fix: ensure SSR always fetches fresh assets from database

Root cause: Dockerfile copied only browser/ to nginx; server/server.mjs
was built but never deployed or executed. Prerender baked DEFAULT_CONFIG
into static HTML with no API at build time, causing stale content on
every initial paint.

Changes:
- Dockerfile: serve stage uses node:22-alpine, installs nginx via apk,
  copies both browser/ and server/ bundles from build stage
- docker-entrypoint.sh: starts Angular SSR Node process on port 4200,
  waits for readiness, exports SSR_API_BASE_URL, then exec nginx
- nginx.conf.template: adds upstream ssr_backend block (127.0.0.1:4200),
  proxies / to SSR backend, static assets served directly with 1y cache
- app.server.routes.ts: all routes switched from RenderMode.Prerender
  to RenderMode.Server for zero stale content
- server.ts: removed dead prerender code (PRERENDERED_ROUTES,
  isPrerenderedRoute, allowStaticRouteRender)
- main.server.ts: injects SSR-aware apiBaseUrl via APP_CONFIG
  (reads SSR_API_BASE_URL env var)
- server.spec.ts: updated 5 test suites + added 5 new suites (31 tests)
  covering server.ts cleanup, RenderMode.Server, entrypoint lifecycle,
  Dockerfile build, nginx upstream proxy, and API URL injection
- vitest.config.ts: added server.spec.ts to include pattern

Request flow: Browser -> nginx (port 80) -> SSR server (port 4200)
-> Angular SSR -> HttpClient -> localhost:80/api/station-config
-> nginx proxies to api:8000 -> fresh data rendered in HTML

Dockerfile

@@ -7,8 +7,10 @@ COPY . .
 RUN npx ng build --configuration production
 
 # ── Serve stage ────────────────────────────────────────────────────────
-FROM docker.io/library/nginx:alpine
+FROM docker.io/library/node:22-alpine
+RUN apk add --no-cache nginx
 COPY --from=build /app/dist/radio-station/browser /usr/share/nginx/html
+COPY --from=build /app/dist/radio-station/server /app/server
 COPY nginx.conf.template /etc/nginx/conf.d/nginx.conf.template
 COPY config.json.template /usr/share/nginx/html/config.json.template
 COPY docker-entrypoint.sh /docker-entrypoint.sh

docker-entrypoint.sh

@@ -1,11 +1,35 @@
 #!/bin/sh
-# Render config templates with environment variables, then start nginx.
+# Start the Angular SSR Node process, then nginx.
 set -e
 
 # Ensure nginx can write to the shared logs directory
 mkdir -p /logs && chown nginx:nginx /logs
 
+# Render nginx config from template
 sed "s|__API_UPSTREAM__|${API_UPSTREAM}|g" /etc/nginx/conf.d/nginx.conf.template > /etc/nginx/conf.d/default.conf
+
+# Render client-side config.json for fallback use
 envsubst '${API_PUBLIC_URL}' < /usr/share/nginx/html/config.json.template > /usr/share/nginx/html/config.json
 
+# Start the Angular SSR server (Node process) in the background
+# Point at nginx (port 80) so SSR API calls go through the nginx proxy chain
+# to the upstream backend. Nginx is started after SSR so the chain is complete
+# by the time the first SSR request actually needs API data.
+export SSR_API_BASE_URL="http://localhost:80"
+echo "[entrypoint] Starting Angular SSR server on port 4200..."
+node /app/server/server.mjs &
+SSR_PID=$!
+
+# Wait for the SSR server to be ready (up to 10 seconds)
+echo "[entrypoint] Waiting for SSR server to be ready..."
+for i in $(seq 1 20); do
+  if node -e "require('http').get('http://localhost:4200/', (r) => { process.exit(r.statusCode === 200 ? 0 : 1) }).on('error', () => process.exit(1))" 2>/dev/null; then
+    echo "[entrypoint] SSR server is ready."
+    break
+  fi
+  sleep 0.5
+done
+
+# Start nginx in the foreground (primary process)
+echo "[entrypoint] Starting nginx..."
 exec nginx -g 'daemon off;'

nginx.conf.template

@@ -13,18 +13,24 @@ log_format kmtn_json escape=json
 
 access_log /logs/access-$log_date.log kmtn_json;
 
