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2021 packages found
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
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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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Validation utilities
Test if a value is a function.
Test if a value is a plain object.
Determine the name of a value's constructor.
Determine a value's type.
Test if a value is a string.
Test if a value is a boolean.
Test if a value is a number.
Convert a double-precision floating-point number to the nearest single-precision floating-point number.
Test if a value is an array.
Copy or deep clone a value to an arbitrary depth.
Test if a value is an object.
Test if a value is a Buffer 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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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 positive integer value.
Test if a value is a Uint8Array.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- uint8array
- uint8
- unsigned
- integer
- int
- uint
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Return a normal number `y` and exponent `exp` satisfying `x = y * 2^exp`.