I’m having trouble with serving and downloading the Swagger JSON file for my API documentation. When I try to access the Swagger JSON file, it just renders the Swagger UI instead. I need the JSON file to import the API documentation into Postman.

These both the URLs just rendering swagger UI.
http://127.0.0.1:5001/nf3tix/us-central1/cloud/api-docs/swagger.json and
http://127.0.0.1:5001/nf3tix/us-central1/cloud/api-docs/

Not sure where is it breaking.

Here is my swagger-config.js

require("dotenv").config();
const swaggerJsDoc = require("swagger-jsdoc");

const options = {
  definition: {
    openapi: "3.0.0",
    info: {
      title: "NF3TIX API Documentation",
      version: "1.0.0",
      description:
        "REST APIs documentation for NF3TIX server running on firebase functions with expressJs",
    },
    servers: [
      {
        url: process.env.SERVER_URL,
        description: "Firebase clude function APIs",
      },
    ],
    components: {
      securitySchemes: {
        BearerAuth: {
          type: "http",
          scheme: "bearer",
          bearerFormat: "JWT",
        },
      },
    },
    security: [
      {
        BearerAuth: [],
      },
    ],
  },
  apis: ["./routes/*.js"],
};

const swaggerSpec = swaggerJsDoc(options);

module.exports = swaggerSpec;

and this is my server file

const { onRequest } = require("firebase-functions/v2/https");
const logger = require("firebase-functions/logger");
const express = require("express");
const cors = require("cors");
const swaggerUi = require("swagger-ui-express");
const swaggerSpec = require("./swagger-config");
const path = require("path");

const app = express();
app.use(cors({ origin: true }));
app.use(express.json());
app.use(express.static(path.join(__dirname, "static")));
app.set("views", path.join(__dirname, "views"));
app.set("view engine", "ejs");

app.use(
  "/api-docs",
  swaggerUi.serve,
  swaggerUi.setup(swaggerSpec, {
    swaggerOptions: { url: "/api-docs/swagger.json" },
  })
);

app.use("/api", require("./routes/index"));

exports.cloud = onRequest(app);