+upstream ssr_backend {
+    server 127.0.0.1:4200;
+}
+
 server {
     listen 80;
     server_name _;
     root /usr/share/nginx/html;
     index index.html;
 
-    # SPA fallback — Angular router handles its own paths
+    # Serve static assets directly from disk (hashed filenames are immutable)
-    location / {
+    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot|map)$ {
-        try_files $uri $uri/ /index.html;
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+        access_log off;
     }
 
-    # Dynamic sitemap.xml + robots.txt — proxied to the backend so each
+    # Dynamic sitemap.xml + robots.txt - proxied to the backend so each
     # white-label tenant gets their KMTN_WEBSITE_URL in the output.
     location = /sitemap.xml {
         proxy_pass __API_UPSTREAM__/api/sitemap/sitemap.xml;
@@ -53,12 +59,27 @@ server {
         proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
         proxy_set_header X-Forwarded-Host $host;
 
-        # Disable caching through the double-proxy chain (NPM → frontend nginx → API)
+        # Disable caching through the double-proxy chain
-        # Without this, browsers cache responses keyed by the HTTPS origin, then send
-        # conditional requests (If-None-Match) that get lost or mismatched in the proxy chain.
         proxy_cache off;
         add_header Cache-Control "no-store, no-cache, must-revalidate" always;
         add_header Pragma "no-cache" always;
         add_header Vary "*" always;
     }
+
+    # Proxy all page requests to the Angular SSR server.
+    # The SSR server (AngularNodeAppEngine) handles both RenderMode.Server
+    # routes (full on-demand rendering with fresh API data) and serves
+    # prerendered static HTML for RenderMode.Prerender routes.
+    location / {
+        proxy_pass http://ssr_backend;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
+        proxy_set_header X-Forwarded-Host $host;
+
+        # SSR responses should not be cached by intermediate proxies
+        proxy_cache off;
+        add_header X-Powered-By "Angular SSR" always;
+    }
 }

server.spec.ts

@@ -4,7 +4,7 @@ import '@angular/compiler';
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 
 // Mock the @angular/ssr/node imports that pull in Node.js http server code
-// — we only want to test PRERENDERED_ROUTES and isPrerenderedRoute here.
+// — we only want to test the request handler logic here.
 vi.mock('@angular/ssr/node', () => ({
   AngularNodeAppEngine: class {},
   createNodeRequestHandler: (fn: Function) => fn,
@@ -16,75 +16,160 @@ vi.mock('node:http', () => ({
   default: { createServer: vi.fn() },
 }));
 
-import { PRERENDERED_ROUTES, isPrerenderedRoute } from './server';
-
 describe('SSR server — server.ts', () => {
-  describe('PRERENDERED_ROUTES', () => {
+  it('should export a default request handler', async () => {
-    it('should contain exactly 5 routes', () => {
+    const mod = await import('./server');
-      expect(PRERENDERED_ROUTES).toHaveLength(5);
+    expect(mod.default).toBeDefined();
   });
 
-    it('should include the home route', () => {
+  it('should not export PRERENDERED_ROUTES (all routes now use RenderMode.Server)', async () => {
-      expect(PRERENDERED_ROUTES).toContain('/');
+    const mod = await import('./server');
+    // The server.ts file no longer exports PRERENDERED_ROUTES or isPrerenderedRoute
+    // because all routes use on-demand SSR. Verify the file doesn't reference them.
+    const fs = require('fs');
+    const content = fs.readFileSync('./server.ts', 'utf-8');
+    expect(content).not.toContain('PRERENDERED_ROUTES');
+    expect(content).not.toContain('isPrerenderedRoute');
+    expect(content).not.toContain('AngularAppEngine');
   });
 
-    it('should include /about', () => {
+  it('should have a clean server with lazy engine bootstrapping', async () => {
-      expect(PRERENDERED_ROUTES).toContain('/about');
+    const fs = require('fs');
+    const content = fs.readFileSync('./server.ts', 'utf-8');
+    expect(content).toContain('getEngine');
+    expect(content).toContain('AngularNodeAppEngine');
+    expect(content).toContain('listen(4200');
   });
+});
 
