steps:
  - pwsh: mkdir .build -ea 0
    condition: and(succeeded(), contains(variables['Agent.OS'], 'windows'))
    displayName: Create .build folder

  - script: mkdir -p .build
    condition: and(succeeded(), not(contains(variables['Agent.OS'], 'windows')))
    displayName: Create .build folder

  - script: node build/azure-pipelines/common/computeBuiltInDepsCacheKey.js > .build/builtindepshash
    displayName: Prepare built-in extensions cache key

  - task: Cache@2
    inputs:
      key: '"builtin-extensions" | .build/builtindepshash'
      path: .build/builtInExtensions
      cacheHitVar: BUILTIN_EXTENSIONS_RESTORED
    displayName: Restore built-in extensions cache

  - script: node build/lib/builtInExtensions.js
    env:
      GITHUB_TOKEN: "$(github-distro-mixin-password)"
    condition: and(succeeded(), ne(variables.BUILTIN_EXTENSIONS_RESTORED, 'true'))
    displayName: Download built-in extensions