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A robust & optimized `String.fromCodePoint` polyfill, based on the ECMAScript 6 specification.

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mathiasbynens/String.fromCodePoint

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ES6 String.fromCodePoint polyfill string.fromcodepoint on npm

An robust & optimized polyfill for the String.fromCodePoint method in ECMAScript 6.

This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the spec.

Other polyfills for String.fromCodePoint are available:

Installation

Via npm:

npm install string.fromcodepoint

Then, in Node.js:

var fromCodePoint = require('string.fromcodepoint');

In a browser:

<script src="https://bundle.run/string.fromcodepoint"></script>

NOTE: It's recommended that you install this module using a package manager such as npm, because loading multiple polyfills from a CDN (such as bundle.run) will lead to duplicated code.

Notes

A polyfill + test suite for String.prototype.codePointAt is available, too.

The tests for this repository are now used by Mozilla, to help ensure their native String.fromCodePoint implementation is correct.

For maintainers

How to publish a new release

  1. On the main branch, bump the version number in package.json:

    npm version patch

    Instead of patch, use minor or major as needed.

    Note that this produces a Git commit + tag.

  2. Push the release commit and tag:

    git push && git push --tags

    Our CI then automatically publishes the new release to npm.

Author

twitter/mathias
Mathias Bynens

License

This polyfill is available under the MIT license.

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A robust & optimized `String.fromCodePoint` polyfill, based on the ECMAScript 6 specification.

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