tools: move eslint from tools to tools/node_modules

This is required because we need to add the babel-eslint dependency
and it has to be able to resolve "eslint".
babel-eslint is required to support future ES features such as async
iterators and import.meta.

Refs: https://github.com/nodejs/node/pull/17755
PR-URL: https://github.com/nodejs/node/pull/17820
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

1 files changed, 104 insertions, 0 deletions

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+# fast-levenshtein - Levenshtein algorithm in Javascript
+
+[![Build Status](https://secure.travis-ci.org/hiddentao/fast-levenshtein.png)](http://travis-ci.org/hiddentao/fast-levenshtein)
+[![NPM module](https://badge.fury.io/js/fast-levenshtein.png)](https://badge.fury.io/js/fast-levenshtein)
+[![NPM downloads](https://img.shields.io/npm/dm/fast-levenshtein.svg?maxAge=2592000)](https://www.npmjs.com/package/fast-levenshtein)
+[![Follow on Twitter](https://img.shields.io/twitter/url/http/shields.io.svg?style=social&label=Follow&maxAge=2592000)](https://twitter.com/hiddentao)
+
+An efficient Javascript implementation of the [Levenshtein algorithm](http://en.wikipedia.org/wiki/Levenshtein_distance) with locale-specific collator support.
+
+## Features
+
+* Works in node.js and in the browser.
+* Better performance than other implementations by not needing to store the whole matrix ([more info](http://www.codeproject.com/Articles/13525/Fast-memory-efficient-Levenshtein-algorithm)).
+* Locale-sensitive string comparisions if needed.
+* Comprehensive test suite and performance benchmark.
+* Small: <1 KB minified and gzipped
+
+## Installation
+
+### node.js
+
+Install using [npm](http://npmjs.org/):
+
+```bash
+$ npm install fast-levenshtein
+```
+
+### Browser
+
+Using bower:
+
+```bash
+$ bower install fast-levenshtein
+```
+
+If you are not using any module loader system then the API will then be accessible via the `window.Levenshtein` object.
+
+## 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
+
+_Thanks to [Titus Wormer](https://github.com/wooorm) for [encouraging me](https://github.com/hiddentao/fast-levenshtein/issues/1) to do this._
+
+Benchmarked against other node.js levenshtein distance modules (on Macbook Air 2012, Core i7, 8GB RAM):
+
+```bash
+Running suite Implementation comparison [benchmark/speed.js]...
+>> levenshtein-edit-distance x 234 ops/sec ±3.02% (73 runs sampled)
+>> levenshtein-component x 422 ops/sec ±4.38% (83 runs sampled)
+>> levenshtein-deltas x 283 ops/sec ±3.83% (78 runs sampled)
+>> natural x 255 ops/sec ±0.76% (88 runs sampled)
+>> levenshtein x 180 ops/sec ±3.55% (86 runs sampled)
+>> fast-levenshtein x 1,792 ops/sec ±2.72% (95 runs sampled)
+Benchmark done.
+Fastest test is fast-levenshtein at 4.2x faster than levenshtein-component
+```
+
+You can run this benchmark yourself by doing:
+
+```bash
+$ npm install
+$ npm run build
+$ npm run benchmark
+```
+
+## 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)