} else if (is_customizable_select_element(node) && !custom_renderer) {
 		// For <option>, <optgroup>, or <select> elements with rich content, we need to branch based on browser support.
 		// Modern browsers preserve rich HTML in options, older browsers strip it to text only.
 		// We create a separate template for the rich content and append it to the element.
@@ -439,7 +430,7 @@ export function RegularElement(node, context) {
 
 		// The same applies if it's a `<template>` element, since we need to
 		// set the value of `hydrate_node` to `node.content`
-		if (name === 'template' && !context.state.analysis.custom_renderer) {
+		if (name === 'template' && !custom_renderer) {
 			needs_reset = true;
 			child_state.init.push(b.stmt(b.call('$.hydrate_template', arg)));
 			arg = b.member(arg, 'content');
@@ -476,7 +467,7 @@ export function RegularElement(node, context) {
 		context.state.after_update.push(...element_state.after_update);
 	}
 
-	if (name === 'selectedcontent' && !context.state.analysis.custom_renderer) {
+	if (name === 'selectedcontent' && !custom_renderer) {
 		context.state.init.push(
 			b.stmt(
 				b.call(
@@ -608,14 +599,7 @@ export function build_style_directives_object(
  * @param {Expression} value
  * @param {Array<AST.Attribute | AST.SpreadAttribute>} attributes
  */
-function build_element_attribute_update(
-	element,
-	node_id,
-	name,
-	value,
-	attributes,
-	custom_renderer = false
-) {
+function build_element_attribute_update(element, node_id, name, value, attributes) {
 	if (name === 'muted' && !custom_renderer) {
 		// Special case for Firefox who needs it set as a property in order to work
 		return b.assignment('=', b.member(node_id, b.id('muted')), value);
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/RenderTag.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/RenderTag.js
index dfe7349794..3283b03379 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/RenderTag.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/RenderTag.js
@@ -2,6 +2,7 @@
 /** @import { AST } from '#compiler' */
 /** @import { ComponentContext } from '../types' */
 import { unwrap_optional } from '../../../../utils/ast.js';
+import { custom_renderer } from '../../../../state.js';
 import * as b from '#compiler/builders';
 import { add_svelte_meta, build_expression, Memoizer } from './shared/utils.js';
 
@@ -46,7 +47,7 @@ export function RenderTag(node, context) {
 	if (node.metadata.dynamic) {
 		// In custom renderer components, validate that the snippet is compatible
 		// with the current renderer before rendering it
-		if (context.state.analysis.custom_renderer) {
+		if (custom_renderer) {
 			snippet_function = b.call('$.validate_snippet_renderer', b.id('$renderer'), snippet_function);
 		}
 
@@ -65,7 +66,7 @@ export function RenderTag(node, context) {
 	} else {
 		// In custom renderer components, validate that the snippet is compatible
 		// with the current renderer before rendering it
-		if (context.state.analysis.custom_renderer) {
+		if (custom_renderer) {
 			snippet_function = b.call('$.validate_snippet_renderer', b.id('$renderer'), snippet_function);
 		}
 
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/SnippetBlock.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/SnippetBlock.js
index ff11826aec..dc82192561 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/SnippetBlock.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/SnippetBlock.js
@@ -1,7 +1,7 @@
 /** @import { AssignmentPattern, BlockStatement, Expression, Identifier, Statement } from 'estree' */
 /** @import { AST } from '#compiler' */
 /** @import { ComponentContext } from '../types' */
-import { dev } from '../../../../state.js';
+import { dev, custom_renderer } from '../../../../state.js';
 import { extract_paths } from '../../../../utils/ast.js';
 import * as b from '#compiler/builders';
 import { get_value } from './shared/declarations.js';
@@ -81,7 +81,7 @@ export function SnippetBlock(node, context) {
 
 	// wrap snippets in components with a custom renderer so they can only be
 	// rendered by the same renderer that compiled them
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		snippet = b.call('$.renderer_snippet', b.id('$renderer'), snippet);
 	}
 
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/component.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/component.js
index 1f732fb9f7..a354408686 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/component.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/component.js
@@ -1,7 +1,7 @@
 /** @import { BlockStatement, Expression, ExpressionStatement, Identifier, MemberExpression, Pattern, Property, SequenceExpression, SourceLocation, Statement } from 'estree' */
 /** @import { AST } from '#compiler' */
 /** @import { ComponentContext } from '../../types.js' */
-import { dev, is_ignored } from '../../../../../state.js';
+import { dev, is_ignored, custom_renderer } from '../../../../../state.js';
 import { get_attribute_chunks, object } from '../../../../../utils/ast.js';
 import * as b from '#compiler/builders';
 import { add_svelte_meta, build_bind_this, Memoizer, validate_binding } from '../shared/utils.js';
@@ -456,7 +456,7 @@ export function build_component(node, component_name, loc, context) {
 		};
 	}
 
