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typy
Minimal JavaScript type checking library
is2
A type checking library where each exported function returns either true or false and does not throw. Also added tests.
type-check
type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.
kind-of
Get the native type of a value.
typical
Isomorphic, functional type-checking for Javascript
xjot
A extensible object type checking library
unist-util-is
unist utility to check if a node passes a test
check-types
A little library for asserting types and values, with zero dependencies.
file-type
Detect the file type of a file, stream, or data
@stdlib/assert-has-tostringtag-support
Detect native Symbol.toStringTag support.
@stdlib/utils-native-class
Determine the specification defined classification of an object.
@stdlib/assert-is-array
Test if a value is an array.
@stdlib/utils-constructor-name
Determine the name of a value's constructor.
@stdlib/assert-is-object-like
Test if a value is object-like.
@stdlib/number-float64-base-normalize
Return a normal number `y` and exponent `exp` satisfying `x = y * 2^exp`.
@stdlib/assert-is-uint8array
Test if a value is a Uint8Array.
@stdlib/assert-is-uint16array
Test if a value is a Uint16Array.
@stdlib/assert-is-string
Test if a value is a string.
@stdlib/assert-is-object
Test if a value is an object.
@stdlib/assert-is-buffer
Test if a value is a Buffer object.