Usage of `md4` hash type fails in environments using node 17+

[filecage]

Problem Description

As of Node 17, the bundled OpenSSL version has been updated to 3.0. That removes support for a few long discouraged hash alrogithms like md4 (see https://wiki.openssl.org/index.php/OpenSSL_3.0#Providers).

However, md4 is your default hash type when generating class name hashes:
https://github.com/micantoine/svelte-preprocess-cssmodules/blob/master/src/lib/getHashDijest.ts#L61

This leads to the build failing with the following error message when using node versions newer than 17:

error:0308010C:digital envelope routines::unsupported

Proposed Solution

I assume that changing the default to md5 should not cause any trouble.

[micantoine]

Thank you for the suggestion. md5 is set as the default hash method from v2.2.2 of the preprocessor

[filecage]

Thank you very much!

[micantoine]

Also, it is possible to replace the default hash type via the localIdentName option using the following pattern [<hashType>:hash:<digestType>:<length>]. Not setting the <hashType> will fallback to md5.

// Preprocess config
...
preprocess: [
  cssModules({
    localIdentName: "[local]-[sha256:hash:base64:6]"
  }),
],
...