tweak

Author: Rich-Harris

packages/svelte/src/internal/client/dom/elements/attributes.js

@@ -358,16 +358,15 @@ export function set_attributes(
 
 			if (value == null && !is_custom_element && !is_default_value_or_checked) {
 				attributes[key] = null;
-				// if we remove the value/checked attributes this also for some reasons reset
-				// the default value so we need to keep track of it and reassign it after the remove
-				let default_value_reset = /**@type {HTMLInputElement}*/ (element).defaultValue;
-				let default_checked_reset = /**@type {HTMLInputElement}*/ (element).defaultChecked;
+
+				// resetting value/checked also resets defaultValue/defaultChecked — preserve it
+				const prop = name === 'value' ? 'defaultValue' : 'defaultChecked';
+				const prev = /** @type {HTMLInputElement} */ (element)[prop];
+
 				element.removeAttribute(key);
-				if (key === 'value') {
-					/**@type {HTMLInputElement}*/ (element).defaultValue = default_value_reset;
-				} else if (key === 'checked') {
-					/**@type {HTMLInputElement}*/ (element).defaultChecked = default_checked_reset;
-				}
+
+				// @ts-expect-error
+				element[prop] = prev;
 			} else if (
 				is_default_value_or_checked ||
 				(setters.includes(name) && (is_custom_element || typeof value !== 'string'))