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90 packages found
Returns true if an object was created by the `Object` constructor, or Object.create(null).
Returns true if the value is an object and not an array or null.
Test if a value is null.
A utility to determine if a value is null
Check whether a value is a `Generator` or `GeneratorFunction`. The `co` way, more strict checking. Always return boolean true or false, never null or undefined.
- check
- es2015
- es6
- es7
- function
- functions
- generator
- generatorfunction
- generators
- is
- is-function
- is-generator
- is-generator-function
- next
Checks if the given value is a window object.
Used to check if some of the arguments are null or undefined.
Check if a given object is null or empty
A one-liner to check if a property is set (not null, undefined or empty string).
Safe and simple PHP isset() for JavaScript
[](https://nodei.co/npm/@firanorg/nulla-cupiditate-ad/)
- performant
- watchFile
- css variable
- ES2015
- match
- vest
- flux
- exit-code
- option
- metadata
- ES2019
- String.prototype.matchAll
- rds
- route53
- View more
- colors
- chinese
- mobile
- channel
- column
- argument
- es-abstract
- syntaxerror
- ascii
- tc39
- value
- columns
- protocol-buffers
- streams
- View more
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- character
- defineProperty
- flatMap
- matchAll
- toArray
- concurrency
- eslintconfig
- which
- private data
- remove
- compare
- crypto
- rate
- sanitize
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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
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A utility to determine if a value is a non-null JavaScript object
When you need validate the variable data type
A utility to determine if a value is null or undefined
A utility to determine if a value is a Plain Old Java Object (a non-null serializable JSON object)