1.4 KiB
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.