Remove @stardazed/streams

This is a regression on several some features in the fetch API. To bring
these back @stardazed/streams simply needs to be ported to TS and
included in the //js directory.

Towards #2608

js/body.ts

-import * as streams from "@stardazed/streams";
 import * as formData from "./form_data";
 import * as blob from "./blob";
 import * as encoding from "./text_encoding";
 import * as headers from "./headers";
-
 import * as domTypes from "./dom_types";
 
 const { Headers } = headers;
 
 // only namespace imports work for now, plucking out what we need
-const { ReadableStream } = streams;
 const { FormData } = formData;
 const { TextEncoder, TextDecoder } = encoding;
 const Blob = blob.DenoBlob;
 const DenoBlob = blob.DenoBlob;
 
-type ReadableStreamReader = domTypes.ReadableStreamReader;
-
-interface ReadableStreamController {
-  enqueue(chunk: string | ArrayBuffer): void;
-  close(): void;
-}
-
 export type BodySource =
   | domTypes.Blob
   | domTypes.BufferSource
@@ -47,8 +37,6 @@ function validateBodyType(owner: Body, bodySource: BodySource): boolean {
     return true;
   } else if (typeof bodySource === "string") {
     return true;
-  } else if (bodySource instanceof ReadableStream) {
-    return true;
   } else if (bodySource instanceof FormData) {
     return true;
   } else if (!bodySource) {
@@ -59,58 +47,6 @@ function validateBodyType(owner: Body, bodySource: BodySource): boolean {
   );
 }
 
-function concatenate(...arrays: Uint8Array[]): ArrayBuffer {
-  let totalLength = 0;
-  for (const arr of arrays) {
-    totalLength += arr.length;
-  }
-  const result = new Uint8Array(totalLength);
-  let offset = 0;
-  for (const arr of arrays) {
-    result.set(arr, offset);
-    offset += arr.length;
-  }
-  return result.buffer as ArrayBuffer;
-}
-
-function bufferFromStream(stream: ReadableStreamReader): Promise<ArrayBuffer> {
-  return new Promise(
-    (resolve, reject): void => {
-      const parts: Uint8Array[] = [];
-      const encoder = new TextEncoder();
-      // recurse
-      (function pump(): void {
-        stream
-          .read()
-          .then(
-            ({ done, value }): void => {
-              if (done) {
-                return resolve(concatenate(...parts));
-              }
-
-              if (typeof value === "string") {
-                parts.push(encoder.encode(value));
-              } else if (value instanceof ArrayBuffer) {
-                parts.push(new Uint8Array(value));
-              } else if (!value) {
-                // noop for undefined
-              } else {
-                reject("unhandled type on stream read");
-              }
-
-              return pump();
-            }
-          )
-          .catch(
-            (err): void => {
-              reject(err);
-            }
-          );
-      })();
-    }
-  );
-}
-
 function getHeaderValueParams(value: string): Map<string, string> {
   const params = new Map();
   // Forced to do so for some Map constructor param mismatch
@@ -145,17 +81,8 @@ export class Body implements domTypes.Body {
     if (this._stream) {
       return this._stream;
     }
-    if (this._bodySource instanceof ReadableStream) {
-      // @ts-ignore
-      this._stream = this._bodySource;
-    }
     if (typeof this._bodySource === "string") {
-      this._stream = new ReadableStream({
-        start(controller: ReadableStreamController): void {
-          controller.enqueue(this._bodySource);
-          controller.close();
-        }
-      });
+      throw Error("not implemented");
     }
     return this._stream;
   }
@@ -332,9 +259,6 @@ export class Body implements domTypes.Body {
     } else if (typeof this._bodySource === "string") {
       const enc = new TextEncoder();
       return enc.encode(this._bodySource).buffer as ArrayBuffer;
-    } else if (this._bodySource instanceof ReadableStream) {
-      // @ts-ignore
-      return bufferFromStream(this._bodySource.getReader());
     } else if (this._bodySource instanceof FormData) {
       const enc = new TextEncoder();
       return enc.encode(this._bodySource.toString()).buffer as ArrayBuffer;

js/request.ts

 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 import * as headers from "./headers";
 import * as body from "./body";
-
-import * as streams from "@stardazed/streams";
-
 import * as domTypes from "./dom_types";
 
 const { Headers } = headers;
-const { ReadableStream } = streams;
 
 function byteUpperCase(s: string): string {
   return String(s).replace(/[a-z]/g, function byteUpperCaseReplace(c): string {
@@ -144,11 +140,6 @@ export class Request extends body.Body implements domTypes.Request {
 
     let body2 = this._bodySource;
 
-    if (this._bodySource instanceof ReadableStream) {
-      const tees = (this._bodySource as domTypes.ReadableStream).tee();
-      this._stream = this._bodySource = tees[0];
-      body2 = tees[1];
-    }
     const cloned = new Request(this.url, {
       body: body2,
       method: this.method,

js/request_test.ts

 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
-import { test, assertEquals, assert } from "./test_util.ts";
+import { test, assertEquals } from "./test_util.ts";
 
 test(function fromInit(): void {
   const req = new Request("https://example.com", {
@@ -15,35 +15,3 @@ test(function fromInit(): void {
   assertEquals(req.url, "https://example.com");
   assertEquals(req.headers.get("test-header"), "value");
 });
-
-test(function fromRequest(): void {
-  const r = new Request("https://example.com");
-  // @ts-ignore
-  r._bodySource = "ahoyhoy";
-  r.headers.set("test-header", "value");
-
-  const req = new Request(r);
-
-  // @ts-ignore
-  assertEquals(req._bodySource, r._bodySource);
-  assertEquals(req.url, r.url);
-  assertEquals(req.headers.get("test-header"), r.headers.get("test-header"));
-});
-
-test(async function cloneRequestBodyStream(): Promise<void> {
-  // hack to get a stream
-  const stream = new Request("", { body: "a test body" }).body;
-  const r1 = new Request("https://example.com", {
-    body: stream
-  });
-
-  const r2 = r1.clone();
-
-  const b1 = await r1.text();
-  const b2 = await r2.text();
-
-  assertEquals(b1, b2);
-
-  // @ts-ignore
-  assert(r1._bodySource !== r2._bodySource);
-});

package.json

 {
   "name": "deno",
   "devDependencies": {
-    "@stardazed/streams": "3.0.0",
     "@types/prettier": "1.16.1",
     "@typescript-eslint/eslint-plugin": "1.6.0",
     "@typescript-eslint/parser": "1.6.0",

third_party @ 47a8f150

-Subproject commit f034aeb0b9a5ba6503cad1186df7e2eae402b352
+Subproject commit 47a8f150bcbe3b78f174ae79dcc07a12adb0d5b5