diff --git a/docs/index.bs b/docs/index.bs
index 468c5cc9..097f0469 100644
--- a/docs/index.bs
+++ b/docs/index.bs
@@ -1569,7 +1569,7 @@ spec: urlpattern; urlPrefix: https://wicg.github.io/urlpattern/
     <pre class="idl">
       [Exposed=ServiceWorker]
       interface InstallEvent : ExtendableEvent {
-        Promise&lt;undefined&gt; registerRouter((RouterRule or sequence&lt;RouterRule&gt;) rules);
+        Promise&lt;undefined&gt; addRoutes((RouterRule or sequence&lt;RouterRule&gt;) rules);
       };
 
       dictionary RouterRule {
@@ -1578,24 +1578,24 @@ spec: urlpattern; urlPrefix: https://wicg.github.io/urlpattern/
       };
 
       dictionary RouterCondition {
-        USVString urlPattern;
+        URLPatternCompatible urlPattern;
       };
 
-      enum RouterSourceEnum { "network" };
+      enum RouterSource { "network" };
     </pre>
 
     Each {{RouterCondition/urlPattern}} object has an associated <dfn>URLPattern</dfn>, a {{URLPattern}}, which is initially unset.
 
     <section>
-      <h4 id="register-router-method">{{InstallEvent/registerRouter(rules)|event.registerRouter(rules)}}</h4>
+      <h4 id="register-router-method">{{InstallEvent/addRoutes(rules)|event.addRoutes(rules)}}</h4>
 
-      {{InstallEvent/registerRouter(rules)}} registers this service worker the rules to offload simple tasks that the fetch handler does.
+      {{InstallEvent/addRoutes(rules)}} registers this service worker the rules to offload simple tasks that the fetch handler does.
 
-      <dfn method for="InstallEvent"><code>registerRouter(|rules|)</code></dfn> method *must* run these steps:
+      <dfn method for="InstallEvent"><code>addRoutes(|rules|)</code></dfn> method *must* run these steps:
 
         1. Let |routerRules| be a list of {{RouterRule}} dictionaries.
         1. If |rules| is a {{RouterRule}} dictionary, set |rules| to &#x00AB; |rules| &#x00BB;.
-        1.  for each |rule| in |rules|:
+        1.  For each |rule| of |rules|:
             1. If running [=VerifyRouterRule=] algorithm with |rule| and [=/service worker=] returns false, <a>throw</a> a <code>TypeError</code>.
             1. Append |rule| to |routerRules|.
         1. Set [=/service worker=]'s [=static router rules object=] to |routerRules|.
@@ -3244,52 +3244,13 @@ spec: urlpattern; urlPrefix: https://wicg.github.io/urlpattern/
       : Output
       :: a boolean
 
-      1. If |rule|["{{RouterRule/condition}}"]["{{RouterCondition/urlPattern}}"] is the empty string, return false.
       1. Let |rawPattern| be |rule|["{{RouterRule/condition}}"]["{{RouterCondition/urlPattern}}"].
-      1. If |rawPattern| is a [=string=], then:
-        1. Let |baseURL| be |serviceWorker|'s [=service worker/script url=].
-        1. Set |pattern| to the result of constructing a {{URLPattern}} using the {{URLPattern/URLPattern(input, baseURL)}} constructor steps given |rawPattern| and |baseURL|. If those steps throw, catch the exception and return false.
-      1. Otherwise, if |rawPattern| is {{URLPatternInit}}:
-        1. Set |pattern| to the result of constructing a {{URLPattern}} using the {{URLPattern/URLPattern(input)}} constructor steps given |rawPattern|. If those steps throw, catch the exception and return false.
-      1. Otherwise, return false.
-      1. If running the [=VerifyURLPattern=] algorithm with |pattern| returns false, return false.
-      1. Set |rule|["{{RouterRule/condition}}"]["{{RouterCondition/urlPattern}}"]'s associated {{URLPattern}} to |pattern|.
-      1. Return true.
-  </section>
-
-  <section algorithm>
-    <h3 id="verify-urlpattern-algorithm"><dfn>VerifyURLPattern</dfn></h3>
-
-    : Input
-    :: |pattern|, a {{URLPattern}}
-    : Output
-    :: a boolean
-
-    1. If running the [=VerifyURLPatternComponent=] algorithm with |pattern|'s [=urlpattern/protocol component=] returns false, return false.
-    1. If running the [=VerifyURLPatternComponent=] algorithm with |pattern|'s [=urlpattern/username component=] returns false, return false.
-    1. If running the [=VerifyURLPatternComponent=] algorithm with |pattern|'s [=urlpattern/password component=] returns false, return false.
-    1. If running the [=VerifyURLPatternComponent=] algorithm with |pattern|'s [=urlpattern/hostname component=] returns false, return false.
-    1. If running the [=VerifyURLPatternComponent=] algorithm with |pattern|'s [=urlpattern/port component=] returns false, return false.
-    1. If running the [=VerifyURLPatternComponent=] algorithm with |pattern|'s [=urlpattern/pathname component=] returns false, return false.
-    1. If running the [=VerifyURLPatternComponent=] algorithm with |pattern|'s [=urlpattern/search component=] returns false, return false.
-    1. If running the [=VerifyURLPatternComponent=] algorithm with |pattern|'s [=urlpattern/hash component=] returns false, return false.
-    1. Return true.
-  </section>
+      1. Let |pattern| be the result of [=building a URLPattern from a Web IDL value=] |rawPattern| given |baseURL| and |serivceWorker|'s [=service worker/global object=]'s [=relevant realm=]. If this throws an exception, catch it and return false.
+      1. If |pattern| [=URLPattern/has regexp groups=] returns true, return false.
 
-  <section algorithm>
-    <h3 id="verify-urlpattern-component-algorithm"><dfn>VerifyURLPatternComponent</dfn></h3>
-
-      : Input
-      :: |component|, a [=component=].
-      : Output
-      :: a boolean
-
-      1. Let |parts| be a result of [=urlpattern/parsing=] |component|'s associated [=urlpattern-component/pattern string=].
-      1. [=list/For each=] |part| of |parts|:
-          1. If |part|'s [=urlpattern-part/type=] is "<code>regexp</code>", return false.
-
-              Note: Since running a user-defined regular expression has a security concern, it is prohibited.
+          Note: Since running a user-defined regular expression has a security concern, it is prohibited.
 
+      1. Set |rule|["{{RouterRule/condition}}"]["{{RouterCondition/urlPattern}}"]'s associated {{URLPattern}} to |pattern|.
       1. Return true.
   </section>