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var Q = require('q');
var _ = require('lodash');
// Reduce an array to a promise
function reduce(arr, iter, base) {
return _.reduce(arr, function(prev, elem, i) {
return prev.then(function(val) {
return iter(val, elem, i);
});
}, Q(base));
}
// Transform an array
function serie(arr, iter, base) {
return reduce(arr, function(before, item, i) {
return Q(iter(item, i))
.then(function(r) {
before.push(r);
return before;
});
}, []);
}
module.exports = Q;
module.exports.reduce = reduce;
module.exports.serie = serie;
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