feat: support Jest 25

[sodatea]

Jest has released version 25 under the next dist-tag:

• https://www.npmjs.com/package/jest/v/25.0.0
• Jest 25 jestjs/jest#8862

The maintainer promised no more user facing breaking changes planned
jestjs/jest#8956 (comment)

I've tested the new version in my local branch and figured out only these files need to be updated to support Jest 25 (Not sure if the updated tests should be included in this PR):

• Update peerDependencies version range to include v25
• Update ExpectedVersions to allow new versions
• Remove async describe blocks in the tests to eliminate warnings from Warn if describe returns a value jestjs/jest#7852

[coveralls]

Pull Request Test Coverage Report for Build 3572

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 90.049%

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Totals
Change from base Build 3571:	0.0%
Covered Lines:	1071
Relevant Lines:	1131

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💛 - Coveralls

[kulshekhar]

@sodatea thank you for the PR. Some points that came to mind while reviewing:

• we typically only support the Jest version in the same major range. For example, ts-jest v24.x.x will only support jest v24.

• the PR doesn't have the updated package-lock.json file

• the package.json (and lock file) for some tests will also need to be updated with this jest version

I'll be happy to review this again if/once the PR is updated to address these points!

[armano2]

@kulshekhar do you know when new version will be released?

[kulshekhar]

@armano2 isn't the latest stable jest version still 24.9.0?

[armano2]

@kulshekhar yes jest v24.9.0 is latest stable version, v25 is marked as next

[kulshekhar]

@armano2 we (all collaborators here) typically only add support for stable releases. It'll be hard to track & address issues in next given the limited amount of time we can collectively spend

[armano2]

don't worry, i'm just asking, we are not in a rush 👍

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different tooling packages have different policies when/if they add support for never version, now i know that we should wait for stable release :)

[dmarcautan]

Hi, 25.1.0 is stable release now. Could you please prioritize releasing ts-jest with the support of it?

[kulshekhar]

@dmarcautan I'm going to be unable to resolve the conflicts (or send a new PR with the update) for the next few days at least. If someone else does it by then, I'll review and merge it in and publish the new version. If not, I'll try to do it over the coming weekend

[kibertoad]

@kulshekhar Resolved conflicts in #1355