print warnings in dev mode for unused data

emit events for unused data, and only in dev/export mode
Merge branch 'master' into proxy-data
2026-01-13 19:45:26 +00:00 · 2018-08-03 01:14:26 -04:00 · 2018-08-03 01:14:08 -04:00 · 2018-08-03 00:15:26 -04:00 · 2018-08-03 00:11:09 -04:00 · 2018-08-03 00:10:58 -04:00
85 changed files with 9114 additions and 994 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,73 @@
 # sapper changelog
 ## 0.15.5
 * Faster `export` with more explanatory output ([#335](https://github.com/sveltejs/sapper/pull/335))
 * Only blur `activeElement` if it exists ([#332](https://github.com/sveltejs/sapper/issues/332))
 * Don't emit `client_info.json` or `server_info.json` ([#318](https://github.com/sveltejs/sapper/issues/318))
 ## 0.15.4
 * Add `ignore` option ([#326](https://github.com/sveltejs/sapper/pull/326))
 ## 0.15.3
 * Crawl pages in parallel when exporting ([#329](https://github.com/sveltejs/sapper/pull/329))
 * Don't minify inline JS when exporting ([#328](https://github.com/sveltejs/sapper/pull/328))
 ## 0.15.2
 * Collapse component chains where no intermediate layout component is specified ([#312](https://github.com/sveltejs/sapper/issues/312))
 ## 0.15.1
 * Prevent confusing error when no root layout is specified
 ## 0.15.0
 * Nested routes (consult [migration guide](https://sapper.svelte.technology/guide#0-14-to-0-15) and docs on [layouts](https://sapper.svelte.technology/guide#layouts)) ([#262](https://github.com/sveltejs/sapper/issues/262))
 ## 0.14.2
 * Prevent unsafe replacements ([#307](https://github.com/sveltejs/sapper/pull/307))
 ## 0.14.1
 * Route parameters can be qualified with regex characters ([#283](https://github.com/sveltejs/sapper/pull/283))
 ## 0.14.0
 * `4xx.html` and `5xx.html` are replaced with `_error.html` ([#209](https://github.com/sveltejs/sapper/issues/209))
 * Treat `foo/index.json.js` and `foo.json.js` as equivalents ([#297](https://github.com/sveltejs/sapper/issues/297))
 * Return a promise from `goto` ([#270](https://github.com/sveltejs/sapper/issues/270))
 * Use store when rendering error pages ([#293](https://github.com/sveltejs/sapper/issues/293))
 * Prevent console errors when visiting an error page ([#279](https://github.com/sveltejs/sapper/issues/279))
 ## 0.13.6
 * Fix `baseUrl` synthesis ([#296](https://github.com/sveltejs/sapper/issues/296))
 ## 0.13.5
 * Fix handling of fatal errors ([#289](https://github.com/sveltejs/sapper/issues/289))
 ## 0.13.4
 * Focus `<body>` after navigation ([#287](https://github.com/sveltejs/sapper/issues/287))
 * Fix timing of hot reload updates
 * Emit `fatal` event if server crashes ([#285](https://github.com/sveltejs/sapper/pull/285))
 * Emit `stdout` and `stderr` events on dev watcher ([#285](https://github.com/sveltejs/sapper/pull/285))
 * Always refresh client assets in dev ([#286](https://github.com/sveltejs/sapper/pull/286))
 * Correctly initialise rebuild stats
 ## 0.13.3
 * Make `fatal` events clonable for IPC purposes
 ## 0.13.2
 * Emit a `basepath` event ([#284](https://github.com/sveltejs/sapper/pull/284))
 ## 0.13.1
 * Reinstate ten-second interval between dev server heartbeats ([#276](https://github.com/sveltejs/sapper/issues/276))
--- a/README.md
+++ b/README.md
@@ -31,6 +31,44 @@ npm run build
 npm start
 ```
 ## Development
 Pull requests are encouraged and always welcome. [Pick an issue](https://github.com/sveltejs/sapper/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc) and help us out!
 To install and work on Sapper locally:
 ```bash
 git clone git@github.com:sveltejs/sapper.git
 cd sapper
 npm install
 npm run dev
 ```
 ### Linking to a Live Project
 You can make changes locally to Sapper and test it against a local Sapper project. For a quick project that takes almost no setup, use the default [sapper-template](https://github.com/sveltejs/sapper-template) project. Instruction on setup are found in that project repository.
 To link Sapper to your project, from the root of your local Sapper git checkout:
 ```bash
 cd sapper
 npm link
 ```
 Then, to link from `sapper-template` (or any other given project):
 ```bash
 cd sapper-template
 npm link sapper
 ```
 You should be good to test changes locally.
 ### Running Tests
 ```bash
 npm run test
 ```
 ## License
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,7 +10,7 @@ build: off
 environment:
  matrix:
    # node.js
-    - nodejs_version: stable
+    - nodejs_version: 10.5
 install:
  - ps: Install-Product node $env:nodejs_version
--- a/components/default-layout.html
+++ b/components/default-layout.html
@@ -0,0 +1 @@
 <svelte:component this={child.component} {...child.props}/>
--- a/mocha.opts
+++ b/mocha.opts
@@ -1,4 +1,4 @@
 --require source-map-support/register
 --recursive
-test/unit/**/*.js
+test/unit/*/*.js
 test/common/test.js
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "sapper",
-  "version": "0.13.1",
+  "version": "0.15.4",
  "description": "Military-grade apps, engineered by Svelte",
  "main": "dist/middleware.ts.js",
  "bin": {
@@ -12,6 +12,7 @@
    "runtime",
    "webpack",
    "sapper",
    "components",
    "dist"
  ],
  "directories": {
@@ -22,12 +23,12 @@
    "cheerio": "^1.0.0-rc.2",
    "chokidar": "^2.0.3",
    "cookie": "^0.3.1",
-    "devalue": "^1.0.1",
+    "devalue": "^1.0.4",
    "glob": "^7.1.2",
    "html-minifier": "^3.5.16",
    "mkdirp": "^0.5.1",
    "node-fetch": "^2.1.1",
-    "port-authority": "^1.0.2",
+    "port-authority": "^1.0.5",
    "pretty-bytes": "^5.0.0",
    "pretty-ms": "^3.1.0",
    "require-relative": "^0.8.7",
@@ -67,7 +68,7 @@
    "cy:open": "cypress open",
    "test": "mocha --opts mocha.opts",
    "pretest": "npm run build",
-    "build": "rollup -c",
+    "build": "rm -rf dist && rollup -c",
    "dev": "rollup -cw",
    "prepublishOnly": "npm test",
    "update_mime_types": "curl http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types | grep -e \"^[^#]\" > src/middleware/mime-types.md"
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -19,7 +19,8 @@ export default [
 		},
 		plugins: [
 			typescript({
-				typescript: require('typescript')
+				typescript: require('typescript'),
 				target: "ES2017"
 			})
 		]
 	},
--- a/src/api/build.ts
+++ b/src/api/build.ts
@@ -4,8 +4,7 @@ import mkdirp from 'mkdirp';
 import rimraf from 'rimraf';
 import { EventEmitter } from 'events';
 import { minify_html } from './utils/minify_html';
-import { create_compilers, create_main_manifests, create_routes, create_serviceworker_manifest } from '../core'
+import { create_compilers, create_main_manifests, create_routes, create_serviceworker_manifest } from '../core';
 import { locations } from '../config';
 import * as events from './interfaces';
 export function build(opts: {}) {
@@ -62,7 +61,6 @@ async function execute(emitter: EventEmitter, {
 	});
 	const client_info = client_stats.toJson();
 	fs.writeFileSync(path.join(dest, 'client_info.json'), JSON.stringify(client_info));
 	fs.writeFileSync(path.join(dest, 'client_assets.json'), JSON.stringify(client_info.assetsByChunkName));
 	const server_stats = await compile(server);
--- a/src/api/dev.ts
+++ b/src/api/dev.ts
@@ -6,10 +6,10 @@ import * as ports from 'port-authority';
 import mkdirp from 'mkdirp';
 import rimraf from 'rimraf';
 import format_messages from 'webpack-format-messages';
 import prettyMs from 'pretty-ms';
 import { locations } from '../config';
 import { EventEmitter } from 'events';
 import { create_routes, create_main_manifests, create_compilers, create_serviceworker_manifest } from '../core';
 import Deferred from './utils/Deferred';
 import * as events from './interfaces';
 export function dev(opts) {
@@ -34,6 +34,7 @@ class Watcher extends EventEmitter {
 		server: Deferred;
 	};
 	crashed: boolean;
 	restarting: boolean;
 	current_build: {
 		changed: Set<string>;
@@ -91,7 +92,7 @@ class Watcher extends EventEmitter {
 		if (this.port) {
 			if (!await ports.check(this.port)) {
 				this.emit('fatal', <events.FatalEvent>{
-					error: new Error(`Port ${this.port} is unavailable`)
+					message: `Port ${this.port} is unavailable`
 				});
 				return;
 			}
@@ -105,8 +106,15 @@ class Watcher extends EventEmitter {
 		const dev_port = await ports.find(10000);
-		const routes = create_routes();
+		try {
-		create_main_manifests({ routes, dev_port });
+			const routes = create_routes();
 			create_main_manifests({ routes, dev_port });
 		} catch (err) {
 			this.emit('fatal', <events.FatalEvent>{
 				message: err.message
 			});
 			return;
 		}
 		this.dev_server = new DevServer(dev_port);
@@ -114,6 +122,15 @@ class Watcher extends EventEmitter {
 			watch_files(locations.routes(), ['add', 'unlink'], () => {
 				const routes = create_routes();
 				create_main_manifests({ routes, dev_port });
 				try {
 					const routes = create_routes();
 					create_main_manifests({ routes, dev_port });
 				} catch (err) {
 					this.emit('error', <events.ErrorEvent>{
 						message: err.message
 					});
 				}
 			}),
 			watch_files(`${locations.app()}/template.html`, ['change'], () => {
@@ -131,6 +148,18 @@ class Watcher extends EventEmitter {
 		// TODO watch the configs themselves?
 		const compilers = create_compilers({ webpack: this.dirs.webpack });
 		let log = '';
 		const emitFatal = () => {
 			this.emit('fatal', <events.FatalEvent>{
 				message: `Server crashed`,
 				log
 			});
 			this.crashed = true;
 			this.proc = null;
 		};
 		this.watch(compilers.server, {
 			name: 'server',
@@ -140,25 +169,36 @@ class Watcher extends EventEmitter {
 			},
 			result: info => {
 				fs.writeFileSync(path.join(dest, 'server_info.json'), JSON.stringify(info, null, '  '));
 				this.deferreds.client.promise.then(() => {
 					this.dev_server.send({
 						status: 'completed'
 					});
 					const restart = () => {
-						ports.wait(this.port).then((() => {
+						log = '';
-							this.emit('ready', <events.ReadyEvent>{
+						this.crashed = false;
 								port: this.port,
 								process: this.proc
 							});
-							this.deferreds.server.fulfil();
+						ports.wait(this.port)
-						}));
+							.then((() => {
 								this.emit('ready', <events.ReadyEvent>{
 									port: this.port,
 									process: this.proc
 								});
 								this.deferreds.server.fulfil();
 								this.dev_server.send({
 									status: 'completed'
 								});
 							}))
 							.catch(err => {
 								if (this.crashed) return;
 								this.emit('fatal', <events.FatalEvent>{
 									message: `Server is not listening on port ${this.port}`,
 									log
 								});
 							});
 					};
 					if (this.proc) {
 						this.proc.removeListener('exit', emitFatal);
 						this.proc.kill();
 						this.proc.on('exit', restart);
 					} else {
@@ -172,6 +212,23 @@ class Watcher extends EventEmitter {
 						}, process.env),
 						stdio: ['ipc']
 					});
 					this.proc.stdout.on('data', chunk => {
 						log += chunk;
 						this.emit('stdout', chunk);
 					});
 					this.proc.stderr.on('data', chunk => {
 						log += chunk;
 						this.emit('stderr', chunk);
 					});
 					this.proc.on('message', message => {
 						if (!message.__sapper__) return;
 						this.emit(message.event, message);
 					});
 					this.proc.on('exit', emitFatal);
 				});
 			}
 		});
@@ -191,7 +248,6 @@ class Watcher extends EventEmitter {
 			},
 			result: info => {
 				fs.writeFileSync(path.join(dest, 'client_info.json'), JSON.stringify(info));
 				fs.writeFileSync(path.join(dest, 'client_assets.json'), JSON.stringify(info.assetsByChunkName, null, '  '));
 				this.deferreds.client.fulfil();
@@ -227,7 +283,7 @@ class Watcher extends EventEmitter {
 		if (this.closed) return;
 		this.closed = true;
-		this.dev_server.close();
+		if (this.dev_server) this.dev_server.close();
 		if (this.proc) this.proc.kill();
 		this.filewatchers.forEach(watcher => {
@@ -243,8 +299,8 @@ class Watcher extends EventEmitter {
 			this.restarting = true;
 			this.current_build = {
-				changed: new Set(),
+				changed: new Set([filename]),
-				rebuilding: new Set(),
+				rebuilding: new Set([type]),
 				unique_warnings: new Set(),
 				unique_errors: new Set()
 			};
@@ -277,7 +333,7 @@ class Watcher extends EventEmitter {
 			if (err) {
 				this.emit('error', <events.ErrorEvent>{
 					type: name,
-					error: err
+					message: err.message
 				});
 			} else {
 				const messages = format_messages(stats);
@@ -340,19 +396,6 @@ function mungeWebpackError(message: string, duplicate: boolean) {
 	};
 }
 class Deferred {
 	promise: Promise<any>;
 	fulfil: (value?: any) => void;
 	reject: (error: Error) => void;
 	constructor() {
 		this.promise = new Promise((fulfil, reject) => {
 			this.fulfil = fulfil;
 			this.reject = reject;
 		});
 	}
 }
 const INTERVAL = 10000;
 class DevServer {
--- a/src/api/export.ts
+++ b/src/api/export.ts
@@ -7,7 +7,7 @@ import fetch from 'node-fetch';
 import * as ports from 'port-authority';
 import { EventEmitter } from 'events';
 import { minify_html } from './utils/minify_html';
-import { locations } from '../config';
+import Deferred from './utils/Deferred';
 import * as events from './interfaces';
 export function exporter(opts: {}) {
@@ -52,6 +52,10 @@ async function execute(emitter: EventEmitter, {
 	const origin = `http://localhost:${port}`;
 	emitter.emit('info', {
 		message: `Crawling ${origin}`
 	});
 	const proc = child_process.fork(path.resolve(`${build}/server.js`), [], {
 		cwd: process.cwd(),
 		env: Object.assign({
@@ -64,11 +68,21 @@ async function execute(emitter: EventEmitter, {
 	const seen = new Set();
 	const saved = new Set();
 	const deferreds = new Map();
 	function get_deferred(pathname: string) {
 		if (!deferreds.has(pathname)) {
 			deferreds.set(pathname, new Deferred())	;
 		}
 		return deferreds.get(pathname);
 	}
 	proc.on('message', message => {
-		if (!message.__sapper__) return;
+		if (!message.__sapper__ || message.event !== 'file') return;
-		let file = new URL(message.url, origin).pathname.slice(1);
+		const pathname = new URL(message.url, origin).pathname;
 		let file = pathname.slice(1);
 		let { body } = message;
 		if (saved.has(file)) return;
@@ -83,24 +97,26 @@ async function execute(emitter: EventEmitter, {
 		emitter.emit('file', <events.FileEvent>{
 			file,
-			size: body.length
+			size: body.length,
