Merge branch 'rfc-1' of github.com:sveltejs/svelte into rfc-1

src/compile/Component.ts

@@ -759,7 +759,7 @@ export default class Component {
 		const unsorted_reactive_declarations = [];
 
 		this.instance_script.content.body.forEach(node => {
-			if (node.type === 'LabeledStatement') {
+			if (node.type === 'LabeledStatement' && node.label.name === '$') {
 				this.reactive_declaration_nodes.add(node);
 
 				const assignees = new Set();
@@ -980,4 +980,4 @@ function process_meta(component, nodes) {
 	}
 
 	return meta;
-}
+}

store.js

@@ -24,7 +24,7 @@ export function readable(start, value) {
 				if (index !== -1) subscribers.splice(index, 1);
 
 				if (subscribers.length === 0) {
-					stop();
+					stop && stop();
 					stop = null;
 				}
 			};
@@ -85,4 +85,4 @@ export function derive(stores, fn) {
 			run_all(unsubscribers);
 		};
 	});
-}
+}