[I] [JS] `vectorFromArray()` can't create Int64 from Number [arrow-js]

[via GitHub]

wjones127 opened a new issue, #66:
URL: https://github.com/apache/arrow-js/issues/66

   ### Describe the bug, including details regarding any error messages, 
version, and platform.
   
   
   ```js
   const { vectorFromArray, Int64 } = require('apache-arrow');
   vectorFromArray([1], new Int64())
   ```
   
   Fails with
   
   ```
   Uncaught TypeError: Cannot convert 1 to a BigInt
       at DataBufferBuilder.set 
(/Users/willjones/Downloads/repro2/node_modules/apache-arrow/builder/buffer.js:79:42)
       at Int64Builder.setValue 
(/Users/willjones/Downloads/repro2/node_modules/apache-arrow/builder/int.js:24:22)
       at Int64Builder.set 
(/Users/willjones/Downloads/repro2/node_modules/apache-arrow/builder.js:183:18)
       at Int64Builder.append 
(/Users/willjones/Downloads/repro2/node_modules/apache-arrow/builder.js:165:33)
       at 
/Users/willjones/Downloads/repro2/node_modules/apache-arrow/factories.js:183:25
       at Generator.next (<anonymous>)
       at vectorFromArray 
(/Users/willjones/Downloads/repro2/node_modules/apache-arrow/factories.js:52:55)
   ```
   
   If we wrap in `BigInt`, it works:
   
   ```
   > vectorFromArray([BigInt(1)], new Int64());
   Vector [IntVector<Int>] {
     isValid: [Function (anonymous)],
     get: [Function (anonymous)],
     ...
   ```
   
   This seems odd, as it seems like `1` is being converted internally to 
something that can't be converted into a BigInt. I would expect it to be 
preserved, unless I am misunderstanding how the conversion to BitInt is 
happening.
   
   
   
   ### Component(s)
   
   JavaScript


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