[jira] [Created] (ARROW-11706) [JS] Better BigInt compatibility check

["Diana Clarke (Jira)" <ji...@apache.org>]

Diana Clarke created ARROW-11706:
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             Summary: [JS] Better BigInt compatibility check
                 Key: ARROW-11706
                 URL: https://issues.apache.org/jira/browse/ARROW-11706
             Project: Apache Arrow
          Issue Type: Improvement
            Reporter: Diana Clarke


See: https://github.com/apache/arrow/pull/9110

Check for whether BigInt64ArrayAvailable and BigUint64ArrayAvailable are available, rather than just BigIntAvailable. Recent versions of JavaScriptCore/WebKit in Safari support BigInt but do not support BigInt64Array, and so anything that relies on BigInt64Array will fail despite BigIntAvailable being true.

The manifestation of this issue can be seen when trying to run the following within Safari on a table that contains bigints:
{code:java}
RecordBatchJSONWriter.writeAll(table).toString(true)

message: "BigUint64Array is not available in this environment"
  BigUint64ArrayUnavailableError
  BigUint64ArrayUnavailable
  bignumToString
  bigNumsToStrings
  generatorResume@[native code]
  performIteration@[native code]
  visitInt
  visit
  map@[native code]
  recordBatchToJSON
  close
  finish
  global code
{code}



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