warn about outdated versions of Bootstrap

src/bootlint.js

@@ -34,6 +34,7 @@ var LocationIndex = _location.LocationIndex;
     var NUM2SCREEN = ['xs', 'sm', 'md', 'lg'];
     var IN_NODE_JS = !!(cheerio.load);
     var MIN_JQUERY_VERSION = '1.9.1';// as of Bootstrap v3.3.0
+    var CURRENT_BOOTSTRAP_VERSION = '3.3.1';
 
     function compareNums(a, b) {
         return a - b;
@@ -43,6 +44,13 @@ var LocationIndex = _location.LocationIndex;
         return node.type === 'directive' && node.name === '!doctype';
     }
 
+    var tagNameOf = IN_NODE_JS ? function (element) {
+        return element.name.toUpperCase();
+    } : function (element) {
+        /* @covignore */
+        return element.tagName.toUpperCase();
+    };
+
     function filenameFromUrl(url) {
         var filename = url.replace(/[#?].*$/, ''); // strip querystring & fragment ID
         var lastSlash = filename.lastIndexOf('/');
@@ -780,6 +788,82 @@ var LocationIndex = _location.LocationIndex;
             reporter('Using `.pull-left` or `.pull-right` as part of the media object component is deprecated as of Bootstrap v3.3.0. Use `.media-left` or `.media-right` instead.', mediaPulls);
         }
     });
+    addLinter("W013", function lintOutdatedBootstrap($, reporter) {
+        var OUTDATED_BOOTSTRAP = "Bootstrap version might be outdated. Latest version is at least " + CURRENT_BOOTSTRAP_VERSION + " ; saw what appears to be usage of Bootstrap ";
+        var PLUGINS = [
+            'affix',
+            'alert',
+            'button',
+            'carousel',
+            'collapse',
+            'dropdown',
+            'modal',
+            'popover',
+            'scrollspy',
+            'tab',
+            'tooltip'
+        ];
+        var theWindow = null;
+        try {
+            /*eslint-disable no-undef, block-scoped-var */
+            theWindow = window;// jshint ignore:line
+            /*eslint-enable no-undef, block-scoped-var */
+        }
+        catch (e) {
+            // deliberately do nothing
+        }
+        var globaljQuery = theWindow && (theWindow.$ || theWindow.jQuery);
+        /* @covignore */
+        if (globaljQuery) {
+            var versions = PLUGINS.map(function (pluginName) {
+                var plugin = globaljQuery.fn[pluginName];
+                if (!plugin) {
+                    return undefined;
+                }
+                var constructor = plugin.Constructor;
+                if (!constructor) {
+                    return undefined;
+                }
+                return constructor.VERSION;
+            }).filter(function (version) {
+                return version !== undefined;
+            }).sort(semver.compare);
+            if (versions.length) {
+                var minVersion = versions[0];
+                reporter(OUTDATED_BOOTSTRAP + minVersion);
+                return;
+            }
+        }
+        // check for Bootstrap <link>s and <script>s
+        var bootstraps = $([
+            'link[rel="stylesheet"][href$="/bootstrap.css"]',
+            'link[rel="stylesheet"][href="bootstrap.css"]',
+            'link[rel="stylesheet"][href$="/bootstrap.min.css"]',
+            'link[rel="stylesheet"][href="bootstrap.min.css"]',
+            'script[src$="/bootstrap.js"]',
+            'script[src="bootstrap.js"]',
+            'script[src$="/bootstrap.min.js"]',
+            'script[src="bootstrap.min.js"]'
+        ].join(','));
+        bootstraps.each(function () {
+            var elem = $(this);
+            var urlAttr = (tagNameOf(this) === 'LINK') ? 'href' : 'src';
+            var pathSegments = parseUrl(elem.attr(urlAttr)).pathname.split('/');
+            var matches = pathSegments.map(function (segment) {
+                var match = segment.match(/^\d+\.\d+\.\d+$/);
+                return match ? match[0] : null;
+            }).filter(function (match) {
+                return match !== null;
+            });
+            if (!matches.length) {
+                return;
+            }
+            var version = matches[matches.length - 1];
+            if (semver.lt(version, CURRENT_BOOTSTRAP_VERSION, true)) {
+                reporter(OUTDATED_BOOTSTRAP + version, elem);
+            }
+        });
+    });
 
     exports._lint = function ($, reporter, disabledIdList, html) {
         var locationIndex = IN_NODE_JS ? new LocationIndex(html) : null;

