copy assets to correct folder

packages/vite/index.d.ts

@@ -5,3 +5,4 @@ export * from './src/scripts.js';
 export * from './src/template-tag.js';
 export * from './src/addons.js';
 export * from './src/optimize-deps.js';
+export * from './src/assets.js';

packages/vite/index.mjs

@@ -4,3 +4,4 @@ export * from './src/hbs.js';
 export * from './src/scripts.js';
 export * from './src/template-tag.js';
 export * from './src/optimize-deps.js';
+export * from './src/assets.js';

packages/vite/src/assets.ts

@@ -0,0 +1,30 @@
+import { ResolverLoader } from '@embroider/core';
+import type { Plugin } from 'vite';
+import * as process from 'process';
+import { dirname, join } from 'path';
+import { copyFileSync, mkdirpSync } from 'fs-extra';
+
+
+
+export function assets(): Plugin {
+  const cwd = process.cwd();
+  const resolverLoader = new ResolverLoader(cwd);
+  const engines = resolverLoader.resolver.options.engines;
+  return {
+    name: 'assets',
+    enforce: 'pre',
+    async writeBundle(options) {
+      for (const engine of engines) {
+        engine.activeAddons.forEach((addon) => {
+          const pkg = resolverLoader.resolver.packageCache.ownerOfFile(addon.root);
+          if (!pkg || !pkg.isV2Addon()) return;
+          const assets = pkg.meta['public-assets'] || {};
+          Object.entries(assets).forEach(([path, dest]) => {
+            mkdirpSync(dirname(join(options.dir!, dest)))
+            copyFileSync(join(pkg.root, path), join(options.dir!, dest));
+          });
+        });
+      }
+    },
+  };
+}

tests/vite-app/vite.config.mjs

@@ -5,7 +5,8 @@ import {
   scripts,
   templateTag,
   optimizeDeps,
-} from "@embroider/vite";
+  assets,
+} from '@embroider/vite';
 import { resolve } from "path";
 import { babel } from "@rollup/plugin-babel";
 
@@ -18,6 +19,7 @@ export default defineConfig({
     templateTag(),
     scripts(),
     resolver(),
+    assets(),
 
     babel({
       babelHelpers: "runtime",