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build: add PNG-enabled prebuilds.
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‎.github/workflows/prebuilds.yml‎

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name: Prebuilds
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on:
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push:
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tags:
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- "v*"
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workflow_dispatch:
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env:
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FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
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LIBPNG_VERSION: "1.6.58"
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LIBPNG_URL: https://downloads.sourceforge.net/project/libpng/libpng16/1.6.58/libpng-1.6.58.tar.xz
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LIBPNG_SHA256: 28eb403f51f0f7405249132cecfe82ea5c0ef97f1b32c5a65828814ae0d34775
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permissions:
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contents: read
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jobs:
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build-linux:
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name: ${{ matrix.name }}
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runs-on: ${{ matrix.os }}
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container: node:24-bullseye
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timeout-minutes: 30
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env:
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ROBOTJS_ENABLE_PNG: "1"
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strategy:
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fail-fast: false
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matrix:
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include:
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- name: Linux x64
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artifact: linux-x64
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os: ubuntu-24.04
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architecture: x64
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- name: Linux arm64
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artifact: linux-arm64
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os: ubuntu-24.04-arm
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architecture: arm64
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steps:
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- name: Check out repository
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uses: actions/checkout@v6
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- name: Install build dependencies
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run: |
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apt-get update
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apt-get install -y curl xz-utils pkg-config python3 make g++ zlib1g-dev libx11-dev libxtst-dev
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- name: Build static libpng
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shell: bash
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run: |
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archive="$RUNNER_TEMP/libpng-$LIBPNG_VERSION.tar.xz"
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prefix="$RUNNER_TEMP/libpng"
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curl --fail --location --retry 3 "$LIBPNG_URL" --output "$archive"
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echo "$LIBPNG_SHA256 $archive" | sha256sum --check -
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tar -xf "$archive" -C "$RUNNER_TEMP"
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cd "$RUNNER_TEMP/libpng-$LIBPNG_VERSION"
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CFLAGS="-O2 -fPIC" ./configure --prefix="$prefix" --disable-shared --enable-static
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make -j"$(nproc)"
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make install
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echo "PKG_CONFIG_PATH=$prefix/lib/pkgconfig" >> "$GITHUB_ENV"
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echo "ROBOTJS_PNG_STATIC=1" >> "$GITHUB_ENV"
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- name: Install package dependencies
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run: npm ci --ignore-scripts
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- name: Build glibc N-API prebuild
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run: npm run build:prebuild -- --tag-libc
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- name: Test prebuild on Node.js 24
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env:
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PREBUILDS_ONLY: "1"
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run: npx jasmine test/image.js
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- name: Set up Node.js 25
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uses: actions/setup-node@v6
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with:
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node-version: "25"
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architecture: ${{ matrix.architecture }}
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- name: Load prebuild on Node.js 25
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env:
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PREBUILDS_ONLY: "1"
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run: node -e "const robot = require('.'); if (!robot.image.supportsPNG) throw new Error('PNG support is disabled')"
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- name: Upload prebuild
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uses: actions/upload-artifact@v6
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with:
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name: ${{ matrix.artifact }}
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path: prebuilds/${{ matrix.artifact }}/
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if-no-files-found: error
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retention-days: 1
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build-native:
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name: ${{ matrix.name }}
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runs-on: ${{ matrix.os }}
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timeout-minutes: 30
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env:
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ROBOTJS_ENABLE_PNG: "1"
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strategy:
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fail-fast: false
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matrix:
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include:
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- name: macOS x64
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artifact: darwin-x64
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os: macos-15-intel
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architecture: x64
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deployment-target: "10.15"
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- name: macOS arm64
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artifact: darwin-arm64
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os: macos-15
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architecture: arm64
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deployment-target: "11.0"
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- name: Windows x64
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artifact: win32-x64
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os: windows-2022
