finish inlining $$invalidate

src/compiler/compile/render_dom/index.ts

@@ -208,7 +208,7 @@ export default function dom(
 		component.rewrite_props(({ name, reassigned }) => {
 			const value = `$${name}`;
 
-			const callback = `$value => { ${value} = $$value; $$invalidate('${value}', ${value}) }`;
+			const callback = `$value => $$invalidate('${value}', ${value} = $$value)`;
 
 			if (reassigned) {
 				return `$$subscribe_${name}()`;
@@ -290,7 +290,7 @@ export default function dom(
 		})
 		.map(({ name }) => deindent`
 			${component.compile_options.dev && `@validate_store(${name.slice(1)}, '${name.slice(1)}');`}
-			@component_subscribe($$self, ${name.slice(1)}, $$value => { ${name} = $$value; $$invalidate('${name}', ${name}); });
+			@component_subscribe($$self, ${name.slice(1)}, $$value => $$invalidate('${name}', ${name} = $$value));
 		`);
 
 	const resubscribable_reactive_store_unsubscribers = reactive_stores
@@ -337,7 +337,7 @@ export default function dom(
 
 			const store = component.var_lookup.get(name);
 			if (store && store.reassigned) {
-				return `${$name}, $$unsubscribe_${name} = @noop, $$subscribe_${name} = () => ($$unsubscribe_${name}(), $$unsubscribe_${name} = @subscribe(${name}, $$value => { ${$name} = $$value; $$invalidate('${$name}', ${$name}); }), ${name})`;
+				return `${$name}, $$unsubscribe_${name} = @noop, $$subscribe_${name} = () => ($$unsubscribe_${name}(), $$unsubscribe_${name} = @subscribe(${name}, $$value => $$invalidate('${$name}', ${$name} = $$value)), ${name})`;
 			}
 
 			return $name;

src/compiler/compile/render_dom/wrappers/Window.ts

@@ -126,7 +126,7 @@ export default class WindowWrapper extends Wrapper {
 
 			component.partly_hoisted.push(deindent`
 				function ${handler_name}() {
-					${props.map(prop => `${prop.name} = @_window.${prop.value}; $$invalidate('${prop.name}', ${prop.name});`)}
+					${props.map(prop => `$$invalidate('${prop.name}', ${prop.name} = @_window.${prop.value});`)}
 				}
 			`);
 
@@ -170,7 +170,7 @@ export default class WindowWrapper extends Wrapper {
 
 			component.partly_hoisted.push(deindent`
 				function ${handler_name}() {
-					${name} = @_navigator.onLine; $$invalidate('${name}', ${name});
+					$$invalidate('${name}', ${name} = @_navigator.onLine);
 				}
 			`);
 

test/js/samples/bind-online/expected.js

@@ -37,7 +37,7 @@ function instance($$self, $$props, $$invalidate) {
 	let online;
 
 	function onlinestatuschanged() {
-		online = navigator.onLine; $$invalidate('online', online);
+		$$invalidate('online', online = navigator.onLine);
 	}
 
 	return { online, onlinestatuschanged };

test/js/samples/window-binding-scroll/expected.js

@@ -68,7 +68,7 @@ function instance($$self, $$props, $$invalidate) {
 	let { y } = $$props;
 
 	function onwindowscroll() {
-		y = window.pageYOffset; $$invalidate('y', y);
+		$$invalidate('y', y = window.pageYOffset);
 	}
 
 	$$self.$set = $$props => {