use mkdtemp

main.ts

@@ -1,3 +1,6 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
 import util from "node:util";
 import { createBrowser } from "./browser";
 import { createDatabase } from "./database";
@@ -174,7 +177,9 @@ const options = {
           db,
           browser,
         });
-        const dir = `${args.values["out-dir"]!}/${book.id}`;
+        const dir = await fs.mkdtemp(
+          path.join(os.tmpdir(), `gadl-${book.id}-`),
+        );
         await platform.download(dir, book);
         await library.archive(dir, book, {
           outDir: args.values["out-dir"]!,

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@fogtype/gadl",
-  "version": "1.3.1",
+  "version": "1.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@fogtype/gadl",
-      "version": "1.3.1",
+      "version": "1.4.0",
       "license": "AGPL-3.0",
       "dependencies": {
         "fflate": "^0.8.1",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@fogtype/gadl",
-  "version": "1.3.1",
+  "version": "1.4.0",
   "license": "AGPL-3.0",
   "type": "module",
   "bin": "bin/run.js",

platform.ts

@@ -44,7 +44,6 @@ export function createPlatform(opts: {
     ...platform,
 
     async download(dir: string, book: Book): Promise<void> {
-      await fs.mkdir(path.dirname(dir), { recursive: true });
       await fs.mkdir(dir);
 
       const files: Array<() => Promise<Blob>> = await platform.getFiles(book);