util.inspect()

util.inspect(object[, options])

Return a string representation of object, which is useful for debugging.

An optional options object may be passed that alters certain aspects of the formatted string:

• showHidden - if true then the object's non-enumerable and symbol properties will be shown too. Defaults to false.

• depth - tells inspect how many times to recurse while formatting the object. This is useful for inspecting large complicated objects. Defaults to 2. To make it recurse indefinitely pass null.

• colors - if true, then the output will be styled with ANSI color codes. Defaults to false. Colors are customizable, see Customizing util.inspect colors.

• customInspect - if false, then custom inspect(depth, opts) functions defined on the objects being inspected won't be called. Defaults to true.

Example of inspecting all properties of the util object:

const util = require('util');

console.log(util.inspect(util, { showHidden: true, depth: null }));

Values may supply their own custom inspect(depth, opts) functions, when called they receive the current depth in the recursive inspection, as well as the options object passed to util.inspect().