one down

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

@@ -261,10 +261,10 @@ export function build_component(node, component_name, context, anchor = context.
 			let expression = /** @type {Expression} */ (context.visit(attribute.expression));
 
 			if (attribute.metadata.expression.has_state) {
-				expression = b.arrow([b.id('$$node')], b.call(expression, b.id('$$node')));
+				push_prop(b.get(b.call('$.attachment'), [b.return(expression)], true));
+			} else {
+				push_prop(b.prop('init', b.call('$.attachment'), expression, true));
 			}
-
-			push_prop(b.prop('get', b.call('$.attachment'), expression, true));
 		}
 	}
 

packages/svelte/src/compiler/utils/builders.js

@@ -231,12 +231,18 @@ export function function_declaration(id, params, body) {
 }
 
 /**
- * @param {string} name
+ * @param {ESTree.Expression | string} name
  * @param {ESTree.Statement[]} body
+ * @param {boolean} computed
  * @returns {ESTree.Property & { value: ESTree.FunctionExpression}}}
  */
-export function get(name, body) {
+export function get(name, body, computed = false) {
-	return prop('get', key(name), function_builder(null, [], block(body)));
+	return prop(
+		'get',
+		typeof name === 'string' ? key(name) : name,
+		function_builder(null, [], block(body)),
+		computed
+	);
 }
 
 /**