Most of these are small utilities (e.g. node-mkdirp), but a few are really significant contributions to the Node community. node-bigint, for instance, is a very

Most of these are small utilities (e.g. node-mkdirp), but a few are really significant contributions to the Node community. node-bigint, for instance, is a very robust, efficient library for doing infinite-precision arithmetic (a fairly common necessity, since every number in JavaScript is a 64-bit float and there's no way of knowing when you lose precision).