[jira] [Created] (ARROW-4395) ts-node throws type error running `bin/arrow2csv.js`

["Paul Taylor (JIRA)" <ji...@apache.org>]

Paul Taylor created ARROW-4395:
----------------------------------

             Summary: ts-node throws type error running `bin/arrow2csv.js`
                 Key: ARROW-4395
                 URL: https://issues.apache.org/jira/browse/ARROW-4395
             Project: Apache Arrow
          Issue Type: Bug
          Components: JavaScript
    Affects Versions: 0.4.0
            Reporter: Paul Taylor
            Assignee: Paul Taylor
             Fix For: 0.4.0


ts-node is being too strict, throws this (inaccurate) error JIT'ing the TS source:

{code:none}
$ cat test/data/cpp/stream/simple.arrow | ./bin/arrow2csv.js 

/home/ptaylor/dev/arrow/js/node_modules/ts-node/src/index.ts:228
    return new TSError(diagnosticText, diagnosticCodes)
           ^
TSError: ⨯ Unable to compile TypeScript:
src/vector/map.ts(25,57): error TS2345: Argument of type 'Field<T[string | number | symbol]>[]' is not assignable to parameter of type 'Field<T[keyof T]>[]'.
  Type 'Field<T[string | number | symbol]>' is not assignable to type 'Field<T[keyof T]>'.
    Type 'T[string] | T[number] | T[symbol]' is not assignable to type 'T[keyof T]'.
      Type 'T[symbol]' is not assignable to type 'T[keyof T]'.
        Type 'DataType<Type, any>' is not assignable to type 'T[keyof T]'.
          Type 'symbol' is not assignable to type 'keyof T'.
            Type 'symbol' is not assignable to type 'string | number'.
{code}




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