Rename extensions/ directory to ext/ (#11643)

ext/web/11_blob_url.js

@@ -0,0 +1,59 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+
+// @ts-check
+/// <reference no-default-lib="true" />
+/// <reference path="../../core/lib.deno_core.d.ts" />
+/// <reference path="../webidl/internal.d.ts" />
+/// <reference path="../web/internal.d.ts" />
+/// <reference path="../web/lib.deno_web.d.ts" />
+/// <reference path="../url/internal.d.ts" />
+/// <reference path="../url/lib.deno_url.d.ts" />
+/// <reference path="./internal.d.ts" />
+/// <reference lib="esnext" />
+"use strict";
+
+((window) => {
+  const core = Deno.core;
+  const webidl = window.__bootstrap.webidl;
+  const { getParts } = window.__bootstrap.file;
+  const { URL } = window.__bootstrap.url;
+
+  /**
+   * @param {Blob} blob
+   * @returns {string}
+   */
+  function createObjectURL(blob) {
+    const prefix = "Failed to execute 'createObjectURL' on 'URL'";
+    webidl.requiredArguments(arguments.length, 1, { prefix });
+    blob = webidl.converters["Blob"](blob, {
+      context: "Argument 1",
+      prefix,
+    });
+
+    const url = core.opSync(
+      "op_blob_create_object_url",
+      blob.type,
+      getParts(blob),
+    );
+
+    return url;
+  }
+
+  /**
+   * @param {string} url
+   * @returns {void}
+   */
+  function revokeObjectURL(url) {
+    const prefix = "Failed to execute 'revokeObjectURL' on 'URL'";
+    webidl.requiredArguments(arguments.length, 1, { prefix });
+    url = webidl.converters["DOMString"](url, {
+      context: "Argument 1",
+      prefix,
+    });
+
+    core.opSync("op_blob_revoke_object_url", url);
+  }
+
+  URL.createObjectURL = createObjectURL;
+  URL.revokeObjectURL = revokeObjectURL;
+})(globalThis);