npmjs.org "isUndefined" keyword
View the packages on the npmjs.org package registry that are tagged with the "isUndefined" keyword.
Top 2.3% on npmjs.org
135 versions - Latest release: over 1 year ago - 50 dependent packages - 15,842 dependent repositories - 1.02 million downloads last month - 50 stars on GitHub - 1 maintainer
typechecker 9.3.0 💰
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)135 versions - Latest release: over 1 year ago - 50 dependent packages - 15,842 dependent repositories - 1.02 million downloads last month - 50 stars on GitHub - 1 maintainer
@phun-ky/typeof 2.0.1 💰
A set of JavaScript helper functions to check for types36 versions - Latest release: 2 days ago - 370 thousand downloads last month - 2 stars on GitHub - 1 maintainer
Top 3.8% on npmjs.org
14 versions - Latest release: about 5 years ago - 8 dependent packages - 32 dependent repositories - 24.4 thousand downloads last month - 27 stars on GitHub - 1 maintainer
ts-type-guards 0.7.0
Curried TypeScript type guards for primitive types and classes14 versions - Latest release: about 5 years ago - 8 dependent packages - 32 dependent repositories - 24.4 thousand downloads last month - 27 stars on GitHub - 1 maintainer
confirm-data 1.0.0
This package is for confirming data that will take arguments to verify its value and type.1 version - Latest release: about 5 years ago - 1 dependent package - 9 downloads last month - 0 stars on GitHub - 1 maintainer
wots 0.3.2
A very simple "typeof" detection9 versions - Latest release: over 4 years ago - 1 dependent repositories - 14 downloads last month - 0 stars on GitHub - 1 maintainer
is-check 1.0.2
Check if the given value is of a specific type.3 versions - Latest release: about 10 years ago - 2 dependent packages - 2 dependent repositories - 4 downloads last month - 0 stars on GitHub - 1 maintainer
@utilify/types 2.0.0 deprecated
A utility library for type checks and type manipulation in JavaScript and TypeScript, providing f...4 versions - Latest release: 3 months ago - 20 downloads last month - 1 stars on GitHub - 1 maintainer
@quackxl/utility 0.0.4
JS常用工具封装5 versions - Latest release: about 1 year ago - 24 downloads last month - 1 maintainer
@silen/is-undefined 1.0.3
Check if the parameter is undefined3 versions - Latest release: almost 5 years ago - 1 dependent package - 0 downloads last month - 1 maintainer
typesof 1.1.3
javascript类型判断5 versions - Latest release: about 5 years ago - 12 downloads last month - 1 maintainer
@multi-kit/inspect 0.0.23
This library provides core functionalities for determining the type of a given object, supporting...6 versions - Latest release: 5 months ago - 10 downloads last month - 1 maintainer
node-screwdriver 0.1.7
Node toolkit adding some helpful functions: files, array, string, color, math ...8 versions - Latest release: about 8 years ago - 3 dependent packages - 2 dependent repositories - 4.16 thousand downloads last month - 0 stars on GitHub - 1 maintainer
is-checker 1.0.12
Simple and light-weight JavaScript type checker that brings convenience!11 versions - Latest release: about 3 years ago - 1 dependent package - 13 downloads last month - 2 stars on GitHub - 1 maintainer
whats-the-type 2.4.0
Type detection beyond `typeof`16 versions - Latest release: over 3 years ago - 1 dependent package - 2 dependent repositories - 24 downloads last month - 0 stars on GitHub - 1 maintainer
@extremejs/utils 1.0.0-beta.22
ExtremeJS Utilities22 versions - Latest release: over 1 year ago - 1 dependent package - 373 downloads last month - 2 stars on GitHub - 1 maintainer