 			status: message.status
 		});
 		sander.writeFileSync(export_dir, file, body);
 		get_deferred(pathname).fulfil();
 	});
 	async function handle(url: URL) {
 		const pathname = url.pathname || '/';
 		if (seen.has(pathname)) return;
 		seen.add(pathname);
 		const deferred = get_deferred(pathname);
 		const r = await fetch(url.href);
 		const range = ~~(r.status / 100);
 		if (range >= 4) {
 			emitter.emit('failure', <events.FailureEvent>{
 				status: r.status,
 				pathname: url.pathname
 			});
 			return;
 		}
 		if (range === 2) {
 			if (r.headers.get('Content-Type') === 'text/html') {
 				const body = await r.text();
@@ -111,18 +127,14 @@ async function execute(emitter: EventEmitter, {
 				$('a[href]').each((i: number, $a) => {
 					const url = new URL($a.attribs.href, base.href);
-
+					if (url.origin === origin) urls.push(url);
 					if (url.origin === origin && !seen.has(url.pathname)) {
 						seen.add(url.pathname);
 						urls.push(url);
 					}
 				});
-				for (const url of urls) {
+				await Promise.all(urls.map(handle));
 					await handle(url);
 				}
 			}
 		}
 		await deferred.promise;
 	}
 	return ports.wait(port)
--- a/src/api/find_page.ts
+++ b/src/api/find_page.ts
@@ -2,15 +2,14 @@ import * as glob from 'glob';
 import { locations } from '../config';
 import { create_routes } from '../core';
-export function find_page(pathname: string, files: string[] = glob.sync('**/*.*', { cwd: locations.routes(), dot: true, nodir: true })) {
+export function find_page(pathname: string, cwd = locations.routes()) {
-	const routes = create_routes({ files });
+	const { pages } = create_routes(cwd);
-	for (let i = 0; i < routes.length; i += 1) {
+	for (let i = 0; i < pages.length; i += 1) {
-		const route = routes[i];
+		const page = pages[i];
-		if (route.pattern.test(pathname)) {
+		if (page.pattern.test(pathname)) {
-			const page = route.handlers.find(handler => handler.type === 'page');
+			return page.parts[page.parts.length - 1].component.file;
 			if (page) return page.file;
 		}
 	}
 }
--- a/src/api/interfaces.ts
+++ b/src/api/interfaces.ts
@@ -7,11 +7,12 @@ export type ReadyEvent = {
 export type ErrorEvent = {
 	type: string;
-	error: Error;
+	message: string;
 };
 export type FatalEvent = {
-	error: Error;
+	message: string;
 	log?: string;
 };
 export type InvalidEvent = {
--- a/src/api/utils/Deferred.ts
+++ b/src/api/utils/Deferred.ts
@@ -0,0 +1,12 @@
 export default class Deferred {
 	promise: Promise<any>;
 	fulfil: (value?: any) => void;
 	reject: (error: Error) => void;
 	constructor() {
 		this.promise = new Promise((fulfil, reject) => {
 			this.fulfil = fulfil;
 			this.reject = reject;
 		});
 	}
 }
--- a/src/api/utils/minify_html.ts
+++ b/src/api/utils/minify_html.ts
@@ -8,7 +8,7 @@ export function minify_html(html: string) {
 		decodeEntities: true,
 		html5: true,
 		minifyCSS: true,
-		minifyJS: true,
+		minifyJS: false,
 		removeAttributeQuotes: true,
 		removeComments: true,
 		removeOptionalTags: true,
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -1,11 +1,8 @@
 import * as fs from 'fs';
 import * as path from 'path';
 import * as child_process from 'child_process';
 import sade from 'sade';
 import * as colors from 'ansi-colors';
 import prettyMs from 'pretty-ms';
 // import upgrade from './cli/upgrade';
 import * as ports from 'port-authority';
 import * as pkg from '../package.json';
 const prog = sade('sapper').version(pkg.version);
@@ -65,19 +62,22 @@ prog.command('start [dir]')
 prog.command('export [dest]')
 	.describe('Export your app as static files (if possible)')
 	.option('--build', '(Re)build app before exporting', true)
 	.option('--build-dir', 'Specify a custom temporary build directory', '.sapper/prod')
 	.option('--basepath', 'Specify a base path')
-	.action(async (dest = 'export', opts: { basepath?: string }) => {
+	.action(async (dest = 'export', opts: { build: boolean, 'build-dir': string, basepath?: string }) => {
 		console.log(`> Building...`);
 		process.env.NODE_ENV = 'production';
-		process.env.SAPPER_DEST = '.sapper/.export';
+		process.env.SAPPER_DEST = opts['build-dir'];
 		const start = Date.now();
 		try {
-			const { build } = await import('./cli/build');
+			if (opts.build) {
-			await build();
+				console.log(`> Building...`);
-			console.error(`\n> Built in ${elapsed(start)}. Crawling site...`);
+				const { build } = await import('./cli/build');
 				await build();
 				console.error(`\n> Built in ${elapsed(start)}`);
 			}
 			const { exporter } = await import('./cli/export');
 			await exporter(dest, opts);
--- a/src/cli/dev.ts
+++ b/src/cli/dev.ts
@@ -2,6 +2,7 @@ import * as path from 'path';
 import * as colors from 'ansi-colors';
 import * as child_process from 'child_process';
 import prettyMs from 'pretty-ms';
 import pb from 'pretty-bytes';
 import { dev as _dev } from '../api/dev';
 import * as events from '../api/interfaces';
@@ -36,11 +37,38 @@ export function dev(opts: { port: number, open: boolean }) {
 		watcher.on('error', (event: events.ErrorEvent) => {
 			console.log(`${colors.red(`✗ ${event.type}`)}`);
-			console.log(`${colors.red(event.error.message)}`);
+			console.log(`${colors.red(event.message)}`);
 		});
 		watcher.on('fatal', (event: events.FatalEvent) => {
-			console.log(`${colors.bold.red(`> ${event.error.message}`)}`);
+			console.log(`${colors.bold.red(`> ${event.message}`)}`);
 			if (event.log) console.log(event.log);
 		});
 		watcher.on('preload', (event) => {
 			if (event.size > 25000) {
 				console.log(colors.bold.yellow(`${event.url} — large amount of preloaded data`));
 				console.log(`${colors.bold(pb(event.size))} of data was preloaded in total, above the recommended limit of ${pb(25000)}`);
 			}
 		});
 		watcher.on('unused_data', (event) => {
 			console.log(colors.bold.yellow(`${event.url} — unused preloaded data`));
 			console.log(`More data was returned from \`preload\` than was used during the initial render. Consider only returning essential data.`);
 			event.discrepancies.forEach(discrepancy => {
 				console.log(`${colors.bold(discrepancy.file)} loaded ${colors.bold(pb(discrepancy.preloaded))}, of which ${discrepancy.rendered > 2 ? `only ${colors.bold(pb(discrepancy.rendered))}` : 'none'} was used. The following properties were not referenced:`);
 				const slice = discrepancy.props.length > 12
 					? discrepancy.props.slice(0, 10)
 					: discrepancy.props;
 				console.log(slice.map((prop: string) => `• ${prop}`).join('\n'));
 				if (discrepancy.props.length > slice.length) {
 					console.log(`...and ${discrepancy.props.length - slice.length} more`);
 				}
 			});
 		});
 		watcher.on('build', (event: events.BuildEvent) => {
--- a/src/cli/export.ts
+++ b/src/cli/export.ts
@@ -3,6 +3,11 @@ import * as colors from 'ansi-colors';
 import prettyBytes from 'pretty-bytes';
 import { locations } from '../config';
 function left_pad(str: string, len: number) {
 	while (str.length < len) str = ` ${str}`;
 	return str;
 }
 export function exporter(export_dir: string, { basepath = '' }) {
 	return new Promise((fulfil, reject) => {
 		try {
@@ -13,11 +18,19 @@ export function exporter(export_dir: string, { basepath = '' }) {
 			});
 			emitter.on('file', event => {
-				console.log(`${colors.bold.cyan(event.file)} ${colors.gray(`(${prettyBytes(event.size)})`)}`);
+				const pb = prettyBytes(event.size);
 				const size_color = event.size > 150000 ? colors.bold.red : event.size > 50000 ? colors.bold.yellow : colors.bold.gray;
 				const size_label = size_color(left_pad(prettyBytes(event.size), 10));
 				const file_label = event.status === 200
 					? event.file
 					: colors.bold[event.status >= 400 ? 'red' : 'yellow'](`(${event.status}) ${event.file}`);
 				console.log(`${size_label}   ${file_label}`);
 			});
-			emitter.on('failure', event => {
+			emitter.on('info', event => {
-				console.log(`${colors.red(`> Received ${event.status} response when fetching ${event.pathname}`)}`);
+				console.log(colors.bold.cyan(`> ${event.message}`));
 			});
 			emitter.on('error', event => {
--- a/src/config.ts
+++ b/src/config.ts
@@ -6,5 +6,5 @@ export const locations = {
 	base:   () => path.resolve(process.env.SAPPER_BASE || ''),
 	app:    () => path.resolve(process.env.SAPPER_BASE || '', process.env.SAPPER_APP    || 'app'),
 	routes: () => path.resolve(process.env.SAPPER_BASE || '', process.env.SAPPER_ROUTES || 'routes'),
-	dest:   () => path.resolve(process.env.SAPPER_BASE || '', process.env.SAPPER_DEST   || '.sapper')
+	dest:   () => path.resolve(process.env.SAPPER_BASE || '', process.env.SAPPER_DEST   || `.sapper/${dev() ? 'dev' : 'prod'}`)
 };
--- a/src/core/create_manifests.ts
+++ b/src/core/create_manifests.ts
@@ -3,10 +3,10 @@ import * as path from 'path';
 import * as glob from 'glob';
 import { posixify, write_if_changed } from './utils';
 import { dev, locations } from '../config';
-import { Route } from '../interfaces';
+import { Page, PageComponent, ServerRoute } from '../interfaces';
 export function create_main_manifests({ routes, dev_port }: {
-	routes: Route[];
+	routes: { components: PageComponent[], pages: Page[], server_routes: ServerRoute[] };
 	dev_port?: number;
 }) {
 	const path_to_routes = path.relative(`${locations.app()}/manifest`, locations.routes());
@@ -14,12 +14,16 @@ export function create_main_manifests({ routes, dev_port }: {
 	const client_manifest = generate_client(routes, path_to_routes, dev_port);
 	const server_manifest = generate_server(routes, path_to_routes);
 	write_if_changed(
 		`${locations.app()}/manifest/default-layout.html`,
 		`<svelte:component this={child.component} {...child.props}/>`
 	);
 	write_if_changed(`${locations.app()}/manifest/client.js`, client_manifest);
 	write_if_changed(`${locations.app()}/manifest/server.js`, server_manifest);
 }
 export function create_serviceworker_manifest({ routes, client_files }: {
-	routes: Route[];
+	routes: { components: PageComponent[], pages: Page[], server_routes: ServerRoute[] };
 	client_files: string[];
 }) {
 	const assets = glob.sync('**', { cwd: 'assets', nodir: true });
@@ -32,38 +36,69 @@ export function create_serviceworker_manifest({ routes, client_files }: {
 		export const shell = [\n\t${client_files.map((x: string) => `"${x}"`).join(',\n\t')}\n];
-		export const routes = [\n\t${routes.filter((r: Route) => r.type === 'page' && !/^_[45]xx$/.test(r.id)).map((r: Route) => `{ pattern: ${r.pattern} }`).join(',\n\t')}\n];
+		export const routes = [\n\t${routes.pages.map((r: Page) => `{ pattern: ${r.pattern} }`).join(',\n\t')}\n];
 	`.replace(/^\t\t/gm, '').trim();
 	write_if_changed(`${locations.app()}/manifest/service-worker.js`, code);
 }
-function generate_client(routes: Route[], path_to_routes: string, dev_port?: number) {
+function right_pad(str: string, len: number) {
 	while (str.length < len) str += ' ';
 	return str;
 }
 function generate_client(
 	routes: { root: PageComponent, components: PageComponent[], pages: Page[], server_routes: ServerRoute[] },
 	path_to_routes: string,
 	dev_port?: number
 ) {
 	const page_ids = new Set(routes.pages.map(page =>
 		page.pattern.toString()));
 	const server_routes_to_ignore = routes.server_routes.filter(route =>
 		!page_ids.has(route.pattern.toString()));
 	const len = Math.max(...routes.components.map(c => c.name.length));
 	let code = `
 		// This file is generated by Sapper — do not edit it!
-		export const routes = [
+		import root from '${get_file(path_to_routes, routes.root)}';
-			${routes
+		import error from '${posixify(`${path_to_routes}/_error.html`)}';
 				.map(route => {
 					const page = route.handlers.find(({ type }) => type === 'page');
-					if (!page) {
+		${routes.components.map(component =>
-						return `{ pattern: ${route.pattern}, ignore: true }`;
+		`const ${component.name} = () =>
-					}
+			import(/* webpackChunkName: "${component.name}" */ '${get_file(path_to_routes, component)}');`)
 		.join('\n')}
-					const file = posixify(`${path_to_routes}/${page.file}`);
+		export const manifest = {
 			ignore: [${server_routes_to_ignore.map(route => route.pattern).join(', ')}],
-					if (route.id === '_4xx' || route.id === '_5xx') {
+			pages: [
-						return `{ error: '${route.id.slice(1)}', load: () => import(/* webpackChunkName: "${route.id}" */ '${file}') }`;
+				${routes.pages.map(page => `{
-					}
+					// ${page.parts[page.parts.length - 1].component.file}
 					pattern: ${page.pattern},
 					parts: [
 						${page.parts.map(part => {
 							if (part === null) return 'null';
-					const params = route.params.length === 0
+							if (part.params.length > 0) {
-						? '{}'
+								const props = part.params.map((param, i) => `${param}: match[${i + 1}]`);
-						: `{ ${route.params.map((part, i) => `${part}: match[${i + 1}]`).join(', ')} }`;
+								return `{ component: ${part.component.name}, params: match => ({ ${props.join(', ')} }) }`;
 							}
-					return `{ pattern: ${route.pattern}, params: ${route.params.length > 0 ? `match` : `()`} => (${params}), load: () => import(/* webpackChunkName: "${route.id}" */ '${file}') }`;
+							return `{ component: ${part.component.name} }`;
-				})
+						}).join(',\n\t\t\t\t\t\t')}
-				.join(',\n\t')}
+					]
-		];`.replace(/^\t\t/gm, '').trim();
+				}`).join(',\n\n\t\t\t\t')}
 			],
 			root,
 			error
 		};
 		// this is included for legacy reasons
 		export const routes = {};`.replace(/^\t\t/gm, '').trim();
 	if (dev()) {
 		const sapper_dev_client = posixify(
@@ -82,44 +117,75 @@ function generate_client(routes: Route[], path_to_routes: string, dev_port?: num
 	return code;
 }
-function generate_server(routes: Route[], path_to_routes: string) {
+function generate_server(
 	routes: { root: PageComponent, components: PageComponent[], pages: Page[], server_routes: ServerRoute[] },
 	path_to_routes: string
 ) {
 	const imports = [].concat(
 		routes.server_routes.map(route =>
 			`import * as ${route.name} from '${posixify(`${path_to_routes}/${route.file}`)}';`),
 		routes.components.map(component =>
 			`import ${component.name} from '${get_file(path_to_routes, component)}';`),
 		`import root from '${get_file(path_to_routes, routes.root)}';`,
 		`import error from '${posixify(`${path_to_routes}/_error.html`)}';`
 	);
 	let code = `
 		// This file is generated by Sapper — do not edit it!
