update spec & wpts

lib/core/util.js

@@ -365,6 +365,7 @@ async function * convertIterableToBuffer (iterable) {
   }
 }
 
+/** @type {globalThis['ReadableStream']} */
 let ReadableStream
 function ReadableStreamFrom (iterable) {
   if (!ReadableStream) {
@@ -395,9 +396,9 @@ function ReadableStreamFrom (iterable) {
       },
       async cancel (reason) {
         await iterator.return()
-      }
-    },
-    0
+      },
+      type: 'bytes'
+    }
   )
 }
 

lib/fetch/body.js

@@ -47,7 +47,7 @@ function extractBody (object, keepalive = false) {
     stream = object.stream()
   } else {
     // 4. Otherwise, set stream to a new ReadableStream object, and set
-    //    up stream.
+    //    up stream with byte reading support.
     stream = new ReadableStream({
       async pull (controller) {
         controller.enqueue(
@@ -56,7 +56,7 @@ function extractBody (object, keepalive = false) {
         queueMicrotask(() => readableStreamClose(controller))
       },
       start () {},
-      type: undefined
+      type: 'bytes'
     })
   }
 
@@ -237,7 +237,7 @@ function extractBody (object, keepalive = false) {
       async cancel (reason) {
         await iterator.return()
       },
-      type: undefined
+      type: 'bytes'
     })
   }
 

lib/fetch/dataURL.js

@@ -126,7 +126,13 @@ function URLSerializer (url, excludeFragment = false) {
   const href = url.href
   const hashLength = url.hash.length
 
-  return hashLength === 0 ? href : href.substring(0, href.length - hashLength)
+  const serialized = hashLength === 0 ? href : href.substring(0, href.length - hashLength)
+
+  if (!hashLength && href.endsWith('#')) {
+    return serialized.slice(0, -1)
+  }
+
+  return serialized
 }
 
 // https://infra.spec.whatwg.org/#collect-a-sequence-of-code-points