From f0a404a07cb07875f354e103db0d84d38fe2879d Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Sat, 16 Sep 2017 15:15:23 -0400
Subject: [PATCH] tighten up a bit more

---
 src/generators/dom/visitors/EachBlock.ts |  2 +-
 src/shared/index.js                      | 13 ++++++-------
 2 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/src/generators/dom/visitors/EachBlock.ts b/src/generators/dom/visitors/EachBlock.ts
index e0d941511e..03c0918ce0 100644
--- a/src/generators/dom/visitors/EachBlock.ts
+++ b/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);
 
diff --git a/src/shared/index.js b/src/shared/index.js
index 001babe349..dcc2895831 100644
--- a/src/shared/index.js
+++ b/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 = {
-		pre: Object.create(null),
-		post: Object.create(null)
-	};
-
-	component._handlers = Object.create(null);
-
+	component._observers = { pre: blankObject(), post: blankObject() };
+	component._handlers = blankObject();
 	component._root = options._root || component;
 	component._yield = options._yield;
 	component._bind = options._bind;