Node 9.9.0 breaks test suite of Jest

[SimenB]

• Version: v9.9.0
• Platform: Darwin Simens-MBP 17.4.0 Darwin Kernel Version 17.4.0: Sun Dec 17 09:19:54 PST 2017; root:xnu-4570.41.2~1/RELEASE_X86_64 x86_64
• Subsystem: Unsure

The Jest test suite contains a test which passes on node 6, node 8 and node 9.8.0, but fails on node 9.9.0. I opened up an issue in the jest repo with more details: jestjs/jest#5871.

I'll see if I can find the time to rebase node to narrow down the commit, but with Easter coming up I'm not sure.

My shot in the dark is that the regex here is treated differently in node 9.9.0: https://github.com/facebook/jest/blob/2bd5dfddfef425348760807d12348829a9a82d30/packages/jest-config/src/utils.js#L51-L53

Copy pasted for easier viewing:

 export const escapeGlobCharacters = (path: Path): Glob => { 
   return path.replace(/([()*{}\[\]!?\\])/g, '\\$1'); 
 }; 

[bnoordhuis]

I can look into it but I'd appreciate a standalone test case.

[SimenB]

It's completely empty at the office, so I spent some time bisecting, and this commit is the one that introduced the failure: a9bd8bf.

I'll see if I can find the time to reduce the test case, no promises though

[SimenB]

Seems like a revert fix is incoming: #19237

[simonkberg]

Fix landed in #19520

[SimenB]

I can apply that commit and see if it passes

[SimenB]

Yup, v9.9.0 with a0adf56 applied passes