From: Stefan Gasser <redacted>
Date: Fri, 9 Jan 2026 07:28:55 +0000 (+0100)
Subject: Fix EISDIR error when config.yaml is a directory (#3)
X-Git-Url: http://git.99rst.org/?a=commitdiff_plain;h=2a19bbecb823f0651a59d77a846f2e51ae4a1c28;p=sgasser-llm-shield.git

Fix EISDIR error when config.yaml is a directory (#3)

Add isFile() check before reading config to give a clear error message
when Docker creates a directory instead of mounting a missing file.

Fixes #2
---

diff --git a/src/config.ts b/src/config.ts
index 318d6ae..a5bc8fc 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,4 +1,4 @@
-import { existsSync, readFileSync } from "node:fs";
+import { existsSync, readFileSync, statSync } from "node:fs";
 import { parse as parseYaml } from "yaml";
 import { z } from "zod";
 
@@ -181,6 +181,11 @@ export function loadConfig(configPath?: string): Config {
 
   for (const path of paths) {
     if (existsSync(path)) {
+      if (!statSync(path).isFile()) {
+        throw new Error(
+          `'${path}' is a directory, not a file. Run: cp config.example.yaml config.yaml`,
+        );
+      }
       configFile = readFileSync(path, "utf-8");
       break;
     }