-		${routes
+		${imports.join('\n')}
 			.map(route =>
 				route.handlers
 					.map(({ type, file }, index) => {
 						const module = posixify(`${path_to_routes}/${file}`);
-						return type === 'page'
+		export const manifest = {
-							? `import ${route.id}${index} from '${module}';`
+			server_routes: [
-							: `import * as ${route.id}${index} from '${module}';`;
+				${routes.server_routes.map(route => `{
-					})
+					// ${route.file}
-					.join('\n')
+					pattern: ${route.pattern},
-			)
+					handlers: ${route.name},
-			.join('\n')}
+					params: ${route.params.length > 0
 						? `match => ({ ${route.params.map((param, i) => `${param}: match[${i + 1}]`).join(', ')} })`
 						: `() => ({})`}
 				}`).join(',\n\n\t\t\t\t')}
 			],
-		export const routes = [
+			pages: [
-			${routes
+				${routes.pages.map(page => `{
-				.map(route => {
+					// ${page.parts[page.parts.length - 1].component.file}
-					const handlers = route.handlers
+					pattern: ${page.pattern},
-						.map(({ type }, index) =>
+					parts: [
-							`{ type: '${type}', module: ${route.id}${index} }`)
+						${page.parts.map(part => {
-						.join(', ');
+							if (part === null) return 'null';
-					if (route.id === '_4xx' || route.id === '_5xx') {
+							const props = [
-						return `{ error: '${route.id.slice(1)}', handlers: [${handlers}] }`;
+								`name: "${part.component.name}"`,
-					}
+								`file: "${part.component.file}"`,
 								`component: ${part.component.name}`
 							];
-					const params = route.params.length === 0
+							if (part.params.length > 0) {
-						? '{}'
+								const params = part.params.map((param, i) => `${param}: match[${i + 1}]`);
-						: `{ ${route.params.map((part, i) => `${part}: match[${i + 1}]`).join(', ')} }`;
+								props.push(`params: match => ({ ${params.join(', ')} })`);
 							}
-					return `{ id: '${route.id}', pattern: ${route.pattern}, params: ${route.params.length > 0 ? `match` : `()`} => (${params}), handlers: [${handlers}] }`;
+							return `{ ${props.join(', ')} }`;
-				})
+						}).join(',\n\t\t\t\t\t\t')}
-				.join(',\n\t')
+					]
-			}
+				}`).join(',\n\n\t\t\t\t')}
-		];`.replace(/^\t\t/gm, '').trim();
+			],
 			root,
 			error
 		};
 		// this is included for legacy reasons
 		export const routes = {};`.replace(/^\t\t/gm, '').trim();
 	return code;
 }
 function get_file(path_to_routes: string, component: PageComponent) {
 	if (component.default) {
 		return `./default-layout.html`;
 	}
 	return posixify(`${path_to_routes}/${component.file}`);
 }
--- a/src/core/create_routes.ts
+++ b/src/core/create_routes.ts
@@ -1,154 +1,300 @@
 import * as fs from 'fs';
 import * as path from 'path';
 import glob from 'glob';
 import { locations } from '../config';
-import { Route } from '../interfaces';
+import { Page, PageComponent, ServerRoute } from '../interfaces';
 import { posixify } from './utils';
-export default function create_routes({ files } = { files: glob.sync('**/*.*', { cwd: locations.routes(), dot: true, nodir: true }) }) {
+const default_layout_file = posixify(path.resolve(
-	const routes: Route[] = files
+	__dirname,
-		.filter((file: string) => !/(^|\/|\\)_/.test(file))
+	'../components/default-layout.html'
-		.map((file: string) => {
+));
 			if (/(^|\/|\\)(_|\.(?!well-known))/.test(file)) return;
-			if (/]\[/.test(file)) {
+export default function create_routes(cwd = locations.routes()) {
-				throw new Error(`Invalid route ${file} — parameters must be separated`);
+	const components: PageComponent[] = [];
-			}
+	const pages: Page[] = [];
 	const server_routes: ServerRoute[] = [];
-			const base = file.replace(/\.[^/.]+$/, '');
+	const default_layout: PageComponent = {
-			const parts = base.split('/'); // glob output is always posix-style
+		default: true,
-			if (parts[parts.length - 1] === 'index') parts.pop();
+		name: '_default_layout',
 		file: null
 	};
-			return {
+	function walk(
-				files: [file],
+		dir: string,
-				base,
+		parent_segments: Part[][],
-				parts
+		parent_params: string[],
-			};
+		stack: Array<{
-		})
+			component: PageComponent,
-		.filter(Boolean)
+			params: string[]
-		.filter((a, index, array) => {
+		}>
-			const found = array.slice(index + 1).find(b => a.base === b.base);
+	) {
-			if (found) found.files.push(...a.files);
+		const items = fs.readdirSync(dir)
-			return !found;
+			.map(basename => {
-		})
+				const resolved = path.join(dir, basename);
-		.sort((a, b) => {
+				const file = path.relative(cwd, resolved);
-			if (a.parts[0] === '4xx' || a.parts[0] === '5xx') return -1;
+				const is_dir = fs.statSync(resolved).isDirectory();
 			if (b.parts[0] === '4xx' || b.parts[0] === '5xx') return 1;
-			const max = Math.max(a.parts.length, b.parts.length);
+				const segment = is_dir
 					? basename
 					: basename.slice(0, -path.extname(basename).length);
-			for (let i = 0; i < max; i += 1) {
+				const parts = get_parts(segment);
-				const a_part = a.parts[i];
+				const is_index = is_dir ? false : basename.startsWith('index.');
-				const b_part = b.parts[i];
+				const is_page = path.extname(basename) === '.html';
-				if (!a_part) return -1;
+				parts.forEach(part => {
-				if (!b_part) return 1;
+					if (/\]\[/.test(part.content)) {
-
+						throw new Error(`Invalid route ${file} — parameters must be separated`);
 				const a_sub_parts = get_sub_parts(a_part);
 				const b_sub_parts = get_sub_parts(b_part);
 				const max = Math.max(a_sub_parts.length, b_sub_parts.length);
 				for (let i = 0; i < max; i += 1) {
 					const a_sub_part = a_sub_parts[i];
 					const b_sub_part = b_sub_parts[i];
 					if (!a_sub_part) return 1; // b is more specific, so goes first
 					if (!b_sub_part) return -1;
 					if (a_sub_part.dynamic !== b_sub_part.dynamic) {
 						return a_sub_part.dynamic ? 1 : -1;
 					}
-					if (!a_sub_part.dynamic && a_sub_part.content !== b_sub_part.content) {
+					if (part.qualifier && /[\(\)\?\:]/.test(part.qualifier.slice(1, -1))) {
-						return (
+						throw new Error(`Invalid route ${file} — cannot use (, ), ? or : in route qualifiers`);
 							(b_sub_part.content.length - a_sub_part.content.length) ||
 							(a_sub_part.content < b_sub_part.content ? -1 : 1)
 						);
 					}
 				}
 			}
 			throw new Error(`The ${a.base} and ${b.base} routes clash`);
 		})
 		.map(({ files, base, parts }) => {
 			const id = (
 				parts.join('_').replace(/[[\]]/g, '$').replace(/^\d/, '_$&').replace(/[^a-zA-Z0-9_$]/g, '_')
 			 ) || '_';
 			const params: string[] = [];
 			const param_pattern = /\[([^\]]+)\]/g;
 			let match;
 			while (match = param_pattern.exec(base)) {
 				params.push(match[1]);
 			}
 			// TODO can we do all this with sub-parts? or does
 			// nesting make that impossible?
 			let pattern_string = '';
 			let i = parts.length;
 			let nested = true;
 			while (i--) {
 				const part = encodeURI(parts[i].normalize()).replace(/\?/g, '%3F').replace(/#/g, '%23').replace(/%5B/g, '[').replace(/%5D/g, ']');
 				const dynamic = ~part.indexOf('[');
 				if (dynamic) {
 					const matcher = part.replace(param_pattern, `([^\/]+?)`);
 					pattern_string = nested ? `(?:\\/${matcher}${pattern_string})?` : `\\/${matcher}${pattern_string}`;
 				} else {
 					nested = false;
 					pattern_string = `\\/${part}${pattern_string}`;
 				}
 			}
 			const pattern = new RegExp(`^${pattern_string}\\/?$`);
 			const test = (url: string) => pattern.test(url);
 			const exec = (url: string) => {
 				const match = pattern.exec(url);
 				if (!match) return;
 				const result: Record<string, string> = {};
 				params.forEach((param, i) => {
 					result[param] = match[i + 1];
 				});
-				return result;
+				return {
-			};
+					basename,
 					parts,
 					file: posixify(file),
 					is_dir,
 					is_index,
 					is_page
 				};
 			})
 			.sort(comparator);
-			return {
+		items.forEach(item => {
-				id,
+			if (item.basename[0] === '_') return;
-				handlers: files.map(file => ({
+
-					type: path.extname(file) === '.html' ? 'page' : 'route',
+			if (item.basename[0] === '.') {
-					file
+				if (item.file !== '.well-known') return;
-				})).sort((a, b) => {
+			}
-					if (a.type === 'page' && b.type === 'route') {
+
-						return 1;
+			const segments = parent_segments.slice();
 			if (item.is_index && segments.length > 0) {
 				const last_segment = segments[segments.length - 1].slice();
 				const suffix = item.basename
 					.slice(0, -path.extname(item.basename).length).
 					replace('index', '');
 				if (suffix) {
 					const last_part = last_segment[last_segment.length - 1];
 					if (last_part.dynamic) {
 						last_segment.push({ dynamic: false, content: suffix });
 					} else {
 						last_segment[last_segment.length - 1] = {
 							dynamic: false,
 							content: `${last_part.content}${suffix}`
 						};
 					}
-					if (a.type === 'route' && b.type === 'page') {
+					segments[segments.length - 1] = last_segment;
-						return -1;
+				}
-					}
+			} else {
 				segments.push(item.parts);
 			}
-					return 0;
+			const params = parent_params.slice();
-				}),
+			params.push(...item.parts.filter(p => p.dynamic).map(p => p.content));
-				pattern,
+
-				test,
+			if (item.is_dir) {
-				exec,
+				const index = path.join(dir, item.basename, '_layout.html');
-				parts,
+
-				params
+				const component = fs.existsSync(index) && {
-			};
+					name: `${get_slug(item.file)}__layout`,
 					file: `${item.file}/_layout.html`
 				};
 				if (component) components.push(component);
 				walk(
 					path.join(dir, item.basename),
 					segments,
 					params,
 					component
 						? stack.concat({ component, params })
 						: stack.concat(null)
 				);
 			}
 			else if (item.is_page) {
 				const component = {
 					name: get_slug(item.file),
 					file: item.file
 				};
 				const parts = stack.concat({
 					component,
 					params
 				});
 				components.push(component);
 				if (item.basename === 'index.html') {
 					pages.push({
 						pattern: get_pattern(parent_segments),
 						parts
 					});
 				} else {
 					pages.push({
 						pattern: get_pattern(segments),
 						parts
 					});
 				}
 			}
 			else {
 				server_routes.push({
 					name: `route_${get_slug(item.file)}`,
 					pattern: get_pattern(segments),
 					file: item.file,
 					params: params
 				});
 			}
 		});
 	}
-	return routes;
+	const root_file = path.join(cwd, '_layout.html');
 	const root = fs.existsSync(root_file)
 		? {
 			name: 'main',
 			file: '_layout.html'
 		}
 		: default_layout;
 	walk(cwd, [], [], []);
 	// check for clashes
 	const seen_pages: Map<string, Page> = new Map();
 	pages.forEach(page => {
 		const pattern = page.pattern.toString();
 		if (seen_pages.has(pattern)) {
 			const file = page.parts.pop().component.file;
 			const other_page = seen_pages.get(pattern);
 			const other_file = other_page.parts.pop().component.file;
 			throw new Error(`The ${other_file} and ${file} pages clash`);
 		}
 		seen_pages.set(pattern, page);
 	});
 	const seen_routes: Map<string, ServerRoute> = new Map();
 	server_routes.forEach(route => {
 		const pattern = route.pattern.toString();
 		if (seen_routes.has(pattern)) {
 			const other_route = seen_routes.get(pattern);
 			throw new Error(`The ${other_route.file} and ${route.file} routes clash`);
 		}
 		seen_routes.set(pattern, route);
 	});
 	return {
 		root,
 		components,
 		pages,
 		server_routes
 	};
 }
-function get_sub_parts(part: string) {
+type Part = {
-	return part.split(/[\[\]]/)
+	content: string;
-		.map((content, i) => {
+	dynamic: boolean;
-			if (!content) return null;
+	qualifier?: string;
 };
 function comparator(
 	a: { basename: string, parts: Part[], file: string, is_index: boolean },
 	b: { basename: string, parts: Part[], file: string, is_index: boolean }
 ) {
 	if (a.is_index !== b.is_index) return a.is_index ? -1 : 1;
 	const max = Math.max(a.parts.length, b.parts.length);
 	for (let i = 0; i < max; i += 1) {
 		const a_sub_part = a.parts[i];
 		const b_sub_part = b.parts[i];
 		if (!a_sub_part) return 1; // b is more specific, so goes first
 		if (!b_sub_part) return -1;
 		if (a_sub_part.dynamic !== b_sub_part.dynamic) {
 			return a_sub_part.dynamic ? 1 : -1;
 		}
 		if (!a_sub_part.dynamic && a_sub_part.content !== b_sub_part.content) {
 			return (
 				(b_sub_part.content.length - a_sub_part.content.length) ||
 				(a_sub_part.content < b_sub_part.content ? -1 : 1)
 			);
 		}
 		// If both parts dynamic, check for regexp patterns
 		if (a_sub_part.dynamic && b_sub_part.dynamic) {
 			const regexp_pattern = /\((.*?)\)/;
 			const a_match = regexp_pattern.exec(a_sub_part.content);
 			const b_match = regexp_pattern.exec(b_sub_part.content);
 			if (!a_match && b_match) {
 				return 1; // No regexp, so less specific than b
 			}
 			if (!b_match && a_match) {
 				return -1;
 			}
 			if (a_match && b_match && a_match[1] !== b_match[1]) {
 				return b_match[1].length - a_match[1].length;
 			}
 		}
 	}
 }
 function get_parts(part: string): Part[] {
 	return part.split(/\[(.+)\]/)
 		.map((str, i) => {
 			if (!str) return null;
 			const dynamic = i % 2 === 1;
 			const [, content, qualifier] = dynamic
 				? /([^(]+)(\(.+\))?$/.exec(str)
 				: [, str, null];
 			return {
 				content,
-				dynamic: i % 2 === 1
+				dynamic,
 				qualifier
 			};
 		})
 		.filter(Boolean);
 }
 function get_slug(file: string) {
 	return file
 		.replace(/[\\\/]index/, '')
 		.replace(/_default([\/\\index])?\.html$/, 'index')
 		.replace(/[\/\\]/g, '_')
 		.replace(/\.\w+$/, '')
 		.replace(/\[([^(]+)(?:\([^(]+\))?\]/, '$$$1')
 		.replace(/[^a-zA-Z0-9_$]/g, c => {
 			return c === '.' ? '_' : `$${c.charCodeAt(0)}`
 		});
 }
 function get_pattern(segments: Part[][]) {
 	return new RegExp(
 		`^` +
 		segments.map(segment => {
 			return '\\/' + segment.map(part => {
 				return part.dynamic
 					? part.qualifier || '([^\\/]+?)'
 					: encodeURI(part.content.normalize())
 						.replace(/\?/g, '%3F')
 						.replace(/#/g, '%23')
 						.replace(/%5B/g, '[')
 						.replace(/%5D/g, ']');
 			}).join('');
 		}).join('') +
 		'\\\/?$'
 	);
 }
--- a/src/interfaces.ts
+++ b/src/interfaces.ts
@@ -18,4 +18,25 @@ export type Template = {
 export type Store = {
 	get: () => any;
 };
 export type PageComponent = {
 	default?: boolean;
 	name: string;
 	file: string;
 };
 export type Page = {
 	pattern: RegExp;
 	parts: Array<{
 		component: PageComponent;
 		params: string[];
 	}>
 };
 export type ServerRoute = {
 	name: string;
 	pattern: RegExp;
 	file: string;
 	params: string[];
 };
--- a/src/middleware.ts
+++ b/src/middleware.ts
@@ -1,26 +1,39 @@
 import * as fs from 'fs';
 import * as path from 'path';
-import { resolve, URL } from 'url';
+import { URL } from 'url';
 import { ClientRequest, ServerResponse } from 'http';
 import cookie from 'cookie';
 import mkdirp from 'mkdirp';
 import rimraf from 'rimraf';
 import devalue from 'devalue';
 import fetch from 'node-fetch';
 import { lookup } from './middleware/mime';
 import { locations, dev } from './config';
 import { Route, Template } from './interfaces';
 import sourceMapSupport from 'source-map-support';
 import prettyBytes from 'pretty-bytes';
 import { wrap_data } from './middleware/wrap_data';
 import { list_unused_properties } from './middleware/list_unused_properties';
 sourceMapSupport.install();
-type RouteObject = {
+type ServerRoute = {
 	id: string;
 	type: 'page' | 'route';
 	pattern: RegExp;
 	handlers: Record<string, Handler>;
 	params: (match: RegExpMatchArray) => Record<string, string>;
-	module: Component;
+};
-	error?: string;
+
 type Page = {
 	pattern: RegExp;
 	parts: Array<{
 		name: string;
 		component: Component;
 		params?: (match: RegExpMatchArray) => Record<string, string>;
 	}>
 };
 type Manifest = {
 	server_routes: ServerRoute[];
 	pages: Page[];
 	root: Component;
 	error: Component;
 }
 type Handler = (req: Req, res: ServerResponse, next: () => void) => void;
@@ -29,6 +42,20 @@ type Store = {
 	get: () => any
 };
 type Props = {
 	path: string;
 	query: Record<string, string>;
 	params: Record<string, string>;
 	error?: { message: string };
 	status?: number;
 	child: {
 		segment: string;
 		component: Component;
 		props: Props;
 	};
 	[key: string]: any;
 };
 interface Req extends ClientRequest {
 	url: string;
 	baseUrl: string;
@@ -36,6 +63,7 @@ interface Req extends ClientRequest {
 	method: string;
 	path: string;
 	params: Record<string, string>;
 	query: Record<string, string>;
 	headers: Record<string, string>;
 }
@@ -48,27 +76,60 @@ interface Component {
 	preload: (data: any) => any | Promise<any>
 }
-export default function middleware({ App, routes, store }: {
+const IGNORE = '__SAPPER__IGNORE__';
-	App: Component,
+function toIgnore(uri: string, val: any) {
-	routes: RouteObject[],
+	if (Array.isArray(val)) return val.some(x => toIgnore(uri, x));
-	store: (req: Req) => Store
+	if (val instanceof RegExp) return val.test(uri);
 	if (typeof val === 'function') return val(uri);
 	return uri.startsWith(val.charCodeAt(0) === 47 ? val : `/${val}`);
 }
 export default function middleware(opts: {
 	manifest: Manifest,
 	store: (req: Req) => Store,
 	ignore?: any,
 	routes?: any // legacy
 }) {
-	if (!App) {
+	if (opts.routes) {
-		throw new Error(`As of 0.12, you must supply an App component to Sapper — see https://sapper.svelte.technology/guide#0-11-to-0-12 for more information`);
+		throw new Error(`As of Sapper 0.15, opts.routes should be opts.manifest`);
 	}
 	const output = locations.dest();
-	const client_assets = JSON.parse(fs.readFileSync(path.join(output, 'client_assets.json'), 'utf-8'));
+	const { manifest, store, ignore } = opts;
 	let emitted_basepath = false;
 	const middleware = compose_handlers([
 		ignore && ((req: Req, res: ServerResponse, next: () => void) => {
 			req[IGNORE] = toIgnore(req.path, ignore);
 			next();
 		}),
 		(req: Req, res: ServerResponse, next: () => void) => {
 			if (req[IGNORE]) return next();
 			if (req.baseUrl === undefined) {
-				req.baseUrl = req.originalUrl
+				let { originalUrl } = req;
-					? req.originalUrl.slice(0, -req.url.length)
+				if (req.url === '/' && originalUrl[originalUrl.length - 1] !== '/') {
 					originalUrl += '/';
 				}
 				req.baseUrl = originalUrl
 					? originalUrl.slice(0, -req.url.length)
 					: '';
 			}
 			if (!emitted_basepath && process.send) {
 				process.send({
 					__sapper__: true,
 					event: 'basepath',
 					basepath: req.baseUrl
 				});
 				emitted_basepath = true;
 			}
 			if (req.path === undefined) {
 				req.path = req.url.replace(/\?.*/, '');
 			}
@@ -96,7 +157,8 @@ export default function middleware({ App, routes, store }: {
 			cache_control: 'max-age=31536000'
 		}),
-		get_route_handler(client_assets, App, routes, store)
+		get_server_route_handler(manifest.server_routes),
 		get_page_handler(manifest, store)
 	].filter(Boolean));
 	return middleware;
@@ -120,6 +182,8 @@ function serve({ prefix, pathname, cache_control }: {
 		: (file: string) => (cache.has(file) ? cache : cache.set(file, fs.readFileSync(path.resolve(output, file)))).get(file)
 	return (req: Req, res: ServerResponse, next: () => void) => {
 		if (req[IGNORE]) return next();
 		if (filter(req)) {
 			const type = lookup(req.path);
@@ -139,292 +203,398 @@ function serve({ prefix, pathname, cache_control }: {
 	};
 }
-const resolved = Promise.resolve();
+function get_server_route_handler(routes: ServerRoute[]) {
-
+	function handle_route(route: ServerRoute, req: Req, res: ServerResponse, next: () => void) {
 function get_route_handler(chunks: Record<string, string>, App: Component, routes: RouteObject[], store_getter: (req: Req) => Store) {
 	const template = dev()
 		? () => fs.readFileSync(`${locations.app()}/template.html`, 'utf-8')
 		: (str => () => str)(fs.readFileSync(`${locations.dest()}/template.html`, 'utf-8'));
 	function handle_route(route: RouteObject, req: Req, res: ServerResponse) {
 		req.params = route.params(route.pattern.exec(req.path));
-		const handlers = route.handlers[Symbol.iterator]();
+		const method = req.method.toLowerCase();
 		// 'delete' cannot be exported from a module because it is a keyword,
 		// so check for 'del' instead
 		const method_export = method === 'delete' ? 'del' : method;
 		const handle_method = route.handlers[method_export];
 		if (handle_method) {
 			if (process.env.SAPPER_EXPORT) {
 				const { write, end, setHeader } = res;
 				const chunks: any[] = [];
 				const headers: Record<string, string> = {};
-		function next() {
+				// intercept data so that it can be exported
-			try {
+				res.write = function(chunk: any) {
-				const { value: handler, done } = handlers.next();
+					chunks.push(new Buffer(chunk));
 					write.apply(res, arguments);
 				};
-				if (done) {
+				res.setHeader = function(name: string, value: string) {
-					handle_error(req, res, 404, 'Not found');
+					headers[name.toLowerCase()] = value;
-					return;
+					setHeader.apply(res, arguments);
-				}
+				};
-				const mod = handler.module;
+				res.end = function(chunk?: any) {
 					if (chunk) chunks.push(new Buffer(chunk));
 					end.apply(res, arguments);
-				if (handler.type === 'page') {
+					process.send({
-					res.setHeader('Content-Type', 'text/html');
+						__sapper__: true,
-
+						event: 'file',
-					// preload main.js and current route
+						url: req.url,
-					// TODO detect other stuff we can preload? images, CSS, fonts?
