diff --git a/.github/scripts/install-electron.sh b/.github/scripts/install-electron.sh
new file mode 100755
index 0000000..438f911
--- /dev/null
+++ b/.github/scripts/install-electron.sh
@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+#
+# Workaround: electron@42 ships without a postinstall script and lazily
+# downloads its binary on the first require('electron'). Its install.js
+# uses @electron/get (ESM, loaded via require(esm)) and extract-zip. On
+# recent Node (observed on Node 26) the extract-zip stage silently exits
+# 0 without writing node_modules/electron/path.txt, so subsequent
+# require('electron') calls fail with ENOENT.
+#
+# This script downloads the binary with @electron/get (which works on its
+# own) and extracts it with the system `unzip`, then writes path.txt the
+# way install.js would have.
+#
+# TODO: try removing this script and the workflow call to it when
+# upgrading to electron 43 or newer -- upstream may have fixed the
+# install.js bug by then.
+
+set -euo pipefail
+
+ELECTRON_DIR="node_modules/electron"
+
+# electron <42 has a working postinstall that writes path.txt itself, so
+# we only run when path.txt is missing.
+if [ -f "$ELECTRON_DIR/path.txt" ]; then
+  exit 0
+fi
+
+RED='\033[1;31m'
+NC='\033[0m'
+ELECTRON_VERSION=$(node -p "require('./$ELECTRON_DIR/package.json').version")
+printf "${RED}=====================================================================${NC}\n"
+printf "${RED}WARNING: applying broken-electron-installer workaround for electron@${ELECTRON_VERSION}.${NC}\n"
+printf "${RED}Try removing .github/scripts/install-electron.sh and its workflow call${NC}\n"
+printf "${RED}when upgrading to electron 43 or newer.${NC}\n"
+printf "${RED}=====================================================================${NC}\n"
+
+ZIPPATH=$(cd "$ELECTRON_DIR" && node -e "(async () => {
+  const { downloadArtifact } = await import('@electron/get');
+  const { version } = require('./package.json');
+  const zipPath = await downloadArtifact({ version, artifactName: 'electron', platform: process.platform, arch: process.arch });
+  process.stdout.write(zipPath);
+})().catch(e => { console.error(e); process.exit(1); });")
+
+echo "Downloaded $ZIPPATH, extracting via system unzip..."
+mkdir -p "$ELECTRON_DIR/dist"
+unzip -q -o "$ZIPPATH" -d "$ELECTRON_DIR/dist"
+
+case "${RUNNER_OS:-$(uname -s)}" in
+  Linux|Linux*)              printf electron                                > "$ELECTRON_DIR/path.txt" ;;
+  macOS|Darwin*)             printf "Electron.app/Contents/MacOS/Electron"  > "$ELECTRON_DIR/path.txt" ;;
+  Windows|MINGW*|MSYS*|CYG*) printf electron.exe                            > "$ELECTRON_DIR/path.txt" ;;
+  *) echo "ERROR: unknown OS '${RUNNER_OS:-$(uname -s)}'"; exit 1 ;;
+esac
+
+test -f "$ELECTRON_DIR/path.txt" || { echo "ERROR: path.txt missing after workaround"; ls -la "$ELECTRON_DIR/"; exit 1; }
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 894864d..2086dee 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,18 +1,16 @@
 name: Tests
 
-on:
-  - pull_request
-  - push
+on: push
 
 env:
   CI: 1
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   main:
-    defaults:
-      run:
-        shell: bash
-
     strategy:
       matrix:
         include:
@@ -21,20 +19,13 @@ jobs:
             node_version: latest
             electron_version: latest
             experimental: false
-          - os: ubuntu-latest
-            node_version: 16
-            electron_version: latest
-            experimental: false
           - os: ubuntu-latest
             node_version: 14
-            electron_version: latest
+            electron_version: 41
+            nw_version: 0.81.0
             experimental: true
 
           # Different electron version
-          - os: ubuntu-latest
-            node_version: latest
-            electron_version: 16
-            experimental: true
           - os: ubuntu-latest
             node_version: latest
             electron_version: 13
@@ -46,7 +37,7 @@ jobs:
             electron_version: latest
             experimental: true
           - os: windows-latest
-            node_version: builtin # For an unknown reason, setup-node freezes
+            node_version: latest
             electron_version: latest
             experimental: true
 
@@ -55,19 +46,23 @@ jobs:
     continue-on-error: ${{ matrix.experimental }}
 
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node_version }}
-        if: matrix.node_version != 'builtin'
-
-      - run: npm config set script-shell 'bash'
-        if: runner.os == 'Windows'
-
-      - run: npm install
 
-      - run: npm install -D electron@${{ matrix.electron_version }}
-        if: matrix.electron_version != 'latest'
+      - run: |
+          if [ "${{ matrix.electron_version }}" != 'latest' ]; then
+            npm install -D electron@${{ matrix.electron_version }}
+          fi
+          if [ -n "${{ matrix.nw_version }}" ]; then
+            npm install -D nw@${{ matrix.nw_version }}
+          fi
+          npm install
+          # Workaround for broken electron@42 installer on modern Node.
+          # Remove this call when upgrading to electron 43+ and the
+          # upstream installer works again.
+          .github/scripts/install-electron.sh
 
       - run: |
           if [ "${RUNNER_OS}" = 'Linux' ]; then
diff --git a/e2e/vite-isolation-context-sandbox/vite.config.ts b/e2e/vite-isolation-context-sandbox/vite.config.ts
index 90eaf1a..e0037d4 100644
--- a/e2e/vite-isolation-context-sandbox/vite.config.ts
+++ b/e2e/vite-isolation-context-sandbox/vite.config.ts
@@ -31,6 +31,7 @@ export default defineConfig({
         vite: mergeConfig(commonConfig, {
           resolve: {
             browserField: false,
+            conditions: ['node', 'module', 'import', 'require', 'default'],
           }
         }),
       },