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110 packages found
Make assertions and perform checks for types and literal values
Create mixins which work with instanceof (friendly for unit tests).
An extension to the `mout/lang` utilities
- AMD
- bugfix
- camelCase
- check
- checks
- CJS
- CommonJS
- ECMAScript
- ES
- extension
- fix
- instanceOf
- isKind
- isPrimitive
- View more
Type check values: `is.string('🦄') //=> true`
Functions for testing the types of JS values
collection of all 'x-is-...' to test types of values
Call your functions using instanceof operator (drunk programming only)
Runtime validation for TypeScript
- eveble
- typend
- simplecheck
- check
- meteor
- variable
- instanceof
- instance
- evaluation
- matcher
- match
- typescript
- runtime
- validator
Additional ESLint rules.
A class that holds a set of predicate methods that detects the native type of the input.
Test if your value is a ES6:Generator or ES6:GeneratorFunction
A collection of utilities dealing with object
- check
- is
- is-object
- isobject
- to-object
- toobject
- javascript
- kind
- kind-of
- object
- type
- typeof
- instanceof
- value
- View more
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
- View more
The object validator for TypeScript.
- scheme
- object
- typesafe
- typescript
- firebase
- type
- types
- check
- checking
- validator
- validate
- validation
- utility
- util
- View more
Use a Symbol from the registry to identify instances across realms or module versions
Lightweight replacement for the ow validation library meant for browser usage.
A better alternative to the typeof-operator in JS. Utilizes the internal [[CLASS]] property.
Create typed overloads for functions
Angular form validation on steroids
Additional ESLint rules.