React-Native/Expo/Cygwin “Unexpected Token” Problem

Question

安装react devtools后，我将无法再运行expo-cli。在我这么做之前，一切都很顺利。我现在得到下面的错误。我的Powershell权限也被更改为"受限"。我已经将我的注册表恢复到前一天，并卸载/重新安装了node和yarn以修复此问题。

错误列表中列出了Cygwin，我的计算机上没有安装它(没有显示在注册表搜索中)，然而，在搜索我的计算机时，我发现Cygwin安装了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\ldif \cygwin
C:\ProgramFiles\Git\usr\lib\termif0\63\cygwin

如有任何帮助，我们将不胜感激
Windows 10
npm:6.6.0
节点：v10.15.0
纱线：v1.13.0

expo start --android
At C:UsersnameAppDataLocalYarnbinexpo.ps1:5 char:13
+     *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
+             ~
Unexpected token ')' in expression or statement.
At C:UsersnameAppDataLocalYarnbinexpo.ps1:8 char:3
+ if [ -x "$basedir/pwsh" ]; then
+   ~
Missing '(' after 'if' in if statement.
At C:UsersnameAppDataLocalYarnbinexpo.ps1:8 char:5
+ if [ -x "$basedir/pwsh" ]; then
+     ~
Missing type name after '['.
At C:UsersnameAppDataLocalYarnbinexpo.ps1:9 char:20
+ ... edir/pwsh"  "$basedir/../Data/global/node_modules/.bin/expo.ps1" "$@" ...
+   
Unexpected token '"$basedir/../Data/global/node_modules/.bin/expo.ps1"' in expression or statement.
At C:UsersnameAppDataLocalYarnbinexpo.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

@supermerio

C:\Users\name\AppData\Local\Yarn\bin\expo.ps1

#!/bin/sh
basedir=$(dirname "$(echo "$0" | sed -e 's,\,/,g')")
case `uname` in
*CYGWIN*) basedir=`cygpath -w "$basedir"`;;
esac
if [ -x "$basedir/pwsh" ]; then
"$basedir/pwsh"  "$basedir/../Data/global/node_modules/.bin/expo.ps1" "$@"
ret=$?
else 
pwsh  "$basedir/../Data/global/node_modules/.bin/expo.ps1" "$@"
ret=$?
fi
exit $ret

此外，我还可以通过将expo安装到我的回购中并从那里调用它来使其正常工作。我注意到本地脚本与全局安装中的脚本存在差异。本地脚本调用"node"，而全局脚本(上面)调用"pwsh"。

\LactFacts\lactfact_190118\node_modules.bin\expo:

#!/bin/sh
basedir=$(dirname "$(echo "$0" | sed -e 's,\,/,g')")
case `uname` in
*CYGWIN*) basedir=`cygpath -w "$basedir"`;;
esac
if [ -x "$basedir/node" ]; then
"$basedir/node"  "$basedir/../expo-cli/bin/expo.js" "$@"
ret=$?
else 
node  "$basedir/../expo-cli/bin/expo.js" "$@"
ret=$?
fi
exit $ret

Answer 1

这是一个已知的Yarn1.13.0问题：https://github.com/yarnpkg/yarn/issues/6902#issuecomment-453534280

Answer 2

看起来"C:\Users\name\AppData\Local\Yarn\bin\expo.ps1"中的if语句格式不正确。

你能查看该文件进行确认吗？如果可能，请在此处张贴。