feature: allow custom comparator for parallelRuns

[erezrokah]

Please provide details about:

• What you're trying to do

  Follow up to RFC: Parallelizing across machines in CI #1811. Better load balance test files across multiple CI machines

• Why you can't use AVA for this

  Ava sorts files by file name, which is not the best load balancing strategy, especially when some tests are slower than others.

• And maybe how you think AVA could handle this

  Allow setting a custom comparator to be used here:
  

  ava/lib/api.js

  Line 180 in 3131ccd

  selectedFiles = selectedFiles.sort((a, b) => a.localeCompare(b, [], {numeric: true}));

Alternatives:
Ensure number of tests per file is low enough via a lint rule.

More context:
netlify/cli#4178

[novemberborn]

What would you think about being able to configure the comparator function in an ava.config.js file?

[erezrokah]

What would you think about being able to configure the comparator function in an ava.config.js file?

That would be great and will solve our use case 💯

Are you open for me to contribute this change or prefer someone else to do it?

[novemberborn]

All yours @erezrokah! Let me know if you have questions.