Initial commit

Author: jpvanhal

.editorconfig

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+root = true
+
+[*]
+indent_style = space
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_size = 2

.eslintrc

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+{
+  "extends": "airbnb-base/legacy",
+  "env": {
+    "mocha": true
+  }
+}

.gitignore

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+node_modules/

.travis.yml

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+language: node_js
+node_js:
+  - "6"
+  - "4"

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) Fast Monkeys (www.fastmonkeys.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# is-browser-supported [![Build Status](https://travis-ci.org/fastmonkeys/is-browser-supported.svg?branch=master)](https://travis-ci.org/fastmonkeys/is-browser-supported)
+
+Check if user agent string matches with browser criterias like in [Autoprefixer](https://github.com/postcss/autoprefixer).
+
+## Install
+
+```
+$ npm install --save is-browser-supported
+```
+
+
+## Usage
+
+```js
+const isBrowserSupported = require('is-browser-supported');
+
+isBrowserSupported('Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)', 'last 1 version');
+//=> false
+
+isBrowserSupported('Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; AS; rv:11.0) like Gecko', 'last 1 version');
+//=> true
+```
+
+
+## API
+
+### isBrowserSupported(userAgent, [selections])
+
+#### userAgent
+
+Type: `string`
+
+A user agent string to be checked.
+
+#### selections
+
+Type: `string`<br>
+Default: [same as Browserslist](https://github.com/ai/browserslist#queries)
+
+Browser criteria to check the user agent string against, see [Browserslist's documentation](https://github.com/ai/browserslist#queries) for more details.
+
+
+## License
+
+MIT © [Fast Monkeys](http://www.fastmonkeys.com)

index.js

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+var browserslist = require('browserslist');
+var useragent = require('useragent');
+
+function getBrowserName(family) {
+  var browserNames = {
+    'BlackBerry WebKit': 'bb',
+    'Chrome Mobile': 'and_chr',
+    'Firefox Mobile': 'and_ff',
+    'IE Mobile': 'ie_mob',
+    'Mobile Safari': 'ios_saf',
+    'Opera Mobile': 'op_mob',
+    'Samsung Internet': 'samsung',
+    'UC Browser': 'and_uc'
+  };
+  return browserNames[family] || family;
+}
+
+function getBrowserVersionFromUserAgent(userAgent) {
+  var agent = useragent.parse(userAgent);
+  var version = [agent.major, agent.minor, agent.patch];
+  var browserName = getBrowserName(agent.family);
+  while (version.length > 0) {
+    try {
+      return browserslist(browserName + ' ' + version.join('.'))[0];
+    } catch (e) {
+      // Ignore unknown browser query error
+    }
+    version.pop();
+  }
+  return 'unknown';
+}
+
+module.exports = function isBrowserSupported(userAgent, selections) {
+  var browsersSupported = browserslist(selections);
+  var browser = getBrowserVersionFromUserAgent(userAgent);
+  return browsersSupported.indexOf(browser) !== -1;
+};

package.json

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+{
+  "name": "is-browser-supported",
+  "version": "1.0.0",
+  "description": "Check if user agent string matches with browser criterias like in Autoprefixer",
+  "license": "MIT",
+  "repository": "fastmonkeys/is-browser-supported",
+  "author": {
+    "name": "Janne Vanhala",
+    "email": "janne@fastmonkeys.com"
+  },
+  "engines": {
+    "node": ">=4"
+  },
+  "scripts": {
+    "test": "eslint . && mocha test.js"
+  },
+  "keywords": [
+    "agent",
+    "browser",
+    "browser version",
+    "user-agent",
+    "user agent",
+    "useragent",
+    "version"
+  ],
+  "dependencies": {
+    "browserslist": "^1.4.0",
+    "useragent": "^2.1.9"
+  },
+  "devDependencies": {
+    "eslint": "^3.8.1",
+    "eslint-config-airbnb-base": "^9.0.0",
+    "eslint-plugin-import": "^2.0.1",
+    "mocha": "^3.1.2"
+  }
+}

test.js

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+/* eslint-disable func-names */
+var assert = require('assert');
+var isBrowserSupported = require('.');
+
+describe('isBrowserSupported()', function () {
+  var tests = [
+    {
+      userAgent: 'Mozilla/5.0 (Linux; U; Android 6.0; en-US; iris 870 4G Build/MRA58K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 UCBrowser/11.0.5.850 U3/0.8.0 Mobile Safari/534.30',
+      selections: 'and_uc >= 11',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (Linux; U; Android 4.0.3; ko-kr; LG-L160L Build/IML74K) AppleWebkit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30',
+      selections: 'android >= 4',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (BlackBerry; U; BlackBerry 9900; en) AppleWebKit/534.11+ (KHTML, like Gecko) Version/7.1.0.346 Mobile Safari/534.11+',
+      selections: 'bb >= 6',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36',
+      selections: 'chrome >= 40',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2769.0 Mobile Safari/537.36',
+      selections: 'and_chr >= 53',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246',
+      selections: 'edge >= 12',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.1',
+      selections: 'firefox >= 40',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (Android 4.4; Mobile; rv:41.0) Gecko/41.0 Firefox/49.0',
+      selections: 'and_ff >= 49',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (Windows; U; MSIE 9.0; WIndows NT 9.0; en-US))',
+      selections: 'ie >= 10',
+      expected: false
+    },
+    {
+      userAgent: 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)',
+      selections: 'ie >= 10',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (compatible; MSIE 10.0; Windows Phone 8.0; Trident/6.0; IEMobile/10.0; ARM; Touch; HTC; Windows Phone 8X by HTC)',
+      selections: 'ie_mob >= 10',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/8.0 Mobile/11A465 Safari/9537.53',
+      selections: 'ios_saf >= 8.1',
+      expected: false
+    },
+    {
+      userAgent: 'Mozilla/5.0 (iPad; CPU OS 8_1 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) GSA/8.0.57838 Mobile/12B410 Safari/600.1.4',
+      selections: 'ios_saf >= 8.1',
+      expected: true
+    },
+    {
+      userAgent: 'Opera/9.80 (X11; Linux i686; Ubuntu/14.10) Presto/2.12.388 Version/12.16',
+      selections: 'opera >= 9',
+      expected: true
+    },
+    {
+      userAgent: 'Opera/12.02 (Android 4.1; Linux; Opera Mobi/ADR-1111101157; U; en-US) Presto/2.9.201 Version/12.02',
+      selections: 'op_mob >= 12',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/7046A194A',
+      selections: 'safari >= 7',
+      expected: true
+    },
+    {
+      userAgent: 'Mozilla/5.0 (Linux; Android 6.0.1; SAMSUNG SM-G920F Build/MMB29K) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/4.0 Chrome/44.0.2403.133 Mobile Safari/537.36',
+      selections: 'samsung >= 4',
+      expected: true
+    },
+    {
+      userAgent: 'Googlebot/2.1 (+http://www.google.com/bot.html)',
+      expected: false
+    }
+  ];
+
+  tests.forEach(function (test) {
+    var description =
+      JSON.stringify(test.userAgent) +
+      (test.expected ? ' matches with ' : ' does not match with ') +
+      JSON.stringify(test.selections);
+
+    it(description, function () {
+      var actual = isBrowserSupported(test.userAgent, test.selections);
+      assert.equal(test.expected, actual);
+    });
+  });
+});