Defined Packages

Isomorphic, functional type-checking for Javascript

Check if an identifier is defined

Elvis operator functionality for JavaScript.

ensures all required parameters are not null, or throws a useful error like 'phone is required'

Common types, type guards and type checkers.

util for validation that object has defined props

checks if foo is not defined, i.e. undefined, null, an empty string, array, object or NaN

Utilities for working with undefined properties

A simple module that works exactly as Object.assign, but skips assigning undefined values.

Functions to work with `undefined` and `null` values

Check if a variable in a nested object is defined and optionally also check its type. Useful for verifying API responses.

checks if foo is not defined, i.e. undefined, null, an empty string, array, object or NaN

A simple plugin to test the network speed between user device and a server sepcified by the user by downloading the file specified by the user

checks if your properties or values are defined

shortcut methods for util.isNullOrUndefined

Finds the absolute filepath to the original sourcecode of any defined value

An object that will throw an exception if a user tries to access an undefined property

Simple utility function for checking isDefined for complex objects with long property paths

Object.assign that skips any undefined properties from source objects

A few handy javascript utilities for testing variables