Prettier glob matching multiple file types

Question

I have added a prettier script in my package.json so I can run it as part of my tests:

"prettier": "prettier --list-different \"**/*.{ts, js, css, scss, md}\""

I want all files from the above types to be checked by Prettier.
* --list-difference just prints out the files that are not prettified and returns an error code so it's convenient to run in CI.

When I run

$ npm run prettier

Prettier returns 0 results even though I know there are files that are not prettified.

I am not sure what's going on, can someone please help me understand what's wrong with my glob matching ?

(Running in Ubuntu 18.04 with bash)

Answer 1

Found the issue.

In case anyone else is trying to match more than one file type, syntax is right but you cannot have spaces in the curly braces. So instead

"**/*.{js, ts, css, scss, md}"

It should be

"**/*.{js,ts,css,scss,md}"

This website helped me debug it easily: http://www.globtester.com/