Add support for custom route file extensions.

test/apps/custom-extension/rollup.config.js

@@ -0,0 +1,60 @@
+import resolve from 'rollup-plugin-node-resolve';
+import replace from 'rollup-plugin-replace';
+import svelte from 'rollup-plugin-svelte';
+
+const mode = process.env.NODE_ENV;
+const dev = mode === 'development';
+
+const config = require('../../../config/rollup.js');
+
+export default {
+	client: {
+		input: config.client.input(),
+		output: config.client.output(),
+		plugins: [
+			replace({
+				'process.browser': true,
+				'process.env.NODE_ENV': JSON.stringify(mode)
+			}),
+			svelte({
+				extensions: ['.whokilledthemuffinman', '.jesuslivesineveryone', '.mdx', '.svelte', '.html'],
+				dev,
+				hydratable: true,
+				emitCss: true
+			}),
+			resolve()
+		]
+	},
+
+	server: {
+		input: config.server.input(),
+		output: config.server.output(),
+		plugins: [
+			replace({
+				'process.browser': false,
+				'process.env.NODE_ENV': JSON.stringify(mode)
+			}),
+			svelte({
+				extensions: ['.whokilledthemuffinman', '.jesuslivesineveryone', '.mdx', '.svelte', '.html'],
+				generate: 'ssr',
+				dev
+			}),
+			resolve({
+				preferBuiltins: true
+			})
+		],
+		external: ['sirv', 'polka']
+	},
+
+	serviceworker: {
+		input: config.serviceworker.input(),
+		output: config.serviceworker.output(),
+		plugins: [
+			resolve(),
+			replace({
+				'process.browser': true,
+				'process.env.NODE_ENV': JSON.stringify(mode)
+			})
+		]
+	}
+};

test/apps/custom-extension/src/client.js

@@ -0,0 +1,9 @@
+import * as sapper from '@sapper/app';
+
+window.start = () => sapper.start({
+	target: document.querySelector('#sapper')
+});
+
+window.prefetchRoutes = () => sapper.prefetchRoutes();
+window.prefetch = href => sapper.prefetch(href);
+window.goto = href => sapper.goto(href);

test/apps/custom-extension/src/routes/[slug].mdx

@@ -0,0 +1,6 @@
+<script>
+	import { stores } from '@sapper/app';
+	const { page } = stores();
+</script>
+
+<h1>{$page.params.slug.toUpperCase()}</h1>

test/apps/custom-extension/src/routes/_error.svelte

@@ -0,0 +1,3 @@
+<h1>hi</h1>
+
+<p>hi</p>

test/apps/custom-extension/src/routes/a.svelte

@@ -0,0 +1 @@
+<h1>a</h1>

test/apps/custom-extension/src/routes/const.whokilledthemuffinman

@@ -0,0 +1 @@
+<h1>Tremendous!</h1>

test/apps/custom-extension/src/routes/index.jesuslivesineveryone

@@ -0,0 +1,8 @@
+<h1>Great success!</h1>
+
+<a href="a">a</a>
+<a href="ambiguous/ok.json">ok</a>
+<a href="echo-query?message">ok</a>
+<a href="echo-query?p=one&p=two">ok</a>
+
+<div class='hydrate-test'></div>

test/apps/custom-extension/src/routes/unsafe-replacement.svelte

@@ -0,0 +1 @@
+<h1>Bazooom!</h1>

test/apps/custom-extension/src/server.js

@@ -0,0 +1,9 @@
+import polka from 'polka';
+import * as sapper from '@sapper/server';
+
+import { start } from '../../common.js';
+
+const app = polka()
+	.use(sapper.middleware())
+
+start(app);

