import { Webview } from "https://deno.land/x/webview@0.7.3/mod.ts";
Binds a callback so that it will appear in the webview with the given name as a global async JavaScript function. Callback receives a seq and req value. The seq parameter is an identifier for using Webview.return to return a value while the req parameter is a string of an JSON array representing the arguments passed from the JavaScript function call.