diff --git a/index.ts b/index.ts
index ae4d115..1f57d0a 100755
--- a/index.ts
+++ b/index.ts
@@ -55,11 +55,7 @@ function parseArgs() {
         .choices(["auto", "google", "yandex"])
         .default("auto")
     )
-    .option(
-      "-c, --cookie [path]",
-      "google.com cookie header value file path",
-      (val) => fs.readFileSync(resolvePath(val, ["txt"])).toString("utf-8")
-    )
+    .option("-c, --cookie [value]", "google.com cookie header value")
     .argument("image <path>", "input image file path", (val) =>
       resolvePath(val, ["jpg", "jpeg", "png"])
     )
diff --git a/itame.py b/itame.py
index fde569e..ce7f9bd 100644
--- a/itame.py
+++ b/itame.py
@@ -3,6 +3,16 @@ from pathlib import Path
 import subprocess
 import sys
 
+
+try:
+    subprocess.run(
+        ["bun", "--version"], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL
+    )
+except FileNotFoundError:
+    print("bun not found, please run the following command to install it:")
+    print('powershell -c "irm bun.sh/install.ps1|iex"')
+    sys.exit(1)
+
 file_dir = Path(__file__).parent
 itame_vendor_dir = file_dir / "itame"
 
@@ -10,19 +20,18 @@ if not itame_vendor_dir.exists():
     print("script must be placed in the parent directory of the vendor itame directory")
     sys.exit(1)
 
-os.chdir(itame_vendor_dir)
+node_modules_dir = itame_vendor_dir / "node_modules"
+entrypoint = itame_vendor_dir / "index.ts"
 
-if not os.path.exists(".initialized"):
-    p = subprocess.run(["powershell", "-c", "irm bun.sh/install.ps1|iex"])
-    if p.returncode != 0:
-        print("failed to install bun")
-        sys.exit(1)
-    open(".initialized", "w").close()
+if not node_modules_dir.exists():
+    old_dir = os.getcwd()
+    os.chdir(itame_vendor_dir)
 
-if not os.path.exists("node_modules"):
     p = subprocess.run(["bun", "i"])
     if p.returncode != 0:
         print("failed to install node modules")
         sys.exit(1)
 
-subprocess.run(["bun", "run", "index.ts"] + sys.argv[1:])
+    os.chdir(old_dir)
+
+subprocess.run(["bun", "run", str(entrypoint)] + sys.argv[1:])