tweak

src/generators/dom/index.ts

@@ -232,9 +232,9 @@ export default function dom(
 
 		${hasInitHooks && deindent`
 			this.root._oncreate.push(() => {
-				${templateProperties.onstate && `%onstate.call(this, { changed: @makePropertyMap(this._state), current: this._state });`}
+				${templateProperties.onstate && `%onstate.call(this, { changed: @assignTrue({}, this._state), current: this._state });`}
 				${templateProperties.oncreate && `%oncreate.call(this);`}
-				this.fire("update", { changed: @makePropertyMap(this._state), current: this._state });
+				this.fire("update", { changed: @assignTrue({}, this._state), current: this._state });
 			});
 		`}
 

src/shared/utils.js

@@ -5,10 +5,7 @@ export function assign(tar, src) {
 	return tar;
 }
 
-export function makePropertyMap(obj) {
-	const map = {};
-	for (const key in obj) {
-		map[key] = 1;
-	}
-	return map;
+export function assignTrue(tar, src) {
+	for (var k in src) tar[k] = 1;
+	return tar;
 }

test/js/samples/deconflict-globals/expected-bundle.js

@@ -5,12 +5,9 @@ function assign(tar, src) {
 	return tar;
 }
 
-function makePropertyMap(obj) {
-	const map = {};
-	for (const key in obj) {
-		map[key] = 1;
-	}
-	return map;
+function assignTrue(tar, src) {
+	for (var k in src) tar[k] = 1;
+	return tar;
 }
 
 function blankObject() {
@@ -166,7 +163,7 @@ function SvelteComponent(options) {
 
 	this.root._oncreate.push(() => {
 		oncreate.call(this);
-		this.fire("update", { changed: makePropertyMap(this._state), current: this._state });
+		this.fire("update", { changed: assignTrue({}, this._state), current: this._state });
 	});
 
 	if (options.target) {

test/js/samples/deconflict-globals/expected.js

@@ -1,5 +1,5 @@
 /* generated by Svelte vX.Y.Z */
-import { assign, callAll, init, makePropertyMap, noop, proto } from "svelte/shared.js";
+import { assign, assignTrue, callAll, init, noop, proto } from "svelte/shared.js";
 
 function data_1() {
 	return {
@@ -38,7 +38,7 @@ function SvelteComponent(options) {
 
 	this.root._oncreate.push(() => {
 		oncreate.call(this);
-		this.fire("update", { changed: makePropertyMap(this._state), current: this._state });
+		this.fire("update", { changed: assignTrue({}, this._state), current: this._state });
 	});
 
 	if (options.target) {