converted arrays to objects

[darrachequesne]

See #2199

[rauchg]

Wouldn't it be better to use a Map here?

[nkzawa]

Object would be better for now, since there is no Map on Node.js 0.10.

[darrachequesne]

@nkzawa yes, that's my opinion too 👍

If we'd want to use ̀Map` (and more generally the ES2015 features) and still keep support of node < 0.12, I think a migration to Babel (or other) would be necessary (but that's out of the scope here)

[rauchg]

In the meantime we can merge this.
Moving forward, I think we should be using Babel and babel-runtime + runtime transformer to provide Map.

[rauchg]

Please rebase. Current status:

[darrachequesne]

Done! 👼

[rauchg]

You're not checking for hasOwnProperty here. Extensions fo the natives will make socket.io break here. Test needed for that scenario as well.

[darrachequesne]

Hi! I opened a new PR to clean this ugly one: #2322