Listens for postMessage events on chat.deepseek.com and logs them
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// ==UserScript==
// @name DeepSeek Native Setter Injector
// @description Listens for postMessage events on chat.deepseek.com and logs them
// @match https://chat.deepseek.com/*
// @grant none
// @version 0.0.1.20250511171540
// @namespace https://greasyfork.org/users/1435046
// ==/UserScript==
(function() {
'use strict';
// Cache the native setter for HTMLTextAreaElement.value
const valueSetter = Object.getOwnPropertyDescriptor(
HTMLTextAreaElement.prototype, 'value'
).set;
window.addEventListener('message', event => {
// 1. Read the incoming message
const message = event.data;
// 2. Find DeepSeek’s chat textarea
const ta = document.getElementById('chat-input');
if (!ta) return;
// 3. Focus so the app knows it’s active
ta.focus();
// 4. Use the native setter to update both DOM and React state
valueSetter.call(ta, message);
// 5. Dispatch a proper InputEvent for React/Vue/etc.
ta.dispatchEvent(new InputEvent('input', { bubbles: true }));
});
})();