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2467 packages found
Test if a value is a number.
check if something is a POJO (plain old javascript object)
Test if a value is an object.
Test if a value is a number having a nonnegative integer value.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- number
- numeric
- integer
- int
- nonnegative
- is
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Determine the specification defined classification of an object.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- type
- typeof
- native
- class
- classification
- specification
- spec
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A robust micro library for type checking. Defers to constructs' internal `[[Class]]` property rather than duck typing for excellent type detection and to avoid triggering false positives.
Extended JavaScript Type Validator
Test if a value is a number having an integer value.
Test if a value is a number having a positive integer value.
Validate options object
Test if a value is object-like.
retrieve the type of your value by using constructors when possible
Takes any JavaScript data type or object as an input and returns a string describing the type of the input.
compare the type of your value with one or several types
- typeof
- types
- instanceof
- type-of
- test
- check
- typeof-in
- string
- constructor
- name
- number
- object
- array
- function
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Test if a value is a number having a nonnegative value.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- number
- numeric
- nonnegative
- is
- isnumber
- isnumeric
- View more
Javascript object utilities such as deep clone, merge and apply. Also includes 'is' a type checking method to type check Objects, Functions and Classes
Test if a value is a number having a positive value.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- number
- numeric
- positive
- is
- isnumber
- isnumeric
- View more
A simple type-checking data validator and extractor
- weakset
- is
- cors
- view
- rm -fr
- postcss-plugin
- patch
- ES2023
- lru
- performance
- collection.es6
- Float32Array
- eslintplugin
- generics
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Test if a value is an array-like object.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- array
- array-like
- is
- isarraylike
- object
- obj
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