Using a destructuring assignment to iterate over an es6 map with nodejs 4.1.2

Question

I tried to iterate over an es6 map like described here:

for (var [key, value] of myMap.entries()) {
  console.log(key + " = " + value);
}

When running it with nodejs 4.1.2 and the --harmony flag I get

SyntaxError: Unexpected token [

I could write

for (var arr of myMap.entries()) {
  console.log(arr[0] + " = " + arr[1]);
}

but this is not nice because it is not expressive.

Is there a better way?

Answer 1

This answer is made in accordance with this meta post.

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As @Ben Fortune has commented:

Have you tried explicitly using the --harmony_destructuring flag?

Actual documentation on this flag is hard to find, but more information can be found in this GitHub issue about destructuring assignment in node 4.