# node:util

> Node's utility module, with two legacy helpers unimplemented.

`node:util` and `node:util/types` match Node; `node:sys` returns the same object.

## Differences from Node

- `toUSVString()` and `log()` throw `ERR_METHOD_NOT_IMPLEMENTED`.
- `util.types` predicates are non-enumerable; list them with `Object.getOwnPropertyNames(util.types)`.