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import type { CreatePreviewServer } from 'astro';
import type { createExports } from './server';
import http from 'http';
import { fileURLToPath } from 'url';
import { createServer } from './http-server.js';
const preview: CreatePreviewServer = async function({
client,
serverEntrypoint,
host,
port,
}) {
type ServerModule = ReturnType<typeof createExports>;
type MaybeServerModule = Partial<ServerModule>;
let ssrHandler: ServerModule['handler'];
try {
process.env.ASTRO_NODE_AUTOSTART = 'disabled';
const ssrModule: MaybeServerModule = await import(serverEntrypoint.toString());
if(typeof ssrModule.handler === 'function') {
ssrHandler = ssrModule.handler;
} else {
throw new Error(`The server entrypoint doesn't have a handler. Are you sure this is the right file?`);
}
} catch(_err) {
throw new Error(`The server entrypoint ${fileURLToPath} does not exist. Have you ran a build yet?`);
}
const handler: http.RequestListener = (req, res) => {
ssrHandler(req, res, (ssrErr: any) => {
if (ssrErr) {
res.writeHead(500);
res.end(ssrErr.toString());
} else {
res.writeHead(404);
res.end();
}
});
};
const server = createServer({
client,
port,
host,
}, handler);
// eslint-disable-next-line no-console
console.log(`Preview server listening on http://${host}:${port}`);
return server;
}
export {
preview as default
};
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