File size: 2,659 Bytes
ca51841 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | import { defineConfig } from 'vite';
import http from 'node:http';
import https from 'node:https';
/**
* Dev-only CORS proxy middleware.
* Browser fetches /lw-proxy/<path> with X-LW-Target header → Vite server forwards to target (no CORS).
*/
const lwProxyPlugin = {
name: 'lw-proxy',
configureServer(server) {
server.middlewares.use('/lw-proxy', (req, res) => {
const target = req.headers['x-lw-target'];
if (!target) {
res.writeHead(400, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ error: 'Missing X-LW-Target header' }));
return;
}
let targetUrl;
try {
// req.url is the path AFTER /lw-proxy (Connect strips the mount point)
targetUrl = new URL(req.url ?? '/', target);
} catch {
res.writeHead(400, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ error: 'Invalid target URL' }));
return;
}
const httpModule = targetUrl.protocol === 'https:' ? https : http;
// Forward headers, stripping browser/CORS-related ones
const fwdHeaders = {};
for (const [k, v] of Object.entries(req.headers)) {
const kl = k.toLowerCase();
if (kl === 'x-lw-target' || kl === 'host' || kl === 'origin' || kl === 'referer') continue;
fwdHeaders[k] = v;
}
fwdHeaders['host'] = targetUrl.host;
const options = {
hostname: targetUrl.hostname,
port: targetUrl.port || (targetUrl.protocol === 'https:' ? 443 : 80),
path: targetUrl.pathname + (targetUrl.search || ''),
method: req.method,
headers: fwdHeaders,
};
const proxyReq = httpModule.request(options, (proxyRes) => {
res.writeHead(proxyRes.statusCode ?? 200, proxyRes.headers);
proxyRes.pipe(res); // stream response directly (supports SSE)
});
proxyReq.on('error', (err) => {
if (!res.headersSent) {
res.writeHead(502, { 'Content-Type': 'application/json' });
}
res.end(JSON.stringify({ error: err.message }));
});
req.pipe(proxyReq); // forward request body (needed for POST /v1/chat/completions)
});
},
};
export default defineConfig({
plugins: [lwProxyPlugin],
build: {
target: 'esnext',
minify: 'esbuild',
chunkSizeWarningLimit: 600,
rollupOptions: {
output: {
manualChunks(id) {
if (id.includes('highlight.js')) return 'hljs';
if (id.includes('marked')) return 'marked';
},
},
},
},
test: {
environment: 'jsdom',
globals: true,
setupFiles: ['./tests/setup.js'],
},
});
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