I got approximately the same problem and by now I’ve tried so many solutions from github/stackoverflow (while not really understanding them) that I have no idea what I’ve done anymore and definitely not what to do 
When I used npm/npx create-react-app jammming (because that’s the project I’m at now - it did work before when I did the Ravenous project), it only installed the node_modules folder, package.json and package-lock.json. I’m also getting this error:
Creating a new React app in /Users/myusername/Desktop/react-jammming/jammming.
Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts...
> [email protected] install /Users/myusername/Desktop/react-jammming/jammming/node_modules/chokidar/node_modules/fsevents
> node-gyp rebuild
No receipt for 'com.apple.pkg.CLTools_Executables' found at '/'.
No receipt for 'com.apple.pkg.DeveloperToolsCLILeo' found at '/'.
No receipt for 'com.apple.pkg.DeveloperToolsCLI' found at '/'.
gyp: No Xcode or CLT version detected!
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack at ChildProcess.onCpExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:351:16)
gyp ERR! stack at ChildProcess.emit (events.js:210:5)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)
gyp ERR! System Darwin 19.0.0
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /Users/myusername/Desktop/react-jammming/jammming/node_modules/chokidar/node_modules/fsevents
gyp ERR! node -v v12.14.0
gyp ERR! node-gyp -v v5.0.5
gyp ERR! not ok
> [email protected] install /Users/myusername/Desktop/react-jammming/jammming/node_modules/jest-haste-map/node_modules/fsevents
> node-gyp rebuild
No receipt for 'com.apple.pkg.CLTools_Executables' found at '/'.
No receipt for 'com.apple.pkg.DeveloperToolsCLILeo' found at '/'.
No receipt for 'com.apple.pkg.DeveloperToolsCLI' found at '/'.
gyp: No Xcode or CLT version detected!
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack at ChildProcess.onCpExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:351:16)
gyp ERR! stack at ChildProcess.emit (events.js:210:5)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)
gyp ERR! System Darwin 19.0.0
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /Users/myusername/Desktop/react-jammming/jammming/node_modules/jest-haste-map/node_modules/fsevents
gyp ERR! node -v v12.14.0
gyp ERR! node-gyp -v v5.0.5
gyp ERR! not ok
> [email protected] postinstall /Users/myusername/Desktop/react-jammming/jammming/node_modules/babel-runtime/node_modules/core-js
> node -e "try{require('./postinstall')}catch(e){}"
> [email protected] postinstall /Users/myusername/Desktop/react-jammming/jammming/node_modules/core-js
> node -e "try{require('./postinstall')}catch(e){}"
> [email protected] postinstall /Users/myusername/Desktop/react-jammming/jammming/node_modules/core-js-pure
> node -e "try{require('./postinstall')}catch(e){}"
+ [email protected]
+ [email protected]
+ [email protected]
added 1535 packages from 749 contributors and audited 906205 packages in 49.503s
32 packages are looking for funding
run `npm fund` for details
found 0 vulnerabilities
A template was not provided. This is likely because you're using an outdated version of create-react-app.
Please note that global installs of create-react-app are no longer supported.
I already tried reinstalling Node and redoing npm install -g create-react-app. I got a bunch of other errors then - could try reproducing those if it helps in advising me.
I also tried that sudo command TO mentioned, but it didn’t fix the problem for me either.
I’d love to be able to FINALLY work on the Jammming project
Could you please guide me step by step so I can install it properly and create a new React app? I’m completely lost at the moment.
