Make explicit

Author: manzt

js/src/comm.ts

@@ -32,6 +32,7 @@ export class ShinyComm {
     const msg = {
       content: {comm_id: this.comm_id, data: data},
       metadata: metadata,
+      // TODO: need to _encode_ any buffers into base64 (JSON.stringify just drops them)
       buffers: buffers || [],
       // this doesn't seem relevant to the widget?
       header: {}

js/src/utils.ts

@@ -5,7 +5,7 @@ import { decode } from 'base64-arraybuffer';
 // along to the comm logic
 function jsonParse(x: string) {
   const msg = JSON.parse(x);
-  msg.buffers = msg.buffers.map((b: any) => new DataView(decode(b)));
+  msg.buffers = msg.buffers.map((base64: string) => new DataView(decode(base64)));
   return msg;
 }