ci: throw error when a file is missing (#242)

fixes #242

rollup.config.js

@@ -12,6 +12,7 @@ import json from '@rollup/plugin-json';
 import copy from 'rollup-plugin-copy';
 import copyTransform from './rollup/copy-transform';
 import license from './rollup/license';
+import checkOutput from './rollup/check-output';
 
 const useServe = process.env.ROLLUP_SERVE === 'true';
 const output = useServe ? '.serve' : 'dist';
@@ -44,11 +45,12 @@ export default [
       dir: output,
       name: 'DockerRegistryUI',
       format: 'iife',
-      sourcemap: useServe
+      sourcemap: useServe,
     },
     plugins: [emptyDirectories(output)].concat(
       plugins,
-      html({ template: () => htmlUseref('./src/index.html', { developement: useServe, production: !useServe }) })
+      html({ template: () => htmlUseref('./src/index.html', { developement: useServe, production: !useServe }) }),
+      checkOutput(output)
     ),
   },
 ];

rollup/check-output.js

@@ -0,0 +1,40 @@
+import fs from 'fs';
+import path from 'path';
+
+const files = [
+  'docker-registry-ui.css',
+  'docker-registry-ui.js',
+  'fonts/MaterialIcons-Regular.eot',
+  'fonts/MaterialIcons-Regular.svg',
+  'fonts/MaterialIcons-Regular.ttf',
+  'fonts/MaterialIcons-Regular.woff',
+  'fonts/MaterialIcons-Regular.woff2',
+  'fonts/Roboto-Bold.ttf',
+  'fonts/Roboto-Bold.woff',
+  'fonts/Roboto-Bold.woff2',
+  'fonts/Roboto-Light.ttf',
+  'fonts/Roboto-Light.woff',
+  'fonts/Roboto-Light.woff2',
+  'fonts/RobotoMono-Regular.eot',
+  'fonts/RobotoMono-Regular.ttf',
+  'fonts/RobotoMono-Regular.woff',
+  'fonts/RobotoMono-Regular.woff2',
+  'fonts/Roboto-Regular.eot',
+  'fonts/Roboto-Regular.ttf',
+  'fonts/Roboto-Regular.woff',
+  'fonts/Roboto-Regular.woff2',
+  'images/docker-logo.svg',
+  'index.html',
+];
+
+export default function (output) {
+  return {
+    name: 'check-output',
+    writeBundle: () => {
+      const missingFile = files.find((file) => !fs.existsSync(path.join(output, file)));
+      if (missingFile) {
+        throw new Error(`File ${missingFile} is missing after build`);
+      }
+    },
+  };
+}