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76 packages found

The `util.is*` functions introduced in Node v0.12.

published version 1.0.3, 4 years ago1717 dependents licensed under $MIT
293,494,553

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

published version 0.12.5, 2 months ago33 dependents licensed under $MIT
2,109,630

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

published version 9.3.0, 2 years ago37 dependents licensed under $Artistic-2.0
1,062,280

utils for daybrush

published version 1.13.0, 2 years ago88 dependents licensed under $MIT
871,931

A set of JavaScript helper functions to check for types

published version 1.2.20, 4 days ago5 dependents licensed under $MIT
309,258

Curried TypeScript type guards for primitive types and classes

published version 0.7.0, 5 years ago8 dependents licensed under $MIT
26,352

TypeScript typeof utility helper with no dependencies.

published version 2.1.0, a year ago19 dependents licensed under $MIT
15,874

Node toolkit adding some helpful functions: files, array, string, color, math ...

published version 0.1.7, 8 years ago2 dependents licensed under $MIT
4,231

A javascript library which allows to check javascript value types at runtime

published version 1.0.0, 7 years ago3 dependents licensed under $MIT
3,190

Utility library for javascript type checking.

published version 0.1.6, 4 years ago3 dependents licensed under $MIT
1,976

Common typescript ready prototypes available in both CommonJS and ECMAScript

published version 3.0.5, 3 years ago3 dependents licensed under $MIT
1,421

ExtremeJS Utilities

published version 1.0.0-beta.22, a year ago3 dependents licensed under $MIT
809

helper tools for javascript validation

published version 2.4.0, 4 years ago0 dependents licensed under $MIT
284

This library provides next util: isBoolean, isFunction, isNumber, isNumbers, isObject and isString, function can be object, number can not be NaN.

published version 17.0.0, a year ago3 dependents licensed under $MIT
203

Collection of methods for check

published version 1.2.7, a month ago6 dependents licensed under $MIT
189

Some util functions for personal use

published version 1.19.3-20250629, 12 days ago2 dependents licensed under $MIT
129

A utility library for type checks and type manipulation in JavaScript and TypeScript, providing functions to determine types and verify values like null, undefined, boolean, number, and more.

published version 2.0.0, 23 days ago4 dependents licensed under $MIT
97

Basic type checker

published version 2.0.3, 6 years ago2 dependents licensed under $ISC
84

js 工具库

published version 1.9.6-beta.0, 4 years ago1 dependents licensed under $ISC
92
published version 1.0.0, 5 years ago0 dependents licensed under $MIT
85