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2322 packages found
Test if a value is a 64-bit or 128-bit complex number.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- is
- iscomplex
- complex
- complex64
- complex128
- 64-bit
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Test whether an object contains a nested key path, either own or inherited.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- object
- obj
- deephas
- deephasown
- deephasproperty
- deephasownproperty
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Test if a value is a JavaScript boxed primitive.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- valid
- primitive
- object
- string
- number
- boolean
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Test if a value is undefined or null.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- undefined
- void
- null
- is
- isundefined
- isnull
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Test if a value is a native function.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- function
- fcn
- is
- isfunction
- native
- isnative
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Test if a value is Node transform stream-like.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- stream
- readable
- writable
- duplex
- transform
- node
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Test if a value is an EvalError object.
Test whether an object contains a nested key path.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- object
- obj
- deephas
- deephasown
- deephasownproperty
- property
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Test if an object's own property is readable and writable.
Test if a value is generator object-like.
Test if a value is a generator object.
Test if an object's own or inherited property is enumerable.
Test if a value is an array-like object containing only truthy values.
Test if an object's own and inherited property is readable and writable.
Test if an object's own property is read-only.
Test if a value is a URIError object.
Test if two arguments are strictly equal.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- equal
- same
- strict
- is
- isequal
- isstrictequal
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Test if a value is a skew-persymmetric matrix.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- is
- isndarray
- ndarray
- ndarray-like
- matrix
- ismatrix
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Test if an object's own property has an accessor descriptor.
Test if an object's own or inherited property has a data descriptor.