+						method: req.method,
-					const link = []
+						status: res.statusCode,
-						.concat(chunks.main, chunks[route.id])
+						type: headers['content-type'],
-						.filter(file => !file.match(/\.map$/))
+						body: Buffer.concat(chunks).toString()
 						.map(file => `<${req.baseUrl}/client/${file}>;rel="preload";as="script"`)
 						.join(', ');
 					res.setHeader('Link', link);
 					const store = store_getter ? store_getter(req) : null;
 					const props = { params: req.params, query: req.query, path: req.path };
 					let redirect: { statusCode: number, location: string };
 					let error: { statusCode: number, message: Error | string };
 					Promise.resolve(
 						mod.preload ? mod.preload.call({
 							redirect: (statusCode: number, location: string) => {
 								redirect = { statusCode, location };
 							},
 							error: (statusCode: number, message: Error | string) => {
 								error = { statusCode, message };
 							},
 							fetch: (url: string, opts?: any) => {
 								const parsed = new URL(url, `http://127.0.0.1:${process.env.PORT}${req.baseUrl ? req.baseUrl + '/'  :''}`);
 								if (opts) {
 									opts = Object.assign({}, opts);
 									const include_cookies = (
 										opts.credentials === 'include' ||
 										opts.credentials === 'same-origin' && parsed.origin === `http://127.0.0.1:${process.env.PORT}`
 									);
 									if (include_cookies) {
 										const cookies: Record<string, string> = {};
 										if (!opts.headers) opts.headers = {};
 										const str = []
 											.concat(
 												cookie.parse(req.headers.cookie || ''),
 												cookie.parse(opts.headers.cookie || ''),
 												cookie.parse(res.getHeader('Set-Cookie') || '')
 											)
 											.map(cookie => {
 												return Object.keys(cookie)
 													.map(name => `${name}=${encodeURIComponent(cookie[name])}`)
 													.join('; ');
 											})
 											.filter(Boolean)
 											.join(', ');
 										opts.headers.cookie = str;
 									}
 								}
 								return fetch(parsed.href, opts);
 							},
 						store
 						}, req) : {}
 					).catch(err => {
 						error = { statusCode: 500, message: err };
 					}).then(preloaded => {
 						if (redirect) {
 							res.statusCode = redirect.statusCode;
 							res.setHeader('Location', `${req.baseUrl}/${redirect.location}`);
 							res.end();
 							return;
 						}
 						if (error) {
 							handle_error(req, res, error.statusCode, error.message);
 							return;
 						}
 						const serialized = {
 							preloaded: mod.preload && try_serialize(preloaded),
 							store: store && try_serialize(store.get())
 						};
 						Object.assign(props, preloaded);
 						const { html, head, css } = App.render({ Page: mod, props }, {
 							store
 						});
 						let scripts = []
 							.concat(chunks.main) // chunks main might be an array. it might not! thanks, webpack
 							.filter(file => !file.match(/\.map$/))
 							.map(file => `<script src='${req.baseUrl}/client/${file}'></script>`)
 							.join('');
 						let inline_script = `__SAPPER__={${[
 							`baseUrl: "${req.baseUrl}"`,
 							serialized.preloaded && `preloaded: ${serialized.preloaded}`,
 							serialized.store && `store: ${serialized.store}`
 						].filter(Boolean).join(',')}};`;
 						const has_service_worker = fs.existsSync(path.join(locations.dest(), 'service-worker.js'));
 						if (has_service_worker) {
 							inline_script += `if ('serviceWorker' in navigator) navigator.serviceWorker.register('${req.baseUrl}/service-worker.js');`;
 						}
 						const page = template()
 							.replace('%sapper.base%', `<base href="${req.baseUrl}/">`)
 							.replace('%sapper.scripts%', `<script>${inline_script}</script>${scripts}`)
 							.replace('%sapper.html%', html)
 							.replace('%sapper.head%', `<noscript id='sapper-head-start'></noscript>${head}<noscript id='sapper-head-end'></noscript>`)
 							.replace('%sapper.styles%', (css && css.code ? `<style>${css.code}</style>` : ''));
 						res.end(page);
 						if (process.send) {
 							process.send({
 								__sapper__: true,
 								url: req.url,
 								method: req.method,
 								status: 200,
 								type: 'text/html',
 								body: page
 							});
 						}
 					});
 				};
 			}
 			const handle_next = (err?: Error) => {
 				if (err) {
 					res.statusCode = 500;
 					res.end(err.message);
 				} else {
 					process.nextTick(next);
 				}
 			};
-				else {
+			try {
-					const method = req.method.toLowerCase();
+				handle_method(req, res, handle_next);
-					// 'delete' cannot be exported from a module because it is a keyword,
+			} catch (err) {
-					// so check for 'del' instead
+				handle_next(err);
-					const method_export = method === 'delete' ? 'del' : method;
+			}
-					const handle_method = mod[method_export];
+		} else {
-					if (handle_method) {
+			// no matching handler for method
-						if (process.env.SAPPER_EXPORT) {
+			process.nextTick(next);
-							const { write, end, setHeader } = res;
+		}
-							const chunks: any[] = [];
+	}
 							const headers: Record<string, string> = {};
-							// intercept data so that it can be exported
+	return function find_route(req: Req, res: ServerResponse, next: () => void) {
-							res.write = function(chunk: any) {
+		if (req[IGNORE]) return next();
 								chunks.push(new Buffer(chunk));
 								write.apply(res, arguments);
 							};
-							res.setHeader = function(name: string, value: string) {
+		for (const route of routes) {
-								headers[name.toLowerCase()] = value;
+			if (route.pattern.test(req.path)) {
-								setHeader.apply(res, arguments);
+				handle_route(route, req, res, next);
-							};
+				return;
 							res.end = function(chunk?: any) {
 								if (chunk) chunks.push(new Buffer(chunk));
 								end.apply(res, arguments);
 								process.send({
 									__sapper__: true,
 									url: req.url,
 									method: req.method,
 									status: res.statusCode,
 									type: headers['content-type'],
 									body: Buffer.concat(chunks).toString()
 								});
 							};
 						}
 						const handle_bad_result = (err?: Error) => {
 							if (err) {
 								console.error(err.stack);
 								res.statusCode = 500;
 								res.end(err.message);
 							} else {
 								process.nextTick(next);
 							}
 						};
 						try {
 							handle_method(req, res, handle_bad_result);
 						} catch (err) {
 							handle_bad_result(err);
 						}
 					} else {
 						// no matching handler for method
 						process.nextTick(next);
 					}
 				}
 			} catch (error) {
 				handle_error(req, res, 500, error);
 			}
 		}
 		next();
 	};
 }
 function get_page_handler(manifest: Manifest, store_getter: (req: Req) => Store) {
 	const output = locations.dest();
 	const get_chunks = dev()
 		? () => JSON.parse(fs.readFileSync(path.join(output, 'client_assets.json'), 'utf-8'))
 		: (assets => () => assets)(JSON.parse(fs.readFileSync(path.join(output, 'client_assets.json'), 'utf-8')));
 	const template = dev()
 		? () => fs.readFileSync(`${locations.app()}/template.html`, 'utf-8')
 		: (str => () => str)(fs.readFileSync(`${locations.dest()}/template.html`, 'utf-8'));
 	const { server_routes, pages } = manifest;
 	const error_route = manifest.error;
 	const should_wrap_data = dev() || process.env.SAPPER_EXPORT;
 	function handle_error(req: Req, res: ServerResponse, statusCode: number, error: Error | string) {
 		handle_page({
 			pattern: null,
 			parts: [
 				{ name: null, component: error_route }
 			]
 		}, req, res, statusCode, error);
 	}
-	const not_found_route = routes.find((route: RouteObject) => route.error === '4xx');
+	function handle_page(page: Page, req: Req, res: ServerResponse, status = 200, error: Error | string = null) {
-	const error_route = routes.find((route: RouteObject) => route.error === '5xx');
+		const get_params = page.parts[page.parts.length - 1].params || (() => ({}));
 		const match = error ? null : page.pattern.exec(req.path);
 		const chunks: Record<string, string | string[]> = get_chunks();
 	function handle_error(req: Req, res: ServerResponse, statusCode: number, message: Error | string) {
 		res.statusCode = statusCode;
 		res.setHeader('Content-Type', 'text/html');
-		const error = message instanceof Error ? message : new Error(message);
+		// preload main.js and current route
 		// TODO detect other stuff we can preload? images, CSS, fonts?
 		let preloaded_chunks = Array.isArray(chunks.main) ? chunks.main : [chunks.main];
 		if (!error) {
 			page.parts.forEach(part => {
 				if (!part) return;
-		const not_found = statusCode >= 400 && statusCode < 500;
+				// using concat because it could be a string or an array. thanks webpack!
