coverage.raw.json?

[ljharb]

istanbul produces a coverage.raw.json file, which is useful for regenerating different reports after the fact, or merging coverage reports from multiple runs (say, the same tests but on multiple node versions, where different feature checking branches apply). I use https://www.npmjs.com/package/istanbul-merge to merge those raw coverage files into a single report.

Can jest produce coverage.raw.json just like istanbul?

[cpojer]

I don't know. Do you want to find out and send a PR if it doesn't?

[ljharb]

Can you point to how jest uses istanbul? I'll compare the configuration settings I normally use to what jest does.

[cpojer]

cc @DmitriiAbramov wrote all of the coverage support, he may be able to help you out.

[aaronabramov]

hey @ljharb!
i actually think it's possible to do it with the regular .json report that istanbul produces in Jest, we merge some of our coverage in Jest already. I'm not sure what .raw.json is, but here's how we report our coverage https://github.com/facebook/jest/blob/master/packages/jest-cli/src/reporters/CoverageReporter.js#L72-L73

[rickhanlonii]

Pretty outdated so closing (also phrased as a question opposed to a feature request). @ljharb please open a new feature request if this is still something we dont have that you want us to add!

[ljharb]

It’s definitely something i still want; i can open a new issue if necessary or can retitle instead.

[SimenB]

Yeah, if you wouldn't mind filling out the issue template, that'd be awesome.