https://github.com/es-shims/array.prototype.slice
ES spec-compliant `Array.prototype.slice` shim/polyfill/replacement that works as far down as ES3
https://github.com/es-shims/array.prototype.slice
array ecmascript javascript polyfill shim slice
Last synced: 4 months ago
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ES spec-compliant `Array.prototype.slice` shim/polyfill/replacement that works as far down as ES3
- Host: GitHub
- URL: https://github.com/es-shims/array.prototype.slice
- Owner: es-shims
- License: mit
- Created: 2022-05-26T03:00:26.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2025-05-16T05:18:32.000Z (8 months ago)
- Last Synced: 2025-09-30T04:55:47.465Z (4 months ago)
- Topics: array, ecmascript, javascript, polyfill, shim, slice
- Language: JavaScript
- Homepage:
- Size: 49.8 KB
- Stars: 1
- Watchers: 4
- Forks: 1
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Funding: .github/FUNDING.yml
- License: LICENSE
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README
# array.prototype.slice [![Version Badge][npm-version-svg]][package-url]
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An ES spec-compliant `Array.prototype.slice` shim/polyfill/replacement that works as far down as ES3.
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](https://tc39.es/ecma262/#sec-array.prototype.slice).
Because `Array.prototype.slice` depends on a receiver (the “this” value), the main export takes the array to operate on as the first argument.
## Engines where this is needed
Note: this list is not exhaustive.
- Safari 10 - 13
- Chrome 48+ ([v8 bug](https://bugs.chromium.org/p/v8/issues/detail?id=10381))
- node 6+
## Example
```js
var slice = require('array.prototype.slice');
var assert = require('assert');
var a = [1, 2, 3];
assert.deepEqual(slice(a, 1, 2), [2]);
assert.deepEqual(slice(a, -2), [2, 3]);
```
```js
var slice = require('array.prototype.slice');
var assert = require('assert');
/* when Array#slice is not present */
delete Array.prototype.slice;
var shimmed = slice.shim();
assert.equal(shimmed, slice.getPolyfill());
assert.equal(shimmed, Array.prototype.slice);
assert.deepEqual([1, 2, 3].slice(1, 2), slice([1, 2, 3], 1, 2));
```
```js
var slice = require('array.prototype.slice');
var assert = require('assert');
/* when Array#slice is present */
var shimmed = slice.shim();
assert.equal(shimmed, Array.prototype.slice);
assert.deepEqual([1, 2, 3].slice(1, 2), slice([1, 2, 3], 1, 2));
```
## Tests
Simply clone the repo, `npm install`, and run `npm test`
[package-url]: https://npmjs.org/package/array.prototype.slice
[npm-version-svg]: https://versionbadg.es/es-shims/Array.prototype.slice.svg
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[dev-deps-url]: https://david-dm.org/es-shims/Array.prototype.slice#info=devDependencies
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[license-url]: LICENSE
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