Brian Hulette created ARROW-2159:

             Summary: [JS] Support custom predicates
                 Key: ARROW-2159
             Project: Apache Arrow
          Issue Type: New Feature
          Components: JavaScript
            Reporter: Brian Hulette
            Assignee: Brian Hulette

Right now the `DataFrame` interface only supports a pretty basic set of 
operations, which could be limiting to users. We should add the ability for the 
user to define their own predicates using callback functions.

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