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76 packages found
3x as fast as `is-whitespace` and `whitespace-regex` thanks to `is-string-blank`. This package is a simple function that accepts an argument and returns `true` if it is a string AND it is not blank. Supports Node and Browser environments.
Validates if a value is null.
Check if the required properties are set, the easy way!
Perform easy type-checks with a simple type assertion.
- perform
- easy
- type-checks
- simple
- type
- assertion
- constructors
- expected
- type's
- accepted
- constructor
- null
- evaluate
- asserttype
Utilities and types to help with simple Boolean checks
Validation utilities.
- validate.io
- validator
- validation
- validate
- valid
- is
- isvalid
- check
- typed
- assert
- expect
- api
- string
- primitive
- View more
checks if foo is not defined, i.e. undefined, null, an empty string, array, object or NaN
Common types, type guards and type checkers.
Checks whether a given string is null or empty in Javascript (node).
2 functions that check if argument is undefined or null
JavaScript Package for checking is variable empty,undefined or null
This library is to check for null and undefined values in JSON objects
- object
- nullcheck
- null
- deep
- deep-check
- null-check
- boolean
- empty
- nested
- is-null
- undefined
- is-undefined
- isNull
- isUndefined
A collection of utilities dealing with object
- check
- is
- is-object
- isobject
- to-object
- toobject
- javascript
- kind
- kind-of
- object
- type
- typeof
- instanceof
- value
- View more
Check does the given Javascript Object is a null.
To check the data is empty or not. And also check the type of object wheater Array, Object, Function, Number, String or Boolean
- javascript
- node.js
- react.js
- angular.js
- vue.js
- array
- boolean
- check
- deep
- empty
- function
- has
- hasOwn
- is-empty
- View more
Guard against null and undefined values
Checkout whether a given string is null or empty
Check does the given Javascript Object is a null.
Undefined or Null Checker.
Cleaner for JavaScript objects - removes objects that have any of the following value : [], null, undefined,''. Checks objects recursively.