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Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com> Co-authored-by: Michael Drury <michael.drury@n8n.io> Co-authored-by: Arvin A <51036481+DeveloperTheExplorer@users.noreply.github.com> Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Co-authored-by: Arvin Ansari <arvin.ansari@n8n.io> Co-authored-by: bjorger <50590409+bjorger@users.noreply.github.com> Co-authored-by: Eugene <eugene@n8n.io> Co-authored-by: Michael Drury <me@michaeldrury.co.uk> Co-authored-by: Robin Braumann <robin.braumann@n8n.io> Co-authored-by: Rob Hough <robhough180@gmail.com>
92 lines
3.2 KiB
JavaScript
92 lines
3.2 KiB
JavaScript
#!/usr/bin/env node
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/**
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* Pre-bundles @n8n/agents (Tool SDK) + zod into a single CJS string consumed
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* by the V8 isolate at runtime (see src/modules/agents/runtime/agent-secure-runtime.ts).
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*
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* Running this at build time means:
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* - No esbuild on the hot path at first-request
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* - No esbuild native binary needed in the Docker image at runtime
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*
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* Output: packages/cli/dist/agent-library-bundle.js
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*/
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import * as esbuild from 'esbuild';
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import { createRequire } from 'module';
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import path from 'path';
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import { fileURLToPath } from 'url';
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import { writeFileSync, mkdirSync } from 'fs';
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const __dirname = path.dirname(fileURLToPath(import.meta.url));
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const CLI_ROOT = path.resolve(__dirname, '..');
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const OUTPUT_FILE = path.resolve(CLI_ROOT, 'dist', 'agent-library-bundle.js');
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export async function buildAgentLibraryBundle({ silent = false } = {}) {
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// Resolve @n8n/agents from the cli package so we get the workspace-linked
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// copy regardless of where this script is invoked from.
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const requireFromCli = createRequire(path.join(CLI_ROOT, 'package.json'));
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const toSlash = (p) => p.replace(/\\/g, '/');
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const agentsPath = toSlash(requireFromCli.resolve('@n8n/agents'));
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const agentsSrcDir = agentsPath.replace(/dist\/index\.js$/, 'dist/');
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// Import only the Tool builder (needed for describe() + handler execution)
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// rather than the full barrel — the runtime pulls in MCP SDK, AI provider
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// SDKs, database drivers, etc., none of which are usable inside the isolate.
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const shim = `
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const { Tool } = require('${agentsSrcDir}sdk/tool');
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const zod = require('zod');
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globalThis.__modules = {
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'@n8n/agents': { Tool },
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'zod': zod,
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};
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`;
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const result = await esbuild.build({
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stdin: { contents: shim, loader: 'js', resolveDir: CLI_ROOT },
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bundle: true,
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format: 'cjs',
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target: 'es2022',
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platform: 'node',
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write: false,
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treeShaking: true,
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// The shim only pulls in `sdk/tool` (+ zod), which is pure JS with no
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// Node built-in or native deps — esbuild currently externalises nothing.
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// `node:*` stays as a safety net so that if some future transitive dep
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// picks up a `node:<builtin>` import, esbuild marks it external rather
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// than trying to bundle a built-in (which would blow up inside the
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// isolate, which has no Node globals anyway).
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external: ['node:*'],
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define: {
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'process.env.NODE_ENV': '"production"',
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},
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});
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if (result.errors.length > 0) {
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throw new Error(
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`Failed to bundle agent library: ${result.errors.map((e) => e.text).join('\n')}`,
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);
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}
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const bundle = result.outputFiles[0].text;
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mkdirSync(path.dirname(OUTPUT_FILE), { recursive: true });
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writeFileSync(OUTPUT_FILE, bundle, 'utf8');
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if (!silent) {
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const sizeKB = (bundle.length / 1024).toFixed(1);
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const sizeMB = (bundle.length / (1024 * 1024)).toFixed(2);
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console.log(
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`[bundle-agent-library] Wrote ${path.relative(CLI_ROOT, OUTPUT_FILE)} — ${sizeKB} KB (${sizeMB} MB)`,
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);
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}
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return OUTPUT_FILE;
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}
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// Allow running as a standalone script: `node scripts/bundle-agent-library.mjs`
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const isMain = process.argv[1] && path.resolve(process.argv[1]) === fileURLToPath(import.meta.url);
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if (isMain) {
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buildAgentLibraryBundle().catch((e) => {
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console.error(e);
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process.exit(1);
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});
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}
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