94 results for "keywords:"instanceof""

Type check values

Updated January 25, 2022 by @sindresorhus

Function argument validation for humans

Updated July 16, 2021 by @sindresorhus

A tiny javascript type testing tool

Updated July 8, 2021 by @gilbarbara

Enhances a JavaScript class by adding an is<Class> property to compare types between realms.

Updated December 6, 2021 by @acostalima

Elegant and battle-tested validation library for type-safe input data (for TypeScript and Flow)

Updated February 8, 2022 by @nvie

Module for type detection

Updated June 6, 2013 by @damartin

Determine the name of a value's constructor.

Updated February 16, 2022 by @stdlib-bot

Create custom JavaScript errors that also match instanceof.

Updated April 27, 2020 by @gi60s

Implement prototypical inheritance by replacing the prototype of one constructor with the prototype of another constructor.

Updated February 18, 2022 by @stdlib-bot

Runtime validation for TypeScript

Updated May 8, 2021 by @eveble-user

Test if a value is a regular expression.

Updated February 16, 2022 by @stdlib-bot

Test whether a value has in its prototype chain a specified constructor as a prototype property.

Updated August 23, 2021 by @stdlib-bot

WIP: Checking and comparing with the prototype

Updated December 2, 2021 by @nk12

is-any-type simple functionality alternative to check data type references such as typeof and instanceof

Updated August 4, 2021 by @restuwahyu13

Minimal JavaScript type checking library

Updated September 17, 2019 by @flexdinesh

Function argument validation for humans

Updated November 24, 2021 by @nwienert

Function argument validation for humans

Updated February 20, 2022 by @leonzalion

Create mixins which work with instanceof (friendly for unit tests).

Updated August 3, 2021 by @qubyte

The most simple, customizable and easy to use JavaScript standard inheritance library

Updated March 27, 2021 by @oothkoo

A collection of utilities dealing with object

Updated December 9, 2021 by @zielinskipawel

Check if a value is an error constructor

Updated April 7, 2021 by @sindresorhus

Check if the given value is of the particular type or types.

Updated September 5, 2020 by @devrafalko

Test if an object's prototype chain contains a provided prototype.

Updated August 22, 2021 by @stdlib-bot

Provides functionality for type checking

Updated July 31, 2021 by @je.an

Additional ESLint rules.

Updated December 30, 2021 by @brettz9