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2644 packages found
zero dependencies vanilla JavaScript utils.
Test if a value is an Int32Array.
Test whether all elements in a collection fail a test implemented by a predicate function.
Test whether a collection contains at least `n` elements which pass a test implemented by a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- any
- every
- all
- array.some
- array.every
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Test whether at least one property in an object passes a test implemented by a predicate function.
Test if a value is an arguments object.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- arguments
- args
- isarguments
- array-like
- object
- obj
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Test whether whether any 'own' property of a provided object satisfies a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- any
- iterate
- object
- property
- properties
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Test whether at least one element in a collection passes a test implemented by a predicate function, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- any
- anyright
- array.some
- iterate
- collection
- View more
Test whether all properties (own and inherited) of an object pass a test implemented by a predicate function.
Test whether every property in an object fails a test implemented by a predicate function.
Test whether all own properties of an object pass a test implemented by a predicate function.
Tests whether every own property of an object fails a test implemented by a predicate function.
Test whether a value has in its prototype chain a specified constructor as a prototype property.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- prototype
- proto
- inherit
- inherits
- class
- oop
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Test whether all elements in a collection pass a test implemented by a predicate function, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- every
- all
- everyright
- array.every
- iterate
- View more
Test whether some `own` properties of a provided object satisfy a predicate function for at least `n` properties.
A type-safe set of utilities that focuses on reducing the amount of test code that you write while maximizing coverage. Compatible with BDD testing frameworks like Jasmine and Mocha.
Test whether all elements in a collection fail a test implemented by a predicate function, iterating from right to left.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- none
- noneright
- every
- all
- array.every
- View more
Test if a value is a Date object.
Test whether a collection contains at least `n` elements which pass a test implemented by a predicate function, iterating from right to left.
Test whether an object contains at least n properties (own and inherited) which pass a test implemented by a predicate function.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- test
- predicate
- any
- every
- all
- object.some
- object.every
- View more