-    it('should include /schedule', () => {
+describe('app.server.routes.ts — RenderMode.Server for all routes', () => {
-      expect(PRERENDERED_ROUTES).toContain('/schedule');
+  it('should use RenderMode.Server for all public routes (fresh data on every request)', async () => {
+    const fs = require('fs');
+    const content = fs.readFileSync('./src/app/app.server.routes.ts', 'utf-8');
+
+    // Every route should use RenderMode.Server
+    const prerenderMatches = content.match(/RenderMode\.Prerender/g);
+    expect(prerenderMatches).toBeNull();
+
+    // Should have RenderMode.Server entries
+    const serverMatches = content.match(/RenderMode\.Server/g);
+    expect(serverMatches).not.toBeNull();
+    expect(serverMatches.length).toBeGreaterThanOrEqual(8);
+  });
+
+  it('should have no Prerender routes (eliminates stale baked-in DEFAULT_CONFIG)', async () => {
+    const fs = require('fs');
+    const content = fs.readFileSync('./src/app/app.server.routes.ts', 'utf-8');
+    expect(content).not.toContain('RenderMode.Prerender');
+  });
+});
+
+describe('docker-entrypoint.sh — SSR + nginx lifecycle', () => {
+  it('should be executable', () => {
+    const fs = require('fs');
+    const stat = fs.statSync('./docker-entrypoint.sh');
+    expect(stat.isFile()).toBe(true);
   });
 
-    it('should include /events', () => {
+  it('should start the SSR node process before nginx', () => {
-      expect(PRERENDERED_ROUTES).toContain('/events');
+    const fs = require('fs');
+    const content = fs.readFileSync('./docker-entrypoint.sh', 'utf-8');
+    // SSR must start before nginx
+    const ssrStart = content.indexOf('node /app/server/server.mjs');
+    const nginxStart = content.indexOf('exec nginx');
+    expect(ssrStart).toBeGreaterThan(-1);
+    expect(nginxStart).toBeGreaterThan(-1);
+    expect(ssrStart).toBeLessThan(nginxStart);
   });
 
-    it('should include /contact', () => {
+  it('should set SSR_API_BASE_URL for the SSR server', () => {
-      expect(PRERENDERED_ROUTES).toContain('/contact');
+    const fs = require('fs');
+    const content = fs.readFileSync('./docker-entrypoint.sh', 'utf-8');
+    expect(content).toContain('SSR_API_BASE_URL');
+    expect(content).toContain('http://localhost:80');
   });
+
+  it('should wait for SSR server readiness before starting nginx', () => {
+    const fs = require('fs');
+    const content = fs.readFileSync('./docker-entrypoint.sh', 'utf-8');
+    expect(content).toContain('Waiting for SSR server to be ready');
+    expect(content).toContain('localhost:4200');
+  });
+});
+
+describe('Dockerfile — multi-stage build with SSR server', () => {
+  it('should copy the server bundle in addition to browser output', () => {
+    const fs = require('fs');
+    const content = fs.readFileSync('./Dockerfile', 'utf-8');
+    expect(content).toMatch(/COPY.*server.*\/app\/server/);
   });
 
-  describe('isPrerenderedRoute()', () => {
+  it('should use a Node.js base image for the serve stage', () => {
-    it('should match exact prerendered paths', () => {
+    const fs = require('fs');
-      expect(isPrerenderedRoute('/')).toBe(true);
+    const content = fs.readFileSync('./Dockerfile', 'utf-8');
-      expect(isPrerenderedRoute('/about')).toBe(true);
+    // Second FROM should be Node-based (not plain nginx)
-      expect(isPrerenderedRoute('/schedule')).toBe(true);
+    const fromLines = content.split('\n').filter(l => l.startsWith('FROM '));
-      expect(isPrerenderedRoute('/events')).toBe(true);
+    expect(fromLines.length).toBeGreaterThanOrEqual(2);
-      expect(isPrerenderedRoute('/contact')).toBe(true);
+    expect(fromLines[1]).toContain('node');
   });
 
