Extensible destructuring proposal

[Samuel Hapák]

Hello there,

I have written proposal to allow extend standard behavior of object destructuring:
https://github.com/vacuumlabs/es-proposals/blob/master/extensible-destructuring.md

Main idea is, that currently object destructuring is useless for people who use Map or Immutable.Map (https://facebook.github.io/immutable-js/) as their main data structure.

This would allow authors of libraries to create map like structures that would support destructuring. It extends the language in a similar way iterator does.

The main idea is, that if object defines `Symbol.get` method, it gets used to access properties of object instead of `[]` when destructuring.

What do you think?

Cheers,

Samuel






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