sandstone-proxy/src/frame/intercept/dom.mjs

An experimental web proxy utilizing sandboxed iframes and no service worker.

import * as rewrite from "../rewrite/index.mjs";
import { proxy_function } from "../context.mjs";

function handle_append(element) {
  rewrite.element(element);
}

proxy_function(globalThis?.HTMLElement?.prototype, "append", (target, this_arg, args) => {
  handle_append(args[0]);
  return Reflect.apply(target, this_arg, args);
})

proxy_function(globalThis?.HTMLElement?.prototype, "appendChild", (target, this_arg, args) => {
  handle_append(args[0]);
  return Reflect.apply(target, this_arg, args);
})

proxy_function(globalThis?.HTMLElement?.prototype, "insertBefore", (target, this_arg, args) => {
  handle_append(args[0]);
  return Reflect.apply(target, this_arg, args);
})

proxy_function(globalThis?.HTMLElement?.prototype, "replaceChild", (target, this_arg, args) => {
  handle_append(args[0]);
  return Reflect.apply(target, this_arg, args);
})

if (globalThis.Image) {
  globalThis.Image = new Proxy(globalThis.Image, {
    construct(target, args) {
      let ret = Reflect.construct(target, args);
      rewrite.element(ret);
      return ret;
    }
  });
}