refactor: switch from go to bun

apps/server/src/core/config.ts

@@ -0,0 +1,25 @@
+import { type } from "arktype";
+import "dotenv/config";
+
+const envSchema = type({
+	NODE_ENV: type
+		.enumerated("development", "production", "test")
+		.default("development"),
+	DB_FILE_NAME: "string",
+}).pipe((s) => ({
+	__prod__: s.NODE_ENV === "production",
+	environment: s.NODE_ENV,
+	dbFileName: s.DB_FILE_NAME,
+}));
+
+const parseConfig = (env: unknown) => {
+	const result = envSchema(env);
+
+	if (result instanceof type.errors) {
+		throw new Error(`Invalid environment variables: ${result.toString()}`);
+	}
+
+	return result;
+};
+
+export const config = parseConfig(process.env);