Support Svelte 3

fixes #546, #551, #552, #554

test/apps/export/src/client.js

@@ -1,4 +1,4 @@
-import * as sapper from '../__sapper__/client.js';
+import * as sapper from '@sapper/app';
 
 window.start = () => sapper.start({
 	target: document.querySelector('#sapper')

test/apps/export/src/routes/blog/[slug].html

@@ -1,11 +1,13 @@
-<h1>{post.title}</h1>
+<script context="module">
+	export function preload({ params }) {
+		return this.fetch(`blog/${params.slug}.json`).then(r => r.json()).then(post => {
+			return { post };
+		});
+	}
+</script>
 
 <script>
-	export default {
-		preload({ params }) {
-			return this.fetch(`blog/${params.slug}.json`).then(r => r.json()).then(post => {
-				return { post };
-			});
-		}
-	};
-</script>
+	export let post;
+</script>
+
+<h1>{post.title}</h1>

test/apps/export/src/routes/blog/index.html

@@ -1,15 +1,17 @@
+<script context="module">
+	export function preload() {
+		return this.fetch('blog.json').then(r => r.json()).then(posts => {
+			return { posts };
+		});
+	}
+</script>
+
+<script>
+	export let posts;
+</script>
+
 <h1>blog</h1>
 
 {#each posts as post}
 	<p><a href="blog/{post.slug}">{post.title}</a></p>
-{/each}
-
-<script>
-	export default {
-		preload() {
-			return this.fetch('blog.json').then(r => r.json()).then(posts => {
-				return { posts };
-			});
-		}
-	};
-</script>
+{/each}

test/apps/export/src/server.js

@@ -1,6 +1,6 @@
 import sirv from 'sirv';
 import polka from 'polka';
-import * as sapper from '../__sapper__/server.js';
+import * as sapper from '@sapper/server';
 
 const { PORT, NODE_ENV } = process.env;
 const dev = NODE_ENV === 'development';

test/apps/export/src/service-worker.js

@@ -1,10 +1,10 @@
-import { timestamp, files, shell, routes } from '../__sapper__/service-worker.js';
+import * as sapper from '@sapper/service-worker';
 
-const ASSETS = `cache${timestamp}`;
+const ASSETS = `cache${sapper.timestamp}`;
 
 // `shell` is an array of all the files generated by webpack,
 // `files` is an array of everything in the `static` directory
-const to_cache = shell.concat(ASSETS);
+const to_cache = sapper.shell.concat(sapper.files);
 const cached = new Set(to_cache);
 
 self.addEventListener('install', event => {
@@ -65,7 +65,7 @@ self.addEventListener('fetch', event => {
 	// might prefer a cache-first approach to a network-first one.)
 	event.respondWith(
 		caches
-			.open(`offline${timestamp}`)
+			.open(`offline${sapper.timestamp}`)
 			.then(async cache => {
 				try {
 					const response = await fetch(event.request);