mantis-app/templates/mantis-todo/apps/web-client/src/server/middleware/cors.ts

M.A.N.T.I.S (MongoDB, Analog, Nx, Tailwind CSS, Ionic, Storybook) is not just a CLI tool; it's your passport to a seamless full-stack project launch.

import { defineEventHandler, handleCors } from 'h3';

const frontendUrls = import.meta.env.FRONTEND_URLS;
if (typeof frontendUrls !== 'string') {
  throw new Error('FRONTEND_URLS environment variable is not set');
}

export default defineEventHandler((event) => {
  handleCors(event, {
    methods: '*',
    allowHeaders: '*',
    origin: frontendUrls.split(',').map((url) => url.trim()),
  });
});