tighten up a bit more

src/generators/dom/visitors/EachBlock.ts

@@ -160,7 +160,7 @@ function keyed(
 	const last = block.getUniqueName(`${each_block}_last`);
 	const expected = block.getUniqueName(`${each_block}_expected`);
 
-	block.addVariable(lookup, `Object.create(null)`);
+	block.addVariable(lookup, `@blankObject()`);
 	block.addVariable(head);
 	block.addVariable(last);
 

src/shared/index.js

@@ -4,6 +4,10 @@ export * from './dom.js';
 export * from './transitions.js';
 export * from './utils.js';
 
+export function blankObject() {
+	return Object.create(null);
+}
+
 export function destroy(detach) {
 	this.destroy = noop;
 	this.fire('destroy');
@@ -63,13 +67,8 @@ export function get(key) {
 export function init(component, options) {
 	component.options = options;
 
-	component._observers = {
+	component._observers = { pre: blankObject(), post: blankObject() };
-		pre: Object.create(null),
+	component._handlers = blankObject();
-		post: Object.create(null)
-	};
-
-	component._handlers = Object.create(null);
-
 	component._root = options._root || component;
 	component._yield = options._yield;
 	component._bind = options._bind;