move <svelte:head> code

packages/svelte/src/internal/client/block.js

@@ -28,22 +28,6 @@ export function create_root_block(intro) {
 	};
 }
 
-/** @returns {import('./types.js').HeadBlock} */
-export function create_head_block() {
-	return {
-		// dom
-		d: null,
-		// effect
-		e: null,
-		// parent
-		p: /** @type {import('./types.js').Block} */ (current_block),
-		// transition
-		r: null,
-		// type
-		t: HEAD_BLOCK
-	};
-}
-
 /** @returns {import('./types.js').SnippetBlock} */
 export function create_snippet_block() {
 	return {

packages/svelte/src/internal/client/dom/blocks/svelte-head.js

@@ -0,0 +1,76 @@
+import { HEAD_BLOCK } from '../../constants.js';
+import {
+	current_hydration_fragment,
+	get_hydration_fragment,
+	hydrating,
+	set_current_hydration_fragment
+} from '../../hydration.js';
+import { empty } from '../../operations.js';
+import { render_effect } from '../../reactivity/effects.js';
+import { remove } from '../../reconciler.js';
+import { current_block } from '../../runtime.js';
+
+/**
+ * @param {(anchor: Node | null) => void} render_fn
+ * @returns {void}
+ */
+export function head(render_fn) {
+	/** @type {import('#client').HeadBlock} */
+	const block = {
+		// dom
+		d: null,
+		// effect
+		e: null,
+		// parent
+		p: /** @type {import('#client').Block} */ (current_block),
+		// transition
+		r: null,
+		// type
+		t: HEAD_BLOCK
+	};
+
+	// The head function may be called after the first hydration pass and ssr comment nodes may still be present,
+	// therefore we need to skip that when we detect that we're not in hydration mode.
+	let hydration_fragment = null;
+	let previous_hydration_fragment = null;
+
+	let is_hydrating = hydrating;
+	if (is_hydrating) {
+		hydration_fragment = get_hydration_fragment(document.head.firstChild);
+		previous_hydration_fragment = current_hydration_fragment;
+		set_current_hydration_fragment(hydration_fragment);
+	}
+
+	try {
+		const head_effect = render_effect(
+			() => {
+				const current = block.d;
+				if (current !== null) {
+					remove(current);
+					block.d = null;
+				}
+				let anchor = null;
+				if (!hydrating) {
+					anchor = empty();
+					document.head.appendChild(anchor);
+				}
+				render_fn(anchor);
+			},
+			block,
+			false
+		);
+
+		head_effect.ondestroy = () => {
+			const current = block.d;
+			if (current !== null) {
+				remove(current);
+			}
+		};
+
+		block.e = head_effect;
+	} finally {
+		if (is_hydrating) {
+			set_current_hydration_fragment(previous_hydration_fragment);
+		}
+	}
+}

packages/svelte/src/internal/client/render.js

@@ -10,7 +10,7 @@ import {
 	map_set,
 	set_class_name
 } from './operations.js';
-import { create_root_block, create_head_block, create_snippet_block } from './block.js';
+import { create_root_block, create_snippet_block } from './block.js';
 import {
 	PassiveDelegatedEvents,
 	DelegatedEvents,
@@ -1511,55 +1511,6 @@ export function slot(anchor_node, slot_fn, slot_props, fallback_fn) {
 	}
 }
 
-/**
- * @param {(anchor: Node | null) => void} render_fn
- * @returns {void}
- */
-export function head(render_fn) {
-	const block = create_head_block();
-	// The head function may be called after the first hydration pass and ssr comment nodes may still be present,
-	// therefore we need to skip that when we detect that we're not in hydration mode.
-	let hydration_fragment = null;
-	let previous_hydration_fragment = null;
-	let is_hydrating = hydrating;
-	if (is_hydrating) {
-		hydration_fragment = get_hydration_fragment(document.head.firstChild);
-		previous_hydration_fragment = current_hydration_fragment;
-		set_current_hydration_fragment(hydration_fragment);
-	}
-
-	try {
-		const head_effect = render_effect(
-			() => {
-				const current = block.d;
-				if (current !== null) {
-					remove(current);
-					block.d = null;
-				}
-				let anchor = null;
-				if (!hydrating) {
-					anchor = empty();
-					document.head.appendChild(anchor);
-				}
-				render_fn(anchor);
-			},
-			block,
-			false
-		);
-		head_effect.ondestroy = () => {
-			const current = block.d;
-			if (current !== null) {
-				remove(current);
-			}
-		};
-		block.e = head_effect;
-	} finally {
-		if (is_hydrating) {
-			set_current_hydration_fragment(previous_hydration_fragment);
-		}
-	}
-}
-
 /**
  * @param {Element | Text | Comment} anchor
  * @param {boolean} is_html

packages/svelte/src/internal/index.js

@@ -27,6 +27,7 @@ export { key_block as key } from './client/dom/blocks/key.js';
 export * from './client/dom/blocks/each.js';
 export * from './client/dom/blocks/svelte-component.js';
 export * from './client/dom/blocks/svelte-element.js';
+export * from './client/dom/blocks/svelte-head.js';
 export * from './client/reactivity/deriveds.js';
 export * from './client/reactivity/effects.js';
 export * from './client/reactivity/sources.js';