kind-of
Get the native type of a value.
Get the native type of a value.
Returns true if the value is an object and not an array or null.
Returns true if an object was created by the `Object` constructor, or Object.create(null).
JavaScript utilities for arrays.
Smart and small type lib.
Good judgment of object type.
Base class for easily creating meaningful and quiet by default Error classes with sane defaults and assertion in mind.
Typescript and javascript utilities. clone: deep copy the almost all js structures (plain objects, sets, maps, buffers, class instances etc.) with support circular/duplicate references and customizing; whatIsIt: typeof+instanceOf on steroids with support
Concise type assertions like a<map<fn:s>>
数据类型分类两类,基本类型和引用类型。
Takes any JavaScript data type or object as an input and returns a string describing the type of the input.
A collection of utilities dealing with object