stage 8-step viewer

scripts/copy-viewer-assets.mjs

@@ -0,0 +1,36 @@
+// Copies vendor assets that need to ship in `public/` so they can be fetched
+// at runtime (wasm, etc). Run via npm pre-hooks — see package.json.
+import { copyFile, mkdir, access } from "node:fs/promises";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const ROOT = join(__dirname, "..");
+
+const copies = [
+  {
+    from: "node_modules/occt-import-js/dist/occt-import-js.wasm",
+    to: "public/vendor/occt-import-js.wasm",
+  },
+];
+
+async function main() {
+  for (const { from, to } of copies) {
+    const src = join(ROOT, from);
+    const dest = join(ROOT, to);
+    try {
+      await access(src);
+    } catch {
+      console.warn(`[copy-viewer-assets] missing: ${from} — did npm install run?`);
+      continue;
+    }
+    await mkdir(dirname(dest), { recursive: true });
+    await copyFile(src, dest);
+    console.log(`[copy-viewer-assets] ${from} → ${to}`);
+  }
+}
+
+main().catch((err) => {
+  console.error("[copy-viewer-assets] failed:", err);
+  process.exit(1);
+});