ARROW-951: [JS] Upgrade to typedoc 0.20.19

[TheNeuralBit]

Also ran npm audit fix

This PR upgrades us beyond typedoc 0.20 which made significant improvements to how re-exported objects are handled. I've uploaded a preview of the generated docs at https://theneuralbit.github.io/arrow-typedoc-0.20/. Compare this to the existing API docs at http://arrow.apache.org/docs/js/index.html.

It properly reflects our two top-level modules, Arrow.dom and Arrow.node, and shows the objects exported within them. The existing docs give the impression of a bag of objects without any structure.

There's still a lot of work to do to make these API docs useful, but I think this is a big step in the right direction (many thanks to @Gerrit0 for all the typedoc improvements that made this possible) . Some remaining issues that we could file follow-up jiras for:

• Some objects are missing (e.g. Vector sub-classes like DateVector, FloatVector, ..). These also seem to be missing from the existing docs. It's possible this is a bug in typedoc? Will need further investigation.
• Many classes and methods are still completely undocumented, so API docs tell users little aside from the structure of the code.

[github-actions]

Thanks for opening a pull request!

Could you open an issue for this pull request on JIRA?
https://issues.apache.org/jira/browse/ARROW

Then could you also rename pull request title in the following format?

ARROW-${JIRA_ID}: [${COMPONENT}] ${SUMMARY}

See also:

• Other pull requests
• Contribution Guidelines - How to contribute patches

[github-actions]

https://issues.apache.org/jira/browse/ARROW-951

[TheNeuralBit]

One issue with this change - it will break existing links. For example the docs for Table moved from classes/table.html to classes/arrow_dom.table.html.

We could fix this by only generating using one entryPoint - either Arrow.dom.ts or Arrow.node.ts (or Arrow.ts), not both.

[trxcllnt]

@TheNeuralBit I think we have /** @ignore */ on the vector subclasses, so they're excluded from the list of documented types.

[domoritz]

The new docs look great. The initial organization is a bit odd, though. There is a Module in the menu on the side with the two actual modules that are already listed below.

[nealrichardson]

Merging; please feel free to make followup JIRAs. Plenty of time to polish the docs before the next release.