Use cross-env to make yarn start work for Windows

[JohnHKoh]

The {KEY}={VALUE} syntax used to set environment variables does not work for Windows. Instead, the set keyword must be used as such: set PORT=3020. Instead of having 2 start scripts (like yarn start and yarn start-windows) to account for this difference, we can use cross-env to have a single start command without worrying about the operating system.

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[stevenhao]

sounds good! i noticed cross-env is in maintenance mode, but i suppose that's not a problem for us since we're only using it in a very basic way

[JohnHKoh]

sounds good! i noticed cross-env is in maintenance mode, but i suppose that's not a problem for us since we're only using it in a very basic way

Yes, as per their note here the package still should be updated with necessary bug fixes or critical security updates, so hopefully it shouldn't be an issue.