Download Windows arm64 node lib in CI

.github/workflows/ci.yml

@@ -52,6 +52,10 @@ jobs:
             ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
             ${{ runner.os }}-yarn-
 
+      - name: Get NodeJS node-gyp lib for Windows arm64
+        if: ${{ matrix.os == 'windows-2019' && matrix.arch == 'arm64' }}
+        run: .\script\download-nodejs-win-arm64.ps1 ${{ matrix.node }}
+      
       - name: Install and build dependencies
         run: yarn
         env:

script/download-nodejs-win-arm64.ps1

@@ -0,0 +1,19 @@
+$nodeVersion = $args[0]
+
+If ($null -eq $nodeVersion) {
+  Write-Error "No NodeJS version given as argument to this file. Run it like download-nodejs-win-arm64.ps1 12.10.1"
+  exit 1
+}
+
+$url = "https://unofficial-builds.nodejs.org/download/release/v$nodeVersion/win-arm64/node.lib"
+$cacheFolder = "$env:LOCALAPPDATA\node-gyp\Cache\$nodeVersion\arm64"
+
+If (!(Test-Path $cacheFolder)) {
+  New-Item -ItemType Directory -Force -Path $cacheFolder
+}
+
+$output = "$cacheFolder\node.lib"
+$start_time = Get-Date
+
+Invoke-WebRequest -Uri $url -OutFile $output
+Write-Output "Downloaded arm64 NodeJS lib $nodeVersion in $((Get-Date).Subtract($start_time).Seconds) second(s)"