chore: improve error reporting when config.json exists with invalid json (#2166)

Reviewed-on: #2166
Co-authored-by: Sainan <63328889+Sainan@users.noreply.github.com>
Co-committed-by: Sainan <63328889+Sainan@users.noreply.github.com>

src/index.ts

@@ -1,9 +1,14 @@
 // First, init config.
 import { config, loadConfig } from "@/src/services/configService";
+import fs from "fs";
 try {
     loadConfig();
 } catch (e) {
-    console.log("ERROR: Failed to load config.json. You can copy config.json.example to create your config.json.");
+    if (fs.existsSync("config.json")) {
+        console.log("Failed to load config.json: " + (e as Error).message);
+    } else {
+        console.log("Failed to load config.json. You can copy config.json.example to create your config.json.");
+    }
     process.exit(1);
 }
 

src/services/configWatcherService.ts

@@ -13,7 +13,7 @@ fs.watchFile(configPath, () => {
         try {
             loadConfig();
         } catch (e) {
-            logger.error("Failed to reload config.json. Did you delete it?! Execution cannot continue.");
+            logger.error("FATAL ERROR: Config failed to be reloaded: " + (e as Error).message);
             process.exit(1);
         }
         validateConfig();