Save openapi.json to dist/openapi.json (#286)

src/server/index.ts

@@ -12,6 +12,7 @@ import { withExpress } from "./middleware/express";
 import { withRequestLogs } from "./middleware/logs";
 import { withOpenApi } from "./middleware/open-api";
 import { withRoutes } from "./routes";
+import { writeOpenApiToFile } from "./utils/openapi";
 
 const __dirname = new URL(".", import.meta.url).pathname;
 
@@ -65,10 +66,7 @@ const main = async () => {
     },
   );
 
-  fs.writeFileSync(
-    "./dist/openapi.json",
-    JSON.stringify(server.swagger(), undefined, 2),
-  );
+  writeOpenApiToFile(server);
 };
 
 main();

src/server/utils/openapi.ts

@@ -0,0 +1,13 @@
+import { FastifyInstance } from "fastify";
+import fs from "fs";
+
+export const writeOpenApiToFile = (server: FastifyInstance) => {
+  try {
+    fs.writeFileSync(
+      "./dist/openapi.json",
+      JSON.stringify(server.swagger(), undefined, 2),
+    );
+  } catch {
+    // no-op
+  }
+};