diff --git a/packages/svelte/messages/compile-errors/slots.md b/packages/svelte/messages/compile-errors/slots.md
index 17ad8c0636..51213c5b5d 100644
--- a/packages/svelte/messages/compile-errors/slots.md
+++ b/packages/svelte/messages/compile-errors/slots.md
@@ -1,15 +1,18 @@
 ## invalid_slot_element_attribute
 
-<slot> can only receive attributes and (optionally) let directives
+`<slot>` can only receive attributes and (optionally) let directives
 
 ## invalid_slot_attribute
 
 slot attribute must be a static value
 
+## invalid_slot_name_default
+
+`default` is a reserved word — it cannot be used as a slot name
+
 ## invalid_slot_name
 
-default is a reserved word — it cannot be used as a slot name`
-			: `slot attribute must be a static value
+slot attribute must be a static value
 
 ## invalid_slot_placement
 
@@ -25,4 +28,4 @@ Found default slot content alongside an explicit slot="default"
 
 ## conflicting_children_snippet
 
-Cannot use explicit children snippet at the same time as implicit children content. Remove either the non-whitespace content or the children snippet block
\ No newline at end of file
+Cannot use explicit children snippet at the same time as implicit children content. Remove either the non-whitespace content or the children snippet block
diff --git a/packages/svelte/src/compiler/errors-tmp.js b/packages/svelte/src/compiler/errors-tmp.js
index 00f16c3be5..d8a3c3f0fc 100644
--- a/packages/svelte/src/compiler/errors-tmp.js
+++ b/packages/svelte/src/compiler/errors-tmp.js
@@ -20,76 +20,6 @@ const internal = {
 		`Internal compiler error: ${message}. Please report this to https://github.com/sveltejs/svelte/issues`
 };
 
-/** @satisfies {Errors} */
-const attributes = {
-	'empty-attribute-shorthand': () => `Attribute shorthand cannot be empty`,
-	'duplicate-attribute': () => `Attributes need to be unique`,
-	'invalid-event-attribute-value': () =>
-		`Event attribute must be a JavaScript expression, not a string`,
-	/** @param {string} name */
-	'invalid-attribute-name': (name) => `'${name}' is not a valid attribute name`,
-	/** @param {'no-each' | 'each-key' | 'child'} type */
-	'invalid-animation': (type) =>
-		type === 'no-each'
-			? `An element that uses the animate directive must be the immediate child of a keyed each block`
-			: type === 'each-key'
-				? `An element that uses the animate directive must be used inside a keyed each block. Did you forget to add a key to your each block?`
-				: `An element that uses the animate directive must be the sole child of a keyed each block`,
-	'duplicate-animation': () => `An element can only have one 'animate' directive`,
-	/** @param {string[] | undefined} [modifiers] */
-	'invalid-event-modifier': (modifiers) =>
-		modifiers
-			? `Valid event modifiers are ${modifiers.slice(0, -1).join(', ')} or ${modifiers.slice(-1)}`
-			: `Event modifiers other than 'once' can only be used on DOM elements`,
-	/**
-	 * @param {string} modifier1
-	 * @param {string} modifier2
-	 */
-	'invalid-event-modifier-combination': (modifier1, modifier2) =>
-		`The '${modifier1}' and '${modifier2}' modifiers cannot be used together`,
-	/**
-	 * @param {string} directive1
-	 * @param {string} directive2
-	 */
-	'duplicate-transition': (directive1, directive2) => {
-		/** @param {string} _directive */
-		function describe(_directive) {
-			return _directive === 'transition' ? "a 'transition'" : `an '${_directive}'`;
-		}
-
-		return directive1 === directive2
-			? `An element can only have one '${directive1}' directive`
-			: `An element cannot have both ${describe(directive1)} directive and ${describe(
-					directive2
-				)} directive`;
-	},
-	'invalid-let-directive-placement': () => 'let directive at invalid position',
-	'invalid-style-directive-modifier': () =>
-		`Invalid 'style:' modifier. Valid modifiers are: 'important'`,
-	'invalid-sequence-expression': () =>
-		`Sequence expressions are not allowed as attribute/directive values in runes mode, unless wrapped in parentheses`
-};
-
-/** @satisfies {Errors} */
-const slots = {
-	'invalid-slot-element-attribute': () =>
-		`<slot> can only receive attributes and (optionally) let directives`,
-	'invalid-slot-attribute': () => `slot attribute must be a static value`,
-	/** @param {boolean} is_default */
-	'invalid-slot-name': (is_default) =>
-		is_default
-			? `default is a reserved word — it cannot be used as a slot name`
-			: `slot attribute must be a static value`,
-	'invalid-slot-placement': () =>
-		`Element with a slot='...' attribute must be a child of a component or a descendant of a custom element`,
-	/** @param {string} name @param {string} component */
-	'duplicate-slot-name': (name, component) => `Duplicate slot name '${name}' in <${component}>`,
-	'invalid-default-slot-content': () =>
-		`Found default slot content alongside an explicit slot="default"`,
-	'conflicting-children-snippet': () =>
-		`Cannot use explicit children snippet at the same time as implicit children content. Remove either the non-whitespace content or the children snippet block`
-};
-
 /** @satisfies {Errors} */
 const bindings = {
 	'invalid-binding-expression': () => `Can only bind to an Identifier or MemberExpression`,
@@ -149,7 +79,6 @@ const const_tag = {
 /** @satisfies {Errors} */
 const errors = {
 	...internal,
-	...slots,
 	...bindings,
 	...variables,
 	...compiler_options,
diff --git a/packages/svelte/src/compiler/errors.js b/packages/svelte/src/compiler/errors.js
index eb66c3fc9c..27ea175e59 100644
--- a/packages/svelte/src/compiler/errors.js
+++ b/packages/svelte/src/compiler/errors.js
@@ -1052,7 +1052,7 @@ export function conflicting_property_name(node) {
  * @returns {never}
  */
 export function invalid_slot_element_attribute(node) {
-	e(node, "invalid_slot_element_attribute", "<slot> can only receive attributes and (optionally) let directives");
+	e(node, "invalid_slot_element_attribute", "`<slot>` can only receive attributes and (optionally) let directives");
 }
 
