Problem - Possibly Cygwin

[Mitch Rosefelt <pixeldroid at gmail dot com>]

Hi All:
I've run into a problem in which cygwin is part of the error message.
I don't know that cygwin is part of the problem, but I'm having great difficulty figuring this out, so I'm posting it here with the hope that someone will know the fix.
Thanks much.
=============================

After installing react-devtools <https://github.com/facebook/react-devtools/tree/master/packages/react-devtools> into my Node JS environment, I am no longer able to run expo-cli.
Everything was working fine until I did that. I’m now getting the error below.
In addition to not being able to run expo, my Powershell permissions were also changed to "restricted" (fixed). I even restored my registry to the previous day in an effort to fix this.
I have uninstalled/reinstalled node and yarn.

The error indicates Cygwin, which I don't have installed on my computer (does not show up in a registry search), however, searching my computer, I see that Cygwin was installed with Git:C:\Program Files\Git\usr\share\cygwin
C:\Program Files\Git\usr\bin\cygwin-console-helper.exe
C:\Program Files\Android\Android Studio\bin\lldb\lib\distutils\cygwinccompiler.py
C:\Program Files\Git\usr\lib\perlS\core_per|\File\Spec\cygwin.pm
C:\Program Files\Git\usr\share\cygwin\cygwin.ldif
C:\Program Files\Git\usr\share\tern1info\63\cygwin
C:\Program Files\Git\usr\lib\terminf0\63\cygwin


Any help will be GREATLY appreciated.
Windows 10
npm: 6.6.0
node: v10.15.0
yarn: v1.13.0

=======================================================
ERROR
expo start --android
At C:\Users\name\AppData\Local\Yarn\bin\expo.ps1:5 char:13
+     *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
+             ~
Unexpected token ')' in expression or statement.
At C:\Users\name\AppData\Local\Yarn\bin\expo.ps1:8 char:3
+ if [ -x "$basedir/pwsh" ]; then
+   ~
Missing '(' after 'if' in if statement.
At C:\Users\name\AppData\Local\Yarn\bin\expo.ps1:8 char:5
+ if [ -x "$basedir/pwsh" ]; then
+     ~
Missing type name after '['.
At C:\Users\name\AppData\Local\Yarn\bin\expo.ps1:9 char:20
+ ... edir/pwsh" "$basedir/../Data/global/node_modules/.bin/expo.ps1" "$@" ...
+
Unexpected token '"$basedir/../Data/global/node_modules/.bin/expo.ps1"' in expression or statement.
At C:\Users\name\AppData\Local\Yarn\bin\expo.ps1:9 char:73
+ ... edir/pwsh" "$basedir/../Data/global/node_modules/.bin/expo.ps1" "$@"
+
Unexpected token '"$@"' in expression or statement.
    + CategoryInfo          : ParserError: (:) [], ParseException
    + FullyQualifiedErrorId : UnexpectedToken




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