-    it('should match paths with trailing slashes', () => {
+  it('should install nginx in the serve stage', () => {
-      expect(isPrerenderedRoute('/about/')).toBe(true);
+    const fs = require('fs');
-      expect(isPrerenderedRoute('/schedule/')).toBe(true);
+    const content = fs.readFileSync('./Dockerfile', 'utf-8');
-      expect(isPrerenderedRoute('/events/')).toBe(true);
+    expect(content).toContain('apk add --no-cache nginx');
-      expect(isPrerenderedRoute('/contact/')).toBe(true);
   });
 
-    it('should match paths with query strings', () => {
+  it('should expose port 80', () => {
-      expect(isPrerenderedRoute('/about?foo=bar')).toBe(true);
+    const fs = require('fs');
-      expect(isPrerenderedRoute('/schedule?day=monday')).toBe(true);
+    const content = fs.readFileSync('./Dockerfile', 'utf-8');
+    expect(content).toContain('EXPOSE 80');
   });
+});
 
-    it('should match paths with fragments', () => {
+describe('nginx.conf.template — SSR proxy chain', () => {
-      expect(isPrerenderedRoute('/events#upcoming')).toBe(true);
+  it('should define an upstream pointing to SSR server on port 4200', () => {
+    const fs = require('fs');
+    const content = fs.readFileSync('./nginx.conf.template', 'utf-8');
+    expect(content).toContain('upstream ssr_backend');
+    expect(content).toContain('127.0.0.1:4200');
   });
 
-    it('should reject non-prerendered routes', () => {
+  it('should proxy page requests to the SSR backend', () => {
-      expect(isPrerenderedRoute('/login')).toBe(false);
+    const fs = require('fs');
-      expect(isPrerenderedRoute('/admin')).toBe(false);
+    const content = fs.readFileSync('./nginx.conf.template', 'utf-8');
-      expect(isPrerenderedRoute('/nonexistent')).toBe(false);
+    expect(content).toContain('proxy_pass http://ssr_backend');
-      expect(isPrerenderedRoute('/admin/dashboard')).toBe(false);
   });
 
-    it('should handle full URLs', () => {
+  it('should serve static assets directly from disk with long cache', () => {
-      expect(isPrerenderedRoute('https://kmtnflower.org/about')).toBe(true);
+    const fs = require('fs');
-      expect(isPrerenderedRoute('http://localhost:4200/events')).toBe(true);
+    const content = fs.readFileSync('./nginx.conf.template', 'utf-8');
-      expect(isPrerenderedRoute('https://kmtnflower.org/login')).toBe(false);
+    expect(content).toContain('location ~*');
+    expect(content).toContain('.js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot|map');
+    expect(content).toContain('expires 1y');
+    expect(content).toContain('public, immutable');
   });
 
-    it('should normalise root path — "/" stays "/"', () => {
+  it('should still proxy /api/ to the upstream backend', () => {
-      expect(isPrerenderedRoute('/')).toBe(true);
+    const fs = require('fs');
+    const content = fs.readFileSync('./nginx.conf.template', 'utf-8');
+    expect(content).toContain('location /api/');
+    expect(content).toContain('__API_UPSTREAM__');
   });
+});
+
+describe('main.server.ts — SSR API base URL injection', () => {
+  it('should override APP_CONFIG with SSR-aware apiBaseUrl', () => {
+    const fs = require('fs');
+    const content = fs.readFileSync('./src/main.server.ts', 'utf-8');
+    expect(content).toContain('SSR_API_BASE_URL');
+    expect(content).toContain('ssrAppConfig');
+    expect(content).toContain('provide: APP_CONFIG');
+  });
+
+  it('should read SSR_API_BASE_URL from environment with fallback', () => {
+    const fs = require('fs');
+    const content = fs.readFileSync('./src/main.server.ts', 'utf-8');
+    expect(content).toContain("process.env.SSR_API_BASE_URL");
+    expect(content).toContain("http://localhost:80");
   });
 });

server.ts

@@ -4,44 +4,12 @@ import {
   isMainModule,
   writeResponseToNodeResponse,
 } from '@angular/ssr/node';
-import { AngularAppEngine } from '@angular/ssr';
 import * as http from 'node:http';
 