 /**
@@ -1064,13 +1064,22 @@ export function invalid_slot_attribute(node) {
 	e(node, "invalid_slot_attribute", "slot attribute must be a static value");
 }
 
+/**
+ * @param {number | NodeLike} node
+
+ * @returns {never}
+ */
+export function invalid_slot_name_default(node) {
+	e(node, "invalid_slot_name_default", "`default` is a reserved word — it cannot be used as a slot name");
+}
+
 /**
  * @param {number | NodeLike} node
 
  * @returns {never}
  */
 export function invalid_slot_name(node) {
-	e(node, "invalid_slot_name", "default is a reserved word — it cannot be used as a slot name`\n\t\t\t: `slot attribute must be a static value");
+	e(node, "invalid_slot_name", "slot attribute must be a static value");
 }
 
 /**
diff --git a/packages/svelte/src/compiler/phases/2-analyze/validation.js b/packages/svelte/src/compiler/phases/2-analyze/validation.js
index 2eaaf7b262..d71a727e47 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/validation.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/validation.js
@@ -261,7 +261,7 @@ function validate_slot_attribute(context, attribute) {
 
 	if (owner) {
 		if (!is_text_attribute(attribute)) {
-			error(attribute, 'invalid-slot-attribute');
+			e.invalid_slot_attribute(attribute);
 		}
 
 		if (
@@ -270,13 +270,13 @@ function validate_slot_attribute(context, attribute) {
 			owner.type === 'SvelteSelf'
 		) {
 			if (owner !== context.path.at(-2)) {
-				error(attribute, 'invalid-slot-placement');
+				e.invalid_slot_placement(attribute);
 			}
 
 			const name = attribute.value[0].data;
 
 			if (context.state.component_slots.has(name)) {
-				error(attribute, 'duplicate-slot-name', name, owner.name);
+				e.duplicate_slot_name(attribute, name, owner.name);
 			}
 
 			context.state.component_slots.add(name);
@@ -293,12 +293,12 @@ function validate_slot_attribute(context, attribute) {
 						}
 					}
 
-					error(node, 'invalid-default-slot-content');
+					e.invalid_default_slot_content(node);
 				}
 			}
 		}
 	} else {
-		error(attribute, 'invalid-slot-placement');
+		e.invalid_slot_placement(attribute);
 	}
 }
 
@@ -668,7 +668,7 @@ const validation = {
 					(node) => node.type !== 'SnippetBlock' && (node.type !== 'Text' || node.data.trim())
 				)
 			) {
-				error(node, 'conflicting-children-snippet');
+				e.conflicting_children_snippet(node);
 			}
 		}
 	},
@@ -711,15 +711,15 @@ const validation = {
 			if (attribute.type === 'Attribute') {
 				if (attribute.name === 'name') {
 					if (!is_text_attribute(attribute)) {
-						error(attribute, 'invalid-slot-name', false);
+						e.invalid_slot_name(attribute);
 					}
 					const slot_name = attribute.value[0].data;
 					if (slot_name === 'default') {
-						error(attribute, 'invalid-slot-name', true);
+						e.invalid_slot_name_default(attribute);
 					}
 				}
 			} else if (attribute.type !== 'SpreadAttribute' && attribute.type !== 'LetDirective') {
-				error(attribute, 'invalid-slot-element-attribute');
+				e.invalid_slot_element_attribute(attribute);
 			}
 		}
 	},