feat: blob URL support (#10045)

This commit adds blob URL support. Blob URLs are stored in a process
global storage, that can be accessed from all workers, and the module
loader. Blob URLs can be created using `URL.createObjectURL` and revoked
using `URL.revokeObjectURL`.

This commit does not add support for `fetch`ing blob URLs. This will be
added in a follow up commit.

1 files changed, 63 insertions, 0 deletions

diff --git a/op_crates/file/03_blob_url.js b/op_crates/file/03_blob_url.js
new file mode 100644
index 000000000..29019cd84
--- /dev/null
+++ b/op_crates/file/03_blob_url.js
@@ -0,0 +1,63 @@
+// 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 path="./lib.deno_file.d.ts" />
+/// <reference lib="esnext" />
+"use strict";
+
+((window) => {
+  const core = Deno.core;
+  // const webidl = window.__bootstrap.webidl;
+  const { _byteSequence } = 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.jsonOpSync(
+      "op_file_create_object_url",
+      blob.type,
+      blob[_byteSequence],
+    );
+
+    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.jsonOpSync(
+      "op_file_revoke_object_url",
+      url,
+    );
+  }
+
+  URL.createObjectURL = createObjectURL;
+  URL.revokeObjectURL = revokeObjectURL;
+})(globalThis);