Automated Whatsapp Web messager. Can also detect when a person is typing and cut them off.

whatsappMessenger.js

function sendMsg(msg) {
	let txt = document.querySelectorAll('._13NKt')[1]
	txt.innerText = msg
	let startTypingEv = new InputEvent('input', {
	    bubbles: true
	  });
	txt.dispatchEvent(startTypingEv)
	let enterEv = new KeyboardEvent('keydown', {altKey:false,
	  bubbles: true,
	  cancelBubble: false, 
	  cancelable: true,
	  charCode: 0,
	  code: "Enter",
	  composed: true,
	  ctrlKey: false,
	  currentTarget: null,
	  defaultPrevented: true,
	  detail: 0,
	  eventPhase: 0,
	  isComposing: false,
	  isTrusted: true,
	  key: "Enter",
	  keyCode: 13,
	  location: 0,
	  metaKey: false,
	  repeat: false,
	  returnValue: false,
	  shiftKey: false,
	  type: "keydown",
	  which: 13});
	txt.dispatchEvent(enterEv)
}

function timeout(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
}

while (true) {
	if (typer = document.querySelectorAll('.2YPr')[0].innerText.match(/(.*)is typing/)) {
		sendMsg(`A wild ${typer[1]} is typing`);
		await timeout(7000)
	}
	await timeout(250)
}

Thanks