# is-primitive
> Returns `true` if the value is a primitive.
Latest version **3.0.1** (published 2018-06-10) · MIT license · 0 weekly downloads
> **Better alternative:** Use v === null || (typeof v !== "function" && typeof v !== "object") — Consider using a lighter alternative
## Install
```sh
npm install is-primitive
pnpm add is-primitive
yarn add is-primitive
bun add is-primitive
```
## Health
**Score 15/100 (F)** — status: abandoned.
Positive: no vulnerabilities.
Warnings: low downloads; no types; no esm support.
Negative: abandoned; low maintenance score.
## Facts
| | |
|---|---|
| Version | 3.0.1 |
| Published | 2018-06-10 |
| First published | 2014-09-26 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Node | >=0.10.0 |
| Dependencies | 0 |
| Unpacked size | 6.6 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 37 |
| Author | Jon Schlinkert |
| Maintainers | doowb, jonschlinkert |
| Keywords | boolean, check, is, number, primitive, string, symbol, type, typeof, util |
## Links
- npm: https://www.npmjs.com/package/is-primitive
- Repository: https://github.com/jonschlinkert/is-primitive
- Issues: https://github.com/jonschlinkert/is-primitive/issues
- npm.io page: https://npm.io/package/is-primitive
## Alternatives
- [memory-cache](https://npm.io/package/memory-cache.md) — 795.0K weekly downloads
- [@httptoolkit/proxy-agent](https://npm.io/package/@httptoolkit/proxy-agent.md) — 11.2K weekly downloads
- [express-cache-controller](https://npm.io/package/express-cache-controller.md) — 5.3K weekly downloads
- [http-cache-middleware](https://npm.io/package/http-cache-middleware.md) — 4.5K weekly downloads
- [cache2](https://npm.io/package/cache2.md) — 1.5K weekly downloads
## Recent versions
- 3.0.1 (latest) — 2018-06-10
- 3.0.0 — 2017-11-23
- 2.0.0 — 2015-03-17
- 1.0.0 — 2015-02-13
- 0.1.0 — 2014-09-26
## README
# is-primitive [](https://www.npmjs.com/package/is-primitive) [](https://npmjs.org/package/is-primitive) [](https://npmjs.org/package/is-primitive) [](https://travis-ci.org/jonschlinkert/is-primitive)
> Returns `true` if the value is a primitive.
Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.
## Install
Install with [npm](https://www.npmjs.com/):
```sh
$ npm install --save is-primitive
```
## Primitive values
The [Mozilla docs for "Primitive values"](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Primitive_values) defines specifies six data types that are primitives:
* `Boolean`
* `Null`
* `Undefined`
* `Number`
* `String`
* `Symbol` (new in ECMAScript 6)
## Usage
```js
var isPrimitive = require('is-primitive');
```
## true
All of the following return `true`:
```js
console.log(isPrimitive(false));
console.log(isPrimitive(true));
console.log(isPrimitive(null));
console.log(isPrimitive());
console.log(isPrimitive(42));
console.log(isPrimitive('abc'));
console.log(isPrimitive(Symbol()));
//=> true
```
## false
Everything else returns `false`:
```js
console.log(isPrimitive({}));
console.log(isPrimitive([]));
console.log(isPrimitive(function(){}));
console.log(isPrimitive(new Date()));
// et cetera...
//=> false
```
## About
Contributing
Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
Running Tests
Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
```sh
$ npm install && npm test
```
Building docs
_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_
To generate the readme, run the following command:
```sh
$ npm install -g verbose/verb#dev verb-generate-readme && verb
```
### Related projects
You might also be interested in these projects:
* [is-number](https://www.npmjs.com/package/is-number): Returns true if the value is a number. comprehensive tests. | [homepage](https://github.com/jonschlinkert/is-number "Returns true if the value is a number. comprehensive tests.")
* [is-plain-object](https://www.npmjs.com/package/is-plain-object): Returns true if an object was created by the `Object` constructor. | [homepage](https://github.com/jonschlinkert/is-plain-object "Returns true if an object was created by the `Object` constructor.")
* [kind-of](https://www.npmjs.com/package/kind-of): Get the native type of a value. | [homepage](https://github.com/jonschlinkert/kind-of "Get the native type of a value.")
### Contributors
| **Commits** | **Contributor** |
| --- | --- |
| 11 | [jonschlinkert](https://github.com/jonschlinkert) |
| 1 | [ljharb](https://github.com/ljharb) |
| 1 | [bttmly](https://github.com/bttmly) |
| 1 | [hemanth](https://github.com/hemanth) |
### Author
**Jon Schlinkert**
* [github/jonschlinkert](https://github.com/jonschlinkert)
* [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
### License
Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert).
Released under the [MIT License](LICENSE).
***
_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on November 23, 2017._
---
_Source: https://npm.io/package/is-primitive · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._