47 lines
2.1 KiB
Markdown
47 lines
2.1 KiB
Markdown
# unbox-primitive <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
|
|
|
|
[![github actions][actions-image]][actions-url]
|
|
[![coverage][codecov-image]][codecov-url]
|
|
[![dependency status][deps-svg]][deps-url]
|
|
[![dev dependency status][dev-deps-svg]][dev-deps-url]
|
|
[![License][license-image]][license-url]
|
|
[![Downloads][downloads-image]][downloads-url]
|
|
|
|
[![npm badge][npm-badge-png]][package-url]
|
|
|
|
Unbox a boxed JS primitive value. This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and works despite ES6 Symbol.toStringTag.
|
|
|
|
## Example
|
|
|
|
```js
|
|
var unboxPrimitive = require('unbox-primitive');
|
|
var assert = require('assert');
|
|
|
|
assert.equal(unboxPrimitive(new Boolean(false)), false);
|
|
assert.equal(unboxPrimitive(new String('f')), 'f');
|
|
assert.equal(unboxPrimitive(new Number(42)), 42);
|
|
const s = Symbol();
|
|
assert.equal(unboxPrimitive(Object(s)), s);
|
|
assert.equal(unboxPrimitive(new BigInt(42)), 42n);
|
|
|
|
// any primitive, or non-boxed-primitive object, will throw
|
|
```
|
|
|
|
## Tests
|
|
Simply clone the repo, `npm install`, and run `npm test`
|
|
|
|
[package-url]: https://npmjs.org/package/unbox-primitive
|
|
[npm-version-svg]: https://versionbadg.es/ljharb/unbox-primitive.svg
|
|
[deps-svg]: https://david-dm.org/ljharb/unbox-primitive.svg
|
|
[deps-url]: https://david-dm.org/ljharb/unbox-primitive
|
|
[dev-deps-svg]: https://david-dm.org/ljharb/unbox-primitive/dev-status.svg
|
|
[dev-deps-url]: https://david-dm.org/ljharb/unbox-primitive#info=devDependencies
|
|
[npm-badge-png]: https://nodei.co/npm/unbox-primitive.png?downloads=true&stars=true
|
|
[license-image]: https://img.shields.io/npm/l/unbox-primitive.svg
|
|
[license-url]: LICENSE
|
|
[downloads-image]: https://img.shields.io/npm/dm/unbox-primitive.svg
|
|
[downloads-url]: https://npm-stat.com/charts.html?package=unbox-primitive
|
|
[codecov-image]: https://codecov.io/gh/ljharb/unbox-primitive/branch/main/graphs/badge.svg
|
|
[codecov-url]: https://app.codecov.io/gh/ljharb/unbox-primitive/
|
|
[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/unbox-primitive
|
|
[actions-url]: https://github.com/ljharb/unbox-primitive/actions
|