fix: request body.body regression

Refs: #928 (comment)

lib/api/readable.js

@@ -6,6 +6,7 @@ const assert = require('assert')
 const { Readable } = require('stream')
 const { RequestAbortedError, NotSupportedError } = require('../core/errors')
 const util = require('../core/util')
+const { toWebReadable } = require('../fetch/util')
 
 let Blob
 
@@ -130,7 +131,7 @@ module.exports = class BodyReadable extends Readable {
   // https://fetch.spec.whatwg.org/#dom-body-body
   get body () {
     if (!this[kBody]) {
-      this[kBody] = util.toWeb(this)
+      this[kBody] = toWebReadable(this)
       if (this[kConsume]) {
         // TODO: Is this the best way to force a lock?
         this[kBody].getReader() // Ensure stream is locked.

test/client-request.js

@@ -275,3 +275,29 @@ test('request arrayBuffer', (t) => {
     t.strictSame(Buffer.from(JSON.stringify(obj)), Buffer.from(await body.arrayBuffer()))
   })
 })
+
+test('request body', (t) => {
+  t.plan(1)
+
+  const obj = { asd: true }
+  const server = createServer((req, res) => {
+    res.end(JSON.stringify(obj))
+  })
+  t.teardown(server.close.bind(server))
+
+  server.listen(0, async () => {
+    const client = new Client(`http://localhost:${server.address().port}`)
+    t.teardown(client.destroy.bind(client))
+
+    const { body } = await client.request({
+      path: '/',
+      method: 'GET'
+    })
+
+    let x = ''
+    for await (const chunk of body.body) {
+      x += chunk
+    }
+    t.strictSame(JSON.stringify(obj), x)
+  })
+})