Added support reading app files form index.html

index.js

@@ -19,6 +19,7 @@ const Funnel = require('broccoli-funnel');
 const p = require('ember-cli-preprocess-registry/preprocessors');
 const fastbootTransform = require('fastboot-transform');
 const existsSync = fs.existsSync;
+const cheerio = require('cheerio');
 
 let checker;
 function getVersionChecker(context) {
@@ -334,6 +335,7 @@ module.exports = {
   },
 
   postBuild(result) {
+    this._updateAppFilesInManifest(result.directory);
     if (this.fastboot) {
       // should we reload fastboot if there are only css changes? Seems it maynot be needed.
       // TODO(future): we can do a smarter reload here by running fs-tree-diff on files loaded
@@ -361,4 +363,41 @@ module.exports = {
 
     return checker.for('ember', 'bower');
   },
+
+  _updateAppFilesInManifest(appDir) {
+    const appFiles = this._getAppFilesFromIndexHtml(appDir);
+    const pkgPath = path.join(appDir, 'package.json');
+    const pkg = require(pkgPath);
+    const {
+      fastboot
+    } = pkg;
+
+    // Update manifest.appFiles in package.json, with appFiles defined in index.html
+    if(fastboot) {
+      const { manifest: { appFiles: manifestAppFiles } } = fastboot;
+      manifestAppFiles.splice(0, 1, ...appFiles);
+      fs.writeFileSync(pkgPath, JSON.stringify(pkg));
+    }
+  },
+
+  _getAppFilesFromIndexHtml(appDir) {
+    const indexHtml = fs.readFileSync(path.join(appDir, 'index.html'));
+    const $ = cheerio.load(indexHtml);
+    const scriptFileNameRegEx = /([a-zA-Z0-9_\.\-\(\):])+(\.js)/ig;
+    const filesToSkip = ['vendor.js','vendor-static.js','ember-cli-live-reload.js'];
+    const appFiles = [];
+
+    $('script').each(function(i, elem) {
+      const src = $(elem).attr('src');
+      if (src) {
+        const fileName = src.match(scriptFileNameRegEx)[0];
+        const filePath = path.join(appDir, 'assets', fileName);
+        if (fileName && existsSync(filePath) && !filesToSkip.includes(fileName)) {
+          appFiles.push(path.relative(appDir, filePath));
+        }
+      }
+    });
+
+    return appFiles;
+  }
 };

package.json

@@ -45,6 +45,7 @@
     "chai": "^4.1.2",
     "chai-fs": "^2.0.0",
     "chai-string": "^1.4.0",
+    "cheerio": "^1.0.0-rc.3",
     "co": "^4.6.0",
     "ember-ajax": "^3.1.0",
     "ember-cli": "~3.3.0",