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934 packages found
Get the native type of a value.
Check if something is a generator function
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 that given value is `GeneratorFunction`
- check
- es2015
- es6
- es7
- function
- functions
- generator
- generatorfunction
- generators
- is
- is-function
- is-generator
- is-generator-function
- next
Return a function which tests if every element in an array passes a test condition.
Validates if a value is a function.
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
Check if something is an ES7 async function
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
- View more
Type predicate functions for checking if a value is of a specific type or asserting that it is.
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
Isomorphic, functional type-checking for Javascript
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
undefined is not a function and it's likely to remain so forever
A simple set of functions that return a boolean.