Get the native JavaScript type of a value, fast. Used by superstruct, micromatch and many others!

Curried property accessor function that resolves deeply-nested object properties via dot/bracket-notation string path while mitigating TypeErrors via friendly and composable API.

Is the value an object, and not an array or null?

Typeis. it's the smart and simple javaScript type checker

Is the typeof value a javascript primitive?

✔️JavaScript类型检查，弥补typeof不足

Jest matcher that allows you to test the expected type of value.

Check native type of the given value and throw TypeError if not okey. Expressive, elegant, behavior-driven API, good descriptive default error messages, simple and clean syntax.

Detects precise type of objects like `Array()`, `new Number(1)`, `new Boolean(true)`, etc

👺 weak but accurate type checking that returns a string representation of input's type

Detect native Symbol.toStringTag support.

👻 only 0.25 kb. what.js is a simple library to get the type of variables. enganced typeof function.

Determine the specification defined classification of an object.

Can be used to distinguish between these types: boolean, number, string, function, array, date, regexp, object, error.

Test if two arguments have the same type.

Determine the name of a value's constructor.

Tiny library for determining the type. Can detect custom types.

This repository includes all basics of JavaScript . It is a perfect option for beginners and those want to refresh their knowledge. This repo includes practical examples so far, and the comments explains everything from A-Z.

Test if a value is object-like.

Test if two arguments have the same native class.