Was able to install it at least by setting up an .npmrc file:

//npm.pkg.github.com/:_authToken=<your personal access token>
@danielbayley:registry=https://npm.pkg.github.com

And then installing with:

npm install @danielbayley/jest-preset-coffeescript

But I am still unable to get it to work when I add the "jest" piece to the package.json

@jaredmoody @unscene Sorry, things have been a bit chaotic recently…

I wanted to release a quick update in response to #35. Initially it seemed like a simple version bump to Jest, but it turned out they altered an upstream config option which broke this package, and forced me to quickly rewrite how it works (See jestjs/jest#9495 (comment)).

Since the CI was passing, I pushed those changes, which was a mistake. Also, I didn't realise GitHub Packages were now immutable, as the last time I tested them was during the beta period, before this was the case.

Anyway, I'll fix this ASAP and post an update, including to npm… Although I want to migrate solely to GitHub Packages in future.

● Validation Error:

  Module /Users/Dan/Work/dev/npm/jest-preset-coffeescript in the setupFilesAfterEnv option was not found.
         <rootDir> is: /Users/roc58/myCode/pug-cli

  Configuration Documentation:
  https://jestjs.io/docs/configuration.html

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! pug-cli@1.0.0 test: `jest`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the pug-cli@1.0.0 test script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/roc58/.npm/_logs/2020-07-05T23_58_40_125Z-debug.log
The terminal process terminated with exit code: 1

I have this error when using the version in the github packages, but this error does not happen when installing directly from GitHub npm i https://github.com/danielbayley/jest-preset-coffeescript.

My CI also started failing and tracked it down to this. After many failed attempts to use the Github package (very hard to use with yarn, it seems), I tried yarn add https://github.com/danielbayley/jest-preset-coffeescript and then running jest. Unfortunately, this still causes the problem of clobbering package.json (#45). Is the fixed version not on Github? I don't see any commits that would fix it.

1. Please yank 1.3.0 since it overwrites package.json - my CI started failing because of this today

@jaredmoody @edemaine This has now been resolved in 07038d6.

The README now contains instructions that don't work.

@jaredmoody @weotch @unscene @jacekk @Nevon @fcostarodrigo They clearly assume you already have npm configured to work with GitHub Packages:

Assuming you already have npm configured to work with GitHub Packages:

apart from the steps specific to this package:

npm config set @danielbayley:registry https://npm.pkg.github.com

But I have clarified a few things in the README just now, along with a couple of other fixes… please see latest release. Sorry for the delay! Everything should be working now, but please test… thanks! 👍

It seems that the new version still isn't on NPM: https://www.npmjs.com/package/jest-preset-coffeescript doesn't list it (perhaps because of the deprecation notice?) and npm install jest-preset-coffeescript@2 doesn't work.

Also, version 1.3.0 has not been pulled from NPM; I just got my package.json clobbered when running npm install (depending on version ^1.1.1 which auto-upgraded).

I am using my own solution now. Just published in case it is useful for someone else as well.
https://www.npmjs.com/package/coffeescript-jest-preset

About the package not being on npm, the author is publishing the package on github, so you have to configure npm to get the package from github.