Extension causes high cpu load

[jeansjave]

• Issue Type: Performance
• Extension Name: vscode-format
• Extension Version: 0.0.6
• OS Version: Darwin x64 18.7.0
• VSCode version: 1.42.1

⚠️ Make sure to attach this file from your home-directory:
⚠️/Users/jeansjave/ryannaddy.vscode-format-unresponsive.cpuprofile.txt

Find more details here: https://github.com/microsoft/vscode/wiki/Explain-extension-causes-high-cpu-load