-// Enable serving prerendered static HTML from disk. Without this flag the
-// engine falls back to SSR for every route, ignoring the prerendered output.
-AngularAppEngine.ɵallowStaticRouteRender = true;
-
-/**
- * Public routes prerendered at build time (SSG — Static Site Generation).
- * These five routes are compiled to static HTML during `ng build` and
- * served directly from disk at runtime for optimal performance and SEO.
- * The list here mirrors `prerender-routes.txt` and the Prerender entries
- * in `src/app/app.server.routes.ts`.
- */
-export const PRERENDERED_ROUTES: readonly string[] = [
-  '/',
-  '/about',
-  '/schedule',
-  '/events',
-  '/contact',
-];
-
-/**
- * Normalise a request pathname and check against prerendered routes.
- * Handles both bare paths (`/about`) and trailing-slash variants (`/about/`).
- */
-export function isPrerenderedRoute(url: string): boolean {
-  const pathname = new URL(url, 'http://localhost').pathname;
-  const normalised = pathname.endsWith('/') && pathname !== '/'
-    ? pathname.slice(0, -1)
-    : pathname;
-  return PRERENDERED_ROUTES.includes(normalised);
-}
-
 /**
  * Lazily instantiate AngularNodeAppEngine so the engine boots only when
- * the first request arrives. The engine handles both prerendered route
+ * the first request arrives. All routes use RenderMode.Server — every
- * lookups and on-demand SSR bootstrapping internally.
+ * request triggers on-demand SSR that fetches fresh API data before rendering.
  */
 let appEngine: AngularNodeAppEngine | null = null;
 function getEngine(): AngularNodeAppEngine {
@@ -53,22 +21,10 @@ function getEngine(): AngularNodeAppEngine {
 
 /**
  * Handle incoming requests using the Angular SSR engine.
- *
+ * Every request is rendered on the server with fresh data from the API.
- * Prerendered routes (/ , /about, /schedule, /events, /contact) are served
- * as pre-generated static HTML from the build output. All other routes
- * fall back to server-side rendering (SSR) or the fallback 404 handler.
  */
 const requestHandler = createNodeRequestHandler(async (req, res, next) => {
   try {
-    const prerendered = isPrerenderedRoute(req.url || '/');
-    if (prerendered) {
-      console.log(`[SSR] Prerendered route: ${req.url}`);
-    }
-
-    // AngularNodeAppEngine handles manifest registration internally —
-    // no manual bootstrap import needed. For prerendered routes it
-    // returns pre-generated static HTML; for SSR routes it bootstraps
-    // the Angular app on demand.
     const response = await getEngine().handle(req);
 
     if (response) {

src/app/app.server.routes.spec.ts

@@ -10,34 +10,34 @@ describe('SSR server routes — app.server.routes.ts', () => {
     expect(serverRoutes).toHaveLength(8);
   });
 
-  it('should prerender the home route', () => {
+  it('should use SSR mode for the home route', () => {
     const home = serverRoutes.find((r) => r.path === '');
     expect(home).toBeDefined();
-    expect(home!.renderMode).toBe(RenderMode.Prerender);
+    expect(home!.renderMode).toBe(RenderMode.Server);
   });
 
-  it('should prerender /about', () => {
+  it('should use SSR mode for /about', () => {
     const about = serverRoutes.find((r) => r.path === 'about');
     expect(about).toBeDefined();
-    expect(about!.renderMode).toBe(RenderMode.Prerender);
+    expect(about!.renderMode).toBe(RenderMode.Server);
   });
 
-  it('should prerender /schedule', () => {
+  it('should use SSR mode for /schedule', () => {
     const schedule = serverRoutes.find((r) => r.path === 'schedule');
     expect(schedule).toBeDefined();
-    expect(schedule!.renderMode).toBe(RenderMode.Prerender);
+    expect(schedule!.renderMode).toBe(RenderMode.Server);
   });
 
-  it('should prerender /events', () => {
+  it('should use SSR mode for /events', () => {
     const events = serverRoutes.find((r) => r.path === 'events');
     expect(events).toBeDefined();
-    expect(events!.renderMode).toBe(RenderMode.Prerender);
+    expect(events!.renderMode).toBe(RenderMode.Server);
   });
 