-
+				preloaded_chunks = preloaded_chunks.concat(chunks[part.name]);
-		const route = not_found
+			});
 			? not_found_route
 			: error_route;
 		function render_page({ head, css, html }) {
 			const page = template()
 				.replace('%sapper.base%', `<base href="${req.baseUrl}/">`)
 				.replace('%sapper.scripts%', `<script>__SAPPER__={baseUrl: "${req.baseUrl}"}</script><script src='${req.baseUrl}/client/${chunks.main}'></script>`)
 				.replace('%sapper.html%', html)
 				.replace('%sapper.head%', `<noscript id='sapper-head-start'></noscript>${head}<noscript id='sapper-head-end'></noscript>`)
 				.replace('%sapper.styles%', (css && css.code ? `<style>${css.code}</style>` : ''));
 			res.end(page);
 		}
-		function handle_notfound() {
+		const link = preloaded_chunks
-			const title: string = not_found
+			.filter(file => !file.match(/\.map$/))
-				? 'Not found'
+			.map(file => `<${req.baseUrl}/client/${file}>;rel="preload";as="script"`)
-				: `Internal server error: ${error.message}`;
+			.join(', ');
-			render_page({ head: '', css: null, html: title });
+		res.setHeader('Link', link);
 		}
-		if (route) {
+		const store = store_getter ? store_getter(req) : null;
 			const handlers = route.handlers[Symbol.iterator]();
-			function next() {
+		let redirect: { statusCode: number, location: string };
-				const { value: handler, done } = handlers.next();
+		let preload_error: { statusCode: number, message: Error | string };
-				if (done) {
+		const preload_context = {
-					handle_notfound();
+			redirect: (statusCode: number, location: string) => {
-				} else if (handler.type === 'page') {
+				if (redirect && (redirect.statusCode !== statusCode || redirect.location !== location)) {
-					render_page(handler.module.render({
+					throw new Error(`Conflicting redirects`);
-						status: statusCode,
+				}
-						error
+				redirect = { statusCode, location };
-					}, {
+			},
-						store: store_getter && store_getter(req)
+			error: (statusCode: number, message: Error | string) => {
-					}));
+				preload_error = { statusCode, message };
-				} else {
+			},
-					const handle_method = mod[method_export];
+			fetch: (url: string, opts?: any) => {
-					if (handle_method) {
+				const parsed = new URL(url, `http://127.0.0.1:${process.env.PORT}${req.baseUrl ? req.baseUrl + '/' :''}`);
-						handle_method(req, res, next);
+
-					} else {
+				if (opts) {
-						next();
+					opts = Object.assign({}, opts);
 					const include_cookies = (
 						opts.credentials === 'include' ||
 						opts.credentials === 'same-origin' && parsed.origin === `http://127.0.0.1:${process.env.PORT}`
 					);
 					if (include_cookies) {
 						const cookies: Record<string, string> = {};
 						if (!opts.headers) opts.headers = {};
 						const str = []
 							.concat(
 								cookie.parse(req.headers.cookie || ''),
 								cookie.parse(opts.headers.cookie || ''),
 								cookie.parse(res.getHeader('Set-Cookie') || '')
 							)
 							.map(cookie => {
 								return Object.keys(cookie)
 									.map(name => `${name}=${encodeURIComponent(cookie[name])}`)
 									.join('; ');
 							})
 							.filter(Boolean)
 							.join(', ');
 						opts.headers.cookie = str;
 					}
 				}
 				return fetch(parsed.href, opts);
 			},
 			store
 		};
 		const root_preloaded = manifest.root.preload
 			? manifest.root.preload.call(preload_context, {
 				path: req.path,
 				query: req.query,
 				params: {}
 			})
 			: {};
 		Promise.all([root_preloaded].concat(page.parts.map(part => {
 			if (!part) return null;
 			return part.component.preload
 				? part.component.preload.call(preload_context, {
 					path: req.path,
 					query: req.query,
 					params: part.params ? part.params(match) : {}
 				})
 				: {};
 		}))).catch(err => {
 			preload_error = { statusCode: 500, message: err };
 			return []; // appease TypeScript
 		}).then(preloaded => {
 			if (redirect) {
 				const location = `${req.baseUrl}/${redirect.location}`;
 				res.statusCode = redirect.statusCode;
 				res.setHeader('Location', location);
 				res.end();
 				if (process.send) {
 					process.send({
 						__sapper__: true,
 						event: 'file',
 						url: req.url,
 						method: req.method,
 						status: redirect.statusCode,
 						type: 'text/html',
 						body: `<script>window.location.href = "${location}"</script>`
 					});
 				}
 				return;
 			}
 			if (preload_error) {
 				handle_error(req, res, preload_error.statusCode, preload_error.message);
 				return;
 			}
 			const segments = req.path.split('/').filter(Boolean);
 			const props: Props = {
 				path: req.path,
 				query: req.query,
 				params: {},
 				child: null
 			};
 			if (error) {
 				props.error = error instanceof Error ? error : { message: error };
 				props.status = status;
 			}
 			const data = Object.assign({}, props, preloaded[0], {
 				params: {},
 				child: {
 					segment: segments[0]
 				}
 			});
 			// in dev and export modes, we wrap data in proxies to see
 			// how much of it is used in the initial render
 			const wrapped = should_wrap_data && wrap_data(preloaded);
 			// this is an easy way to 'reify' top-level values
 			const _preloaded = should_wrap_data
 				? wrapped.data.map((x: any) => x)
 				: preloaded;
 			let level = data.child;
 			for (let i = 0; i < page.parts.length; i += 1) {
 				const part = page.parts[i];
 				if (!part) continue;
 				const get_params = part.params || (() => ({}));
 				Object.assign(level, {
 					component: part.component,
 					props: Object.assign({}, props, {
 						params: get_params(match)
 					}, _preloaded[i + 1])
 				});
 				level.props.child = <Props["child"]>{
 					segment: segments[i + 1]
 				};
 				level = level.props.child;
 			}
 			const { html, head, css } = manifest.root.render(data, {
 				store
 			});
 			let scripts = []
 				.concat(chunks.main) // chunks main might be an array. it might not! thanks, webpack
 				.filter(file => !file.match(/\.map$/))
 				.map(file => `<script src='${req.baseUrl}/client/${file}'></script>`)
 				.join('');
 			const unwrapped = should_wrap_data && wrapped.unwrap();
 			const preloaded_serialized = preloaded.map(try_serialize);
 			if (should_wrap_data && process.send) {
 				const discrepancies = [];
 				unwrapped.forEach((clone, i) => {
 					const loaded = preloaded_serialized[i];
 					if (!loaded) return;
 					const rendered = try_serialize(clone);
 					if (rendered !== loaded) {
 						const part = page.parts[i - 1];
 						const file = part ? part.file : '_layout.html';
 						discrepancies.push({
 							file,
 							preloaded: loaded.length,
 							rendered: rendered.length,
 							props: list_unused_properties(preloaded[i], clone)
 						});
 					}
 				});
 				if (discrepancies.length) {
 					process.send({
 						__sapper__: true,
 						event: 'unused_data',
 						url: req.url,
 						discrepancies
 					});
 				}
 			}
-			next();
+			const serialized = {
-		} else {
+				preloaded: `[${preloaded_serialized.join(',')}]`,
-			handle_notfound();
+				store: store && try_serialize(store.get())
-		}
+			};
 			let inline_script = `__SAPPER__={${[
 				error && `error:1`,
 				`baseUrl:"${req.baseUrl}"`,
 				serialized.preloaded && `preloaded:${serialized.preloaded}`,
 				serialized.store && `store:${serialized.store}`
 			].filter(Boolean).join(',')}};`;
 			const has_service_worker = fs.existsSync(path.join(locations.dest(), 'service-worker.js'));
 			if (has_service_worker) {
 				inline_script += `if ('serviceWorker' in navigator) navigator.serviceWorker.register('${req.baseUrl}/service-worker.js');`;
 			}
 			const body = template()
 				.replace('%sapper.base%', () => `<base href="${req.baseUrl}/">`)
 				.replace('%sapper.scripts%', () => `<script>${inline_script}</script>${scripts}`)
 				.replace('%sapper.html%', () => html)
 				.replace('%sapper.head%', () => `<noscript id='sapper-head-start'></noscript>${head}<noscript id='sapper-head-end'></noscript>`)
 				.replace('%sapper.styles%', () => (css && css.code ? `<style>${css.code}</style>` : ''));
 			res.statusCode = status;
 			res.end(body);
 			if (process.send) {
 				process.send({
 					__sapper__: true,
 					event: 'preload',
 					url: req.url,
 					size: serialized.preloaded.length
 				});
 				process.send({
 					__sapper__: true,
 					event: 'file',
 					url: req.url,
 					method: req.method,
 					status,
 					type: 'text/html',
 					body
 				});
 			}
 		}).catch(err => {
 			if (error) {
 				// we encountered an error while rendering the error page — oops
 				res.statusCode = 500;
 				res.end(`<pre>${escape_html(err.message)}</pre>`);
 			} else {
 				handle_error(req, res, 500, err);
 			}
 		});
 	}
-	return function find_route(req: Req, res: ServerResponse) {
+	return function find_route(req: Req, res: ServerResponse, next: () => void) {
-		for (const route of routes) {
+		if (req[IGNORE]) return next();
-			if (!route.error && route.pattern.test(req.path)) return handle_route(route, req, res);
+
 		if (!server_routes.some(route => route.pattern.test(req.path))) {
 			for (const page of pages) {
 				if (page.pattern.test(req.path)) {
 					handle_page(page, req, res);
 					return;
 				}
 			}
 		}
 		handle_error(req, res, 404, 'Not found');
@@ -451,10 +621,6 @@ function compose_handlers(handlers: Handler[]) {
 	};
 }
 function read_json(file: string) {
 	return JSON.parse(fs.readFileSync(file, 'utf-8'));
 }
 function try_serialize(data: any) {
 	try {
 		return devalue(data);
@@ -462,3 +628,15 @@ function try_serialize(data: any) {
 		return null;
 	}
 }
 function escape_html(html: string) {
 	const chars: Record<string, string> = {
 		'"' : 'quot',
 		"'": '#39',
 		'&': 'amp',
 		'<' : 'lt',
 		'>' : 'gt'
 	};
 	return html.replace(/["'&<>]/g, c => `&${chars[c]};`);
 }
--- a/src/middleware/list_unused_properties.ts
+++ b/src/middleware/list_unused_properties.ts
@@ -0,0 +1,34 @@
 export function list_unused_properties(all: any, used: any) {
 	const props: string[] = [];
 	const seen = new Set();
 	function walk(keypath: string, a: any, b: any) {
 		if (seen.has(a)) return;
 		seen.add(a);
 		if (!a || typeof a !== 'object') return;
 		const is_array = Array.isArray(a);
 		for (const key in a) {
 			const child_keypath = keypath
 				? is_array ? `${keypath}[${key}]` : `${keypath}.${key}`
 				: key;
 			if (hasProp.call(b, key)) {
 				const a_child = a[key];
 				const b_child = b[key];
 				walk(child_keypath, a_child, b_child);
 			} else {
 				props.push(child_keypath);
 			}
 		}
 	}
 	walk(null, all, used);
 	return props;
 }
 const hasProp = Object.prototype.hasOwnProperty;
--- a/src/middleware/wrap_data.ts
+++ b/src/middleware/wrap_data.ts
@@ -0,0 +1,85 @@
 type Obj = Record<string, any>;
 export function wrap_data(data: any) {
 	const proxies = new Map();
 	const clones = new Map();
 	const handler = {
 		get(target: any, property: string): any {
 			const value = target[property];
 			const intercepted = intercept(value);
 			const target_clone = clones.get(target);
 			const child_clone = clones.get(value);
 			if (target_clone && target.hasOwnProperty(property)) {
 				target_clone[property] = child_clone || value;
 			}
 			return intercepted;
 		},
 	};
 	function get_or_create_proxy(obj: any) {
 		if (!proxies.has(obj)) {
 			proxies.set(obj, new Proxy(obj, handler));
 		}
 		return proxies.get(obj);
 	}
 	function intercept(obj: any) {
 		if (clones.has(obj)) return obj;
 		if (obj && typeof obj === 'object') {
 			if (Array.isArray(obj)) {
 				clones.set(obj, []);
 				return get_or_create_proxy(obj);
 			}
 			else if (isPlainObject(obj)) {
 				clones.set(obj, {});
 				return get_or_create_proxy(obj);
 			}
 		}
 		clones.set(obj, obj);
 		return obj;
 	}
 	return {
 		data: intercept(data),
 		unwrap: () => {
 			return clones.get(data);
 		}
 	};
 }
 const objectProtoOwnPropertyNames = Object.getOwnPropertyNames(Object.prototype).sort().join('\0')
 function isPlainObject(obj: any) {
 	const proto = Object.getPrototypeOf(obj);
 	if (
 		proto !== Object.prototype &&
 		proto !== null &&
 		Object.getOwnPropertyNames(proto).sort().join('\0') !== objectProtoOwnPropertyNames
 	) {
 		return false;
 	}
 	if (Object.getOwnPropertySymbols(obj).length > 0) {
 		return false;
 	}
 	return true;
 }
 function pick(obj: Obj, props: string[]) {
 	const picked: Obj = {};
 	props.forEach(prop => {
 		picked[prop] = obj[prop];
 	});
 	return picked;
 }
--- a/src/runtime/index.ts
+++ b/src/runtime/index.ts
@@ -1,14 +1,39 @@
 import { detach, findAnchor, scroll_state, which } from './utils';
-import { Component, ComponentConstructor, Params, Query, Route, RouteData, ScrollPosition, Store, Target } from './interfaces';
+import { Component, ComponentConstructor, Params, Query, Redirect, Manifest, RouteData, ScrollPosition, Store, Target } from './interfaces';
-const manifest = typeof window !== 'undefined' && window.__SAPPER__;
+const initial_data = typeof window !== 'undefined' && window.__SAPPER__;
-export let App: ComponentConstructor;
+export let root: Component;
 export let component: Component;
 let target: Node;
 let store: Store;
-let routes: Route[];
+let manifest: Manifest;
-let errors: { '4xx': Route, '5xx': Route };
+let segments: string[] = [];
 type RootProps = {
 	path: string;
 	params: Record<string, string>;
 	query: Record<string, string>;
 	child: Child;
 };
 type Child = {
 	segment?: string;
 	props?: any;
 	component?: Component;
 };
 const root_props: RootProps = {
 	path: null,
 	params: null,
 	query: null,
 	child: {
 		segment: null,
 		component: null,
 		props: {}
 	}
 };
 export { root as component }; // legacy reasons — drop in a future version
 const history = typeof window !== 'undefined' ? window.history : {
 	pushState: (state: any, title: string, href: string) => {},
@@ -26,42 +51,50 @@ if ('scrollRestoration' in history) {
 function select_route(url: URL): Target {
 	if (url.origin !== window.location.origin) return null;
-	if (!url.pathname.startsWith(manifest.baseUrl)) return null;
+	if (!url.pathname.startsWith(initial_data.baseUrl)) return null;
-	const path = url.pathname.slice(manifest.baseUrl.length);
+	const path = url.pathname.slice(initial_data.baseUrl.length);
-	for (const route of routes) {
+	// avoid accidental clashes between server routes and pages
-		const match = route.pattern.exec(path);
+	if (manifest.ignore.some(pattern => pattern.test(path))) return;
 	for (let i = 0; i < manifest.pages.length; i += 1) {
 		const page = manifest.pages[i];
 		const match = page.pattern.exec(path);
 		if (match) {
 			if (route.ignore) return null;
 			const params = route.params(match);
 			const query: Record<string, string | true> = {};
 			if (url.search.length > 0) {
 				url.search.slice(1).split('&').forEach(searchParam => {
 					const [, key, value] = /([^=]+)=(.*)/.exec(searchParam);
 					query[key] = value || true;
-				})
+				});
 			}
-			return { url, route, props: { params, query, path } };
+			return { url, path, page, match, query };
 		}
 	}
 }
 let current_token: {};
-function render(Page: ComponentConstructor, props: any, scroll: ScrollPosition, token: {}) {
+function render(data: any, nullable_depth: number, scroll: ScrollPosition, token: {}) {
 	if (current_token !== token) return;
-	const data = {
+	if (root) {
-		Page,
+		// first, clear out highest-level root component
-		props,
+		let level = data.child;
-		preloading: false
+		for (let i = 0; i < nullable_depth; i += 1) {
-	};
+			if (i === nullable_depth) break;
 			level = level.props.child;
 		}
-	if (component) {
+		const { component } = level;
-		component.set(data);
+		level.component = null;
 		root.set({ child: data.child });
 		// then render new stuff
 		level.component = component;
 		root.set(data);
 	} else {
 		// first load — remove SSR'd <head> contents
 		const start = document.querySelector('#sapper-head-start');
@@ -73,7 +106,9 @@ function render(Page: ComponentConstructor, props: any, scroll: ScrollPosition,
 			detach(end);
 		}
-		component = new App({
+		Object.assign(data, root_data);
 		root = new manifest.root({
 			target,
 			data,
 			store,
@@ -84,56 +119,159 @@ function render(Page: ComponentConstructor, props: any, scroll: ScrollPosition,
 	if (scroll) {
 		window.scrollTo(scroll.x, scroll.y);
 	}
 	Object.assign(root_props, data);
 	ready = true;
 }
-function prepare_route(Page: ComponentConstructor, props: RouteData) {
+function changed(a: Record<string, string | true>, b: Record<string, string | true>) {
-	let redirect: { statusCode: number, location: string } = null;
+	return JSON.stringify(a) !== JSON.stringify(b);
 }
 let root_preload: Promise<any>;
 let root_data: any;
 function prepare_page(target: Target): Promise<{
 	redirect?: Redirect;
 	data?: any;
 	nullable_depth?: number;
 }> {
 	if (root) {
 		root.set({ preloading: true });
 	}
 	const { page, path, query } = target;
 	const new_segments = path.split('/').filter(Boolean);
 	let changed_from = 0;
 	while (
 		segments[changed_from] &&
 		new_segments[changed_from] &&
 		segments[changed_from] === new_segments[changed_from]
 	) changed_from += 1;
 	let redirect: Redirect = null;
 	let error: { statusCode: number, message: Error | string } = null;
-	if (!Page.preload) {
+	const preload_context = {
 		return { Page, props, redirect, error };
 	}
 	if (!component && manifest.preloaded) {
 		return { Page, props: Object.assign(props, manifest.preloaded), redirect, error };
 	}
 	if (component) {
 		component.set({
 			preloading: true
 		});
 	}
 	return Promise.resolve(Page.preload.call({
 		store,
 		fetch: (url: string, opts?: any) => window.fetch(url, opts),
 		redirect: (statusCode: number, location: string) => {
 			if (redirect && (redirect.statusCode !== statusCode || redirect.location !== location)) {
 				throw new Error(`Conflicting redirects`);
 			}
 			redirect = { statusCode, location };
 		},
 		error: (statusCode: number, message: Error | string) => {
 			error = { statusCode, message };
 		}
-	}, props)).catch(err => {
+	};
 		error = { statusCode: 500, message: err };
 	}).then(preloaded => {
 		if (error) {
 			const route = error.statusCode >= 400 && error.statusCode < 500
 				? errors['4xx']
 				: errors['5xx'];
-			return route.load().then(({ default: Page }: { default: ComponentConstructor }) => {
+	if (!root_preload) {
-				const err = error.message instanceof Error ? error.message : new Error(error.message);
+		root_preload = manifest.root.preload
-				Object.assign(props, { status: error.statusCode, error: err });
+			? initial_data.preloaded[0] || manifest.root.preload.call(preload_context, {
-				return { Page, props, redirect: null };
+				path,
-			});
+				query,
 				params: {}
 			})
 			: {};
 	}
 	return Promise.all(page.parts.map(async (part, i) => {
 		if (i < changed_from) return null;
 		if (!part) return null;
 		const { default: Component } = await part.component();
 		const req = {
 			path,
 			query,
 			params: part.params ? part.params(target.match) : {}
 		};
 		const preloaded = ready || !initial_data.preloaded[i + 1]
 			? Component.preload ? await Component.preload.call(preload_context, req) : {}
 			: initial_data.preloaded[i + 1];
 		return { Component, preloaded };
 	})).catch(err => {
 		error = { statusCode: 500, message: err };
 		return [];
 	}).then(async results => {
 		if (!root_data) root_data = await root_preload;
 		if (redirect) {
 			return { redirect };
 		}
-		Object.assign(props, preloaded)
+		segments = new_segments;
-		return { Page, props, redirect };
+
 		const get_params = page.parts[page.parts.length - 1].params || (() => ({}));
 		const params = get_params(target.match);
 		if (error) {
 			const props = {
 				path,
 				query,
 				params,
 				error: typeof error.message === 'string' ? new Error(error.message) : error.message,
 				status: error.statusCode
 			};
 			return {
 				data: Object.assign({}, props, {
 					preloading: false,
 					child: {
 						component: manifest.error,
 						props
 					}
 				})
 			};
 		}
 		const props = { path, query };
 		const data = {
 			path,
 			preloading: false,
 			child: Object.assign({}, root_props.child, {
 				segment: segments[0]
 			})
 		};
 		if (changed(query, root_props.query)) data.query = query;
 		if (changed(params, root_props.params)) data.params = params;
 		let level = data.child;
 		let nullable_depth = 0;
 		for (let i = 0; i < page.parts.length; i += 1) {
 			const part = page.parts[i];
 			if (!part) continue;
 			const get_params = part.params || (() => ({}));
 			if (i < changed_from) {
 				level.props.path = path;
 				level.props.query = query;
 				level.props.child = Object.assign({}, level.props.child);
 				nullable_depth += 1;
 			} else {
 				level.component = results[i].Component;
 				level.props = Object.assign({}, level.props, props, {
 					params: get_params(target.match),
 				}, results[i].preloaded);
 				level.props.child = {};
 			}
 			level = level.props.child;
 			level.segment = segments[i + 1];
 		}
 		return { data, nullable_depth };
 	});
 }
-function navigate(target: Target, id: number) {
+async function navigate(target: Target, id: number): Promise<any> {
 	if (id) {
 		// popstate or initial navigation
 		cid = id;
@@ -149,19 +287,19 @@ function navigate(target: Target, id: number) {
 	const loaded = prefetching && prefetching.href === target.url.href ?
