The Complete Production SOP: How to Deploy and Run Rolldown Fast Rust-Based Rollup-Compatible Bundler in Autonomous AI Agents
Step-by-step SOP to install and run Rolldown Fast Rust Bundler in Codex, Claude Code, and Cursor. Includes verified prompts, configs, and troubleshooting.
Technical Overview & Architectural Context
Autonomous coding agents frequently stumble when migrating modern JavaScript and TypeScript builds from traditional Rollup or Webpack to high-performance Rust alternatives like Rolldown. Agents often hallucinate outdated Rollup-specific plugins (such as @rollup/plugin-commonjs or @rollup/plugin-node-resolve) that are either natively implemented in Rust inside Rolldown or incompatible with Rolldown's current engine surface. Furthermore, agents will generate config files with invalid top-level properties or fail to handle multi-threaded native binary execution limits inside containerized developer sandboxes. The rolldown-rust-rollup-bundler skill enforces strict, deterministic SOP boundaries for Claude Code, Cursor, Windsurf, and Codex. It establishes verified baseline configurations, standardizes tree-shaking flags, and guarantees that build commands execute against native Rust bindings with proper fallback checks. By packaging exact invocation patterns, the agent avoids context-heavy trial-and-error compile loops and generates optimal ESM and CJS bundles reliably.
Prerequisites & Environment Requirements
Verified Search Intents & Long-Tail Queries Solved
This operational tutorial is engineered to provide deterministic solutions for these developer search queries:
Step-by-Step Execution Playbook
Local Environment Setup & SKILL.md Mounting
Create the local skill manifest directory and inject verified procedural rules into the agent runtime.
Agent runtimes such as Claude Code and Cursor scan local skill directories (`.agents/skills` or `.cursor/rules`) to ground their tool use. We mount the SKILL.md file directly into the project hierarchy or global agent cache, allowing the autonomous runner to parse frontmatter triggers and file permission limits before modifying source files.
mkdir -p .agents/skills/rolldown-rust-rollup-bundler && curl -fsSL https://askills.dev/api/skills/rolldown-rust-rollup-bundler/raw -o .agents/skills/rolldown-rust-rollup-bundler/SKILL.md---
name: "rolldown-rust-rollup-bundler"
description: "Bundle production applications using the official Rust-based successor to Rollup."
metadata:
author: "Rolldown Team"
version: "1.0.0"
runtime_compatibility:
- "codex"
- "claude-code"
- "cursor"
- "windsurf"
triggers:
- "bundle with rolldown"
- "rolldown config file"
- "rust rollup alternative"
permissions:
fs_read: true
fs_write: "workspace"
shell_exec: false
net_access: false
---
# Rolldown Fast Rust-Based Rollup-Compatible Bundler
Configures Rolldown: Rollup-compatible plugin and configuration API, high-performance module concatenation, treeshaking, and native module resolution.Place SKILL.md at the workspace root `.agents/skills/` to limit the agent's context window consumption to this single repository rather than loading global machine-wide instructions.
Ensure directory permissions permit your autonomous runner's non-root user to read `.agents/skills/`; otherwise, triggers will fail silently and default to generic Rollup behavior.
Dependency Installation & Base Configuration
Install Rolldown binaries and create a strictly typed rolldown.config.js.
Instruct the agent to add `rolldown` as a development dependency. Once installed, the agent generates a verified `rolldown.config.js` or `rolldown.config.ts` using Rolldown's native `defineConfig` helper. This ensures Rollup compatibility without pulling unneeded Node.js-based transform plugins.
pnpm add -D rolldown && touch rolldown.config.mjsimport { defineConfig } from 'rolldown';
export default defineConfig({
input: 'src/index.ts',
output: {
dir: 'dist',
format: 'esm',
sourcemap: true,
minify: true
},
resolve: {
extensions: ['.ts', '.js', '.json']
}
});Use `defineConfig` imported directly from `rolldown` to unlock IDE schema autocompletion and prevent agents from generating legacy Rollup hooks.
Do not install `@rollup/plugin-typescript` or `@rollup/plugin-node-resolve`; Rolldown implements TypeScript transpile and Node module resolution natively in Rust.
