fix: beautify sitemap and robots output

package.json

@@ -12,6 +12,7 @@
   "version": "3.2.1",
   "main": "./dist/index.js",
   "scripts": {
+    "build:example": "npx amagaki build example",
     "check": "gts check",
     "clean": "gts clean",
     "compile": "tsc; npx gulp build;",

src/sitemap.test.ts

@@ -8,23 +8,23 @@ test('SitemapPlugin: sitemap.xml', async (t: ExecutionContext) => {
   await pod.router.warmup();
   const sitemapRoute = await pod.router.resolve('/foo/sitemap.xml') as Route;
   const sitemapContent = await sitemapRoute.build();
-  const sitemapExpected = `
-  <?xml version="1.0" encoding="UTF-8"?>
-  <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
-      <url>
-          <loc>http://localhost/pages/foo/</loc>
-          <xhtml:link href="http://localhost/pages/foo/" hreflang="x-default" rel="alternate" />
-          <xhtml:link href="http://localhost/pages/foo/" hreflang="en" rel="alternate" />
-          <xhtml:link href="http://localhost/ja/pages/foo/" hreflang="ja" rel="alternate" />
-      </url>
-      <url>
-          <loc>http://localhost/pages/</loc>
-          <xhtml:link href="http://localhost/pages/" hreflang="x-default" rel="alternate" />
-          <xhtml:link href="http://localhost/pages/" hreflang="en" rel="alternate" />
-          <xhtml:link href="http://localhost/ja/pages/" hreflang="ja" rel="alternate" />
-      </url>
-  </urlset>
-  `.trim();
+  const sitemapExpected = 
+`<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
+  <url>
+    <loc>http://localhost/pages/foo/</loc>
+    <xhtml:link href="http://localhost/pages/foo/" hreflang="x-default" rel="alternate" />
+    <xhtml:link href="http://localhost/pages/foo/" hreflang="en" rel="alternate" />
+    <xhtml:link href="http://localhost/ja/pages/foo/" hreflang="ja" rel="alternate" />
+  </url>
+  <url>
+    <loc>http://localhost/pages/</loc>
+    <xhtml:link href="http://localhost/pages/" hreflang="x-default" rel="alternate" />
+    <xhtml:link href="http://localhost/pages/" hreflang="en" rel="alternate" />
+    <xhtml:link href="http://localhost/ja/pages/" hreflang="ja" rel="alternate" />
+  </url>
+</urlset>
+`.trim();
   t.deepEqual(sitemapContent, sitemapExpected);
 });
 
@@ -33,9 +33,6 @@ test('SitemapPlugin: robots.txt', async (t: ExecutionContext) => {
   await pod.router.warmup();
   const robotsRoute = await pod.router.resolve('/bar/robots.txt') as Route;
   const robotsContent = await robotsRoute.build();
-  const robotsExpected = `
-      User-agent: *
-      Allow: /
-    `;
+  const robotsExpected = 'User-agent: *\nAllow: /';
   t.deepEqual(robotsContent, robotsExpected);
 });

src/sitemap.ts

@@ -5,6 +5,7 @@ import {
   RouteProvider,
   Router,
 } from '@amagaki/amagaki';
+import jsBeautify from 'js-beautify';
 
 export interface SitemapPluginOptions {
   sitemapPath?: string;
@@ -45,10 +46,7 @@ class RobotsTxtRoute extends Route {
 
   async build() {
     // TODO: Add Sitemap property, hook into document.
-    return `
-      User-agent: *
-      Allow: /
-    `;
+    return 'User-agent: *\nAllow: /';
   }
 }
 
@@ -89,11 +87,12 @@ class SitemapRoute extends Route {
         (route as DocumentRoute).locale === this.pod.defaultLocale &&
         !route.urlPath.includes('/404/')
     );
-    return (
+    const text = (
       await njk.renderFromString(this.templateSource, {
         routes: routes,
         pod: this.pod,
       })
     ).replace(/^\s*[\r\n]/gm, '');
+    return jsBeautify.html(text, {indent_size: 2});
   }
 }