Support jest@test version

[screendriver]

• Issue

It would be cool if you upgrade your Jest peerDependency to the latest test version of Jest. At the moment I'm getting "ts-jest#jest@^20.0.0" doesn't satisfy found match of "jest@20.1.0-delta.4"

The reason for trying out the latest delta version is this issue jestjs/jest#4088 that I am encountering all the time.

Thanks ☺️

[kulshekhar]

@screendriver wouldn't ^20.0.0 use the latest version in the 20.x.x range?

[screendriver]

Should be, yes. But yarn check complains about it.

[foo-shell:~/development/project]$ yarn check
yarn check v0.27.5
warning package.json: No license field
warning project@0.0.1: No license field
error "ts-jest#jest@^20.0.0" doesn't satisfy found match of "jest@20.1.0-delta.4"

[kulshekhar]

I need some help here. If the peer dependency requirement needs to change, can you tell me what it should be such that it allows all jest versions in a specified 'major' range?

[screendriver]

Good question. To be honest I don't know. I thought the same like you.

[pelotom]

From here,

If a version has a prerelease tag (for example, 1.2.3-alpha.3) then it will only be allowed to satisfy comparator sets if at least one comparator with the same [major, minor, patch] tuple also has a prerelease tag.

The current jest@test is up to v21.0.0-beta.1, so I think we need to use a version range of

"jest": "^20.0.0 >=21.0.0-beta.1"

[gdborton]

@kulshekhar You can test the semver values here - https://semver.npmjs.com/

"^20.0.0 || > 21.0.0-alpha || > 20.1.0-alpha" matches everything in 20.x, 20.1 prereleases, and current 21.0 prereleases.

Sadly npm doesn't seem to have a simple way of saying match > 20.x.x-alpha.