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3906 packages found
Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.
Get the native type of a value.
Simply check if your array, object, nested stuff, string, number, etc are empty or not.
JavaScript library for efficient prime number detection and arithmetic, with customizable algorithms for large numbers.
Provides calculation functions related to complex numbers.
Test if a value is a number.
Returns `true` if the value is a primitive.
Returns true if a value exists, false if empty. Works with deeply nested values using object paths.
Checks if a number is prime or not
Test if a double-precision floating-point numeric value is NaN.
- stdlib
- stdmath
- assertion
- assert
- utilities
- utility
- utils
- util
- math
- mathematics
- ieee754
- floating-point
- float
- number
- View more
Test if a double-precision floating-point numeric value is infinite.
- stdlib
- stdmath
- assertion
- assert
- utilities
- utility
- utils
- util
- math
- mathematics
- ieee754
- floating-point
- float
- double
- 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
check-stats-modules(csm) is is a CLI application that obtains the specified npm module's stats. After specifying the module name and period, the number of downloads during that period is acquired and displayed on the terminal.
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
Get a default number when a number is a non-number, a NaN or out of range.
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
Isomorphic, functional type-checking for Javascript
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
- View more
check if a number is a positive integer
A function that deterministically checks if a number is prime.