aaac7fed
 liuqimichale
add
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module.exports = function flatten(list, depth) {
depth = (typeof depth == 'number') ? depth : Infinity;
if (!depth) {
if (Array.isArray(list)) {
return list.map(function(i) { return i; });
}
return list;
}
return _flatten(list, 1);
function _flatten(list, d) {
return list.reduce(function (acc, item) {
if (Array.isArray(item) && d < depth) {
return acc.concat(_flatten(item, d + 1));
}
else {
return acc.concat(item);
}
}, []);
}
};
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