Gist for generating a map from an array of arrays [['a': 'hello'], ['b': 'world']].

gistfile1.txt

function fromArrayMap (arrayMap, convertAllArrays) {
        convertAllArrays = convertAllArrays || true;
        var map = new Map(), value;
        arrayMap.forEach(function(x) {
            value = Array.isArray(x[1]) ? fromArrayMap(x[1]) : x[1];
            map.set(x[0], value);
        });
        return map;
    }
    
  Map.prototype.fromArrayMap = fromArrayMap;