@ssxv/node-printer

Cross-platform Node.js native printing bindings (Windows & POSIX/CUPS)

@ssxv/node-printer is an N-API native addon exposing a small set of printing APIs to Node.js. The project started as a Windows (Winspool) proof-of-concept and has been extended to include POSIX (CUPS) support so the addon can be built and used on both Windows and Linux systems.

Key features

- Exports:
- getPrinters
- getPrinter
- getJob
- getPrinterDriverOptions
- printFile
- printDirect
- setJob
- getDefaultPrinterName
- getSupportedPrintFormats
- getSupportedJobCommands.
- Dual platform support: Win32 (Winspool) and POSIX (libcups).
- Promise and callback-friendly JavaScript wrapper (printer.js).

Documentation is under the docs/ folder. Start at docs/index.md for an overview and links; the architecture overview is in docs/ARCHITECTURE.md.

Supported Node.js versions

- Node.js 18.x, 20.x, 22.x, 24.x

Quick start — Development (Windows)

``powershell


Install dev dependencies

npm ci

Build native addon (requires Visual Studio Build Tools + Python)

npm run build

Run unit tests (mock-driven)

npm test
`

Quick start — Development (Linux / WSL)

`bash


Install system build deps (Ubuntu/Debian)

sudo apt-get update; sudo apt-get install -y libcups2-dev build-essential python3

Install node deps and build

npm ci
npm run build

Run unit tests (mock-driven)

npm test
`

Usage example

`javascript
const printer = require('./printer');

async function list() {
const printers = await printer.getPrinters();
console.log(printers);
}

list();
`

Prebuilt binaries & publishing


- The repository includes a workflow .github/workflows/prebuild-and-publish.yml which builds prebuilt binaries on Windows and Linux runners for supported Node.js versions and uploads them as release artifacts. The install flow prefers prebuilt binaries and falls back to source builds using the install script in package.json (prebuild-install || node-gyp rebuild).
- If you maintain a package registry release, ensure CI publishes prebuilt artifacts for all target Node.js versions and architectures you intend to support.

Build notes & troubleshooting

- Windows: Visual Studio Build Tools (MSVC) + Python are required to compile the native addon. Follow the Node.js native build tooling docs for setting up node-gyp on Windows.
- Linux: libcups2-dev (or the distribution equivalent) is required to build the POSIX/CUPS native sources. On Debian/Ubuntu: sudo apt-get install libcups2-dev build-essential python3.
- If prebuild-install cannot find a compatible prebuilt binary during npm install, the package will fall back to a source build and you will need the platform build toolchain installed.

Notes on CUPS API requirement and driver option parsing

- Minimum libcups requirement: This project requires the destination-based CUPS APIs introduced in CUPS 1.6. Practically, that means the build environment must provide the modern destination APIs (for example, cupsCopyDestInfo) via the development headers (libcups2-dev or equivalent). In short: libcups >= 1.6 is required.

- Rationale: The PPD helper family (e.g., cupsGetPPD, ppdOpenFile, ppdMarkDefaults, cupsMarkOptions, ppdClose) were deprecated in CUPS 1.6 in favor of destination-based APIs. Requiring the modern APIs avoids deprecated behavior, gives richer and more consistent printer metadata, and simplifies the native implementation.

- Verification commands (run on Linux/WSL to confirm headers and version):

`bash


Check libcups pkg-config version (if available)

pkg-config --modversion libcups || pkg-config --modversion cups

Search for destination API symbol in headers

grep -nR "cupsCopyDestInfo" /usr/include 2>/dev/null || echo 'cupsCopyDestInfo not found in /usr/include'

Search for deprecated PPD helper symbols (optional)

grep -nR "cupsGetPPD\|ppdOpenFile\|ppdMarkDefaults\|cupsMarkOptions\|ppdClose" /usr/include 2>/dev/null || echo 'ppd helper symbols not found in /usr/include'
`

- CI note: Update your CI runners to install the CUPS development package (for example libcups2-dev` on Debian/Ubuntu) before building and running integration tests. The repository's integration tests that exercise POSIX bindings require those headers/libraries.

- Compatibility guidance: By design, this repository requires destination-based CUPS APIs (libcups >= 1.6). If you need to support very old systems that lack these APIs, consider one of the following:
- Provide a compatibility branch or patch that implements a fallback using older PPD helpers (note: those APIs are deprecated and brittle).
- Ship prebuilt binaries for the older target environments you need to support.
- Encourage users on older systems to upgrade libcups or use a newer distribution image.

Contact

- Issues & PRs: https://github.com/ssxv/node-printer