## util These functions are in the module `'util'`. Use `require('util')` to access them. ### util.debug(string) A synchronous output function. Will block the process and output `string` immediately to `stderr`. require('util').debug('message on stderr'); ### util.log(string) Output with timestamp on `stdout`. require('util').log('Timestmaped message.'); ### util.inspect(object, showHidden=false, depth=2) Return a string representation of `object`, which is useful for debugging. If `showHidden` is `true`, then the object's non-enumerable properties will be shown too. If `depth` is provided, it tells `inspect` how many times to recurse while formatting the object. This is useful for inspecting large complicated objects. The default is to only recurse twice. To make it recurse indefinitely, pass in `null` for `depth`. Example of inspecting all properties of the `util` object: var util = require('util'); console.log(util.inspect(util, true, null)); ### util.pump(readableStream, writeableStream, [callback]) Experimental Read the data from `readableStream` and send it to the `writableStream`. When `writeableStream.write(data)` returns `false` `readableStream` will be paused until the `drain` event occurs on the `writableStream`. `callback` gets an error as its only argument and is called when `writableStream` is closed or when an error occurs.