refactor: tidy up compile/render_dom

src/compiler/compile/render_dom/wrappers/Element/index.ts

@@ -221,10 +221,8 @@ export default class ElementWrapper extends Wrapper {
 
 		this.event_handlers = this.node.handlers.map(event_handler => new EventHandler(event_handler, this));
 
-		if (node.intro || node.outro) {
 		if (node.intro) block.add_intro(node.intro.is_local);
 		if (node.outro) block.add_outro(node.outro.is_local);
-		}
 
 		if (node.animation) {
 			block.add_animation();
@@ -326,8 +324,7 @@ export default class ElementWrapper extends Wrapper {
 					${this.var}.p(#ctx, #dirty);
 				}
 			} else if (${previous_tag}) {
-				${
+				${has_transitions
-					has_transitions
 				? b`
 							@group_outros();
 							@transition_out(${this.var}, 1, 1, () => {

src/compiler/compile/render_dom/wrappers/shared/is_dynamic.ts

@@ -2,11 +2,8 @@ import { Var } from '../../../../interfaces';
 import { is_reserved_keyword } from '../../../utils/reserved_keywords';
 
 export default function is_dynamic(variable: Var) {
-	if (variable) {
+	if (!variable) return false;
 	if (variable.mutated || variable.reassigned) return true; // dynamic internal state
 	if (!variable.module && variable.writable && variable.export_name) return true; // writable props
 	if (is_reserved_keyword(variable.name)) return true;
-	}
-
-	return false;
 }