 		prefetching.promise :
-		target.route.load().then(mod => prepare_route(mod.default, target.props));
+		prepare_page(target);
 	prefetching = null;
 	const token = current_token = {};
 	const { redirect, data, nullable_depth } = await loaded;
-	return loaded.then(({ Page, props, redirect }) => {
+	if (redirect) {
-		if (redirect) {
+		await goto(redirect.location, { replaceState: true });
-			return goto(redirect.location, { replaceState: true });
+	} else {
-		}
+		render(data, nullable_depth, scroll_history[id], token);
-
+		if (document.activeElement) document.activeElement.blur();
-		render(Page, props, scroll_history[id], token);
+	}
 	});
 }
 function handle_click(event: MouseEvent) {
@@ -211,7 +349,11 @@ function handle_popstate(event: PopStateEvent) {
 	if (event.state) {
 		const url = new URL(window.location.href);
 		const target = select_route(url);
-		navigate(target, event.state.id);
+		if (target) {
 			navigate(target, event.state.id);
 		} else {
 			window.location.href = window.location.href;
 		}
 	} else {
 		// hashchange
 		cid = ++uid;
@@ -221,16 +363,16 @@ function handle_popstate(event: PopStateEvent) {
 let prefetching: {
 	href: string;
-	promise: Promise<{ Page: ComponentConstructor, props: any }>;
+	promise: Promise<{ redirect?: Redirect, data?: any, nullable_depth?: number }>;
 } = null;
 export function prefetch(href: string) {
-	const selected = select_route(new URL(href, document.baseURI));
+	const target: Target = select_route(new URL(href, document.baseURI));
-	if (selected && (!prefetching || href !== prefetching.href)) {
+	if (target && (!prefetching || href !== prefetching.href)) {
 		prefetching = {
 			href,
-			promise: selected.route.load().then(mod => prepare_route(mod.default, selected.props))
+			promise: prepare_page(target)
 		};
 	}
 }
@@ -252,22 +394,28 @@ function trigger_prefetch(event: MouseEvent | TouchEvent) {
 }
 let inited: boolean;
 let ready = false;
-export function init(opts: { App: ComponentConstructor, target: Node, routes: Route[], store?: (data: any) => Store }) {
+export function init(opts: {
 	App: ComponentConstructor,
 	target: Node,
 	manifest: Manifest,
 	store?: (data: any) => Store,
 	routes?: any // legacy
 }) {
 	if (opts instanceof HTMLElement) {
 		throw new Error(`The signature of init(...) has changed — see https://sapper.svelte.technology/guide#0-11-to-0-12 for more information`);
 	}
-	App = opts.App;
+	if (opts.routes) {
 		throw new Error(`As of Sapper 0.15, opts.routes should be opts.manifest`);
 	}
 	target = opts.target;
-	routes = opts.routes.filter(r => !r.error);
+	manifest = opts.manifest;
 	errors = {
 		'4xx': opts.routes.find(r => r.error === '4xx'),
 		'5xx': opts.routes.find(r => r.error === '5xx')
 	};
 	if (opts && opts.store) {
-		store = opts.store(manifest.store);
+		store = opts.store(initial_data.store);
 	}
 	if (!inited) { // this check makes HMR possible
@@ -291,33 +439,35 @@ export function init(opts: { App: ComponentConstructor, target: Node, routes: Ro
 		history.replaceState({ id: uid }, '', href);
-		const target = select_route(new URL(window.location.href));
+		if (!initial_data.error) {
-		return navigate(target, uid);
+			const target = select_route(new URL(window.location.href));
 			if (target) return navigate(target, uid);
 		}
 	});
 }
 export function goto(href: string, opts = { replaceState: false }) {
 	const target = select_route(new URL(href, document.baseURI));
 	let promise;
 	if (target) {
-		navigate(target, null);
+		promise = navigate(target, null);
 		if (history) history[opts.replaceState ? 'replaceState' : 'pushState']({ id: cid }, '', href);
 	} else {
 		window.location.href = href;
 		promise = new Promise(f => {}); // never resolves
 	}
 	return promise;
 }
 export function prefetchRoutes(pathnames: string[]) {
-	if (!routes) throw new Error(`You must call init() first`);
+	if (!manifest) throw new Error(`You must call init() first`);
-	return routes
+	return manifest.pages
 		.filter(route => {
 			if (!pathnames) return true;
-			return pathnames.some(pathname => {
+			return pathnames.some(pathname => route.pattern.test(pathname));
 				return route.error
 					? route.error === pathname
 					: route.pattern.test(pathname)
 			});
 		})
 		.reduce((promise: Promise<any>, route) => {
 			return promise.then(route.load);
--- a/src/runtime/interfaces.ts
+++ b/src/runtime/interfaces.ts
@@ -11,15 +11,23 @@ export interface ComponentConstructor {
 };
 export interface Component {
 	set: (data: any) => void;
 	destroy: () => void;
 }
-export type Route = {
+export type Page = {
 	pattern: RegExp;
-	load: () => Promise<{ default: ComponentConstructor }>;
+	parts: Array<{
-	error?: string;
+		component: () => Promise<{ default: ComponentConstructor }>;
-	params?: (match: RegExpExecArray) => Record<string, string>;
+		params?: (match: RegExpExecArray) => Record<string, string>;
-	ignore?: boolean;
+	}>;
 };
 export type Manifest = {
 	ignore: RegExp[];
 	root: ComponentConstructor;
 	error: () => Promise<{ default: ComponentConstructor }>;
 	pages: Page[]
 };
 export type ScrollPosition = {
@@ -29,6 +37,13 @@ export type ScrollPosition = {
 export type Target = {
 	url: URL;
-	route: Route;
+	path: string;
-	props: RouteData;
+	page: Page;
 	match: RegExpExecArray;
 	query: Record<string, string | true>;
 };
 export type Redirect = {
 	statusCode: number;
 	location: string;
 };
--- a/test/app/app/App.html
+++ b/test/app/app/App.html
@@ -1,6 +0,0 @@
 {#if preloading}
 	<progress class='preloading-progress' value=0.5/>
 {/if}
 <svelte:component this={Page} {...props}/>
--- a/test/app/app/client.js
+++ b/test/app/app/client.js
@@ -1,13 +1,11 @@
 import { init, prefetchRoutes } from '../../../runtime.js';
 import { Store } from 'svelte/store.js';
-import { routes } from './manifest/client.js';
+import { manifest } from './manifest/client.js';
 import App from './App.html';
 window.init = () => {
 	return init({
 		target: document.querySelector('#sapper'),
-		App,
+		manifest,
 		routes,
 		store: data => new Store(data)
 	});
 };
--- a/test/app/app/server.js
+++ b/test/app/app/server.js
@@ -4,8 +4,7 @@ import express from 'express';
 import serve from 'serve-static';
 import sapper from '../../../dist/middleware.ts.js';
 import { Store } from 'svelte/store.js';
-import { routes } from './manifest/server.js';
+import { manifest } from './manifest/server.js';
 import App from './App.html'
 let pending;
 let ended;
@@ -87,14 +86,19 @@ const middlewares = [
 	},
 	sapper({
-		App,
+		manifest,
 		routes,
 		store: () => {
 			return new Store({
 				title: 'Stored title'
 			});
-		}
+		},
-	})
+		ignore: [
 			/foobar/i,
 			'/buzz',
 			'fizz',
 			x => x === '/hello'
 		]
 	}),
 ];
 if (BASEPATH) {
@@ -103,4 +107,8 @@ if (BASEPATH) {
 	app.use(...middlewares);
 }
-app.listen(PORT);
+['foobar', 'buzz', 'fizzer', 'hello'].forEach(uri => {
 	app.get('/'+uri, (req, res) => res.end(uri));
 });
 app.listen(PORT);
--- a/test/app/routes/5xx.html
+++ b/test/app/routes/5xx.html
@@ -1,6 +0,0 @@
 <svelte:head>
 	<title>Internal server error</title>
 </svelte:head>
 <h1>Internal server error</h1>
 <p>{error.message}</p>
--- a/test/app/routes/[x]/[y]/[z].html
+++ b/test/app/routes/[x]/[y]/[z].html
@@ -0,0 +1,20 @@
 <span>z: {segment} {count}</span>
 <a href="foo/bar/qux"></a>
 <script>
 	import counts from '../_counts.js';
 	export default {
 		preload() {
 			return {
 				count: counts.z += 1
 			};
 		},
 		oncreate() {
 			this.set({
 				segment: this.get().params.z
 			});
 		}
 	};
 </script>
--- a/test/app/routes/[x]/[y]/_layout.html
+++ b/test/app/routes/[x]/[y]/_layout.html
@@ -0,0 +1,22 @@
 <span>y: {segment} {count}</span>
 <svelte:component this={child.component} {...child.props}/>
 <span>child segment: {child.segment}</span>
 <script>
 	import counts from '../_counts.js';
 	export default {
 		preload() {
 			return {
 				count: counts.y += 1
 			};
 		},
 		oncreate() {
 			this.set({
 				segment: this.get().params.y
 			});
 		}
 	};
 </script>
--- a/test/app/routes/[x]/_counts.js
+++ b/test/app/routes/[x]/_counts.js
@@ -0,0 +1,5 @@
 export default {
 	x: process.browser ? 1 : 0,
 	y: process.browser ? 1 : 0,
 	z: process.browser ? 1 : 0
 };
--- a/test/app/routes/_error.html
+++ b/test/app/routes/_error.html
@@ -2,5 +2,5 @@
 	<title>{status}</title>
 </svelte:head>
-<h1>Not found</h1>
+<h1>{status}</h1>
 <p>{error.message}</p>
--- a/test/app/routes/_layout.html
+++ b/test/app/routes/_layout.html
@@ -0,0 +1,15 @@
 {#if preloading}
 	<progress class='preloading-progress' value=0.5/>
 {/if}
 <svelte:component this={child.component} {rootPreloadFunctionRan} {...child.props}/>
 <script>
 	export default {
 		preload() {
 			return {
 				rootPreloadFunctionRan: true
 			};
 		}
 	};
 </script>
--- a/test/app/routes/about.html
+++ b/test/app/routes/about.html
@@ -6,15 +6,21 @@
 <p>This is the 'about' page. There's not much here.</p>
 <button class='goto' on:click='goto("blog/what-is-sapper")'>What is Sapper?</button>
 <button class='prefetch' on:click='prefetch("blog/why-the-name")'>Why the name?</button>
 <script>
 	import { goto, prefetch } from '../../../runtime.js';
 	export default {
 		oncreate() {
 			window.goto = goto;
 		},
 		ondestroy() {
 			window.goto = null;
 		},
 		methods: {
 			goto,
 			prefetch
 		}
 	};
--- a/test/app/routes/blog/index.json.js
+++ b/test/app/routes/blog/index.json.js
@@ -1,4 +1,4 @@
-import posts from './blog/_posts.js';
+import posts from './_posts.js';
 const contents = JSON.stringify(posts.map(post => {
 	return {
--- a/test/app/routes/missing-index/ok.html
+++ b/test/app/routes/missing-index/ok.html
@@ -0,0 +1 @@
 <h1>it works</h1>
--- a/test/app/routes/preload-root/index.html
+++ b/test/app/routes/preload-root/index.html
@@ -0,0 +1 @@
 <h1>root preload function ran: {rootPreloadFunctionRan}</h1>
--- a/test/app/routes/preload-values/index.html
+++ b/test/app/routes/preload-values/index.html
@@ -0,0 +1 @@
 <svelte:component this={child.component} {...child.props}/>
--- a/test/app/routes/show-url.html
+++ b/test/app/routes/show-url.html
@@ -1,9 +0,0 @@
 <p>URL is {url}</p>
 <script>
 	export default {
 		preload({ url }) {
 			if (url) return { url };
 		}
 	};
 </script>
--- a/test/app/routes/unsafe-replacement.html
+++ b/test/app/routes/unsafe-replacement.html
@@ -0,0 +1,9 @@
 $&
 <script>
 	export default {
 		preload() {
 			return '$&';
 		}
 	};
 </script>
--- a/test/common/test.js
+++ b/test/common/test.js
@@ -32,6 +32,8 @@ Nightmare.action('prefetchRoutes', function(done) {
 const cli = path.resolve(__dirname, '../../sapper');
 const wait = ms => new Promise(f => setTimeout(f, ms));
 describe('sapper', function() {
 	process.chdir(path.resolve(__dirname, '../app'));
@@ -41,7 +43,7 @@ describe('sapper', function() {
 	rimraf.sync('.sapper');
 	rimraf.sync('start.js');
-	this.timeout(process.env.CI ? 30000 : 10000);
+	this.timeout(process.env.CI ? 30000 : 15000);
 	// TODO reinstate dev tests
 	// run({
@@ -97,13 +99,12 @@ describe('sapper', function() {
 			];
 			// Client scripts that should show up in the extraction directory.
 			const expectedClientRegexes = [
 				/client\/[^/]+\/_(\.\d+)?\.js/,
 				/client\/[^/]+\/about(\.\d+)?\.js/,
 				/client\/[^/]+\/blog_\$slug\$(\.\d+)?\.js/,
 				/client\/[^/]+\/blog(\.\d+)?\.js/,
 				/client\/[^/]+\/main(\.\d+)?\.js/,
-				/client\/[^/]+\/show_url(\.\d+)?\.js/,
+				/client\/[^/]+\/index(\.\d+)?\.js/,
-				/client\/[^/]+\/slow_preload(\.\d+)?\.js/,
+				/client\/[^/]+\/about(\.\d+)?\.js/,
 				/client\/[^/]+\/blog_\$slug(\.\d+)?\.js/,
 				/client\/[^/]+\/blog(\.\d+)?\.js/,
 				/client\/[^/]+\/slow\$45preload(\.\d+)?\.js/,
 			];
 			const allPages = walkSync(dest);
@@ -133,6 +134,7 @@ function run({ mode, basepath = '' }) {
 		let capture;
 		let base;
 		let captured_basepath;
 		const nightmare = new Nightmare();
@@ -179,7 +181,13 @@ function run({ mode, basepath = '' }) {
 				let handler;
 				proc.on('message', message => {
-					if (message.__sapper__) return;
+					if (message.__sapper__) {
 						if (message.event === 'basepath') {
 							captured_basepath = basepath;
 						}
 						return;
 					}
 					if (handler) handler(message);
 				});
@@ -259,8 +267,9 @@ function run({ mode, basepath = '' }) {
 					})
 					.then(requests => {
 						assert.deepEqual(requests.map(r => r.url), []);
 						return nightmare.path();
 					})
 					.then(() => wait(100))
 					.then(() => nightmare.path())
 					.then(path => {
 						assert.equal(path, `${basepath}/about`);
 						return nightmare.title();
@@ -274,9 +283,7 @@ function run({ mode, basepath = '' }) {
 				return nightmare
 					.goto(`${base}/about`)
 					.init()
-					.click('.goto')
+					.evaluate(() => window.goto('blog/what-is-sapper'))
 					.wait(url => window.location.pathname === url, `${basepath}/blog/what-is-sapper`)
 					.wait(100)
 					.title()
 					.then(title => {
 						assert.equal(title, 'What is Sapper?');
@@ -362,16 +369,6 @@ function run({ mode, basepath = '' }) {
 					});
 			});
 			it('passes entire request object to preload', () => {
 				return nightmare
 					.goto(`${base}/show-url`)
 					.init()
 					.evaluate(() => document.querySelector('p').innerHTML)
 					.then(html => {
 						assert.equal(html, `URL is /show-url`);
 					});
 			});
 			it('calls a delete handler', () => {
 				return nightmare
 					.goto(`${base}/delete-test`)
@@ -434,7 +431,7 @@ function run({ mode, basepath = '' }) {
 					})
 					.then(() => nightmare.page.title())
 					.then(title => {
-						assert.equal(title, 'Not found')
+						assert.equal(title, '404')
 					});
 			});
@@ -449,7 +446,7 @@ function run({ mode, basepath = '' }) {
 					})
 					.then(() => nightmare.page.title())
 					.then(title => {
-						assert.equal(title, 'Not found');
+						assert.equal(title, '404');
 					});
 			});
@@ -461,7 +458,7 @@ function run({ mode, basepath = '' }) {
 					})
 					.then(() => nightmare.page.title())
 					.then(title => {
-						assert.equal(title, 'Internal server error')
+						assert.equal(title, '500')
 					});
 			});
@@ -476,10 +473,46 @@ function run({ mode, basepath = '' }) {
 					})
 					.then(() => nightmare.page.title())
 					.then(title => {
-						assert.equal(title, 'Internal server error');
+						assert.equal(title, '500');
 					});
 			});
 			// Ignores are meant for top-level escape.
