user defined object equality for a set in harmony (es6)

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Is there a means to define equality for my objects to solve my problem?

No not really. There has been some discussion about this on the mailing list. The result is:

  • Build your own Set/Map abstraction on top of Set/Map, which would convert the objects to a primitive value according to your hashing function.
  • Wait for value objects coming in ES7.

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