<h1 align="center">ranges-merge</h1>

<p align="center">Merge and sort string index ranges</p>

<p align="center">
  <a href="https://codsen.com/os/ranges-merge" rel="nofollow noreferrer noopener">
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  </a>
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    <img src="https://img.shields.io/badge/-npm-blue?style=flat-square" alt="page on npm">
  </a>
  <a href="https://github.com/codsen/codsen/tree/main/packages/ranges-merge" rel="nofollow noreferrer noopener">
    <img src="https://img.shields.io/badge/-github-blue?style=flat-square" alt="page on github">
  </a>
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    <img src="https://img.shields.io/npm/dm/ranges-merge.svg?style=flat-square" alt="Downloads per month">
  </a>
  <a href="https://codsen.com/os/ranges-merge/changelog" rel="nofollow noreferrer noopener">
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  </a>
  <img src="https://img.shields.io/badge/licence-MIT-brightgreen.svg?style=flat-square" alt="MIT Licence">
</p>

## Install

This package is [pure ESM](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c). If you're not ready yet, install an older version of this program, 7.1.0 (`npm i ranges-merge@7.1.0`).

```bash
npm i ranges-merge
```

## Quick Take

```js
import { strict as assert } from "assert";

import { rMerge } from "ranges-merge";

// joining edges:
assert.deepEqual(
  rMerge([
    [1, 2],
    [2, 3],
    [9, 10],
  ]),
  [
    [1, 3],
    [9, 10],
  ],
);

// an overlap:
assert.deepEqual(
  rMerge([
    [1, 5],
    [2, 10],
  ]),
  [[1, 10]],
);
```

## Documentation

Please [visit codsen.com](https://codsen.com/os/ranges-merge/) for a full description of the API.

## Contributing

To report bugs or request features or assistance, [raise an issue](https://github.com/codsen/codsen/issues/new/choose) on GitHub.

## Licence

MIT License

Copyright © 2010-2025 Roy Revelt and other contributors

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