refactor: remove remaining references to "flash" server (#18580)

Follow up to https://github.com/denoland/deno/pull/18578

We will need to do another pass cleaning up `ext/fetch/23_request.js`

3 files changed, 15 insertions, 118 deletions

diff --git a/ext/fetch/23_request.js b/ext/fetch/23_request.js
index ea2128c72..b0dd715d1 100644
--- a/ext/fetch/23_request.js
+++ b/ext/fetch/23_request.js
@@ -16,7 +16,7 @@ import {
   HTTP_TOKEN_CODE_POINT_RE,
 } from "ext:deno_web/00_infra.js";
 import { URL } from "ext:deno_url/00_url.js";
-import { extractBody, InnerBody, mixinBody } from "ext:deno_fetch/22_body.js";
+import { extractBody, mixinBody } from "ext:deno_fetch/22_body.js";
 import { getLocationHref } from "ext:deno_web/12_location.js";
 import { extractMimeType } from "ext:deno_web/01_mimesniff.js";
 import { blobFromObjectUrl } from "ext:deno_web/09_file.js";
@@ -49,7 +49,6 @@ const _headersCache = Symbol("headers cache");
 const _signal = Symbol("signal");
 const _mimeType = Symbol("mime type");
 const _body = Symbol("body");
-const _flash = Symbol("flash");
 const _url = Symbol("url");
 const _method = Symbol("method");
 
@@ -82,7 +81,7 @@ function processUrlList(urlList, urlListProcessed) {
  */
 
 /**
- * @param {() => string} method
+ * @param {string} method
  * @param {string | () => string} url
  * @param {() => [string, string][]} headerList
  * @param {typeof __window.bootstrap.fetchBody.InnerBody} body
@@ -95,15 +94,8 @@ function newInnerRequest(method, url, headerList, body, maybeBlob) {
     blobUrlEntry = blobFromObjectUrl(url);
   }
   return {
-    methodInner: null,
+    methodInner: method,
     get method() {
-      if (this.methodInner === null) {
-        try {
-          this.methodInner = method();
-        } catch {
-          throw new TypeError("cannot read method: request closed");
-        }
-      }
       return this.methodInner;
     },
     set method(value) {
@@ -158,10 +150,9 @@ function newInnerRequest(method, url, headerList, body, maybeBlob) {
  * https://fetch.spec.whatwg.org/#concept-request-clone
  * @param {InnerRequest} request
  * @param {boolean} skipBody
- * @param {boolean} flash
  * @returns {InnerRequest}
  */
-function cloneInnerRequest(request, skipBody = false, flash = false) {
+function cloneInnerRequest(request, skipBody = false) {
   const headerList = ArrayPrototypeMap(
     request.headerList,
     (x) => [x[0], x[1]],
@@ -172,19 +163,6 @@ function cloneInnerRequest(request, skipBody = false, flash = false) {
     body = request.body.clone();
   }
 
-  if (flash) {
-    return {
-      body,
-      methodCb: request.methodCb,
-      urlCb: request.urlCb,
-      headerList: request.headerList,
-      streamRid: request.streamRid,
-      serverId: request.serverId,
-      redirectMode: "follow",
-      redirectCount: 0,
-    };
-  }
-
   return {
     method: request.method,
     headerList,
@@ -285,11 +263,7 @@ class Request {
     return extractMimeType(values);
   }
   get [_body]() {
-    if (this[_flash]) {
-      return this[_flash].body;
-    } else {
-      return this[_request].body;
-    }
+    return this[_request].body;
   }
 
   /**
@@ -322,7 +296,7 @@ class Request {
     if (typeof input === "string") {
       const parsedURL = new URL(input, baseURL);
       request = newInnerRequest(
-        () => "GET",
+        "GET",
         parsedURL.href,
         () => [],
         null,
@@ -455,13 +429,8 @@ class Request {
     if (this[_method]) {
       return this[_method];
     }
-    if (this[_flash]) {
-      this[_method] = this[_flash].methodCb();
-      return this[_method];
-    } else {
-      this[_method] = this[_request].method;
-      return this[_method];
-    }
+    this[_method] = this[_request].method;
+    return this[_method];
   }
 
   get url() {
@@ -470,13 +439,8 @@ class Request {
       return this[_url];
     }
 
-    if (this[_flash]) {
-      this[_url] = this[_flash].urlCb();
-      return this[_url];
-    } else {
-      this[_url] = this[_request].url();
-      return this[_url];
-    }
+    this[_url] = this[_request].url();
+    return this[_url];
   }
 
   get headers() {
@@ -486,9 +450,6 @@ class Request {
 
   get redirect() {
     webidl.assertBranded(this, RequestPrototype);
-    if (this[_flash]) {
-      return this[_flash].redirectMode;
-    }
     return this[_request].redirectMode;
   }
 
