how create flutter macos app code example

Example 1: flutter setup macos

if your terminal doesn't see "flutter" you have to use  
Open terminal and paste 

export PATH="$PATH:`pwd`/flutter/bin"
and then try "flutter" && "flutter doctor"

Example 2: build flutter for macos apps

$ flutter config --enable-windows-desktop
$ flutter config --enable-macos-desktop
$ flutter config --enable-linux-desktop