I was about to start working on this feature but I noticed that the issue comes from the default `remove` regex:

[khaledtahadev]

I was about to start working on this feature but I noticed that the issue comes from the default remove regex:

/[^\w\s$*_+~.()'"!\-:@]+/g

This regex removes anything that's not in that list, meaning it preserves only the listed characters. The \w flag stands for the a-zA-Z range, meaning anything except those characters will be removed.

So instead we can update the remove regex to remove only the listed characters:

slugify('السلام عليكم ورحمة الله وبركاته', {
  remove: /[$*_+~.()'"!\-:@]+/g
})

And this yields the expected result:

السلام-عليكم-ورحمة-الله-وبركاته

But it didn't work

it return result like this alslam-alykm-wrhmh-allh-wbrkath

I tried to manipulate with the source code and when I remove then Arabic letters from the list charMap it's Works well as expected

Originally posted by @simov in #100 (comment)

[simov]

In that case you need to also use the extend method:

slugify.extend({
  'ل': 'ل',
  ...
})

You have to map every Arabic character to the same character. That means that you are overriding the default behavior which is to transliterate all characters to Latin script.