remove ai from peerDependencies

- import unzipper dynamically and show error if not installed

Author: dead8309

package.json

@@ -59,20 +59,17 @@
     "mime-types": "^2.1.35",
     "pdf-ts": "^0.0.2",
     "turndown": "^7.2.0",
-    "xlsx": "^0.18.5"
+    "xlsx": "^0.18.5",
+    "ai": "^4.0.22"
   },
   "peerDependencies": {
-    "ai": "^4.0.22",
     "youtube-transcript": "^1.2.1",
     "unzipper": "^0.12.3"
   },
   "peerDependenciesMeta": {
     "youtube-transcript": {
       "optional": true
     },
-    "ai": {
-      "optional": true
-    },
     "unzipper": {
       "optional": true
     }

src/converters/zip.ts

@@ -1,7 +1,6 @@
 import { ConverterOptions, ConverterResult, DocumentConverter } from "../types";
 import * as fs from "fs/promises";
 import * as path from "path";
-import * as unzipper from "unzipper";
 
 export class ZipConverter implements DocumentConverter {
   async convert(
@@ -29,6 +28,15 @@ export class ZipConverter implements DocumentConverter {
         text_content: `[ERROR] Invalid zip file path: ${localPath}`
       };
     }
+    let unzipper;
+    try {
+      unzipper = await import("unzipper").then((mod) => mod.default);
+    } catch (error) {
+      console.error(
+        "Optional dependency 'unzipper' is not installed. Run `npm install unzipper` to enable this feature."
+      );
+      return null;
+    }
     try {
       await fs.mkdir(newFolder, { recursive: true });
       const zip = await unzipper.Open.file(localPath);