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Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.
The lodash method `_.isNumber` exported as a module.
Validates if a value is a number.
Test if a value is a number.
Test if a value is an array-like object of numbers.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- array
- array-like
- is
- number
- numeric
- isnumber
- View more
Validates if a value is a number primitive and an integer.
Validates if a value is a number primitive, excluding NaN.
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
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
Test if a value is an array-like object containing only nonnegative integers.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- typed
- array
- typed array
- is
- istypedarray
- istyped
- View more
Test if a value is an array-like object containing only integers.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- typed
- array
- typed array
- is
- istypedarray
- istyped
- View more
Validates if a value is a nonnegative number.
Validates if a value is a positive number primitive.
Test if a value is an array-like object containing only positive integers.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- typed
- array
- typed array
- is
- istypedarray
- istyped
- View more
This a package for playing with string very easily
- string
- string-player
- string-manipution
- string.js
- s
- strings
- ansi-styles
- chalk
- string_decoder
- isarray
- isnum
- json
- jsontool
- hasAll
- View more
A simple utility to Check the value is number or can convert to a number, for example string ' 123 ' can be converted to 123.
👺 weak but accurate type checking that returns a string representation of input's type
- type
- types
- coerce
- coercion
- checker
- check
- flow
- typing
- typeof
- typeov
- detection
- ispromise
- isnumber
- isinfinity
- View more
Test if a value is a number having a nonpositive value.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- number
- numeric
- nonpositive
- is
- isnumber
- isnumeric
- View more
Test if a value is a number having a negative value.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- number
- numeric
- negative
- is
- isnumber
- isnumeric
- View more
Test if a value is equal to negative zero.