Can i generate an OpenAPI automatically?

[sipao]

thanks for help.

[mdujava]

I was able to generate OpenApi spec with https://github.com/jlalmes/trpc-openapi, but I am not able to start server at the same time.

src/routes/openapi/+page.server.ts

import type { PageServerLoad } from './$types';
import { openApiDocument } from '$lib/server/openapi';

export const load: PageServerLoad = async (event) => {
    console.log(openApiDocument);
    return {openApiDocument};
};

src/lib/server/openapi.ts:

import http from 'http';
import { appRouter } from './routes/_app'
import { generateOpenApiDocument } from 'trpc-openapi';
import { createOpenApiHttpHandler } from 'trpc-openapi';
import { createContext } from './context';

export const openApiDocument = generateOpenApiDocument(appRouter, {
  title: 'MyAPI',
  version: '0.0.1',
  baseUrl: 'http://localhost:3001/',
});

const server = http.createServer(createOpenApiHttpHandler({ router: appRouter, responseMeta: (data) => {
    if (data && data.ctx && data.ctx.res) {
        data.ctx.res.setHeader('Access-Control-Allow-Origin', '*');
        data.ctx.res.setHeader('Access-Control-Request-Method', '*');
        data.ctx.res.setHeader('Access-Control-Allow-Methods', 'OPTIONS, GET');
        data.ctx.res.setHeader('Access-Control-Allow-Headers', '*');
        console.log(data.ctx.res);
    }
}
, createContext }));

server.listen(3001);

so when I hit /openapi including '$lib/server/openapi' will start a openapi server on a port e.g. 3001.
in pnpm dev: hot reload will fail on Error: listen EADDRINUSE: address already in use :::3001