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3106 packages found
Test if a value is an email address.
Assertion utility tools.
- stdlib
- stdassert
- assertion
- assert
- expectation
- expect
- utilities
- utility
- utils
- util
- test
- check
- validate
- validation
- View more
Test if an object's own or inherited property is write-only.
Test if a value is an alphagram.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- string
- alphabetical
- order
- alphagram
- anagram
- sorted
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Test if a value is an anagram.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- is
- anagram
- string
- isstring
- isanagram
- type
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Test if a value is an array-like object containing only negative numbers.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- typed
- array
- typed array
- is
- istypedarray
- istyped
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Test if a value is a valid typed array length.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- typedarray
- typed-array
- typed
- array
- arr
- length
- View more
Test if a value is an ndarray-like object containing single-precision floating-point numbers.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- is
- isndarray
- ndarray
- ndarray-like
- array
- nd
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Test if a value is an array-like object containing only nonpositive integers.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- typed
- array
- typed array
- is
- istypedarray
- istyped
- View more
Test if an object has an inherited property.
Test if a value is an array-like object containing only nonpositive numbers.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- typed
- array
- typed array
- is
- istypedarray
- istyped
- View more
Test if an object's own property has an accessor descriptor.
Test if a value corresponds to a leap year in the Gregorian calendar.
Test if a value is an array containing a circular reference.
Test if a value is a square triangular number.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- number
- numeric
- triangular
- triangle
- binomial
- binomcoef
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Check if an environment is little endian.
Test if a value is an array-like object containing only negative 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 finite numbers.
- 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 null values.
C utilities for Node-API call assertions.