 			// ~> Sapper **should** own the entire {basepath} when designated.
 			if (!basepath) {
 				it('respects `options.ignore` values (RegExp)', () => {
 					return nightmare.goto(`${base}/foobar`)
 						.evaluate(() => document.documentElement.textContent)
 						.then(text => {
 							assert.equal(text, 'foobar');
 						});
 				});
 				it('respects `options.ignore` values (String #1)', () => {
 					return nightmare.goto(`${base}/buzz`)
 						.evaluate(() => document.documentElement.textContent)
 						.then(text => {
 							assert.equal(text, 'buzz');
 						});
 				});
 				it('respects `options.ignore` values (String #2)', () => {
 					return nightmare.goto(`${base}/fizzer`)
 						.evaluate(() => document.documentElement.textContent)
 						.then(text => {
 							assert.equal(text, 'fizzer');
 						});
 				});
 				it('respects `options.ignore` values (Function)', () => {
 					return nightmare.goto(`${base}/hello`)
 						.evaluate(() => document.documentElement.textContent)
 						.then(text => {
 							assert.equal(text, 'hello');
 						});
 				});
 			}
 			it('does not attempt client-side navigation to server routes', () => {
 				return nightmare.goto(`${base}/blog/how-is-sapper-different-from-next`)
 					.init()
@@ -597,6 +630,76 @@ function run({ mode, basepath = '' }) {
 						assert.ok(!hasProgressIndicator);
 					});
 			});
 			it('emits a basepath', () => {
 				assert.equal(captured_basepath, basepath);
 			});
 			// skipped because Nightmare doesn't seem to focus the <a> correctly
 			it.skip('resets the active element after navigation', () => {
 				return nightmare
 					.goto(base)
 					.init()
 					.click('a[href="about"]')
 					.wait(100)
 					.evaluate(() => document.activeElement.nodeName)
 					.then(name => {
 						assert.equal(name, 'BODY');
 					});
 			});
 			it('replaces %sapper.xxx% tags safely', () => {
 				return nightmare
 					.goto(`${base}/unsafe-replacement`)
 					.init()
 					.page.html()
 					.then(html => {
 						assert.equal(html.indexOf('%sapper'), -1);
 					});
 			});
 			it('only recreates components when necessary', () => {
 				return nightmare
 					.goto(`${base}/foo/bar/baz`)
 					.init()
 					.evaluate(() => document.querySelector('#sapper').textContent)
 					.then(text => {
 						assert.deepEqual(text.split('\n').filter(Boolean), [
 							'y: bar 1',
 							'z: baz 1',
 							'child segment: baz'
 						]);
 						return nightmare.click(`a`)
 							.then(() => wait(100))
 							.then(() => {
 								return nightmare.evaluate(() => document.querySelector('#sapper').textContent);
 							});
 					})
 					.then(text => {
 						assert.deepEqual(text.split('\n').filter(Boolean), [
 							'y: bar 1',
 							'z: qux 2',
 							'child segment: qux'
 						]);
 					});
 			});
 			it('uses a fallback index component if none is provided', () => {
 				return nightmare.goto(`${base}/missing-index/ok`)
 					.page.title()
 					.then(title => {
 						assert.equal(title, 'it works');
 					});
 			});
 			it('runs preload in root component', () => {
 				return nightmare.goto(`${base}/preload-root`)
 					.page.title()
 					.then(title => {
 						assert.equal(title, 'root preload function ran: true');
 					});
 			});
 		});
 		describe('headers', () => {
@@ -609,7 +712,7 @@ function run({ mode, basepath = '' }) {
 						'text/html'
 					);
-					const str = ['main', '_\\.\\d+']
+					const str = ['main', '.+?\\.\\d+']
 						.map(file => {
 							return `<${basepath}/client/[^/]+/${file}\\.js>;rel="preload";as="script"`;
 						})
--- a/test/unit/create_routes.test.js
+++ b/test/unit/create_routes.test.js
@@ -1,287 +0,0 @@
 const assert = require('assert');
 const { create_routes } = require('../../dist/core.ts.js');
 describe('create_routes', () => {
 	it('sorts handlers correctly', () => {
 		const routes = create_routes({
 			files: ['foo.html', 'foo.js']
 		});
 		assert.deepEqual(
 			routes.map(r => r.handlers),
 			[
 				[
 					{
 						type: 'route',
 						file: 'foo.js'
 					},
 					{
 						type: 'page',
 						file: 'foo.html'
 					}
 				]
 			]
 		)
 	});
 	it('encodes characters not allowed in path', () => {
 		const routes = create_routes({
 			files: [
 				'"',
 				'#',
 				'?'
 			]
 		});
 		assert.deepEqual(
 			routes.map(r => r.pattern),
 			[
 				/^\/%22\/?$/,
 				/^\/%23\/?$/,
 				/^\/%3F\/?$/
 			]
 		);
 	});
 	it('sorts routes correctly', () => {
 		const routes = create_routes({
 			files: ['index.html', 'about.html', 'post/f[xx].html', '[wildcard].html', 'post/foo.html', 'post/[id].html', 'post/bar.html', 'post/[id].json.js']
 		});
 		assert.deepEqual(
 			routes.map(r => r.handlers[0].file),
 			[
 				'index.html',
 				'about.html',
 				'post/bar.html',
 				'post/foo.html',
 				'post/f[xx].html',
 				'post/[id].json.js',
 				'post/[id].html',
 				'[wildcard].html'
 			]
 		);
 	});
 	it('prefers index page to nested route', () => {
 		let routes = create_routes({
 			files: [
 				'api/examples/[slug].js',
 				'api/examples/index.js',
 				'blog/[slug].html',
 				'api/gists/[id].js',
 				'api/gists/index.js',
 				'4xx.html',
 				'5xx.html',
 				'blog/index.html',
 				'blog/rss.xml.js',
 				'guide/index.html',
 				'index.html'
 			]
 		});
 		assert.deepEqual(
 			routes.map(r => r.handlers[0].file),
 			[
 				'4xx.html',
 				'5xx.html',
 				'index.html',
 				'guide/index.html',
 				'blog/index.html',
 				'blog/rss.xml.js',
 				'blog/[slug].html',
 				'api/examples/index.js',
 				'api/examples/[slug].js',
 				'api/gists/index.js',
 				'api/gists/[id].js',
 			]
 		);
 		routes = create_routes({
 			files: [
 				'4xx.html',
 				'5xx.html',
 				'api/blog/[slug].js',
 				'api/blog/index.js',
 				'api/guide/contents.js',
 				'api/guide/index.js',
 				'blog/[slug].html',
 				'blog/index.html',
 				'blog/rss.xml.js',
 				'gist/[id].js',
 				'gist/create.js',
 				'guide/index.html',
 				'index.html',
 				'repl/index.html'
 			]
 		});
 		assert.deepEqual(
 			routes.map(r => r.handlers[0].file),
 			[
 				'4xx.html',
 				'5xx.html',
 				'index.html',
 				'guide/index.html',
 				'blog/index.html',
 				'blog/rss.xml.js',
 				'blog/[slug].html',
 				'gist/create.js',
 				'gist/[id].js',
 				'repl/index.html',
 				'api/guide/index.js',
 				'api/guide/contents.js',
 				'api/blog/index.js',
 				'api/blog/[slug].js',
 			]
 		);
 	});
 	it('generates params', () => {
 		const routes = create_routes({
 			files: ['index.html', 'about.html', '[wildcard].html', 'post/[id].html']
 		});
 		let file;
 		let params;
 		for (let i = 0; i < routes.length; i += 1) {
 			const route = routes[i];
 			if (params = route.exec('/post/123')) {
 				file = route.handlers[0].file;
 				break;
 			}
 		}
 		assert.equal(file, 'post/[id].html');
 		assert.deepEqual(params, {
 			id: '123'
 		});
 	});
 	it('ignores files and directories with leading underscores', () => {
 		const routes = create_routes({
 			files: ['index.html', '_foo.html', 'a/_b/c/d.html', 'e/f/g/h.html', 'i/_j.html']
 		});
 		assert.deepEqual(
 			routes.map(r => r.handlers[0].file),
 			[
 				'index.html',
 				'e/f/g/h.html'
 			]
 		);
 	});
 	it('ignores files and directories with leading dots except .well-known', () => {
 		const routes = create_routes({
 			files: ['.well-known', '.unknown']
 		});
 		assert.deepEqual(
 			routes.map(r => r.handlers[0].file),
 			['.well-known']
 		);
 	});
 	it('matches /foo/:bar before /:baz/qux', () => {
 		const a = create_routes({
 			files: ['foo/[bar].html', '[baz]/qux.html']
 		});
 		const b = create_routes({
 			files: ['[baz]/qux.html', 'foo/[bar].html']
 		});
 		assert.deepEqual(
 			a.map(r => r.handlers[0].file),
 			['foo/[bar].html', '[baz]/qux.html']
 		);
 		assert.deepEqual(
 			b.map(r => r.handlers[0].file),
 			['foo/[bar].html', '[baz]/qux.html']
 		);
 	});
 	it('fails if routes are indistinguishable', () => {
 		assert.throws(() => {
 			create_routes({
 				files: ['[foo].html', '[bar]/index.html']
 			});
 		}, /The \[foo\] and \[bar\]\/index routes clash/);
 	});
 	it('matches nested routes', () => {
 		const route = create_routes({
 			files: ['settings/[submenu].html']
 		})[0];
 		assert.deepEqual(route.exec('/settings/foo'), {
 			submenu: 'foo'
 		});
 		assert.deepEqual(route.exec('/settings'), {
 			submenu: null
 		});
 	});
 	it('prefers index routes to nested routes', () => {
 		const routes = create_routes({
 			files: ['settings/[submenu].html', 'settings.html']
 		});
 		assert.deepEqual(
 			routes.map(r => r.handlers[0].file),
 			['settings.html', 'settings/[submenu].html']
 		);
 	});
 	it('matches deeply nested routes', () => {
 		const route = create_routes({
 			files: ['settings/[a]/[b]/index.html']
 		})[0];
 		assert.deepEqual(route.exec('/settings/foo/bar'), {
 			a: 'foo',
 			b: 'bar'
 		});
 		assert.deepEqual(route.exec('/settings/foo'), {
 			a: 'foo',
 			b: null
 		});
 		assert.deepEqual(route.exec('/settings'), {
 			a: null,
 			b: null
 		});
 	});
 	it('matches a dynamic part within a part', () => {
 		const route = create_routes({
 			files: ['things/[slug].json.js']
 		})[0];
 		assert.deepEqual(route.exec('/things/foo.json'), {
 			slug: 'foo'
 		});
 	});
 	it('matches multiple dynamic parts within a part', () => {
 		const route = create_routes({
 			files: ['things/[id]_[slug].json.js']
 		})[0];
 		assert.deepEqual(route.exec('/things/someid_someslug.json'), {
 			id: 'someid',
 			slug: 'someslug'
 		});
 	});
 	it('fails if dynamic params are not separated', () => {
 		assert.throws(() => {
 			create_routes({
 				files: ['[foo][bar].js']
 			});
 		}, /Invalid route \[foo\]\[bar\]\.js — parameters must be separated/);
 	});
 });
--- a/test/unit/create_routes/index.js
+++ b/test/unit/create_routes/index.js
@@ -0,0 +1,157 @@
 const path = require('path');
 const assert = require('assert');
 const { create_routes } = require('../../../dist/core.ts.js');
 describe('create_routes', () => {
 	it('creates routes', () => {
 		const { components, pages, server_routes } = create_routes(path.join(__dirname, 'samples/basic'));
 		const index = { name: 'index', file: 'index.html' };
 		const about = { name: 'about', file: 'about.html' };
 		const blog = { name: 'blog', file: 'blog/index.html' };
 		const blog_$slug = { name: 'blog_$slug', file: 'blog/[slug].html' };
 		assert.deepEqual(components, [
 			index,
 			about,
 			blog,
 			blog_$slug
 		]);
 		assert.deepEqual(pages, [
 			{
 				pattern: /^\/?$/,
 				parts: [
 					{ component: index, params: [] }
 				]
 			},
 			{
 				pattern: /^\/about\/?$/,
 				parts: [
 					{ component: about, params: [] }
 				]
 			},
 			{
 				pattern: /^\/blog\/?$/,
 				parts: [
 					null,
 					{ component: blog, params: [] }
 				]
 			},
 			{
 				pattern: /^\/blog\/([^\/]+?)\/?$/,
 				parts: [
 					null,
 					{ component: blog_$slug, params: ['slug'] }
 				]
 			}
 		]);
 		assert.deepEqual(server_routes, [
 			{
 				name: 'route_blog_json',
 				pattern: /^\/blog.json\/?$/,
 				file: 'blog/index.json.js',
 				params: []
 			},
 			{
 				name: 'route_blog_$slug_json',
 				pattern: /^\/blog\/([^\/]+?).json\/?$/,
 				file: 'blog/[slug].json.js',
 				params: ['slug']
 			}
 		]);
 	});
 	it('encodes invalid characters', () => {
 		const { components, pages } = create_routes(path.join(__dirname, 'samples/encoding'));
 		// had to remove ? and " because windows
 		// const quote = { name: '$34', file: '".html' };
 		const hash = { name: '$35', file: '#.html' };
 		// const question_mark = { name: '$63', file: '?.html' };
 		assert.deepEqual(components, [
 			// quote,
 			hash,
 			// question_mark
 		]);
 		assert.deepEqual(pages.map(p => p.pattern), [
 			// /^\/%22\/?$/,
 			/^\/%23\/?$/,
 			// /^\/%3F\/?$/
 		]);
 	});
 	it('allows regex qualifiers', () => {
 		const { pages } = create_routes(path.join(__dirname, 'samples/qualifiers'));
 		assert.deepEqual(pages.map(p => p.pattern), [
 			/^\/([0-9-a-z]{3,})\/?$/,
 			/^\/([a-z]{2})\/?$/,
 			/^\/([^\/]+?)\/?$/
 		]);
 	});
 	it('sorts routes correctly', () => {
 		const { pages } = create_routes(path.join(__dirname, 'samples/sorting'));
 		assert.deepEqual(pages.map(p => p.parts.map(part => part && part.component.file)), [
 			['index.html'],
 			['about.html'],
 			[null, 'post/index.html'],
 			[null, 'post/bar.html'],
 			[null, 'post/foo.html'],
 			[null, 'post/f[xx].html'],
 			[null, 'post/[id([0-9-a-z]{3,})].html'],
 			[null, 'post/[id].html'],
 			['[wildcard].html']
 		]);
 	});
 	it('ignores files and directories with leading underscores', () => {
 		const { server_routes } = create_routes(path.join(__dirname, 'samples/hidden-underscore'));
 		assert.deepEqual(server_routes.map(r => r.file), [
 			'index.js',
 			'e/f/g/h.js'
 		]);
 	});
 	it('ignores files and directories with leading dots except .well-known', () => {
 		const { server_routes } = create_routes(path.join(__dirname, 'samples/hidden-dot'));
 		assert.deepEqual(server_routes.map(r => r.file), [
 			'.well-known/dnt-policy.txt.js'
 		]);
 	});
 	it('fails on clashes', () => {
 		assert.throws(() => {
 			const { pages } = create_routes(path.join(__dirname, 'samples/clash-pages'));
 		}, /The \[bar\]\/index\.html and \[foo\]\.html pages clash/);
 		assert.throws(() => {
 			const { server_routes } = create_routes(path.join(__dirname, 'samples/clash-routes'));
 			console.log(server_routes);
 		}, /The \[bar\]\/index\.js and \[foo\]\.js routes clash/);
 	});
 	it('fails if dynamic params are not separated', () => {
 		assert.throws(() => {
 			create_routes(path.join(__dirname, 'samples/invalid-params'));
 		}, /Invalid route \[foo\]\[bar\]\.js — parameters must be separated/);
 	});
 	it('errors when trying to use reserved characters in route regexp', () => {
