Docs: Document browser support for QUnit 3.0 and QUnit 3.0 (ESM)

* QUnit 2.x and QUnit 3.0 have the same browser support.

* QUnit 3.0 removes support for PhantomJS and raises the Node.js
  requirement.

* The new "ESM" bundle for QUnit 3.0 has a higher browser requirement
  because ESM itself (i.e. `<script type=module>` and the `import`
  keyword) did not exist in browsers before that.

  Since commit ec7d6e7 the new ESM build uses a higher
  Rollup/Babel target that leverages native use of ES6 syntax
  instead of compiling to ES5.

Ref #1808.

Author: Krinkle

README.md

@@ -17,7 +17,7 @@
 
 * [API documentation](https://qunitjs.com/api/)
 * [Guides how-to](https://qunitjs.com/guides/)
-* [Browser support](https://qunitjs.com/browser/#browser-support)
+* [Browser support](https://qunitjs.com/intro/#compatibility)
 * [Browser automation](https://qunitjs.com/browser/#integrations)
 
 ## Support

docs/_data/sitenav.yml

@@ -7,10 +7,10 @@
       href: /intro/#download
     - name: Browser Runner
       href: /browser/
-    - name: Browser Support
-      href: /browser/#browser-support
     - name: Command-line Interface
       href: /cli/
+    - name: Compatibility
+      href: /intro/#compatibility
     - name: Test lifecycle
       href: /lifecycle/
     - name: QUnit 2.0 Upgrade Guide

docs/api/index.md

@@ -10,7 +10,7 @@ redirect_from:
 
 If you're new to QUnit, check out [Getting Started](../intro.md)!
 
-QUnit is a powerful, easy-to-use JavaScript unit test suite. QUnit has no dependencies and supports Node.js, SpiderMonkey, and all [major browsers](../browser.md#browser-support).
+QUnit is a powerful, easy-to-use JavaScript unit test suite. QUnit has no dependencies and supports Node.js, SpiderMonkey, and all [major browsers](../intro.md#compatibility).
 
 <!-- Omit trailing index.md, to aid in-repo directory browsing: -->
 

docs/browser.md

@@ -78,18 +78,7 @@ When building out a larger feature, you can use the [module selector](#module-se
 
 ## Browser support
 
-QUnit currently supports the following browsers:
-
-* Internet Explorer: 9+
-* Edge: 15+ (both legacy MSEdge and Chromium-based)
-* Firefox: 45+
-* Safari: 9+
-* Opera: 36+
-* Chrome: 58+
-* Android: 4.3+
-* iOS: 7+ (Mobile Safari)
-
-For older browsers, such as Internet Explorer 6-8, Opera 12+, or Safari 5+, please use QUnit 1.x, which you can download from the [release archives](https://releases.jquery.com/qunit/).
+_The browser support table was moved to [Compatibility](./intro.md#compatibility)_.
 
 ## Integrations
 

docs/intro.md

@@ -29,6 +29,32 @@ Check these QUnit tutorials and examples, to make the most of your unit tests!
 1. [Reporter API](./api/callbacks/QUnit.on.md#reporter-api): Event emitter, Create your own reporter.
 1. [Theme API](./browser.md#theme-api): Create your own theme.
 
+## Compatibility
+
+QUnit supports the following browsers and runtime environments:
+
+<table>
+<thead>
+<tr><td></td><th>QUnit 1</th><th>QUnit&nbsp;2</th><th>QUnit&nbsp;3</th><th>QUnit 3 (ESM)</th></tr>
+</thead>
+<tbody>
+<tr><th>Internet Explorer</th><td>IE 6-11</td><td colspan=2>IE 9-11</td><td>&mdash;</td></tr>
+<tr><th>Edge</th><td>1+</td><td colspan=2>15+<sup><abbr title="both legacy MSEdge and Chromium-based Edge">[?]</abbr></sup></td><td>16+</td></tr>
+<tr><th>Firefox</th><td>3.6+</td><td colspan=2>45+</td><td>60+</td></tr>
+<tr><th>Safari</th><td>4.0+</td><td colspan=2>9.1+</td><td>10.1+</td></tr>
+<tr><th>Chrome</th><td>1+</td><td colspan=2>58+</td><td>61+</td></tr>
+<tr><th>Chrome Mobile</th><td>&mdash;</td><td colspan=2>49+ (Android 4.4+)</td><td>61+ (Android 7+)</td></tr>
+<tr><th>Opera</th><td>11+</td><td colspan=2>36+</td><td>48+</td></tr>
+<tr><th>Android Browser</th><td>2.3 - 5.0</td><td colspan=2>4.3 - 5.0</td><td>&mdash;</td></tr>
+<tr><th>iOS (Mobile Safari)</th><td>4.0+</td><td colspan=2>7.0+</td><td>10.3+</td></tr>
+<tr><th>PhantomJS</th><td colspan=2>1.x</td><td colspan=2>&mdash;</td></tr>
+<tr><th>Node.js</th><td>&mdash;</td><td>10+</td><td colspan=2>18+</td></tr>
+<tr><th>SpiderMonkey</th><td>&mdash;</td><td colspan=3>68+<sup><abbr title="since QUnit 2.14">[?]</abbr></sup></td></tr>
+</tbody>
+</table>
+
+You can download QUnit 1.x and QUnit 2.x from the [release archives](https://releases.jquery.com/qunit/).
+
 ## Support
 
 To report a bug, request a new feature, or ask a question [open an issue](https://github.com/qunitjs/qunit/issues) on GitHub.