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A fast, modular oop-inheritance library for javascript. Minimal basics combined with powerful decorators.
Get the type of something. Seriously.
Simple Object type/name checks
- is*
- type
- typeof
- instanceof
- type name
- object name
- function name
- isString
- isNumber
- isArray
- isObject
- isPromise
- isWeakMap
- isMap
Variable type comparison
Type utilities
Use Instance Of by type name
Like instanceof, but uses class name strings.
Determine if a value is an instance of a type
A class that holds a set of predicate methods that detects the native type of the input.
is-any-type simple functionality alternative to check data type references such as typeof and instanceof
Check if the given value is of the particular type or types.
Validate the type of object's properties.
get the type of a javascript object.
Check if a value is an error constructor
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
- View more
Create mixins which work with instanceof (friendly for unit tests).
Type check values: `is.string('🦄') //=> true`
Workaround for subclassing errors. Both instanceof and stack are functional.