forked from lix-project/lix-website
71 lines
2.7 KiB
Markdown
71 lines
2.7 KiB
Markdown
|
# globalThis <sup>[![Version Badge][npm-version-svg]][npm-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]][npm-url]
|
||
|
|
|
||
|
|
An ECMAScript spec-compliant polyfill/shim for `globalThis`. Invoke its "shim" method to shim `globalThis` if it is unavailable.
|
||
|
|
|
||
|
|
This package implements the [es-shim API](https://github.com/es-shims/api) interface. It works in an ES3-supported environment and complies with the [spec proposal](https://github.com/tc39/proposal-global).
|
||
|
|
|
||
|
|
Most common usage:
|
||
|
|
```js
|
||
|
|
var globalThis = require('globalthis')(); // returns native globalThis if compliant
|
||
|
|
/* or */
|
||
|
|
var globalThis = require('globalthis/polyfill')(); // returns native globalThis if compliant
|
||
|
|
```
|
||
|
|
|
||
|
|
## Example
|
||
|
|
|
||
|
|
```js
|
||
|
|
var assert = require('assert');
|
||
|
|
|
||
|
|
// the below function is not CSP-compliant, but reliably gets the
|
||
|
|
// global object in sloppy mode in every engine.
|
||
|
|
var getGlobal = Function('return this');
|
||
|
|
|
||
|
|
assert.equal(globalThis, getGlobal());
|
||
|
|
```
|
||
|
|
|
||
|
|
```js
|
||
|
|
/* when `globalThis` is not present */
|
||
|
|
var shimmedGlobal = require('globalthis').shim();
|
||
|
|
/* or */
|
||
|
|
var shimmedGlobal = require('globalthis/shim')();
|
||
|
|
|
||
|
|
assert.equal(shimmedGlobal, globalThis);
|
||
|
|
assert.equal(shimmedGlobal, getGlobal());
|
||
|
|
```
|
||
|
|
|
||
|
|
```js
|
||
|
|
/* when `globalThis` is present */
|
||
|
|
var shimmedGlobal = require('globalthis').shim();
|
||
|
|
|
||
|
|
assert.equal(shimmedGlobal, globalThis);
|
||
|
|
assert.equal(shimmedGlobal, getGlobal());
|
||
|
|
```
|
||
|
|
|
||
|
|
## Tests
|
||
|
|
Simply clone the repo, `npm install`, and run `npm test`
|
||
|
|
|
||
|
|
[npm-url]: https://npmjs.org/package/globalthis
|
||
|
|
[npm-version-svg]: https://versionbadg.es/ljharb/globalThis.svg
|
||
|
|
[deps-svg]: https://david-dm.org/ljharb/globalThis.svg?theme=shields.io
|
||
|
|
[deps-url]: https://david-dm.org/ljharb/globalThis
|
||
|
|
[dev-deps-svg]: https://david-dm.org/ljharb/globalThis/dev-status.svg?theme=shields.io
|
||
|
|
[dev-deps-url]: https://david-dm.org/ljharb/globalThis#info=devDependencies
|
||
|
|
[npm-badge-png]: https://nodei.co/npm/globalthis.png?downloads=true&stars=true
|
||
|
|
[license-image]: https://img.shields.io/npm/l/globalthis.svg
|
||
|
|
[license-url]: LICENSE
|
||
|
|
[downloads-image]: https://img.shields.io/npm/dm/globalthis.svg
|
||
|
|
[downloads-url]: https://npm-stat.com/charts.html?package=globalthis
|
||
|
|
[codecov-image]: https://codecov.io/gh/es-shims/globalThis/branch/main/graphs/badge.svg
|
||
|
|
[codecov-url]: https://app.codecov.io/gh/es-shims/globalThis/
|
||
|
|
[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/es-shims/globalThis
|
||
|
|
[actions-url]: https://github.com/es-shims/globalThis/actions
|