test/bootlint_test.js

@@ -611,5 +611,25 @@ exports.bootlint = {
             'should not complain about .media-left or .media-right classes'
         );
         test.done();
+    },
+
+    'outdated version of Bootstrap': function (test) {
+        test.expect(5);
+        test.deepEqual(lintHtml(utf8Fixture('outdated/bootstrap-css.html')),
+            ['Bootstrap version might be outdated. Latest version is at least 3.3.1 ; saw what appears to be usage of Bootstrap 3.2.0'],
+            'should complain about outdated bootstrap.css.');
+        test.deepEqual(lintHtml(utf8Fixture('outdated/bootstrap-min-css.html')),
+            ['Bootstrap version might be outdated. Latest version is at least 3.3.1 ; saw what appears to be usage of Bootstrap 3.2.0'],
+            'should complain about outdated bootstrap.min.css.');
+        test.deepEqual(lintHtml(utf8Fixture('outdated/bootstrap-js.html')),
+            ['Bootstrap version might be outdated. Latest version is at least 3.3.1 ; saw what appears to be usage of Bootstrap 3.2.0'],
+            'should complain about outdated bootstrap.js.');
+        test.deepEqual(lintHtml(utf8Fixture('outdated/bootstrap-min-js.html')),
+            ['Bootstrap version might be outdated. Latest version is at least 3.3.1 ; saw what appears to be usage of Bootstrap 3.2.0'],
+            'should complain about outdated bootstrap.min.js.');
+        test.deepEqual(lintHtml(utf8Fixture('outdated/bootstrap-extensions-okay.html')),
+            [],
+            'should not complain about outdated libraries that just have "bootstrap" in their name.');
+        test.done();
     }
 };

test/fixtures/outdated/bootstrap-css.html

@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <title>Test</title>
+        <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.css">
+        <!--[if lt IE 9]>
+            <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
+            <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+        <![endif]-->
+        <script src="../../lib/jquery.min.js"></script>
+
+        <link rel="stylesheet" href="../../lib/qunit.css">
+        <script src="../../lib/qunit.js"></script>
+        <script src="../../../dist/browser/bootlint.js"></script>
+        <script src="../generic-qunit.js"></script>
+    </head>
+    <body>
+        <div id="qunit"></div>
+        <ol id="bootlint">
+            <li data-lint="Bootstrap version might be outdated. Latest version is at least 3.3.1 ; saw what appears to be usage of Bootstrap 3.2.0"></li>
+        </ol>
+    </body>
+</html>

test/fixtures/outdated/bootstrap-extensions-okay.html

@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <title>Test</title>
+        <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.css">
+        <link rel="stylesheet" href="other-library/1.0.0/plugin-for-bootstrap.css">
+        <link rel="stylesheet" href="other-library/1.0.0/plugin-for-bootstrap.min.css">
+        <script src="other-library/1.0.0/plugin-for-bootstrap.css"></script>
+        <script src="other-library/1.0.0/plugin-for-bootstrap.min.css"></script>
+        <!--[if lt IE 9]>
+            <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
+            <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+        <![endif]-->
+        <script src="../../lib/jquery.min.js"></script>
+
+        <link rel="stylesheet" href="../../lib/qunit.css">
+        <script src="../../lib/qunit.js"></script>
+        <script src="../../../dist/browser/bootlint.js"></script>
+        <script src="../generic-qunit.js"></script>
+    </head>
+    <body>
+        <div id="qunit"></div>
+        <ol id="bootlint"></ol>
+    </body>
+</html>

test/fixtures/outdated/bootstrap-js.html

@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <title>Test</title>
+        <!--[if lt IE 9]>
+            <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
+            <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+        <![endif]-->
+        <script src="../../lib/jquery.min.js"></script>
+        <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.js"></script>
+
+        <link rel="stylesheet" href="../../lib/qunit.css">
+        <script src="../../lib/qunit.js"></script>
+        <script src="../../../dist/browser/bootlint.js"></script>
+        <script src="../generic-qunit.js"></script>
+    </head>
+    <body>
+        <div id="qunit"></div>
+        <ol id="bootlint">
+            <li data-lint="Bootstrap version might be outdated. Latest version is at least 3.3.1 ; saw what appears to be usage of Bootstrap 3.2.0"></li>
+        </ol>
+    </body>
+</html>

test/fixtures/outdated/bootstrap-min-css.html

@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <title>Test</title>
+        <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
+        <!--[if lt IE 9]>
+            <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
+            <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+        <![endif]-->
+        <script src="../../lib/jquery.min.js"></script>
+
+        <link rel="stylesheet" href="../../lib/qunit.css">
+        <script src="../../lib/qunit.js"></script>
+        <script src="../../../dist/browser/bootlint.js"></script>
+        <script src="../generic-qunit.js"></script>
+    </head>
+    <body>
+        <div id="qunit"></div>
+        <ol id="bootlint">
+            <li data-lint="Bootstrap version might be outdated. Latest version is at least 3.3.1 ; saw what appears to be usage of Bootstrap 3.2.0"></li>
+        </ol>
+    </body>
+</html>

test/fixtures/outdated/bootstrap-min-js.html

@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <title>Test</title>
+        <!--[if lt IE 9]>
+            <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
+            <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+        <![endif]-->
+        <script src="../../lib/jquery.min.js"></script>
+        <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
+
+        <link rel="stylesheet" href="../../lib/qunit.css">
+        <script src="../../lib/qunit.js"></script>
+        <script src="../../../dist/browser/bootlint.js"></script>
+        <script src="../generic-qunit.js"></script>
+    </head>
+    <body>
+        <div id="qunit"></div>
+        <ol id="bootlint">
+            <li data-lint="Bootstrap version might be outdated. Latest version is at least 3.3.1 ; saw what appears to be usage of Bootstrap 3.2.0"></li>
+        </ol>
+    </body>
+</html>