Validate Packages

Test if a value corresponds to a leap year in the Gregorian calendar.

Test whether a value is a localhost hostname.

Test if a value is an Int32Array.

Test if a value is an array-like object containing only Date objects.

Test whether a string contains only numeric digits.

Test whether a string contains only numeric digits.

Test if a value is an Int8Array.

Test if a value is an array-like object containing only integers.

Test if a value is iterable-like.

Test if a value is a lowercase string.

Test if a value is a lowercase string.

Test if a value is a 2-dimensional ndarray-like object.

Test if an object has a specified method name.

Test if a value is an Int16Array.

Test if a value is generator object-like.

Test whether a string contains only hexadecimal digits.

An unopinionated and configurable linter and style checker for Pug (formerly Jade)

Validate an email => true | false.

Test whether at least one element in an array passes a test implemented by a predicate function, while iterating from right to left.

Base array assertion utilities.