Semi improve error output

src/config.ts

@@ -1,5 +1,6 @@
 import { readFileSync } from "fs"
-import { z } from "zod"
+import { exit } from "process"
+import { ZodError, z } from "zod"
 export const defaultInterval = 60
 export const defaultNotifyInterval = 300
 
@@ -47,4 +48,21 @@ const configSchema = z.object({
 
 export type Config = z.infer<typeof configSchema>
 
-export const config = configSchema.parse(JSON.parse(readFileSync("./config.json").toString()))
+const loadConfig = () => { 
+    try { 
+    return configSchema.parse(JSON.parse(readFileSync("./config.json").toString()))
+    }
+    catch(e) {
+        const err = e as ZodError | SyntaxError
+        if (err instanceof ZodError) {
+            console.error(err.flatten())
+        }
+        else {
+            console.error(err.message)
+        }
+        
+        exit(1)
+    }
+}
+
+export const config = loadConfig()