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
Type detection beyond `typeof`
A very simple "typeof" detection
Collection of methods for check
helper tools for javascript validation
Simple type checker in JavaScript.
Simple and light-weight JavaScript type checker that brings convenience!
A fixed version of the native javascript typeof function.
JS常用工具封装
locore is a Standard library. the library with basic JavaScript methods to improve development efficiency.
Type check in TypeScript
A node.js module to get, compare and check types
This package is for confirming data that will take arguments to verify its value and type.
Simple type checker in JavaScript.
declarative check type of function arguments and development profiler for your functions
This library is to check for null and undefined values in JSON objects
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
Curried TypeScript type guards for primitive types and classes
This library provides core functionalities for determining the type of a given object, supporting various JavaScript data types.
Helpful and useful javascript functions
The fast and reliable JS type-checking toolbox!
javascript类型判断
Check if the given value is of a specific type.
A very simple "typeof" detection
Check if the parameter is undefined
A small set of functions to check value against a specific type
JavaScript library to check data types