-	if (context.state.analysis.custom_renderer) {
+	if (custom_renderer) {
 		const prev = fn;
 		fn = (node_id) => {
 			return b.call('$.without_renderer', b.arrow([], prev(node_id)));
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/element.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/element.js
index d2d14d7da1..063f8b0231 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/element.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/element.js
@@ -3,7 +3,7 @@
 /** @import { ComponentContext } from '../../types' */
 import { escape_html } from '../../../../../../escaping.js';
 import { normalize_attribute } from '../../../../../../utils.js';
-import { is_ignored } from '../../../../../state.js';
+import { is_ignored, custom_renderer } from '../../../../../state.js';
 import { is_event_attribute } from '../../../../../utils/ast.js';
 import * as b from '#compiler/builders';
 import { build_class_directives_object, build_style_directives_object } from '../RegularElement.js';
@@ -132,9 +132,8 @@ export function build_attribute_value(value, context, memoize = (value) => value
 /**
  * @param {AST.RegularElement | AST.SvelteElement} element
  * @param {AST.Attribute} attribute
- * @param {boolean} [custom_renderer]
  */
-export function get_attribute_name(element, attribute, custom_renderer) {
+export function get_attribute_name(element, attribute) {
 	if (!custom_renderer && !element.metadata.svg && !element.metadata.mathml) {
 		return normalize_attribute(attribute.name);
 	}
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/fragment.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/fragment.js
index b03095d943..c57d10bd35 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/fragment.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/fragment.js
@@ -2,6 +2,7 @@
 /** @import { AST } from '#compiler' */
 /** @import { ComponentContext } from '../../types' */
 import { cannot_be_set_statically } from '../../../../../../utils.js';
+import { custom_renderer } from '../../../../../state.js';
 import { is_event_attribute, is_text_attribute } from '../../../../../utils/ast.js';
 import * as b from '#compiler/builders';
 import { is_custom_element_node } from '../../../../nodes.js';
@@ -83,7 +84,7 @@ export function process_children(nodes, initial, is_element, context) {
 		if (has_state && !within_bound_contenteditable) {
 			context.state.update.push(update);
 		} else {
-			if (context.state.analysis.custom_renderer) {
+			if (custom_renderer) {
 				// custom renderers need to use the method to invoke the renderer
 				context.state.init.push(update);
 			} else {
diff --git a/packages/svelte/src/compiler/phases/3-transform/server/visitors/RegularElement.js b/packages/svelte/src/compiler/phases/3-transform/server/visitors/RegularElement.js
index 963acc1ca5..6b4db1e819 100644
--- a/packages/svelte/src/compiler/phases/3-transform/server/visitors/RegularElement.js
+++ b/packages/svelte/src/compiler/phases/3-transform/server/visitors/RegularElement.js
@@ -3,7 +3,7 @@
 /** @import { ComponentContext, ComponentServerTransformState } from '../types.js' */
 /** @import { Scope } from '../../../scope.js' */
 import { is_void } from '../../../../../utils.js';
-import { dev, locator } from '../../../../state.js';
+import { dev, locator, custom_renderer } from '../../../../state.js';
 import * as b from '#compiler/builders';
 import { clean_nodes, determine_namespace_for_children } from '../../utils.js';
 import { build_element_attributes, prepare_element_spread_object } from './shared/element.js';
@@ -110,7 +110,7 @@ export function RegularElement(node, context) {
 
 		const [attributes, ...rest] = prepare_element_spread_object(node, context, optimiser.transform);
 
-		if (is_customizable_select_element(node) && !context.state.analysis.custom_renderer) {
+		if (is_customizable_select_element(node) && !custom_renderer) {
 			rest.push(b.true);
 		}
 
@@ -157,7 +157,7 @@ export function RegularElement(node, context) {
 
 		const [attributes, ...rest] = prepare_element_spread_object(node, context, optimiser.transform);
 
-		if (is_customizable_select_element(node) && !context.state.analysis.custom_renderer) {
+		if (is_customizable_select_element(node) && !custom_renderer) {
 			rest.push(b.true);
 		}
 
@@ -195,7 +195,7 @@ export function RegularElement(node, context) {
 		if (
 			(name === 'optgroup' || name === 'select') &&
 			is_customizable_select_element(node) &&
-			!context.state.analysis.custom_renderer
+			!custom_renderer
 		) {
 			state.template.push(b.literal('<!>'));
 		}
diff --git a/packages/svelte/src/compiler/phases/types.d.ts b/packages/svelte/src/compiler/phases/types.d.ts
index 54c90ff949..a1a85ce145 100644
--- a/packages/svelte/src/compiler/phases/types.d.ts
+++ b/packages/svelte/src/compiler/phases/types.d.ts
@@ -100,10 +100,6 @@ export interface ComponentAnalysis extends Analysis {
 	 * or if not present a boolean which corresponds to the compiler option value
 	 */
 	custom_element: boolean | AST.SvelteOptions['customElement'];
-	/**
-	 * The resolved custom renderer module path, or undefined if not using a custom renderer
-	 */
-	custom_renderer: string | undefined;
 	/** If `true`, should append styles through JavaScript */
 	inject_styles: boolean;
 	reactive_statements: Map<LabeledStatement, ReactiveStatement>;
diff --git a/packages/svelte/src/compiler/state.js b/packages/svelte/src/compiler/state.js
index 5ae001ec50..094c53473b 100644
--- a/packages/svelte/src/compiler/state.js
+++ b/packages/svelte/src/compiler/state.js
@@ -46,6 +46,9 @@ export let dev;
 
 export let runes = false;
 
+/** @type {string | null | undefined} */
+export let custom_renderer = null;
+
 /** @type {(index: number) => Location} */
 export let locator;
 
@@ -139,6 +142,7 @@ export function is_ignored(node, code) {
 export function reset(state) {
 	dev = false;
 	runes = false;
+	custom_renderer = null;
 	component_name = UNKNOWN_FILENAME;
 	source = '';
 	source_lines = [];
@@ -155,6 +159,7 @@ export function reset(state) {
  *   component_name?: string;
  *   rootDir?: string;
  *   runes: boolean;
+ *   custom_renderer?: string | null | undefined;
  * }} state
  */
 export function adjust(state) {
@@ -162,6 +167,7 @@ export function adjust(state) {
 
 	dev = state.dev;
 	runes = state.runes;
+	custom_renderer = state.custom_renderer;
 	component_name = state.component_name ?? UNKNOWN_FILENAME;
 
 	if (typeof root_dir === 'string' && filename.startsWith(root_dir)) {