Package Exports

string.prototype.includes

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (string.prototype.includes) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

ES6 `String.prototype.includes` polyfill

A robust & optimized ES3-compatible polyfill for the String.prototype.includes method (previously known as String.prototype.contains) in ECMAScript 6.

Other polyfills for String.prototype.includes are available:

https://github.com/paulmillr/es6-shim/blob/d8c4ec246a15e7df55da60b7f9b745af84ca9021/es6-shim.js#L186-L190 by Paul Miller (~~fails some tests~~ passes all tests)
https://github.com/google/traceur-compiler/blob/315bdad05d41de46d25337422d66686d63100d7a/src/runtime/polyfills/String.js#L68-L86 by Google (~~fails a lot of tests~~ now uses this polyfill and passes all tests)

Installation

In a browser:

<script src="includes.js"></script>

Via npm:

npm install string.prototype.includes

Then, in Node.js:

require('string.prototype.includes');

// On Windows and on Mac systems with default settings, case doesn’t matter,
// which allows you to do this instead:
require('String.prototype.includes');

Notes

Polyfills + test suites for String.prototype.startsWith and String.prototype.endsWith are available, too.

Author


Mathias Bynens

License

This polyfill is available under the MIT license.

string.prototype.includes