test/apps/custom-extension/src/service-worker.js

@@ -0,0 +1,81 @@
+import * as sapper from '@sapper/service-worker';
+
+const ASSETS = `cache${sapper.timestamp}`;
+
+// `app.shell` is an array of all the files generated by webpack,
+// `app.files` is an array of everything in the `static` directory
+const to_cache = sapper.shell.concat(sapper.files);
+const cached = new Set(to_cache);
+
+self.addEventListener('install', event => {
+	event.waitUntil(
+		caches
+			.open(ASSETS)
+			.then(cache => cache.addAll(to_cache))
+			.then(() => {
+				self.skipWaiting();
+			})
+	);
+});
+
+self.addEventListener('activate', event => {
+	event.waitUntil(
+		caches.keys().then(async keys => {
+			// delete old caches
+			for (const key of keys) {
+				if (key !== ASSETS) await caches.delete(key);
+			}
+
+			self.clients.claim();
+		})
+	);
+});
+
+self.addEventListener('fetch', event => {
+	if (event.request.method !== 'GET') return;
+
+	const url = new URL(event.request.url);
+
+	// don't try to handle e.g. data: URIs
+	if (!url.protocol.startsWith('http')) return;
+
+	// ignore dev server requests
+	if (url.hostname === self.location.hostname && url.port !== self.location.port) return;
+
+	// always serve assets and webpack-generated files from cache
+	if (url.host === self.location.host && cached.has(url.pathname)) {
+		event.respondWith(caches.match(event.request));
+		return;
+	}
+
+	// for pages, you might want to serve a shell `index.html` file,
+	// which Sapper has generated for you. It's not right for every
+	// app, but if it's right for yours then uncomment this section
+	/*
+		event.respondWith(caches.match('/index.html'));
+		return;
+	}
+	*/
+
+	if (event.request.cache === 'only-if-cached') return;
+
+	// for everything else, try the network first, falling back to
+	// cache if the user is offline. (If the pages never change, you
+	// might prefer a cache-first approach to a network-first one.)
+	event.respondWith(
+		caches
+			.open(`offline${sapper.timestamp}`)
+			.then(async cache => {
+				try {
+					const response = await fetch(event.request);
+					cache.put(event.request, response.clone());
+					return response;
+				} catch(err) {
+					const response = await cache.match(event.request);
+					if (response) return response;
+
+					throw err;
+				}
+			})
+	);
+});

test/apps/custom-extension/src/template.html

@@ -0,0 +1,14 @@
+<!doctype html>
+<html lang="en">
+<head>
+	<meta charset='utf-8'>
+
+	%sapper.base%
+	%sapper.styles%
+	%sapper.head%
+</head>
+<body>
+	<div id='sapper'>%sapper.html%</div>
+	%sapper.scripts%
+</body>
+</html>

test/apps/custom-extension/test.ts

@@ -0,0 +1,61 @@
+import * as assert from 'assert';
+import { build } from '../../../api';
+import { AppRunner } from '../AppRunner';
+
+describe('custom extensions', function() {
+	this.timeout(10000);
+
+	let r: AppRunner;
+
+	// hooks
+	before('build app', () => build({ cwd: __dirname , ext: '.jesuslivesineveryone .whokilledthemuffinman .mdx .svelte' }));
+	before('start runner', async () => {
+		r = await new AppRunner().start(__dirname);
+	});
+
+	after(() => r && r.end());
+
+
+	
+	it('works with arbitrary extensions', async () => {
+		await r.load(`/`);
+
+
+		assert.equal(
+			await r.text('h1'),
+			'Great success!'
+		);
+	});
+
+	it('works with other arbitrary extensions', async () => {
+		await r.load(`/const`);
+
+		assert.equal(
+			await r.text('h1'),
+			'Tremendous!'
+		);
+
+		await r.load(`/a`);
+
+		assert.equal(
+			await r.text('h1'),
+			'a'
+		);
+
+		await r.load(`/test-slug`);
+
+		assert.equal(
+			await r.text('h1'),
+			'TEST-SLUG'
+		);
+
+		await r.load(`/unsafe-replacement`);
+
+		assert.equal(
+			await r.text('h1'),
+			'Bazooom!'
+		);
+	});
+
+	
+});

test/unit/create_manifest_data/test.ts

@@ -177,4 +177,66 @@ describe('manifest_data', () => {
 			pattern: /^\/foo\/?$/
 		}]);
 	});
+
+	it('works with custom extensions' , () => {
+		const { components, pages, server_routes } = create_manifest_data(path.join(__dirname, 'samples/custom-extension'), '.jazz .beebop .funk .html');
+
+		const index = { name: 'index', file: 'index.funk', has_preload: false };
+		const about = { name: 'about', file: 'about.jazz', has_preload: false };
+		const blog = { name: 'blog', file: 'blog/index.html', has_preload: false };
+		const blog_$slug = { name: 'blog_$slug', file: 'blog/[slug].beebop', has_preload: false };
+
+		assert.deepEqual(components, [
+			index,
+			about,
+			blog,
+			blog_$slug
+		]);
+
+		assert.deepEqual(pages, [
+			{
+				pattern: /^\/$/,
+				parts: [
+					{ component: index, params: [] }
+				]
+			},
+
+			{
+				pattern: /^\/about\/?$/,
+				parts: [
+					{ component: about, params: [] }
+				]
+			},
+
+			{
+				pattern: /^\/blog\/?$/,
+				parts: [
+					{ component: blog, params: [] }
+				]
+			},
+
+			{
+				pattern: /^\/blog\/([^\/]+?)\/?$/,
+				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']
+			}
+		]);
+	});
 });