simplified syntax for

src/runtime/internal/Component.ts

@@ -129,27 +129,19 @@ export function init(component, options, instance, create_fragment, not_equal, p
 	$$.ctx = instance
 		? instance(component, prop_values, (args) => {
 			let { i, ret, value } = args;
-			const isValuePassed = !!Object.keys(args).find(e => e === 'value');
 
-			const assign = () => {
+			if ($$.ctx) {
+				const isValuePassed = !!Object.keys(args).find(e => e === 'value');
+
+				value = isValuePassed ? value : (value || ret);
+
 				if (not_equal($$.ctx[i], ($$.ctx[i] = value))) {
 					if ($$.bound[i]) $$.bound[i](value);
 					if (ready) make_dirty(component, i);
 				}
-			};
-
-			if ($$.ctx) {
-				if (!isValuePassed && typeof $$.ctx[i] === 'undefined') {
-					assign();
-					return ret;
-				}
-
-				value = isValuePassed ? value : (value || ret);
-				assign();
 			}
 
 			return ret;
-
 		})
 		: [];