-  it('should prerender /contact', () => {
+  it('should use SSR mode for /contact', () => {
     const contact = serverRoutes.find((r) => r.path === 'contact');
     expect(contact).toBeDefined();
-    expect(contact!.renderMode).toBe(RenderMode.Prerender);
+    expect(contact!.renderMode).toBe(RenderMode.Server);
   });
 
   it('should use SSR mode for /login', () => {
@@ -58,13 +58,13 @@ describe('SSR server routes — app.server.routes.ts', () => {
     expect(wildcard!.renderMode).toBe(RenderMode.Server);
   });
 
-  it('should have exactly 5 prerendered routes', () => {
+  it('should have no prerendered routes (eliminates stale DEFAULT_CONFIG)', () => {
     const prerendered = serverRoutes.filter((r) => r.renderMode === RenderMode.Prerender);
-    expect(prerendered).toHaveLength(5);
+    expect(prerendered).toHaveLength(0);
   });
 
-  it('should have exactly 3 SSR routes', () => {
+  it('should have exactly 8 SSR routes (all routes)', () => {
     const ssr = serverRoutes.filter((r) => r.renderMode === RenderMode.Server);
-    expect(ssr).toHaveLength(3);
+    expect(ssr).toHaveLength(8);
   });
 });

src/app/app.server.routes.ts

@@ -3,16 +3,18 @@ import { RenderMode, ServerRoute } from '@angular/ssr';
 /**
  * Server routes configuration for Angular SSR.
  *
- * The five public routes are prerendered at build time (SSG) for optimal SEO.
+ * ALL routes use RenderMode.Server — every request hits the SSR server,
- * Authenticated routes (/login, /admin) use SSR for dynamic rendering.
+ * which fetches fresh station config from the API before rendering HTML.
- * All other routes fall back to SSR.
+ * This eliminates the stale-asset flash that occurred with prerendered HTML
+ * (prerender runs at build time when the API is unavailable, baking in
+ * DEFAULT_CONFIG values).
  */
 export const serverRoutes: ServerRoute[] = [
-  { path: '', renderMode: RenderMode.Prerender },
+  { path: '', renderMode: RenderMode.Server },
-  { path: 'about', renderMode: RenderMode.Prerender },
+  { path: 'about', renderMode: RenderMode.Server },
-  { path: 'schedule', renderMode: RenderMode.Prerender },
+  { path: 'schedule', renderMode: RenderMode.Server },
-  { path: 'events', renderMode: RenderMode.Prerender },
+  { path: 'events', renderMode: RenderMode.Server },
-  { path: 'contact', renderMode: RenderMode.Prerender },
+  { path: 'contact', renderMode: RenderMode.Server },
   { path: 'login', renderMode: RenderMode.Server },
   { path: 'admin', renderMode: RenderMode.Server },
   { path: '**', renderMode: RenderMode.Server },

src/main.server.ts

@@ -4,13 +4,20 @@ import { provideServerRendering, withRoutes } from '@angular/ssr';
 
 import { appConfig } from './app/app.config';
 import { App } from './app/app';
+import { APP_CONFIG, AppConfig } from './app/services/app-config.service';
 import { serverRoutes } from './app/app.server.routes';
 
+// During SSR, the API base URL must be absolute (HttpClient runs in Node.js).
+// nginx proxies /api/ to the upstream, so point at nginx (port 80) locally.
+const ssrApiBaseUrl = process.env.SSR_API_BASE_URL || 'http://localhost:80';
+const ssrAppConfig: AppConfig = { apiBaseUrl: ssrApiBaseUrl };
+
 const serverAppConfig = {
   ...appConfig,
   providers: [
     ...appConfig.providers,
     { provide: APP_ID, useValue: 'server' },
+    { provide: APP_CONFIG, useValue: ssrAppConfig },
     provideServerRendering(withRoutes(serverRoutes)),
   ],
 };

vitest.config.ts

@@ -3,7 +3,7 @@ export default {
   test: {
     globals: true,
     environment: 'jsdom',
-    include: ['src/**/*.spec.ts'],
+    include: ['src/**/*.spec.ts', 'server.spec.ts'],
     setupFiles: ['src/test-setup.ts'],
     reporters: ['default'],
     coverage: {