 		assert.throws(() => {
 			create_routes(path.join(__dirname, 'samples/invalid-qualifier'));
 		}, /Invalid route \[foo\(\[a-z\]\(\[0-9\]\)\)\].js — cannot use \(, \), \? or \: in route qualifiers/);
 	});
 });
--- a/test/unit/create_routes/samples/basic/about.html
+++ b/test/unit/create_routes/samples/basic/about.html
--- a/test/unit/create_routes/samples/basic/blog/[slug].html
+++ b/test/unit/create_routes/samples/basic/blog/[slug].html
--- a/test/unit/create_routes/samples/basic/blog/[slug].json.js
+++ b/test/unit/create_routes/samples/basic/blog/[slug].json.js
--- a/test/unit/create_routes/samples/basic/blog/_default.html
+++ b/test/unit/create_routes/samples/basic/blog/_default.html
--- a/test/unit/create_routes/samples/basic/blog/index.html
+++ b/test/unit/create_routes/samples/basic/blog/index.html
--- a/test/unit/create_routes/samples/basic/blog/index.json.js
+++ b/test/unit/create_routes/samples/basic/blog/index.json.js
--- a/test/unit/create_routes/samples/basic/index.html
+++ b/test/unit/create_routes/samples/basic/index.html
--- a/test/unit/create_routes/samples/clash-pages/[bar]/index.html
+++ b/test/unit/create_routes/samples/clash-pages/[bar]/index.html
--- a/test/unit/create_routes/samples/clash-pages/[foo].html
+++ b/test/unit/create_routes/samples/clash-pages/[foo].html
--- a/test/unit/create_routes/samples/clash-pages/index.html
+++ b/test/unit/create_routes/samples/clash-pages/index.html
--- a/test/unit/create_routes/samples/clash-routes/[bar]/index.js
+++ b/test/unit/create_routes/samples/clash-routes/[bar]/index.js
--- a/test/unit/create_routes/samples/clash-routes/[foo].js
+++ b/test/unit/create_routes/samples/clash-routes/[foo].js
--- a/test/unit/create_routes/samples/clash-routes/index.html
+++ b/test/unit/create_routes/samples/clash-routes/index.html
--- a/test/unit/create_routes/samples/encoding/#.html
+++ b/test/unit/create_routes/samples/encoding/#.html
--- a/test/unit/create_routes/samples/hidden-dot/.unknown/foo.txt.js
+++ b/test/unit/create_routes/samples/hidden-dot/.unknown/foo.txt.js
--- a/test/unit/create_routes/samples/hidden-dot/.well-known/dnt-policy.txt.js
+++ b/test/unit/create_routes/samples/hidden-dot/.well-known/dnt-policy.txt.js
--- a/test/unit/create_routes/samples/hidden-underscore/_foo.js
+++ b/test/unit/create_routes/samples/hidden-underscore/_foo.js
--- a/test/unit/create_routes/samples/hidden-underscore/a/_b/c/d.js
+++ b/test/unit/create_routes/samples/hidden-underscore/a/_b/c/d.js
--- a/test/unit/create_routes/samples/hidden-underscore/e/f/g/h.js
+++ b/test/unit/create_routes/samples/hidden-underscore/e/f/g/h.js
--- a/test/unit/create_routes/samples/hidden-underscore/i/_j.js
+++ b/test/unit/create_routes/samples/hidden-underscore/i/_j.js
--- a/test/unit/create_routes/samples/hidden-underscore/index.html
+++ b/test/unit/create_routes/samples/hidden-underscore/index.html
--- a/test/unit/create_routes/samples/hidden-underscore/index.js
+++ b/test/unit/create_routes/samples/hidden-underscore/index.js
--- a/test/unit/create_routes/samples/invalid-params/[foo][bar].js
+++ b/test/unit/create_routes/samples/invalid-params/[foo][bar].js
--- a/test/unit/create_routes/samples/invalid-qualifier/[foo([a-z]([0-9]))].js
+++ b/test/unit/create_routes/samples/invalid-qualifier/[foo([a-z]([0-9]))].js
--- a/test/unit/create_routes/samples/qualifiers/[slug([0-9-a-z]{3,})].html
+++ b/test/unit/create_routes/samples/qualifiers/[slug([0-9-a-z]{3,})].html
--- a/test/unit/create_routes/samples/qualifiers/[slug([a-z]{2})].html
+++ b/test/unit/create_routes/samples/qualifiers/[slug([a-z]{2})].html
--- a/test/unit/create_routes/samples/qualifiers/[slug].html
+++ b/test/unit/create_routes/samples/qualifiers/[slug].html
--- a/test/unit/create_routes/samples/sorting/[wildcard].html
+++ b/test/unit/create_routes/samples/sorting/[wildcard].html
--- a/test/unit/create_routes/samples/sorting/_layout.html
+++ b/test/unit/create_routes/samples/sorting/_layout.html
--- a/test/unit/create_routes/samples/sorting/about.html
+++ b/test/unit/create_routes/samples/sorting/about.html
--- a/test/unit/create_routes/samples/sorting/index.html
+++ b/test/unit/create_routes/samples/sorting/index.html
--- a/test/unit/create_routes/samples/sorting/post/[id([0-9-a-z]{3,})].html
+++ b/test/unit/create_routes/samples/sorting/post/[id([0-9-a-z]{3,})].html
--- a/test/unit/create_routes/samples/sorting/post/[id].html
+++ b/test/unit/create_routes/samples/sorting/post/[id].html
--- a/test/unit/create_routes/samples/sorting/post/_default.html
+++ b/test/unit/create_routes/samples/sorting/post/_default.html
--- a/test/unit/create_routes/samples/sorting/post/bar.html
+++ b/test/unit/create_routes/samples/sorting/post/bar.html
--- a/test/unit/create_routes/samples/sorting/post/f[xx].html
+++ b/test/unit/create_routes/samples/sorting/post/f[xx].html
--- a/test/unit/create_routes/samples/sorting/post/foo.html
+++ b/test/unit/create_routes/samples/sorting/post/foo.html
--- a/test/unit/create_routes/samples/sorting/post/index.html
+++ b/test/unit/create_routes/samples/sorting/post/index.html
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,9 +6,9 @@
        "noEmitOnError": true,
        "allowJs": true,
        "lib": ["es5", "es6", "dom"],
-        "importHelpers": true
+        "importHelpers": true,
        "target": "ES5"
    },
    "target": "ES5",
    "include": [
        "src"
    ],
Author	SHA1	Message	Date
Rich Harris	2b799a3f1e	print warnings in dev mode for unused data	2018-08-03 01:14:26 -04:00
Rich Harris	18d15c0120	emit events for unused data, and only in dev/export mode	2018-08-03 01:14:08 -04:00
Rich Harris	b20e15721c	Merge branch 'master' into proxy-data	2018-08-03 00:15:26 -04:00
Rich Harris	de4f99807f	Merge branch 'master' of github.com:sveltejs/sapper	2018-08-03 00:11:09 -04:00
Rich Harris	eae8351f77	Better/faster exporting * add --build and --build-dir options to sapper export (#325) * tweak export logging, update port-authority to prevent timeout bug * better logging of export progress * handle case where linked resource is already fetched * default to .sapper/dev instead of .sapper * handle query params and redirects * dont write server_info.json either - second half of #318 * update changelog * update lockfile * try to track down ci test failures * err wut * curiouser and curiouser * ok, seems to work now	2018-08-03 00:10:58 -04:00
Rich Harris	d386308301	update changelog	2018-08-02 13:23:12 -04:00
Rich Harris	13afbc84d7	dont write server_info.json either - second half of #318	2018-08-02 10:59:23 -04:00
Rich Harris	31327b3780	Merge pull request #333 from sveltejs/gh-332 only blur activeElement if there is one	2018-08-02 10:43:27 -04:00
Rich Harris	81f483d7b8	Merge pull request #334 from sveltejs/gh-318 dont emit client_info.json	2018-08-02 08:40:30 -04:00
Rich Harris	1bcf20511b	dont emit client_info.json - fixes #318	2018-08-01 21:46:26 -04:00
Rich Harris	003fa8ab2c	only blur activeElement if there is one - fixes #332	2018-08-01 21:34:30 -04:00
Rich Harris	d1fcd07c92	-> v0.15.4	2018-08-01 08:47:41 -04:00
Rich Harris	47a6d6f662	Merge pull request #326 from lukeed/feat/ignore Add `ignore` option	2018-08-01 08:46:49 -04:00
Rich Harris	06cc22b10d	detect unused data on initial render	2018-07-31 23:21:34 -04:00
Luke Edwards	4b2b6440d0	fix: use more specific ignore pattern; ~> leaked into another test’s route	2018-07-31 16:54:29 -07:00
Rich Harris	fc855f30f8	-> v0.15.3	2018-07-31 15:06:47 -04:00
Rich Harris	4a75fff4ec	Merge pull request #329 from sveltejs/parallel-exports parallelize exports	2018-07-31 15:05:38 -04:00
Rich Harris	7b7b695938	Merge pull request #320 from sveltejs/gh-319 Some dev documentation	2018-07-31 14:59:57 -04:00
Rich Harris	2fca2e295f	Merge pull request #328 from sveltejs/export-no-minify-js don't minify JS when minifying HTML	2018-07-31 14:59:27 -04:00
Rich Harris	eae991d369	parallelize exports	2018-07-31 14:56:29 -04:00
Rich Harris	c2b393d3fd	dont minify JS when minifying HTML	2018-07-31 14:43:58 -04:00
Luke Edwards	566addd406	add tests for `opts.ignore`	2018-07-29 14:17:13 -07:00
Luke Edwards	3d77dacbd6	attach `ignore` options to test app, w/ matching routes	2018-07-29 14:17:04 -07:00
Luke Edwards	51b4f9cbbf	add `opts.ignore` support	2018-07-29 14:01:44 -07:00
Robert Hall	1d611be83e	Using npm	2018-07-25 15:50:56 -06:00
Robert Hall	1782904994	Some dev documentation	2018-07-25 10:10:22 -06:00
Rich Harris	e3ddbfc181	Merge pull request #314 from sveltejs/fix-child-segment fix child.segment bug	2018-07-23 17:08:25 -04:00
Rich Harris	8e3830b646	fix child.segment bug	2018-07-23 17:02:35 -04:00
Rich Harris	b28cdff233	-> v0.15.2	2018-07-23 16:38:49 -04:00
Rich Harris	7f586ff1a3	Merge pull request #313 from sveltejs/gh-312 Skip layout components where none is provided	2018-07-23 16:37:30 -04:00
Rich Harris	731d4f535c	skip layout components where none is provided - fixes #312	2018-07-23 16:31:00 -04:00
Rich Harris	f8c731ca21	failing tests for #312	2018-07-23 14:31:11 -04:00
Rich Harris	39eb3be01e	-> v0.15.1	2018-07-22 21:25:33 -04:00
Rich Harris	d0bb728e25	-> v0.15.0	2018-07-22 21:04:03 -04:00
Rich Harris	58de0f9c99	Nested routes Fixes #262	2018-07-22 21:00:37 -04:00
Rich Harris	b75ae7ba96	-> v0.14.2	2018-07-14 21:05:39 -04:00
Rich Harris	091e38082e	Merge pull request #307 from sveltejs/unsafe-replacements prevent unsafe replacements of preloaded data etc	2018-07-15 02:05:20 +01:00
Rich Harris	74acf93c7a	prevent unsafe replacements of preloaded data etc	2018-07-14 20:56:05 -04:00
Rich Harris	0e3775397f	Merge pull request #306 from sveltejs/refactor-route-generation Refactor route generation	2018-07-05 08:25:59 -04:00
Rich Harris	8dc52a04e4	split pages and server routes into separate arrays	2018-07-05 08:14:07 -04:00
Rich Harris	008b607c01	generate pages and server routes separately	2018-07-04 10:53:41 -04:00
Rich Harris	d01a407137	-> v0.14.1	2018-07-02 10:24:54 -04:00
Rich Harris	c0c717d9ec	Merge pull request #283 from elcobvg/feature/route-regexp Feature: use regexp in routes	2018-07-02 10:23:30 -04:00
Elco Brouwer von Gonzenbach	4f011bfc37	Convert whitespace to tabs. Add some unit tests for create routes	2018-07-02 11:52:17 +07:00
Elco Brouwer von Gonzenbach	6c4ab32cf0	Sync update to sapper 0.14.0	2018-06-29 06:57:01 +07:00
Rich Harris	09b4dc1b9a	-> v0.14.0	2018-06-28 13:35:21 -04:00
Rich Harris	bdd5a54527	Merge pull request #301 from sveltejs/gh-297 treat foo/index.json.js as foo.json.js	2018-06-28 13:27:57 -04:00
Rich Harris	b7bb4db8c1	treat foo/index.json.js as foo.json.js - fixes #297	2018-06-28 13:20:41 -04:00
Rich Harris	5b5f33d3cf	error on 4xx.html and 5xx.html	2018-06-28 12:57:59 -04:00
Rich Harris	9611656b76	Merge pull request #300 from sveltejs/gh-293 [WIP] simplify rendering of error pages	2018-06-28 12:52:41 -04:00
Rich Harris	e9a71774d5	Merge pull request #299 from sveltejs/gh-270 return a Promise from goto	2018-06-28 12:18:32 -04:00
Rich Harris	2205b8aec5	oops	2018-06-28 12:03:27 -04:00
Rich Harris	5c4e4d5d36	only navigate if route is found - fixes #279	2018-06-28 11:45:38 -04:00
Rich Harris	e87247493f	replace 4xx.html and 5xx.html with _error.html	2018-06-28 11:38:21 -04:00
Rich Harris	0aeb63a05b	simplify rendering of error pages	2018-06-27 18:35:41 -04:00
Rich Harris	57eeb5659a	return a Promise from goto - fixes #270	2018-06-27 17:32:20 -04:00
Rich Harris	f821c19528	-> v0.13.6	2018-06-27 17:20:45 -04:00
Rich Harris	b9a120164a	Merge pull request #298 from sveltejs/gh-296 fix req.baseUrl synthesis	2018-06-27 17:19:55 -04:00
Rich Harris	087356f781	fix req.baseUrl synthesis	2018-06-27 16:57:04 -04:00
Rich Harris	31110a5326	-> v0.13.5	2018-06-26 18:30:46 -04:00
Rich Harris	667a68768c	Merge pull request #294 from sveltejs/gh-289 fix handling of fatal errors	2018-06-26 18:29:56 -04:00
Rich Harris	5075981a90	fix handling of fatal errors - fixes #289	2018-06-26 13:49:11 -04:00
Rich Harris	611dc4f6be	-> v0.13.4	2018-06-18 22:45:51 -04:00
Rich Harris	0b43eaa992	blur active element on navigation - fixes #287	2018-06-18 22:44:55 -04:00
Rich Harris	47cdc1c4c8	wait until server restarts before emitting hot reload update	2018-06-18 22:31:10 -04:00
Rich Harris	31c071ad72	Merge branch 'master' of github.com:sveltejs/sapper	2018-06-18 12:22:42 -04:00
Rich Harris	e91edaee12	Merge pull request #286 from sveltejs/invalidate-client-assets always refresh client_assets in dev	2018-06-18 12:22:37 -04:00
Rich Harris	34c1fee5db	Merge branch 'master' of github.com:sveltejs/sapper	2018-06-17 13:02:13 -04:00
Rich Harris	5375422633	Merge pull request #285 from sveltejs/event-on-exit emit a fatal event if server crashes	2018-06-17 13:02:03 -04:00
Rich Harris	1dafe934b0	initialise rebuild stats	2018-06-17 13:01:51 -04:00
Rich Harris	e1a33c6a9b	always refresh client_assets in dev	2018-06-17 13:00:27 -04:00
Rich Harris	0800fa016b	emit a fatal event if server crashes	2018-06-16 20:18:32 -04:00
Rich Harris	8f3454c3b1	-> v0.13.3	2018-06-16 13:49:44 -04:00
Rich Harris	f0d7a1aaab	change fatal events to be clonable, for IPC purposes	2018-06-16 13:49:19 -04:00
Rich Harris	8240595d70	-> v0.13.2	2018-06-15 10:58:55 -04:00
Rich Harris	658d8dd50c	Merge pull request #284 from sveltejs/emit-basepath Emit basepath event	2018-06-15 10:57:04 -04:00
Rich Harris	9eeeaa24c1	emit a basepath event on first run	2018-06-14 17:20:46 -04:00
Rich Harris	9c4a3592ff	remove some unused code	2018-06-14 16:34:16 -04:00
Elco Brouwer von Gonzenbach	0e2c2ca101	Correct errors in param pattern and matching patterns	2018-06-13 10:00:39 +07:00
Elco Brouwer von Gonzenbach	8015be8069	Correct spacing	2018-06-12 09:15:54 +07:00
Elco Brouwer von Gonzenbach	e39ad59589	Add regexp option to routes	2018-06-12 09:11:54 +07:00
		`@@ -0,0 +1 @@`
							`<svelte:component this={child.component} {...child.props}/>`
		`@@ -0,0 +1 @@`
							`<h1>root preload function ran: {rootPreloadFunctionRan}</h1>`