Remove dependency on deprecated core-js (via babel-runtime)

[redstone99]

Pdfkit depends on core-js, which is no longer maintained and has a number of issues.
The chain is pdfkit -> fontkit -> babel-runtime -> core-js
It looks like babel-runtime also hasn't been updated in 2 years which is why I'm posting the feature request in pdfkit.
Maybe fontkit can be changed to not use babel-runtime? I'm not sure what the best fix is.
The concern with depending on un-maintained packages is some future security issue.

[redtogin]

I just came here to see if there is something about the core-js v2 dependency, as I get this warning from npm:

├─┬ careibu-pdf@1.0.0 -> ./shared/pdf
│ └─┬ pdfkit@0.13.0
│   └─┬ fontkit@1.8.1
│     └─┬ babel-runtime@6.26.0
│       └── core-js@2.6.12

npm WARN deprecated core-js@2.6.12:
core-js@<3.4 is no longer maintained and not recommended for usage due to the number of issues. 
Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. 
Please, upgrade your dependencies to the actual version of core-js.

[blikblum]

There's nothing we can do in pdfkit. Its an issue with fontkit. There's already a PR in fontkit foliojs/fontkit#196

[ghane]

The PR has been accepted. Could we use the new release of fontkit in a new release of pdfkit, please?

[jacksonrayhamilton]

Yeah I’m seeing the deprecation notice as well. Looks like it has been a while and the fontkit update still hasn't made it to pdfkit.

Any blockers on that where you need help?