immutable.js get keys from map/hash

Although this question got answered a while ago, here is a little update:

ES6 Solution:

const [ ...keys ] = map.keys();

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Pre ES6 Solution:

var keys = map.keySeq().toArray();

This is how ImmutableJS object looks like.

If you want to get:

["firstKey", "secondKey"]

You need to do:

console.log(map.keySeq().toArray())