You do not need to be a customer of Vercel to use this tool as it is free and open source.
This is ideal for building and distributing CLI tools without requiring the end user to have NodeJS and your project dependencies installed.
You might also use it to deploy your application as a single binary onto your server which reduces your deployment steps.
PKG supports macOS, Windows (x64, arm64, armv6, armv7), and several flavors of Linux (alpine, Linux, Linuxstatic).
👉 Installing PKG
PKG is an NPM package. You can install this globally and use it directly from the command line.
👉 Compiling for different operating systems
As mentioned earlier PKG supports multiple platforms. You can generate binaries for all supported operating systems using whichever operating system you are currently running.
It also supports compilation using different NodeJS versions with Node 8 being the least supported version. Again you don't need to have the Node version used in compilation installed locally.
To compile your project, CD into the project directory and run the following command:
This will generate the requested binaries within that directory.
👉 Running the executable
Once compiled you can run your program like you would any executable. The generated binaries can be found in the directory where the compilation was performed.
👉 How does it work?
During compilation, PKG fetches the requested or latest pre-compiled version of NodeJS for the respective platform. This is known as the "base binary".It contains everything needed to run your NodeJS application in isolation.
Your project files are then bundled together with the pre-compiled base binary to form the resulting executable.
If you happen to have assets/project files, not within the project directory, PKG will fetch and remap the path using a virtual directory structure. This ensures that your binary can be shipped without having issues with assets pulled in using absolute paths.
You can read more on all the available options PKG provides from its Project README page on GitHub
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