使用electron-builder打包時下載electron失敗解決方案

electron-builder 在打包時會檢測cache中是否有electron 包，如果沒有的話會從github上拉去，在國內網絡環境中拉取的過程大概率會失敗，所以你可以自己去下載一個包放到cache目錄里

各個平台的目錄地址

Linux: $XDG_CACHE_HOME or ~/.cache/electron/
MacOS: ~/Library/Caches/electron/
Windows: %LOCALAPPDATA%/electron/Cache or ~/AppData/Local/electron/Cache/

參考：https://github.com/electron/get#how-it-works

例如在macos平台打包electron應用，執行 electron-builder --mac --x64

➜  clipboard git:(master) ✗ npm run dist

> clipboard@1.0.0 dist /Users/xx/workspace/electron/clipboard
> electron-builder --mac --x64

  • electron-builder  version=22.3.2 os=18.7.0
  • loaded configuration  file=package.json ("build" field)
  • writing effective config  file=dist/builder-effective-config.yaml
  • packaging       platform=darwin arch=x64 electron=8.0.0 appOutDir=dist/mac
  • downloading     url=https://github.com/electron/electron/releases/download/v8.0.0/electron-v8.0.0-darwin-x64.zip size=66 MB parts=8

可以單獨下載這個包 https://github.com/electron/electron/releases/download/v8.0.0/electron-v8.0.0-darwin-x64.zip， 放到~/Library/Caches/electron/ 目錄下

然后可以打包完成