Top 3.5% on npmjs.org
59 versions - Latest release: over 2 years ago - 82 dependent packages - 605 dependent repositories - 882 thousand downloads last month - 12 stars on GitHub - 1 maintainer
@daybrush/utils 1.13.0 💰
utils for daybrush59 versions - Latest release: over 2 years ago - 82 dependent packages - 605 dependent repositories - 882 thousand downloads last month - 12 stars on GitHub - 1 maintainer
x-utils-es 2.4.0
helper tools for javascript validation92 versions - Latest release: almost 4 years ago - 9 dependent repositories - 64 downloads last month - 0 stars on GitHub - 1 maintainer
@silen/type 1.0.1
Type check in TypeScript2 versions - Latest release: almost 5 years ago - 1 dependent package - 9 downloads last month - 1 maintainer
locore 0.0.0
locore is a Standard library. the library with basic JavaScript methods to improve development ef...2 versions - Latest release: over 1 year ago - 18 downloads last month - 0 stars on GitHub - 1 maintainer
pp-is 1.2.7
Collection of methods for check19 versions - Latest release: 3 months ago - 7 dependent packages - 5 dependent repositories - 25 downloads last month - 0 stars on GitHub - 1 maintainer
deep-null-check 1.0.5
This library is to check for null and undefined values in JSON objects6 versions - Latest release: over 5 years ago - 1 dependent package - 13 downloads last month - 0 stars on GitHub - 1 maintainer
Top 5.5% on npmjs.org
54 versions - Latest release: 4 months ago - 23 dependent packages - 129 dependent repositories - 2.28 million downloads last month - 8 stars on GitHub - 2 maintainers
@nevware21/ts-utils 0.12.5 💰
Comprehensive TypeScript/JavaScript utility library with cross-environment support (Node.js, brow...54 versions - Latest release: 4 months ago - 23 dependent packages - 129 dependent repositories - 2.28 million downloads last month - 8 stars on GitHub - 2 maintainers
type-checker-helpers 1.0.1
JavaScript library to check data types2 versions - Latest release: about 6 years ago - 1 dependent package - 1 dependent repositories - 0 downloads last month - 0 stars on GitHub - 1 maintainer
robb 0.2.1
Simple type checker in JavaScript.3 versions - Latest release: over 13 years ago - 2 dependent packages - 6 dependent repositories - 23 downloads last month - 2 stars on GitHub - 1 maintainer
typeof-ext 0.0.2
A node.js module to get, compare and check types2 versions - Latest release: over 11 years ago - 1 dependent repositories - 9 downloads last month - 1 stars on GitHub - 1 maintainer
@ahmetilhn/handy-utils 3.2.3
Handy utils offers developers a powerful and easy-to-use toolset. With its clean, modular and sca...4 versions - Latest release: 5 months ago - 18 downloads last month - 2 stars on GitHub - 1 maintainer
@pnmasharov/type-check 1.0.1
A small set of functions to check value against a specific type2 versions - Latest release: over 2 years ago - 4 downloads last month - 1 stars on GitHub - 1 maintainer
Top 8.2% on npmjs.org
6 versions - Latest release: almost 4 years ago - 4 dependent packages - 7 dependent repositories - 1.65 thousand downloads last month - 3 stars on GitHub - 1 maintainer
@js-utilities/typecheck 0.1.6
Utility library for javascript type checking.6 versions - Latest release: almost 4 years ago - 4 dependent packages - 7 dependent repositories - 1.65 thousand downloads last month - 3 stars on GitHub - 1 maintainer
etvelit 1.2.0
Curried TypeScript type guards for primitive types and classes5 versions - Latest release: over 1 year ago - 5 downloads last month - 0 stars on GitHub - 1 maintainer
typeis.js 1.0.18
