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271 packages found
A package for judging a string is null or empty or undefined
Check if `this` is truthy.
Disallow undefined property access in JavaScript
Boilerplate-free Enzyme testing
Simple utility function for checking isDefined for complex objects with long property paths
'cljs-merge' recursively merges two jsons into a unified one.
- json
- merge
- clojurescript
- clojure
- deep-merge
- deep
- replace
- compare
- null
- undefined
- combine
- object
- two objects
- javascript
Monadic library to help with Typescripts --strictNullChecks
Small library to dynamically create and evaluate expression with multiple parameters (even undefined)
A stateless implementation of the maybe monad
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
- array
- assert
- assertion
- async
- async function
- async-function
- asyncFunction
- bool
- boolean
- browser
- check
- check-type
- checking
- class
- View more
Check for a valid Number value.
A webpack loader which disallows importing nonexistent members from a module
JSON stringify/parser managing 'undefined, Date and Buffer.
- json
- serialize
- serializer
- deserialize
- deserializer
- reviver
- replacer
- parse
- parser
- node
- stringify
- Buffer
- Date
- undefined
Transform an Object that was transformed to return only the original properties recursively picked if they are not undefined.
Clean objects recursively, deleting undefined & null or falsy properties
Simple set of functions to check variables. Includes check of undefined / defined / defined and not null / defined and not empty / is number / is function is object
- check
- tool
- undefined
- is defined
- isnotnull
- is not null
- is not empty
- is object
- is function
- is number
- check number
- check object
A safe way to access values in deeply nested objects.
Validate the type of object's properties.
A utility to determine if a value is undefined
exists and allExist functions. plain and simple