[I] [JS] Regression in roundtripping JS Date objects from apache-arrow@15 to apache-arrow@16 [arrow-js]

[via GitHub]

marvold-mw opened a new issue, #53:
URL: https://github.com/apache/arrow-js/issues/53

   ### Describe the bug, including details regarding any error messages, 
version, and platform.
   
   The [Create a Table from JavaScript 
arrays](https://arrow.apache.org/docs/js/#md:create-a-table-from-javascript-arrays)
 example from the documentation is sufficient:
   
   ```js
   import { tableFromArrays } from 'apache-arrow';
   
   const LENGTH = 2000;
   
   const rainAmounts = Float32Array.from(
       { length: LENGTH },
       () => Number((Math.random() * 20).toFixed(1)));
   
   const rainDates = Array.from(
       { length: LENGTH },
       (_, i) => new Date(Date.now() - 1000 * 60 * 60 * 24 * i));
   
   const rainfall = tableFromArrays({
       precipitation: rainAmounts,
       date: rainDates
   });
   
   console.table([...rainfall]);
   ```
   
   When running this code with `apache-arrow@15.0.2` installed, the date column 
in the resulting table is a column of JavaScript Date objects.  With 
`apache-arrow@16.0.0` installed, it is a column of JavaScript numbers 
representing epoch timestamps.  This is a *surprising* result, I think; while 
there's no reason why Arrow would be required to map Date objects to something 
which maps back to Date objects, it is an unusual choice which is not 
documented and which has clearly been changed recently. 
   
   Tested under Node 20.15.0 on Apple Silicon, but I have no reason to believe 
this is platform-specific.
   
   PR apache/arrow#40892 appears to have gone through some iteration after I 
tested it in <https://github.com/duckdb/duckdb-wasm/issues/1231>, and these 
follow-up changes caused this regression.  Perhaps it's desirable—but I'm not 
quite convinced this was the correct outcome?  Feel free to close as by design 
(but I think it would be worth documenting all of the. type mappings going from 
JS to Arrow and back, at the very least).
   
   ### Component(s)
   
   JavaScript


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