5 releases

0.0.5 Apr 18, 2024
0.0.4 Mar 25, 2024
0.0.3 Feb 15, 2024
0.0.2 Jan 30, 2024
0.0.1 Jan 30, 2024

#294 in Build Utils

25 downloads per month
Used in 5 crates (3 directly)

MIT license

255 lines


moon is a repository management, organization, orchestration, and notification tool for the web ecosystem, written in Rust. Many of the concepts within moon are heavily inspired from Bazel and other popular build systems, but tailored for our supported languages, primarily JavaScript and TypeScript.

Why use moon?

Working in the JavaScript ecosystem can be very involved, especially when it comes to managing a repository effectively. Which package manager to use? Which Node.js version to use? How to import node modules? How to build packages? So on and so forth. moon aims to streamline this entire process and provide a first-class developer experience.

  • Increased productivity - With Rust as our foundation, we can ensure robust speeds, high performance, and low memory usage. Instead of long builds blocking you, focus on your work.
  • Exceptional developer experience - As veterans of the JavaScript ecosystem, we're well aware of the pain points and frustrations. Our goal is to mitigate and overcome these obstacles.
  • Incremental adoption - At its core, moon has been designed to be adopted incrementally and is not an "all at once adoption". Migrate project-by-project, or task-by-task, it's up to you!
  • Reduced scripts confusion - package.json scripts can become unwieldy, very quickly. No more duplicating the same script into every package, or reverse-engineering which root scripts to use. With moon, all you need to know is the project name, and a task name.
  • Ensure correct versions - Whether it's Node.js or npm, ensure the same version of each tool is the same across every developer's environment. No more wasted hours of debugging.
  • Automation built-in - When applicable, moon will automatically install node_modules, or sync package dependencies, or even sync TypeScript project references.
  • And of course, the amazing list of features below!


Not all features are currently supported, view the documentation for an accurate list!


  • Smart hashing - Collects inputs from multiple sources to ensure builds are deterministic and reproducible.
  • Remote caching - Persists builds, hashes, and caches between teammates and CI/CD environments.
  • Integrated toolchain - Automatically downloads and installs explicit versions of Node.js and other tools for consistency across the entire workspace or per project.
  • Multi-platform - Runs on common development platforms: Linux, macOS, and Windows.


  • Project graph - Generates a project graph for dependency and dependent relationships.
  • Code generation - Easily scaffold new applications, libraries, tooling, and more!
  • Dependency workspaces - Works alongside package manager workspaces so that projects have distinct dependency trees.
  • Code ownership - Declare owners, maintainers, support channels, and more. Generate CODEOWNERS.


  • Dependency graph - Generates a dependency graph to increase performance and reduce workloads.
  • Action pipeline - Executes actions in parallel and in order using a thread pool and our dependency graph.
  • Action distribution - Distributes actions across multiple machines to increase throughput.
  • Incremental builds - With our smart hashing, only rebuild projects that have been touched since the last build.


  • Flakiness detection - Reduce flaky builds with automatic retries and passthrough settings.
  • Webhook events - Receive a webhook for every event in the pipeline. Useful for metrics gathering and insights.
  • Terminal notifications - Receives notifications in your chosen terminal when builds are successful... or are not.
  • Git hooks - Manage Git hooks to enforce workflows and requirements for contributors.


~199K SLoC