78 lines
2 KiB
TypeScript
78 lines
2 KiB
TypeScript
import type { CreatePreviewServer } from 'astro';
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import { AstroError } from 'astro/errors';
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import type http from 'node:http';
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import { fileURLToPath } from 'node:url';
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import { getNetworkAddress } from './get-network-address.js';
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import { createServer } from './http-server.js';
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import type { createExports } from './server.js';
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const preview: CreatePreviewServer = async function ({
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client,
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serverEntrypoint,
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host,
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port,
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base,
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logger,
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}) {
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type ServerModule = ReturnType<typeof createExports>;
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type MaybeServerModule = Partial<ServerModule>;
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let ssrHandler: ServerModule['handler'];
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try {
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process.env.ASTRO_NODE_AUTOSTART = 'disabled';
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const ssrModule: MaybeServerModule = await import(serverEntrypoint.toString());
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if (typeof ssrModule.handler === 'function') {
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ssrHandler = ssrModule.handler;
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} else {
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throw new AstroError(
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`The server entrypoint doesn't have a handler. Are you sure this is the right file?`
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);
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}
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} catch (err) {
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if ((err as any).code === 'ERR_MODULE_NOT_FOUND') {
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throw new AstroError(
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`The server entrypoint ${fileURLToPath(
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serverEntrypoint
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)} does not exist. Have you ran a build yet?`
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);
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} else {
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throw err;
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}
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}
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const handler: http.RequestListener = (req, res) => {
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ssrHandler(req, res);
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};
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const baseWithoutTrailingSlash: string = base.endsWith('/')
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? base.slice(0, base.length - 1)
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: base;
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function removeBase(pathname: string): string {
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if (pathname.startsWith(base)) {
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return pathname.slice(baseWithoutTrailingSlash.length);
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}
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return pathname;
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}
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const server = createServer(
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{
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client,
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port,
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host,
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removeBase,
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},
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handler
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);
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const address = getNetworkAddress('http', host, port);
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if (host === undefined) {
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logger.info(
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`Preview server listening on \n local: ${address.local[0]} \t\n network: ${address.network[0]}\n`
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);
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} else {
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logger.info(`Preview server listening on ${address.local[0]}`);
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}
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return server;
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};
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export { preview as default };
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