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architecture: x64
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- name: Windows arm64
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artifact: win32-arm64
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os: windows-11-arm
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architecture: arm64
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steps:
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- name: Check out repository
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uses: actions/checkout@v6
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- name: Set up Node.js
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uses: actions/setup-node@v6
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with:
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node-version: "24"
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architecture: ${{ matrix.architecture }}
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cache: npm
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- name: Set up Python
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uses: actions/setup-python@v6
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with:
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python-version: "3.x"
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- name: Install macOS build dependencies
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if: runner.os == 'macOS'
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run: brew install pkg-config
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- name: Build static libpng on macOS
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if: runner.os == 'macOS'
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shell: bash
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run: |
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archive="$RUNNER_TEMP/libpng-$LIBPNG_VERSION.tar.xz"
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prefix="$RUNNER_TEMP/libpng"
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curl --fail --location --retry 3 "$LIBPNG_URL" --output "$archive"
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echo "$LIBPNG_SHA256 $archive" | shasum -a 256 --check -
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tar -xf "$archive" -C "$RUNNER_TEMP"
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cd "$RUNNER_TEMP/libpng-$LIBPNG_VERSION"
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export MACOSX_DEPLOYMENT_TARGET="${{ matrix.deployment-target }}"
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./configure --prefix="$prefix" --disable-shared --enable-static
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make -j"$(sysctl -n hw.ncpu)"
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make install
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echo "PKG_CONFIG_PATH=$prefix/lib/pkgconfig" >> "$GITHUB_ENV"
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echo "ROBOTJS_PNG_STATIC=1" >> "$GITHUB_ENV"
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- name: Install package dependencies
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run: npm ci --ignore-scripts
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- name: Build N-API prebuild
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run: npm run build:prebuild
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- name: Test prebuild on Node.js 24
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env:
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PREBUILDS_ONLY: "1"
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run: npx jasmine test/image.js
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- name: Set up Node.js 25
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uses: actions/setup-node@v6
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with:
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node-version: "25"
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architecture: ${{ matrix.architecture }}
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- name: Load prebuild on Node.js 25
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env:
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PREBUILDS_ONLY: "1"
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run: node -e "const robot = require('.'); if (!robot.image.supportsPNG) throw new Error('PNG support is disabled')"
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- name: Upload prebuild
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uses: actions/upload-artifact@v6
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with:
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name: ${{ matrix.artifact }}
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path: prebuilds/${{ matrix.artifact }}/
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if-no-files-found: error
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retention-days: 1
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package:
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name: Package
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needs: [build-linux, build-native]
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runs-on: ubuntu-24.04
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timeout-minutes: 15
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steps:
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- name: Check out repository
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uses: actions/checkout@v6
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- name: Set up Node.js
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uses: actions/setup-node@v6
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with:
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node-version: "24"
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cache: npm
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- name: Install package dependencies
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run: npm ci --ignore-scripts
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- name: Download prebuilds
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uses: actions/download-artifact@v7
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with:
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path: prebuilds
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- name: Verify release tag
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if: startsWith(github.ref, 'refs/tags/v')
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run: node -e "const pkg = require('./package.json'); if ('v' + pkg.version !== process.env.GITHUB_REF_NAME) throw new Error('Tag does not match package version')"
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- name: Pack npm artifact
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run: npm pack
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- name: Verify install without lifecycle scripts
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shell: bash
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run: |
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mkdir package-smoke
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cd package-smoke
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npm init --yes
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npm install --ignore-scripts ../robotjs-*.tgz
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PREBUILDS_ONLY=1 node -e "const robot = require('robotjs'); if (!robot.image.supportsPNG) throw new Error('PNG support is disabled')"
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- name: Upload npm artifact
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uses: actions/upload-artifact@v6
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with:
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name: npm-package
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path: robotjs-*.tgz
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if-no-files-found: error

