Add todo notes

Author: jasnell

src/node_blob.cc

@@ -37,6 +37,56 @@ using v8::Value;
 
 namespace {
 
+// TODO(@flakey5, @jasnell): Update the JavaScript side of blob...
+//
+// Within the JavaScript Blob object, the arrayBuffer() method will change significantly.
+// the pattern will be something like:
+//
+// const { createDeferredPromise } = require('internal/util');
+// const { concat, ...} = internalBinding('blob');
+//
+// function arrayBuffer() {
+//   const { promise, resolve } = createDeferredPromise();
+//   const reader = this.#buffer.getReader();
+//   const buffers = [];
+//   const readNext = () => {
+//     const result = reader.pull((status, buffer) => {
+//       if (status == -1) {
+//         // EOS, concat and resolve.
+//         // buffer should be undefined here.
+//         resolve(concat(buffers));
+//         return;
+//       }
+//       buffers.push(buffer);
+//       readNext();
+//     });
+//   };
+//   readNext();  // Starts the read loop
+//   return promise;
+// }
+//
+// For the stream() method, the pattern will be something like:
+//
+// function stream() {
+//   const reader = this.#buffer.getReader();
+//   return new ReadableStream({
+//     #reader = reader;
+//     pull(c) {
+//       const { promise, resolve } = createDeferredPromise();
+//       reader.pull((status, buffer) => {
+//         if (status === -1) {  // EOS
+//           c.close();
+//           resolve();
+//           return;
+//         }
+//         c.enqueue(new Uint8Array(buffer));
+//         resolve();
+//       });
+//       return promise;
+//     }
+//   });
+// }
+
 // Concatenate multiple ArrayBufferView/ArrayBuffers into a single ArrayBuffer.
 // This method treats all ArrayBufferView types the same.
 void Concat(const FunctionCallbackInfo<Value>& args) {