prevent malformed code when injecting invalidate statements

src/compiler/compile/nodes/shared/Expression.ts

@@ -459,7 +459,7 @@ export default class Expression {
 						if (/^(Break|Continue|Return)Statement/.test(node.type)) {
 							if (node.argument) {
 								code.overwrite(node.start, node.argument.start, `var $$result = `);
-								code.appendLeft(node.argument.end, `${insert}; return $$result`);
+								code.appendLeft(node.end, `${insert}; return $$result`);
 							} else {
 								code.prependRight(node.start, `${insert}; `);
 							}

test/runtime/samples/function-expression-inline/_config.js

@@ -0,0 +1,22 @@
+export default {
+	html: `
+		<button>click me</button>
+		<p>1</p>
+		<p>2</p>
+		<p>3</p>
+	`,
+
+	async test({ assert, component, target, window }) {
+		const button = target.querySelector('button');
+		const click = new window.MouseEvent('click');
+
+		await button.dispatchEvent(click);
+
+		assert.htmlEqual(target.innerHTML, `
+			<button>click me</button>
+			<p>2</p>
+			<p>4</p>
+			<p>6</p>
+		`);
+	}
+}

test/runtime/samples/function-expression-inline/main.svelte

@@ -0,0 +1,13 @@
+<script>
+	let list = [1, 2, 3];
+</script>
+
+<button on:click={event => {
+	list = list.map(item => {
+		return item * 2;
+	});
+}}>click me</button>
+
+{#each list as number}
+	<p>{number}</p>
+{/each}