Found 34 results for isUndefined
Comprehensive TypeScript/JavaScript utility library with cross-environment support (Node.js, browser, web worker) providing helper functions, polyfills (ES5-ES2023), type checking utilities, and optimized implementations for better minification and code r
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
utils for daybrush
A set of JavaScript helper functions to check for types
Curried TypeScript type guards for primitive types and classes
Node toolkit adding some helpful functions: files, array, string, color, math ...
Utility library for javascript type checking.
ExtremeJS Utilities
Helpful and useful javascript functions
A very simple "typeof" detection
helper tools for javascript validation
Collection of methods for check
Simple type checker in JavaScript.
Type detection beyond `typeof`
Simple and light-weight JavaScript type checker that brings convenience!
locore is a Standard library. the library with basic JavaScript methods to improve development efficiency.
JS常用工具封装
A very simple "typeof" detection
Handy utils offers developers a powerful and easy-to-use toolset. With its clean, modular and scalable code structure, it accelerates development processes and reduces code complexity. With a wide range of functions, it offers ready-made methods for solvi
javascript类型判断
The fast and reliable JS type-checking toolbox!
declarative check type of function arguments and development profiler for your functions
A fixed version of the native javascript typeof function.
Type check in TypeScript
Simple type checker in JavaScript.
This package is for confirming data that will take arguments to verify its value and type.
This library is to check for null and undefined values in JSON objects
This library provides core functionalities for determining the type of a given object, supporting various JavaScript data types.
Check if the given value is of a specific type.
A node.js module to get, compare and check types
Curried TypeScript type guards for primitive types and classes
JavaScript library to check data types
A small set of functions to check value against a specific type
Check if the parameter is undefined