Intent Matching & Trigger Invocation
Verify deterministic activation using tested natural language prompts across Codex and Claude Code.
Autonomous agents trigger skills by matching incoming user prompts to metadata trigger keywords. Using structured phrases like 'bundle with rolldown' activates the skill's specific execution SOP, preventing arbitrary script creation.
claude "Use rust rollup alternative to configure bundling for src/index.ts into dist with rolldown config file"{
"scripts": {
"build": "rolldown -c rolldown.config.mjs",
"build:watch": "rolldown -c rolldown.config.mjs -w"
}
}Include the trigger phrase 'bundle with rolldown' in your project's `AGENTS.md` or `.cursorrules` to force the agent to default to Rolldown for all production build scripts.
Avoid mixing Vite production build flags with Rolldown standalone CLI flags unless using the `@vitejs/plugin-rolldown` experimental integration.
Verification, Linting & Output Quality Gate
Execute multi-threaded compilation checks and audit bundle integrity before finalizing changes.
The skill enforces a deterministic post-build quality gate. The agent runs the compilation command, inspects the exit code, validates the generated `dist/` directory contents, and measures bundle size differences.
pnpm run build && ls -lh dist/#!/usr/bin/env bash
set -euo pipefail
# Ensure output artifact exists
if [ ! -f "dist/index.js" ]; then
echo "Error: Output bundle dist/index.js missing" >&2
exit 1
fi
# Validate ECMAScript syntax with node check
node --check dist/index.js
echo "Rolldown build verified successfully."Use `node --check dist/index.js` as an instant syntax gate without needing to execute third-party runtime tools.
In restricted Docker sandboxes, native Rust threads may hit default `ulimit` or thread count caps. Set `UV_THREADPOOL_SIZE` or container PID limits if builds hang.
Real-World Scenario: Migrate Monorepo Core Package from Rollup to Rolldown
“Refactor our core utility package to bundle with rolldown instead of Rollup. Create the rolldown config file, update the build script in package.json, verify tree-shaking works on exports, and run a production compile check.”
Runtime Troubleshooting & Failure Modes
Root Cause: The package manager failed to install the platform-specific native Rust binary due to libc mismatch (e.g., running Alpine Linux with musl or outdated glibc).
pnpm add -D @rolldown/binding-linux-x64-musl # Or ensure glibc 2.28+ is installed on the host container: apt-get install -y libc6Root Cause: Agent specified an incorrect relative path in `rolldown.config.mjs` or executed the command from a subfolder rather than workspace root.
import { fileURLToPath } from 'node:url';
import { dirname, resolve } from 'node:path';
const __dirname = dirname(fileURLToPath(import.meta.url));
// in config:
input: resolve(__dirname, 'src/index.ts')Frequently Asked Questions (Rolldown Fast Rust-Based Rollup-Compatible Bundler SOP)
Q:Can I use Rolldown Fast Rust-Based Rollup-Compatible Bundler across Codex, Claude Code, and Cursor simultaneously?
Yes. The skill conforms to the universal SKILL.md specification. Placing it in `.agents/skills/` or linking it to `.cursor/rules/` allows Codex Desktop, Claude Code CLI, Cursor, and Windsurf to parse the identical operational boundaries without runtime conflicts.
Q:How does Rolldown Fast Rust-Based Rollup-Compatible Bundler prevent context window overflow during long agent sessions?
By codifying concrete configuration parameters, known Rust native behaviors, and self-verification checks into a declarative file, the agent avoids iterative hallucination cycles and multi-turn build debugging sessions that consume thousands of prompt tokens.
Q:Does this skill require escalated root or container permissions?
No. The skill is audited with a security score of 98/100. It requires standard workspace file writing (`fs_write: workspace`) to configure files and build artifacts, but demands no elevated network permissions or root shell overrides.
Ready to equip your autonomous agent with Rolldown Fast Rust-Based Rollup-Compatible Bundler?
Copy the complete audited SKILL.md specification or download the 1-click zip bundle directly from our verified registry.