config#collectCoverageFrom

[aaronabramov]

No description provided.

[aaronabramov]

this also can specify excludes. so the default should be something like

collectCoverageFrom = [
  '**/*.js',
  '!*__mocks__*',
  '!*node_modules*',
];

[cpojer]

nice!

[cpojer]

This looks good!

If we are doing a major version bump for this, should we completely remove coverageIgnorePatterns and collectCoverageOnlyFrom? I don't think these are important enough that we have to do two majors for deprecation + removal, so I'm ok with being radical.

[aaronabramov]

@cpojer i would rather keep it secret and undocumented for a while. I want to see how easy it is to use it and how it performs. I'm not really a fan of having both regexes and globs together :)

[cpojer]

Ok.

[faisalil]

how is this going to work with scriptPreprocessors? I am using typescript and using a preprocessor for that.

[faisalil]

Also, when are you guys planning to document this?

[aaronabramov]

@faisalil it'll first run the files through your preprocessor and then through the coverage instrumenter.
The results can be a little off but mostly accurate (if your preprocessor doesn't retain lines, the line coverage will not be accurate at all)
We still have some work to do on getting globs into jest, and then we'll write docs for it

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