@@ -502,32 +463,17 @@ class Request {
     if (this[_body] && this[_body].unusable()) {
       throw new TypeError("Body is unusable.");
     }
-    let newReq;
-    if (this[_flash]) {
-      newReq = cloneInnerRequest(this[_flash], false, true);
-    } else {
-      newReq = cloneInnerRequest(this[_request]);
-    }
+    const newReq = cloneInnerRequest(this[_request]);
     const newSignal = abortSignal.newSignal();
 
     if (this[_signal]) {
       abortSignal.follow(newSignal, this[_signal]);
     }
 
-    if (this[_flash]) {
-      return fromInnerRequest(
-        newReq,
-        newSignal,
-        guardFromHeaders(this[_headers]),
-        true,
-      );
-    }
-
     return fromInnerRequest(
       newReq,
       newSignal,
       guardFromHeaders(this[_headers]),
-      false,
     );
   }
 
@@ -606,58 +552,17 @@ function toInnerRequest(request) {
  * @param {InnerRequest} inner
  * @param {AbortSignal} signal
  * @param {"request" | "immutable" | "request-no-cors" | "response" | "none"} guard
- * @param {boolean} flash
  * @returns {Request}
  */
-function fromInnerRequest(inner, signal, guard, flash) {
+function fromInnerRequest(inner, signal, guard) {
   const request = webidl.createBranded(Request);
-  if (flash) {
-    request[_flash] = inner;
-  } else {
-    request[_request] = inner;
-  }
+  request[_request] = inner;
   request[_signal] = signal;
-  request[_getHeaders] = flash
-    ? () => headersFromHeaderList(inner.headerList(), guard)
-    : () => headersFromHeaderList(inner.headerList, guard);
-  return request;
-}
-
-/**
- * @param {number} serverId
- * @param {number} streamRid
- * @param {ReadableStream} body
- * @param {() => string} methodCb
- * @param {() => string} urlCb
- * @param {() => [string, string][]} headersCb
- * @returns {Request}
- */
-function fromFlashRequest(
-  serverId,
-  streamRid,
-  body,
-  methodCb,
-  urlCb,
-  headersCb,
-) {
-  const request = webidl.createBranded(Request);
-  request[_flash] = {
-    body: body !== null ? new InnerBody(body) : null,
-    methodCb,
-    urlCb,
-    headerList: headersCb,
-    streamRid,
-    serverId,
-    redirectMode: "follow",
-    redirectCount: 0,
-  };
-  request[_getHeaders] = () => headersFromHeaderList(headersCb(), "request");
+  request[_getHeaders] = () => headersFromHeaderList(inner.headerList, guard);
   return request;
 }
 
 export {
-  _flash,
-  fromFlashRequest,
   fromInnerRequest,
   newInnerRequest,
   processUrlList,
diff --git a/ext/fetch/internal.d.ts b/ext/fetch/internal.d.ts
index 65ce31ad9..aec5322bb 100644
--- a/ext/fetch/internal.d.ts
+++ b/ext/fetch/internal.d.ts
@@ -78,7 +78,6 @@ declare module "ext:deno_fetch/26_fetch.js" {
       | "response"
       | "none",
     skipBody: boolean,
-    flash: boolean,
   ): Request;
   function redirectStatus(status: number): boolean;
   function nullBodyStatus(status: number): boolean;
diff --git a/ext/http/01_http.js b/ext/http/01_http.js
index ab0d6626a..f434acd3c 100644
--- a/ext/http/01_http.js
+++ b/ext/http/01_http.js
@@ -14,7 +14,6 @@ import {
   toInnerResponse,
 } from "ext:deno_fetch/23_response.js";
 import {
-  _flash,
   fromInnerRequest,
   newInnerRequest,
   toInnerRequest,
@@ -134,7 +133,7 @@ class HttpConn {
     }
 
     const innerRequest = newInnerRequest(
-      () => method,
+      method,
       url,
       () => ops.op_http_headers(streamRid),
       body !== null ? new InnerBody(body) : null,
@@ -467,12 +466,6 @@ function upgradeWebSocket(request, options = {}) {
 }
 
 function upgradeHttp(req) {
-  if (req[_flash]) {
-    throw new TypeError(
-      "Flash requests can not be upgraded with `upgradeHttp`. Use `upgradeHttpRaw` instead.",
-    );
-  }
-
   req[_deferred] = new Deferred();
   return req[_deferred].promise;
 }