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kind-of

Get the native type of a value.

  • 3.2.2
  • Source
  • npm
  • Socket score

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116M
increased by13.54%
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What is kind-of?

The kind-of npm package is a utility library that allows developers to check the type of a given value in JavaScript. It provides a simple API to determine whether a value is a string, number, array, object, function, and other JavaScript types. This can be particularly useful for type checking and validation in applications where type safety is important.

What are kind-of's main functionalities?

Type checking for primitives

This feature allows you to check the type of primitive values such as numbers, strings, and booleans.

"use strict"; const kindOf = require('kind-of'); console.log(kindOf(1)); // 'number' console.log(kindOf('hello')); // 'string' console.log(kindOf(true)); // 'boolean'

Type checking for objects

This feature allows you to check the type of object-based values such as plain objects, arrays, and regular expressions.

"use strict"; const kindOf = require('kind-of'); console.log(kindOf({})); // 'object' console.log(kindOf([])); // 'array' console.log(kindOf(/foo/)); // 'regexp'

Type checking for functions and undefined

This feature allows you to check the type of functions and the undefined value.

"use strict"; const kindOf = require('kind-of'); console.log(kindOf(function () {})); // 'function' console.log(kindOf(undefined)); // 'undefined'

Type checking for null and dates

This feature allows you to check the type of null values and date objects.

"use strict"; const kindOf = require('kind-of'); console.log(kindOf(null)); // 'null' console.log(kindOf(new Date())); // 'date'

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Package last updated on 16 May 2017

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