fix some typescript stuff

src/core/create_app.ts

@@ -16,11 +16,7 @@ function fudge_mtime(file: string) {
 	);
 }
 
-function create_app({
-	src,
-	dev,
-	entry
-}: {
+function create_app({ src, dev, entry }: {
 	src: string;
 	dev: boolean;
 	entry: { client: string; server: string };

src/core/create_assets.ts

@@ -4,18 +4,29 @@ import glob from 'glob';
 import { create_templates, render } from './templates';
 import create_routes from './create_routes';
 
-function ensure_array(thing) {
+function ensure_array(thing: any) {
 	return Array.isArray(thing) ? thing : [thing]; // omg webpack what the HELL are you doing
 }
 
-export default function create_assets({ src, dest, dev, client_info, server_info }) {
+type WebpackInfo = {
+	assetsByChunkName: Record<string, string>;
+	assets: Array<{ name: string }>
+}
+
+export default function create_assets({ src, dest, dev, client_info, server_info }: {
+	src: string;
+	dest: string;
+	dev: boolean;
+	client_info: WebpackInfo;
+	server_info: WebpackInfo;
+}) {
 	create_templates(); // TODO refactor this...
 
 	const main_file = `/client/${ensure_array(client_info.assetsByChunkName.main)[0]}`;
 
 	const chunk_files = client_info.assets.map(chunk => `/client/${chunk.name}`);
 
-	const service_worker = generate_service_worker({ chunk_files, src });
+	const service_worker = generate_service_worker(chunk_files, src);
 	const index = generate_index(main_file);
 
 	const routes = create_routes({ src });
@@ -31,13 +42,13 @@ export default function create_assets({ src, dest, dev, client_info, server_info
 			chunk_files,
 
 			main: read(`${dest}${main_file}`),
-			chunks: chunk_files.reduce((lookup, file) => {
+			chunks: chunk_files.reduce((lookup: Record<string, string>, file) => {
 				lookup[file] = read(`${dest}${file}`);
 				return lookup;
 			}, {}),
 
 			// TODO confusing that `routes` refers to an array *and* a lookup
-			routes: routes.reduce((lookup, route) => {
+			routes: routes.reduce((lookup: Record<string, string>, route) => {
 				lookup[route.id] = `/client/${ensure_array(client_info.assetsByChunkName[route.id])[0]}`;
 				return lookup;
 			}, {}),
@@ -54,7 +65,7 @@ export default function create_assets({ src, dest, dev, client_info, server_info
 	};
 }
 
-function generate_service_worker({ chunk_files, src }) {
+function generate_service_worker(chunk_files: string[], src: string) {
 	const assets = glob.sync('**', { cwd: 'assets', nodir: true });
 
 	const routes = create_routes({ src });
@@ -67,13 +78,13 @@ function generate_service_worker({ chunk_files, src }) {
 	}]`;
 
 	return read('templates/service-worker.js')
-		.replace(/__timestamp__/g, Date.now())
+		.replace(/__timestamp__/g, String(Date.now()))
 		.replace(/__assets__/g, JSON.stringify(assets))
 		.replace(/__shell__/g, JSON.stringify(chunk_files.concat('/index.html')))
 		.replace(/__routes__/g, route_code);
 }
 
-function generate_index(main_file) {
+function generate_index(main_file: string) {
 	return render(200, {
 		styles: '',
 		head: '',
@@ -82,6 +93,6 @@ function generate_index(main_file) {
 	});
 }
 
-function read(file) {
+function read(file: string) {
 	return fs.readFileSync(file, 'utf-8');
 }

src/core/create_compilers.ts

@@ -6,11 +6,24 @@ export default function create_compilers() {
 
 	return {
 		client: webpack(
-			require(path.resolve('webpack.client.config.js'))
+			require(path.resolve('webpack/client.config.js'))
 		),
 
 		server: webpack(
-			require(path.resolve('webpack.server.config.js'))
+			require(path.resolve('webpack/server.config.js'))
+		),
+
+		serviceWorker: webpack(
+			tryRequire(path.resolve('webpack/server.config.js'))
 		)
 	};
+}
+
+function tryRequire(specifier: string) {
+	try {
+		return require(specifier);
+	} catch (err) {
+		if (err.code === 'MODULE_NOT_FOUND') return null;
+		throw err;
+	}
 }

src/core/create_routes.ts

@@ -1,9 +1,23 @@
 import * as path from 'path';
 import glob from 'glob';
 
-export default function create_routes({ src, files = glob.sync('**/*.+(html|js|mjs)', { cwd: src }) }) {
-	const routes = files
-		.map(file => {
+type Route = {
+	id: string;
+	type: 'page' | 'route';
+	file: string;
+	pattern: RegExp;
+	test: (url: string) => boolean;
+	exec: (url: string) => Record<string, string>;
+	parts: string[];
+	dynamic: string[];
+}
+
+export default function create_routes({ src, files = glob.sync('**/*.+(html|js|mjs)', { cwd: src }) }: {
+	src: string;
+	files?: string[];
+}) {
+	const routes: Route[] = files
+		.map((file: string) => {
 			if (/(^|\/|\\)_/.test(file)) return;
 
 			const parts = file.replace(/\.(html|js|mjs)$/, '').split('/'); // glob output is always posix-style
@@ -34,13 +48,13 @@ export default function create_routes({ src, files = glob.sync('**/*.+(html|js|m
 
 			const pattern = new RegExp(`^${pattern_string}\\/?$`);
 
-			const test = url => pattern.test(url);
+			const test = (url: string) => pattern.test(url);
 
-			const exec = url => {
+			const exec = (url: string) => {
 				const match = pattern.exec(url);
 				if (!match) return;
 
-				const params = {};
+				const params: Record<string, string> = {};
 				dynamic.forEach((param, i) => {
 					params[param] = match[i + 1];
 				});
@@ -60,7 +74,7 @@ export default function create_routes({ src, files = glob.sync('**/*.+(html|js|m
 			};
 		})
 		.filter(Boolean)
-		.sort((a, b) => {
+		.sort((a: Route, b: Route) => {
 			let same = true;
 
 			for (let i = 0; true; i += 1) {