Function flattenArray

docs/app/js/sanddance-app.js:86312–86320

(array, filter, result)

    return flattenArray(array, filter, []);
}
function flattenArray(array, filter, result) {
    var index = -1;
    while(++index < array.length){
        var value = array[index];
        if (Array.isArray(value)) flattenArray(value, filter, result);
        else if (filter(value)) result.push(value);
    }
    return result;
}
function fillArray(_ref) {
    var target = _ref.target, source = _ref.source, _ref$start = _ref.start, start = _ref$start === void 0 ? 0 : _ref$start, _ref$count = _ref.count, count = _ref$count === void 0 ? 1 : _ref$count;
    var length = source.length;