Introduce <script type=webbundle>

Introduce <script>-based API for subresource loading with Web Bundles. See the design doc [1] for the motivation of switching from <link>-based API to <script>-based API. The explainer [2] was already updated to use <script>-based API. This feature is guarded by `SubresourceWebBundles` flag. We eventually drop the <link rel=webbundle> support and remove the <link>-based API code once we can confirm <script>-based API can be used as a replacement of <link>-based API. This CL should be considered as the first step to switch to <script>-based API. There are still gaps between <link>-based API and <script>-based API, which will be addressed later [3]. This CL intentionally adds a very minimum test for <script>-based API because there are already WPT tests for <script type=webbundle>. They all have been marked as [ SKIP ] in TestExpectations until now. Now some of them are passing after this CL. We'll make the remaining tests pass in follow-up CLs, and also add tests which are specific to <script>-based API as necessary. These efforts should be tracked by crbug.com/1245166. [1]: https://docs.google.com/document/d/1q_SodTcLuwya4cXt1gIRaVrkiaBfwWyPvkY1fqRKkgM/edit?usp=sharing&resourcekey=0-dqrFOGVCYsg8WRZ4RFgwuw [2]: https://github.com/WICG/webpackage/blob/main/explainers/subresource-loading.md [3]: WICG/webpackage#670 Bug: 1245166 Change-Id: I5109b6e692baf10fd1d8a31a31d93176d4dc4ad2
web-platform-tests · Oct 7, 2021 · 3a7887d · 3a7887d
1 parent 8ffd71a
commit 3a7887d
Showing 1 changed file with 15 additions and 0 deletions.
diff --git a/web-bundle/subresource-loading/script-supports-webbundle.https.tentative.html b/web-bundle/subresource-loading/script-supports-webbundle.https.tentative.html
@@ -0,0 +1,15 @@
+<DOCTYPE html>
+<html>
+<title>HTMLScriptElement.supports webbundle</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+test(() => {
+  assert_true(HTMLScriptElement.supports('webbundle'));
+}, 'HTMLScriptElement.supports returns true for \'webbundle\'');
+
+test(() => {
+  assert_false(HTMLScriptElement.supports(' webbundle'));
+  assert_false(HTMLScriptElement.supports('webbundle '));
+}, 'HTMLScriptElement.supports returns false for unsupported types');
+</script>