Allow function in watchOptions.ignored

[markjm]

The globs are turned into regex's anyway, so seems like a pretty simple change. Have a webpack discussion thread on the topic as well where I suggest aligning watchOptions.ignored and WatchIgnorePlugin

[markjm]

Related to discussion post here webpack/webpack#13566

[codecov]

Codecov Report

Merging #197 (b308647) into main (c651129) will decrease coverage by 0.87%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #197      +/-   ##
==========================================
- Coverage   92.67%   91.80%   -0.88%     
==========================================
  Files           6        6              
  Lines        1038     1037       -1     
  Branches      245      245              
==========================================
- Hits          962      952      -10     
- Misses         76       85       +9     

Flag	Coverage Δ
integration	91.80% <100.00%> (-0.88%)	⬇️

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Impacted Files	Coverage Δ
lib/DirectoryWatcher.js	91.45% <100.00%> (-1.55%)	⬇️
lib/watchpack.js	93.85% <100.00%> (-0.84%)	⬇️

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[alexander-akait]

Can you add test case?

[markjm]

@alexander-akait done - thanks for the suggestion, because I found an issue with the test I wrote. Tests +1 / Hubris +0

[markjm]

@alexander-akait ive patched this into our project and have been using it. Also had an unexpected performance improvement because I was able to tailor the regexs we use to be more performant than the globtoregex regexs :)

[markjm]

@sokra / @alexander-akait - I have reworked these changes to simply allow a custom test function instead of trying to mess with provided regex's and flags. Now you can simply provide a function to ignore, which I can document on webpack side as well.

[alexander-akait]

CI is broken

[markjm]

@alexander-akait i think the test may be flaky because (1) the test is working in various polling/non-polling matrix entries, (2) #203 (just some other arbitrary PR) sees the same test failing in random stages as well, and (3) the failure does not repro for me locally.

Please let me know if I am doing something wrong here