‎CHANGELOG.md‎

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## 0.9.1 (2026-08-01)
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* feat: Enable PNG image I/O on Windows.
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* build: Package PNG-enabled Node-API prebuilds with GitHub Actions.
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## 0.9.0 (2026-08-01)
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* feat: Add macOS Accessibility and Screen Recording permission APIs.

‎LICENSES/libpng.txt‎

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COPYRIGHT NOTICE, DISCLAIMER, and LICENSE
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=========================================
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PNG Reference Library License version 2
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---------------------------------------
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* Copyright (c) 1995-2026 The PNG Reference Library Authors.
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* Copyright (c) 2018-2026 Cosmin Truta.
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* Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
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* Copyright (c) 1996-1997 Andreas Dilger.
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* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
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The software is supplied "as is", without warranty of any kind,
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express or implied, including, without limitation, the warranties
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of merchantability, fitness for a particular purpose, title, and
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non-infringement. In no event shall the Copyright owners, or
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anyone distributing the software, be liable for any damages or
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other liability, whether in contract, tort or otherwise, arising
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from, out of, or in connection with the software, or the use or
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other dealings in the software, even if advised of the possibility
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of such damage.
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Permission is hereby granted to use, copy, modify, and distribute
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this software, or portions hereof, for any purpose, without fee,
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subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you
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must not claim that you wrote the original software. If you
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use this software in a product, an acknowledgment in the product
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documentation would be appreciated, but is not required.
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2. Altered source versions must be plainly marked as such, and must
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not be misrepresented as being the original software.
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3. This Copyright notice may not be removed or altered from any
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source or altered source distribution.
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PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35)
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-----------------------------------------------------------------------
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libpng versions 1.0.7, July 1, 2000, through 1.6.35, July 15, 2018 are
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Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, are
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derived from libpng-1.0.6, and are distributed according to the same
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disclaimer and license as libpng-1.0.6 with the following individuals
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added to the list of Contributing Authors:
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Simon-Pierre Cadieux
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Eric S. Raymond
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Mans Rullgard
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Cosmin Truta
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Gilles Vollant
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James Yu
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Mandar Sahastrabuddhe
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Google Inc.
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Vadim Barkov
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and with the following additions to the disclaimer:
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There is no warranty against interference with your enjoyment of
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the library or against infringement. There is no warranty that our
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efforts or the library will fulfill any of your particular purposes
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or needs. This library is provided with all faults, and the entire
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risk of satisfactory quality, performance, accuracy, and effort is
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with the user.
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Some files in the "contrib" directory and some configure-generated
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files that are distributed with libpng have other copyright owners, and
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are released under other open source licenses.
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libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
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Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
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libpng-0.96, and are distributed according to the same disclaimer and
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license as libpng-0.96, with the following individuals added to the
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list of Contributing Authors:
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Tom Lane
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Glenn Randers-Pehrson
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Willem van Schaik
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libpng versions 0.89, June 1996, through 0.96, May 1997, are
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Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
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and are distributed according to the same disclaimer and license as
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libpng-0.88, with the following individuals added to the list of
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Contributing Authors:
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John Bowler
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Kevin Bracey
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Sam Bushell
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Magnus Holmgren
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Greg Roelofs
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Tom Tanner
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Some files in the "scripts" directory have other copyright owners,
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but are released under this license.
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libpng versions 0.5, May 1995, through 0.88, January 1996, are
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Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
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For the purposes of this copyright and license, "Contributing Authors"
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is defined as the following set of individuals:
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Andreas Dilger
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Dave Martindale
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Guy Eric Schalnat
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Paul Schmidt
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Tim Wegner
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The PNG Reference Library is supplied "AS IS". The Contributing
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Authors and Group 42, Inc. disclaim all warranties, expressed or
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implied, including, without limitation, the warranties of
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merchantability and of fitness for any purpose. The Contributing
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Authors and Group 42, Inc. assume no liability for direct, indirect,
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incidental, special, exemplary, or consequential damages, which may
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result from the use of the PNG Reference Library, even if advised of
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the possibility of such damage.
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Permission is hereby granted to use, copy, modify, and distribute this
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source code, or portions hereof, for any purpose, without fee, subject
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to the following restrictions:
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1. The origin of this source code must not be misrepresented.
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2. Altered versions must be plainly marked as such and must not
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be misrepresented as being the original source.
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3. This Copyright notice may not be removed or altered from any
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source or altered source distribution.
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The Contributing Authors and Group 42, Inc. specifically permit,
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without fee, and encourage the use of this source code as a component
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to supporting the PNG file format in commercial products. If you use
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this source code in a product, acknowledgment is not required but would
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be appreciated.

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