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4469 packages found
Get the native type of a value.
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
- View more
Returns true if a value is a plain object, array or function.
Test if a value is a function.
Check if something is a generator function
Check that given value is `GeneratorFunction`
- check
- es2015
- es6
- es7
- function
- functions
- generator
- generatorfunction
- generators
- is
- is-function
- is-generator
- is-generator-function
- next
Validates if a value is a function.
Return a function which tests if every element in an array passes a test condition.
Return a function which tests if every element in an array-like object passes a test condition.
Provides calculation functions related to complex numbers.
Set of shortands of Object.prototype.toString for fast and simple type check
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- speed
- includes
- hash
- getopt
- throat
- copy
- fullwidth
- folder
- Symbol.toStringTag
- sns
- getOwnPropertyDescriptor
- every
- Array
- Iterator
- View more
Check if something is an ES7 async function
Isomorphic, functional type-checking for Javascript
Check whether a value is a `Generator` or `GeneratorFunction`. The `co` way, more strict checking. Always return boolean true or false, never null or undefined.
- check
- es2015
- es6
- es7
- function
- functions
- generator
- generatorfunction
- generators
- is
- is-function
- is-generator
- is-generator-function
- next
Type predicate functions for checking if a value is of a specific type or asserting that it is.
A function is a set of statements that performs a task or calculates a value.
- extra
- function
- after
- arity
- before
- flip
- once
- partial
- partialRight
- InvocationControl
- Resolver
- ARGUMENTS
- COMPARE
- FALSE
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Check that given value is Generator
- check
- es2015
- es6
- es7
- function
- functions
- generator
- generatorfunction
- generators
- is
- is-function
- is-generator
- is-generator-function
- next
A utility to determine if a value is a function
- jest
- task
- querystring
- airbnb
- hasOwnProperty
- hasOwn
- es2015
- Array.prototype.flatMap
- cors
- watchFile
- input
- make
- protocol-buffers
- Uint16Array
- View more