correctly transform inline shorthand methods - fixes #2906

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

@@ -442,6 +442,10 @@ export default class Expression {
 						`);
 					}
 
+					if (parent && parent.method) {
+						code.prependRight(node.start, ': ');
+					}
+
 					function_expression = null;
 					dependencies = null;
 					contextual_dependencies = null;

test/runtime/samples/shorthand-method-in-template/Foo.svelte

@@ -0,0 +1,5 @@
+<script>
+	export let bar;
+</script>
+
+{bar.answer()}

test/runtime/samples/shorthand-method-in-template/_config.js

@@ -0,0 +1,3 @@
+export default {
+	html: '42'
+};

test/runtime/samples/shorthand-method-in-template/main.svelte

@@ -0,0 +1,9 @@
+<script>
+	import Foo from './Foo.svelte';
+</script>
+
+<Foo bar={{
+	answer() {
+		return 42;
+	}
+}} />