Pan

Son of the Hermes

Yet another JavaScript runtime powered by Hermes. Pan is built to support positron

Motivation

Just for Fun! ...but, I was inspired by the following reasons:

electron is a great framework, but app's backend code is written in JS so you can check it easily. tauri is also a great framework, but it was a pity that app's backend couldn't be written in JS.

I was drawn to the hermes engine's features to compile JS to bytecode and run it independently. Pan aims to support an electron-like framework using this to make the backend code more difficult to understand.

Status

• Extremely unstable
• Support execute js/hbc files
• Support the require function

Goals

• Compatibility with Node.js
• Support .hbc files import and export
• Support Node.js core modules
• Support Node API (N-API)
• Support CommonJS with Node Module Resolution

Non-Goals

• Node addons without using Node API (N-API)
• Better module system (or better module resolution)
• ESM modules (for now)
• Cross platform (for now)
• Libuv

Note

• This is a POC framework.
• It only works on macOS.

Development

Pre-requirements

• Rust
• Dependencies for Hermes engine build

macOS

Install rust.

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Install dependencies for Hermes engine build.

brew install cmake git ninja

Clone project and submodules

git clone https://github.com/hahnlee/pan.git
cd pan
git submodule update --init --recursive

Build and run

cd crates/cli
cargo run -v

LICENSE

• MIT (code)
• CC BY-SA 4.0 (logo image)
  • Original Image