Extension builds on Linux

[artemnovichkov]

I've updated zem to 0.4.4 in my extension, but my CI was failed with an error:

Publishing extension failed:
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

See full log here. As I understood, it's a one of zem's hidden dependency. Is it possible to fix it somehow?