array destructuring with rest element not implemented

Expected:

$ echo 'var [a, ...b] = [1, 2, 3, 4]; console.log(a, b);' | node
1 [ 2, 3, 4 ]

Bublé 0.14.2 transpile:

$ echo 'var [a, ...b] = [1, 2, 3, 4]; console.log(a, b);' | buble
Error: Unexpected node type in destructuring (RestElement)