repomix-mirror/website/server/warmup.mjs

/**
 * Warmup script for Node.js compile cache generation.
 *
 * This script is executed during Docker build to pre-generate V8 compile cache.
 * By loading all modules at build time, subsequent cold starts will use
 * the cached compiled code, reducing startup latency.
 *
 * @see https://nodejs.org/api/module.html#moduleenablecompilecachedir
 */

import { enableCompileCache, flushCompileCache } from 'node:module';

// Enable compile cache (uses NODE_COMPILE_CACHE env var for directory)
enableCompileCache();

// Set warmup mode to prevent server from actually starting
process.env.WARMUP_MODE = 'true';

// Import all bundled modules to trigger compilation
import { readdirSync } from 'node:fs';

const distDir = new URL('./dist-bundled/', import.meta.url);
const allModules = readdirSync(distDir).filter((f) => f.endsWith('.mjs'));
for (const file of allModules) {
  await import(`./dist-bundled/${file}`);
}

// Flush cache to disk immediately (default is on process exit)
flushCompileCache();

console.log('Compile cache generated successfully');

// Explicitly exit the process
// Some modules (like winston/logging) may keep the event loop alive
process.exit(0);