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# fast-levenshtein - Levenshtein algorithm in Javascript [](http://travis-ci.org/hiddentao/fast-levenshtein) [](https://badge.fury.io/js/fast-levenshtein) [](https://www.npmjs.com/package/fast-levenshtein) [](https://twitter.com/hiddentao) A Javascript implementation of the [Levenshtein algorithm](http://en.wikipedia.org/wiki/Levenshtein_distance) with locale-specific collator support. This uses [fastest-levenshtein](https://github.com/ka-weihe/fastest-levenshtein) under the hood. ## Features * Works in node.js and in the browser. * Locale-sensitive string comparisons if needed. * Comprehensive test suite. ## Installation ```bash $ npm install fast-levenshtein ``` **CDN** The latest version is now also always available at https://npm-cdn.com/pkg/fast-levenshtein/ ## Examples **Default usage** ```javascript var levenshtein = require('fast-levenshtein'); var distance = levenshtein.get('back', 'book'); // 2 var distance = levenshtein.get('我愛你', '我叫你'); // 1 ``` **Locale-sensitive string comparisons** It supports using [Intl.Collator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator) for locale-sensitive string comparisons: ```javascript var levenshtein = require('fast-levenshtein'); levenshtein.get('mikailovitch', 'Mikhaïlovitch', { useCollator: true}); // 1 ``` ## Building and Testing To build the code and run the tests: ```bash $ npm install -g grunt-cli $ npm install $ npm run build ``` ## Performance This uses [fastest-levenshtein](https://github.com/ka-weihe/fastest-levenshtein) under the hood. ## Contributing If you wish to submit a pull request please update and/or create new tests for any changes you make and ensure the grunt build passes. See [CONTRIBUTING.md](https://github.com/hiddentao/fast-levenshtein/blob/master/CONTRIBUTING.md) for details. ## License MIT - see [LICENSE.md](https://github.com/hiddentao/fast-levenshtein/blob/master/LICENSE.md)