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https://github.com/lopatnov/get-internal-type

A TypeScript library. Some cross-browser techniques to determine the JavaScript [[Class]] of an object.
https://github.com/lopatnov/get-internal-type

class cross-browser ie10-plus ie6 ie7 ie8 ie9 javascript nodejs object type typescript

Last synced: 20 days ago
JSON representation

A TypeScript library. Some cross-browser techniques to determine the JavaScript [[Class]] of an object.

Host: GitHub
URL: https://github.com/lopatnov/get-internal-type
Owner: lopatnov
License: apache-2.0
Created: 2019-10-23T17:07:54.000Z (about 5 years ago)
Default Branch: master
Last Pushed: 2023-03-04T05:29:59.000Z (over 1 year ago)
Last Synced: 2024-09-26T08:44:44.551Z (about 2 months ago)
Topics: class, cross-browser, ie10-plus, ie6, ie7, ie8, ie9, javascript, nodejs, object, type, typescript
Language: JavaScript
Homepage: https://lopatnov.github.io/get-internal-type/
Size: 724 KB
Stars: 0
Watchers: 1
Forks: 0
Open Issues: 4
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- Funding: .github/FUNDING.yml
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Security: SECURITY.md

Awesome Lists containing this project

README

        # get-internal-type [![Twitter](https://img.shields.io/twitter/url?url=https%3A%2F%2Fwww.npmjs.com%2Fpackage%2F%40lopatnov%2Fget-internal-type)](https://twitter.com/intent/tweet?text=Wow:&url=https%3A%2F%2Fwww.npmjs.com%2Fpackage%2F%40lopatnov%2Fget-internal-type)

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Determine the JavaScript [[Class]] of an object, where:

| Object Value | [[Class]] | Version |

|:------------- |:----- |:------ |

| undefined | undefined | 1.0.0 |

| null | null | 1.0.0 |

| false | boolean | 1.0.0 |

| Symbol("123") | symbol | 1.0.0 |

| 123 | number | 1.0.0 |

| BigInt(9007199254740991) | bigint | 1.0.0 |

| "hello" | string | 1.0.0 |

| /s+/gi | regexp | 1.0.0 |

| new Date() | date | 1.0.0 |

| new Error("A mistake") | error | 1.0.0 |

| {} | object | 1.0.0 |

| new (class SomeCustomClass {}) | object | 1.0.0 |

| () => {} | function | 1.0.0 |

| function(){} | function | 1.0.0 |

| class Simple {} | function | 1.0.0 |

| [1,2,3] | array | 1.0.0 |

| new Set() | set | 1.2.0 |

| new WeakSet() | set | 1.3.1 |

| new Map() | map | 1.2.0 |

| new WeakMap() | map | 1.3.1 |

| new Int8Array(8) |  typedarray | 1.3.0 |

| new Uint8Array() | typedarray | 1.3.0 |

| new Uint8ClampedArray() | typedarray | 1.3.0 |

| new Int16Array() | typedarray | 1.3.0 |

| new Uint16Array() | typedarray | 1.3.0 |

| new Int32Array() | typedarray | 1.3.0 |

| new Uint32Array() | typedarray | 1.3.0 |

| new Float32Array() | typedarray | 1.3.0 |

| new Float64Array() | typedarray | 1.3.0 |

| new BigInt64Array() | typedarray | 1.3.0 |

| new BigUint64Array() | typedarray | 1.3.0 |

| Promise.resolve('any') | promise | 1.4.0 |

| function* () {} | generatorfunction | 1.4.1 |

| (function* () {})() | generator | 1.4.1 |

| new ArrayBuffer(8) | arraybuffer | 1.5.0 |

| new DataView(buffer) | dataview | 1.5.0 |

## Install

[![https://nodei.co/npm/@lopatnov/get-internal-type.png?downloads=true&downloadRank=true&stars=true](https://nodei.co/npm/@lopatnov/get-internal-type.png?downloads=true&downloadRank=true&stars=true)](https://www.npmjs.com/package/@lopatnov/get-internal-type)

```shell

npm install @lopatnov/get-internal-type

```

[Browser](//lopatnov.github.io/get-internal-type/dist/get-internal-type.js)

```html

```

Browser support: Cross-browser

## Import package to the project

### TypeScript

```typescript

import getInternalType from 'get-internal-type';

```

### JavaScript

```javascript

var getInternalType = require("get-internal-type");

```

## Gets object type

### getInternalType(obj: any) => string

```typescript

console.log(getInternalType(undefined)) // expected "undefined"

console.log(getInternalType(null)) // expected "null"

console.log(getInternalType(false)) // expected "boolean"

console.log(getInternalType(Symbol("123"))) // expected "symbol"

console.log(getInternalType(123)) // expected "number"

console.log(getInternalType(BigInt(9007199254740991))) // expected "bigint"

console.log(getInternalType("hello")) // expected "string"

console.log(getInternalType(/s+/gi)) // expected "regexp"

console.log(getInternalType(new Date())) // expected "date"

console.log(getInternalType(new Error("A mistake"))) // expected "error"

console.log(getInternalType({})) // expected "object"

console.log(getInternalType(new (class SomeCustomClass {}))) // expected "object"

console.log(getInternalType(() => {})) // expected "function"

console.log(getInternalType(function(){})) // expected "function"

console.log(getInternalType(class Simple {})) // expected "function"

console.log(getInternalType([1,2,3])) // expected "array"

console.log(getInternalType(new Set())) // expected "set"

console.log(getInternalType(new WeakSet())) // expected "set"

console.log(getInternalType(new Map())) // expected "map"

console.log(getInternalType(new WeakMap())) // expected "map"

console.log(getInternalType(new Int8Array(8))) // expected "typedarray"

console.log(getInternalType(new Uint8Array())) // expected "typedarray"

console.log(getInternalType(new Uint8ClampedArray())) // expected "typedarray"

console.log(getInternalType(new Int16Array())) // expected "typedarray"

console.log(getInternalType(new Uint16Array())) // expected "typedarray"

console.log(getInternalType(new Int32Array())) // expected "typedarray"

console.log(getInternalType(new Uint32Array())) // expected "typedarray"

console.log(getInternalType(new Float32Array())) // expected "typedarray"

console.log(getInternalType(new Float64Array())) // expected "typedarray"

console.log(getInternalType(new BigInt64Array())) // expected "typedarray"

console.log(getInternalType(new BigUint64Array())) // expected "typedarray"

console.log(getInternalType(Promise.resolve('any'))) // expected "promise"

console.log(getInternalType(function* () {})) // expected "generatorfunction" (ES6)

console.log(getInternalType((function* () {})())) // expected "generator"

console.log(getInternalType(new ArrayBuffer(16))) // expected "arraybuffer"

console.log(getInternalType(new DataView(new ArrayBuffer(16)))) // expected "dataview"

```

## Demo

See, how it's working: [https://runkit.com/lopatnov/get-internal-type-demo](https://runkit.com/lopatnov/get-internal-type-demo)

Test it with a runkit: [https://npm.runkit.com/%40lopatnov%2Fget-internal-type](https://npm.runkit.com/%40lopatnov%2Fget-internal-type)

## Rights and Agreements

License [Apache-2.0](https://github.com/lopatnov/get-internal-type/blob/master/LICENSE)

Copyright 2019-2021 Oleksandr Lopatnov