The fast and reliable JS type-checking toolbox!18 versions - Latest release: about 5 years ago - 1 dependent package - 20 downloads last month - 1 stars on GitHub - 1 maintainer
Top 5.4% on npmjs.org
22 versions - Latest release: over 1 year ago - 22 dependent packages - 14 dependent repositories - 17.7 thousand downloads last month - 9 stars on GitHub - 1 maintainer
ts-util-is 2.1.0 deprecated 💰
TypeScript typeof utility helper with no dependencies.22 versions - Latest release: over 1 year ago - 22 dependent packages - 14 dependent repositories - 17.7 thousand downloads last month - 9 stars on GitHub - 1 maintainer
javascript-types 1.0.7
A fixed version of the native javascript typeof function.10 versions - Latest release: almost 7 years ago - 1 dependent package - 1 dependent repositories - 32 downloads last month - 1 maintainer
paracetamol 0.7.2
declarative check type of function arguments and development profiler for your functions3 versions - Latest release: about 9 years ago - 1 dependent package - 1 dependent repositories - 16 downloads last month - 2 stars on GitHub - 1 maintainer
readablefn 0.0.9
Helpful and useful javascript functions9 versions - Latest release: about 1 month ago - 88 downloads last month - 0 stars on GitHub - 1 maintainer
@qdk/type 1.0.9 removed
数据类型分类两类，基本类型和引用类型。10 versions - Latest release: about 3 years ago - 4 dependent packages - 1 dependent repositories - 148 downloads last month - 1 stars on GitHub - 1 maintainer
what-is 0.1.2 deprecated
A very simple "typeof" detection5 versions - Latest release: about 8 years ago - 1 dependent repositories - 34 downloads last month - 0 stars on GitHub - 1 maintainer
amigo-js 3.1.1 deprecated
Amigo JS offers developers a powerful and easy-to-use toolset. With its clean, modular and scalab...24 versions - Latest release: 6 months ago - 264 downloads last month - 2 stars on GitHub - 1 maintainer
chober 2.0.1 deprecated
Chober.js - is a collection of methods that are used by programmers every day. We decided to put ...24 versions - Latest release: over 5 years ago - 1 dependent package - 6 dependent repositories - 391 downloads last month - 10 stars on GitHub - 1 maintainer
robb-clone 0.2.2 removed
Simple type checker in JavaScript.1 version - Latest release: over 9 years ago - 1 dependent repositories - 16 downloads last month - 0 stars on GitHub - 1 maintainer
oh-my-type 2.0.1 unpublished
Oh my type! Tiny and robust type checker.4 versions - Latest release: over 5 years ago
Related Keywords
isNumber
34
isString
34
isNull
32
isArray
32
isObject
30
isBoolean
30
isFunction
28
isDate
20
type
18
isSymbol
18
isRegExp
16
typescript
13
javascript
13
isMap
11
typeof
10
isWeakMap
10
isError
10
isSet
10
isNaN
9
utils
9
isDefined
9
isPromise
9
isWeakSet
9
types
8
check
7
isEmpty
7
isBigInt
6
utility
6
isFinite
6
isArguments
6
isArrayBuffer
5
util
5
getType
5
isNil
5
isPlainObject
5
object
5
is-undefined
5
isElement
5
type-checker
4
string
4
undefined
4
is-null
4
number
4
null
4
isPositive
4
is
4
kind
4
isAsyncFunction
4
isInfinity
4
boolean
4
array
4
isBlob
4
isInt
4
isBigint
3
is-array
3
tools
3
is-boolean
3
utilities
3
is-date
3
functions
3
library
3
is-error
3
is-function
3
is-map
3
sleep
3
is-number
3
is-object
3
js
3
is-string
3
node
3
isRegexp
3
isNegative
3
type checking
3
isFile
3
browser
3
checker
3
isEven
3
isEqual
3
isPrimitive
3
isInt16Array
3
function
3
lodash
3
validation
3
validate
3
isUrl
3
isEmail
3
debounce
2
isIterable
2
isCallable
2
is-symbol
2
is-set
2
guard
2
isTrue
2
is-promise
2
keys
2
typechecker
2
isNonPrimitive
2
isLike
2
isArrayOf
2
type checker
2