fix: set default code when new language is selected (#97)

Author: harish-sethuraman

src/components/options.tsx

@@ -15,6 +15,7 @@ import {
 	parsers,
 	sourceTypes,
 	versions,
+	defaultCode,
 } from "@/lib/const";
 import { Button } from "./ui/button";
 import { Label } from "./ui/label";
@@ -208,6 +209,13 @@ export const Options: FC = () => {
 		const language = value as Language;
 		explorer.setLanguage(language);
 
+		if (explorer.code[language] === undefined) {
+			explorer.setCode({
+				...explorer.code,
+				[language]: defaultCode[language],
+			});
+		}
+
 		if (language !== "javascript" && explorer.tool !== "ast") {
 			explorer.setTool("ast");
 		}